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1. Metataxonomic characterization of an autochthonous and allochthonous microbial consortium involved in a two-stage anaerobic batch reactor applied to hydrogen and methane production from sugarcane bagasse

Author:
Camila A.B. Silva Rabelo; Franciele P. Camargo; Isabel Kimiko Sakamoto; Maria Bernadete A. Varesche
Source:
Enzyme and microbial technology 2023 v.162 pp. 110119
ISSN:
0141-0229
Subject:
Enterococcus; Methanoculleus; Methanosaeta; batch systems; energy metabolism; enzymes; genes; hydrogen; hydrolysis; inoculum; metabolites; methane; methane production; sugarcane bagasse
Abstract:
... Enzymatically pre-treated sugarcane bagasse (SCB) was used as substrate for sequential production of hydrogen (H₂) and methane (CH₄). In stage I, SCB was used by autochthonous bacteria, such as Enterococcus (42.4 % relative abundance) and Paraclostridium (16.8 %) for H₂ production (166.8 mL H₂/L), while the metabolites accumulated at the end of this stage (9140.5 mg HAc/L) were used by allochthono ...
DOI:
10.1016/j.enzmictec.2022.110119

2. The positive correlation of antioxidant activity and prebiotic effect about oat phenolic compounds

Author:
Yunzhen Zhang; Yueqin Li; Xiaxia Ren; Xin Zhang; Zufang Wu; Lianliang Liu
Source:
Food chemistry 2023 v.402 pp. 134231
ISSN:
0308-8146
Subject:
Avena nuda; Bacteroides; Bifidobacterium; Clostridium; Enterococcus; Lactobacillus; antioxidant activity; antioxidants; butanol; ethyl acetate; fermentation; fluorescence; food chemistry; hybridization; intestinal microorganisms; oats; phenolic compounds; prebiotics
Abstract:
... The correlation of antioxidant activity and prebiotic effect about oat phenolic compounds was invested, while there exists limited studies. Free and bound phenolic compounds were separated from ethyl acetate, n-butanol and aqueous fractions. Fluorescence in situ hybridization was used to investigate gut microbiota of in vitro fermentation samples. The results showed that ethyl acetate fraction pos ...
DOI:
10.1016/j.foodchem.2022.134231

3. Alteration of gut bacteria composition among individuals with asymptomatic Blastocystis infection: A case-control study

Author:
Sahar Behboud; Kavous Solhjoo; Saiedeh Erfanian; Majid Pirestani; Amir Abdoli
Source:
Microbial pathogenesis 2022 v.169 pp. 105639
ISSN:
0882-4010
Subject:
Bacteroides fragilis; Bifidobacterium; Blastocystis; Enterococcus; Escherichia coli; Lactobacillus; Ruminococcus productus; case-control studies; cross-sectional studies; digestive tract; ecosystems; gastrointestinal system; humans; intestinal microorganisms; parasites; pathogenesis; quantitative polymerase chain reaction
Abstract:
... The gut microbiota consists a diverse and complex ecosystem that is involved in beneficial functions as well as potentially harmful conditions for human. Blastocystis sp. is a common parasite of the digestive tract of animals and humans; however, limited data is available concerning the association of asymptomatic Blastocystis infection and gut bacteria composition. Hence, in this cross-sectional ...
DOI:
10.1016/j.micpath.2022.105639

4. Altitude-adaption of gut microbiota in Tibetan chicken

Author:
Xiaxia Du; Fugui Li; Fanli Kong; Zhifu Cui; Diyan Li; Yan Wang; Qing Zhu; Gang Shu; Yaofu Tian; Yao Zhang; Xiaoling Zhao
Source:
Poultry science 2022 v.101 no.9 pp. 101998
ISSN:
0032-5791
Subject:
Actinobacteria; Enterococcus; Lactococcus; Paenibacillus; Proteobacteria; Sporosarcina; altitude; atmospheric pressure; biodegradation; biosynthesis; body temperature; cecum; chickens; cold; energy intake; genes; ileum; intestinal microorganisms; microbiome; oxygen; signal transduction; xenobiotics
Abstract:
... Low oxygen levels and extremely cold weather in high-altitude environments requires more energy intake to maintain body temperature in animals. However, little is known about the characteristics of cecal and ileac microbiota in Tibetan chicken and how the high and low altitude environments affect the gut microbiota communities in Tibetan chicken. In the present study, In the present study, Tibetan ...
DOI:
10.1016/j.psj.2022.101998

5. Analysis of virulence genes, drug resistance detection, and pathogenicity in Enterococcus from farm animals

Author:
Xinyun Kang; Yanqin Wei; Xiaofei Fan; Shuangyan Luo; Xiaofeng Luo; Sijun Zhao; Guiqin Wang
Source:
Microbial pathogenesis 2022 v.171 pp. 105745
ISSN:
0882-4010
Subject:
Enterococcus; cattle; cefotaxime; ciprofloxacin; drug resistance; farms; genes; heart; lethal dose 50; levofloxacin; liver; paper; pathogenesis; sulfamethoxazole; vancomycin; virulence
Abstract:
... This study aimed to investigate the presence of eight virulence genes (ace, asa1, esp, efaA, gelE, cylA, agg, fsr) in Enterococcus from a variety of animals and to explore the drug resistance and pathogenicity. This could provide a theoretical basis for clinical treatment of Enterococcus infections. Anal swabs from pigs, chickens, cattle, and dogs in farms and pet hospitals were collected for Ente ...
DOI:
10.1016/j.micpath.2022.105745

6. Antibacterial activity potential of leaf extracts of Blepharis maderaspatensis and Ziziphus oenoplia against antibiotics resistant Pseudomonas strains isolated from pus specimens

Author:
Chokkalingam Mohanasundari; Sorimuthu Anbalagan; Kesavan Srinivasan; Mathiyazhagan Narayanan; Mythili Saravanan; Sulaiman Ali Alharbi; Saleh H. Salmen; Tran Cam Nhung; Arivalagan Pugazhendhi
Source:
Process biochemistry 2022 v.118 pp. 24-31
ISSN:
1359-5113
Subject:
Blepharis; Enterococcus; Klebsiella; Micrococcus; Staphylococcus; Ziziphus; antibacterial properties; antibiotic resistance; drug therapy; leaves; methanol; solvents
Abstract:
... Knowing the antibiotic resistance profile of pathogenic bacteria is essential to finding an appropriate remedy for these issues by sourcing antibacterial agents from plants. The present study exposes the bactericidal potential of different leaf extracts of Blepharis maderaspatensis and Ziziphus oenoplia against multi drug resistant bacterial strains enumerated from pus specimens at a secondary car ...
DOI:
10.1016/j.procbio.2022.04.008

7. Antimicrobial resistance dissemination associated with intensive animal production practices in Argentina: A systematic review and meta-analysis

Author:
Barbara Prack McCormick; María P. Quiroga; Verónica E. Álvarez; Daniela Centrón; Pablo Tittonell
Source:
Revista argentina microbiología 2022 pp. -
ISSN:
0325-7541
Subject:
Campylobacter; Enterococcus; Escherichia coli; Salmonella; ampicillin; antibiotic resistance; beef cattle; cefotaxime; chickens; feedlots; meta-analysis; monitoring; multiple drug resistance; nalidixic acid; politics; streptomycin; swine; systematic review; tetracycline; Argentina
Abstract:
... Abuse and misuse of antimicrobial agents has accelerated the spread of antimicrobial-resistant bacteria. The association between antimicrobial-resistant infections in humans and antimicrobial use in agriculture is complex, but well-documented. This study provides a systematic review and meta-analysis of the dissemination of antimicrobial resistance (AMR) to antimicrobials defined as critically imp ...
DOI:
10.1016/j.ram.2022.07.001

8. Antimicrobial susceptibility testing determined by Alfred 60/AST (Alifax®) in a multi-sites lab: performance's evaluation and optimization of workflow

Author:
R. Cupaiolo; S. Cherkaoui; G. Serrano; N. Dauby; A. Georgala; S. Blumental; E. Maillart; M. Hites; M. Hallin; D. Martiny
Source:
Journal of microbiological methods 2022 v.194 pp. 106433
ISSN:
0167-7012
Subject:
Enterococcus; antibiotic resistance; automation; bacteremia; blood; blood flow; blood volume; clindamycin; disk diffusion antimicrobial test; meropenem
Abstract:
... New techniques are needed to speed-up the identification and antimicrobial susceptibility testing (AST) of bacteria associated with bloodstream infections. Alfred 60/AST (Alifax®, Polverara, Italy) performs AST by light scattering directly from positive blood cultures. We evaluated Alfred 60/AST performances for 4 months. Each new episode of bacteraemia was included and AST were compared to either ...
DOI:
10.1016/j.mimet.2022.106433

9. Are blue flags a good indicator of the quality of sea water on beaches? An empirical analysis of the Western Mediterranean basin

Author:
Fernando Merino; María A. Prats
Source:
Journal of cleaner production 2022 v.330 pp. 129865
ISSN:
0959-6526
Subject:
Enterococcus; Escherichia coli; European Union; empirical research; environmental education; intestines; public health; seawater; tourism; tourists; water quality; France; Italy; Mediterranean region; Spain
Abstract:
... Beach tourism in an important industry in many countries, and in the Mediterranean it supposes an extra pressure on the seawater quality. Concern about this aspect led the European Union to issue a first directive on the quality of bathing water in 1976 and modify it in 2006. This regulation establishes a mandatory control, in all European Union (EU) countries, of the proliferation of bacteria (sp ...
DOI:
10.1016/j.jclepro.2021.129865

10. Assessing cross‐laboratory performance for quantifying coliphage using EPA Method 1642

Author:
Amity G. Zimmer‐Faust; John F. Griffith; Joshua A. Steele; Laralyn Asato; Tania Chiem; Samuel Choi; Arturo Diaz; Joe Guzman; Michele Padilla; Jennipher Quach‐Cu; Victor Ruiz; Bryan Santos; Mary Woo; Stephen B. Weisberg
Source:
Journal of applied microbiology 2022 v.133 no.2 pp. 340-348
ISSN:
1364-5072
Subject:
Enterococcus; United States Environmental Protection Agency; coliphages; health promotion; risk; water quality
Abstract:
... AIMS: Widespread adoption of the new U.S. Environmental Protection Agency (USEPA) Method 1642 for enumeration of coliphage in recreational water requires demonstration that laboratories consistently meet internal method performance goals and yield results that are consistent across laboratories. METHODS AND RESULTS: Here we assess the performance of six laboratories processing a series of blind wa ...
DOI:
10.1111/jam.15523

11. Assessment of the Microbiological Quality and Biochemical Parameters of Traditional Hard Xinotyri Cheese Made from Raw or Pasteurized Goat Milk

Author:
Eleni C. Pappa; Thomas G. Bontinis; John Samelis; Kyriaki Sotirakoglou
Source:
Fermentation 2022 v.8 no.1 pp. -
ISSN:
2311-5637
Subject:
Enterococcus; Listeria; Salmonella; fermentation; goat milk; hydrophilicity; hydrophobicity; lactic acid; microbiological quality; milk; nitrogen; pH; pasteurization; pasteurized milk; peptides; proteolysis; raw milk; water solubility
Abstract:
... Traditional hard Xinotyri cheese was manufactured using raw or pasteurized goat milk, without starter cultures, and the changes in microbiological and biochemical characteristics were studied during ripening and storage. Mesophilic lactic acid bacteria (LAB) predominated (>8.5 log CFU/g) in freshly fermented Xinotyri cheeses (pH 4.5–4.6), regardless of milk pasteurization. Enterobacteria, pseudomo ...
DOI:
10.3390/fermentation8010020

12. Association of Gut Microbiota with Inflammatory Bowel Disease and COVID-19 Severity: A Possible Outcome of the Altered Immune Response

Author:
Anju Kaushal; Rashed Noor
Source:
Current microbiology 2022 v.79 no.6 pp. 184
ISSN:
0343-8651
Subject:
Bacteroidaceae; COVID-19 infection; Enterococcus; Lachnospiraceae; RNA; Ruminococcaceae; Serratia; Severe acute respiratory syndrome coronavirus 2; Staphylococcus; Streptococcus; brain; chemokines; digestive system; disease progression; dysbiosis; homeostasis; immune response; inflammatory bowel disease; intestinal microorganisms; kidneys; metabolites; microbiome; prognosis; secretion; therapeutics; viruses
Abstract:
... Inflammatory bowel disease could be induced by SARS-CoV-2, involved in alteration of gut microbiota during the respiratory viral infection. Presence of viral RNA in fecal samples for longer period, even after the clearance of the virus from respiratory tract, is suggestive of dysbiosis leading to the poor prognosis of COVID-19 in hospitalized patients. Gut microbiome (GM) plays a significant role ...
DOI:
10.1007/s00284-022-02877-7

13. Bacteria from bovine clinical mastitis showed multiple drug resistance

Author:
Sudhakar P. Awandkar; Mahesh B. Kulkarni; Narendra V. Khode
Source:
Veterinary research communications 2022 v.46 no.1 pp. 147-158
ISSN:
0165-7380
Subject:
Acinetobacter; Enterococcus; Holstein; Jersey; Pseudomonas; Streptococcus uberis; aminoglycosides; beta-lactamase; cephalosporins; chloramphenicol; cross-sectional studies; dairy industry; lactation; milk; monsoon season; multiple drug resistance; public health; quinolones; udders; vancomycin; veterinary medicine
Abstract:
... Mastitis, which often manifests as udder infection in dairy animals, is of great concern as it affects public health and results in heavy economic losses to the dairy industry. A hospital-based cross-sectional study was conducted to determine the cultivable bacterial species associated with bovine clinical mastitis and their resistance patterns towards different antimicrobials. The milk samples fr ...
DOI:
10.1007/s11259-021-09838-8

14. Bacterial assemblages associated with Acropora palmata affected by white band disease in the Mexican region of the Caribbean and Gulf of Mexico

Author:
Joicye Hernández-Zulueta; Leopoldo Díaz-Pérez; José Q. García-Maldonado; Gabriela Georgina Nava-Martínez; Miguel Ángel García-Salgado; Fabián Alejandro Rodríguez-Zaragoza
Source:
Journal of sea research 2022 v.185 pp. 102230
ISSN:
1385-1101
Subject:
Acropora palmata; Clostridium; Desulfovibrio; Enterobacter; Enterococcus; Pleurocapsa; Pseudoalteromonas; Pseudomonas; Spirochaeta; Stenotrophomonas; Synechococcus; Tepidibacter; Vibrio; corals; genes; research; seawater; sediments; Caribbean; Caribbean Sea; Gulf of Mexico
Abstract:
... The bacterial assemblages associated with Acropora palmata from the Mexican Caribbean Sea and the Gulf of Mexico were analyzed by high throughput sequencing of the 16S rRNA gene. Samples were taken from four substrates: apparently healthy corals, corals with white band disease, and the seawater and sediment surrounding these corals. The bacterial assemblages showed no significant differences among ...
DOI:
10.1016/j.seares.2022.102230

15. Bacterial colonisation dynamics of household plastics in a coastal environment

Author:
Luke Lear; Daniel Padfield; Tirion Dowsett; Maia Jones; Suzanne Kay; Alex Hayward; Michiel Vos
Source:
Science of the total environment 2022 v.838 pp. 156199
ISSN:
0048-9697
Subject:
Enterococcus; Galleria mellonella; Serratia; antibiotic resistance; bacterial colonization; biofilm; community structure; estuaries; humans; insects; marine environment; models; mortality; polyethylene terephthalates; polypropylenes; virulence; wildlife
Abstract:
... Accumulation of plastics in the marine environment has widespread detrimental consequences for ecosystems and wildlife. Marine plastics are rapidly colonised by a wide diversity of bacteria, including human pathogens, posing potential risks to health. Here, we investigate the effect of polymer type, residence time and estuarine location on bacterial colonisation of common household plastics, inclu ...
DOI:
10.1016/j.scitotenv.2022.156199

16. Bacterial community dynamics on bats and the implications for pathogen resistance

Author:
Aoqiang Li; Zhongle Li; Wentao Dai; Katy L. Parise; Haixia Leng; Longru Jin; Sen Liu; Keping Sun; Joseph R. Hoyt; Jiang Feng
Source:
Environmental microbiology 2022 v.24 no.3 pp. 1484-1498
ISSN:
1462-2912
Subject:
Burkholderia; Corynebacterium; Enterococcus; Flavobacterium; Pseudogymnoascus destructans; Pseudomonas; Rhinolophus ferrumequinum; bacterial communities; body condition; community structure; fungi; pathogens; temperature; white-nose syndrome
Abstract:
... The bats skin microbiota plays an important role in reducing pathogen infection, including the deadly fungal pathogen Pseudogymnoascus destructans, the causative agent of white‐nose syndrome. However, the dynamic of skin bacterial communities response to environmental perturbations remains poorly described. We characterized skin bacterial community over time and space in Rhinolophus ferrumequinum, ...
DOI:
10.1111/1462-2920.15754

17. Bacteriocins Produced by LAB Isolated from Cheeses within the Period 2009–2021: a Review

Author:
Lorena Trejo-González; Ana-Estefanía Gutiérrez-Carrillo; Adriana-Inés Rodríguez-Hernández; Ma. del Rocío López-Cuellar; Norberto Chavarría-Hernández
Source:
Probiotics and antimicrobial proteins 2022 v.14 no.2 pp. 238-251
ISSN:
1867-1306
Subject:
Enterococcus; Lactobacillus; Lactococcus; Pediococcus; bacteriocins; food biopreservation; lactic acid; peptides; probiotics; surveys
Abstract:
... A survey is presented concerning original research articles published in well-reputed scientific journals on the isolation of lactic acid bacteria (LAB) from cheeses worldwide, where researchers evaluated the bacteriocin production by such isolates in searching for novel functional peptides that can exhibit potential for biotechnological applications. Seventy-one articles were published in the per ...
DOI:
10.1007/s12602-021-09825-0

18. Beach pollution from marine litter: Analysis with the DPSIR framework (driver, pressure, state, impact, response) in Tuscany, Italy

Author:
Ileana Federigi; Elena Balestri; Alberto Castelli; Davide De Battisti; Ferruccio Maltagliati; Virginia Menicagli; Marco Verani; Claudio Lardicci; Annalaura Carducci
Source:
Ecological indicators 2022 v.143 pp. 109395
ISSN:
1470-160X
Subject:
Enterococcus; One Health initiative; biomass; case studies; coastal zone management; data collection; databases; drainage; gastroenteritis; ingestion; marine debris; microbiological quality; models; pollution; risk; sand; sewage; shorelines; stakeholders; water currents; watersheds; Italy
Abstract:
... Beaches are affected by the accumulation of natural and anthropogenic material; however, this environmental issue has not yet been explored from a One Health perspective. In this paper, the conceptual framework of DPSIR (Drivers-Pressures-State-Impact-Response) was used to understand the beach-stranded material issue in a systemic way and a data-based classification for some environmental indicato ...
DOI:
10.1016/j.ecolind.2022.109395

19. Biochemical composition, antimicrobial and antifungal activities assessment of the fermented medicinal plants extract using lactic acid bacteria

Author:
Hamza Gadhoumi; E. L. Akrem Hayouni; Enriqueta Martinez-Rojas; Walid Yeddes; Moufida Saidani Tounsi
Source:
Archives of microbiology 2022 v.204 no.7 pp. 374
ISSN:
0302-8933
Subject:
Enterococcus; Escherichia coli; Lactobacillus acidophilus; Phytophthora infestans; Pseudomonas aeruginosa; Staphylococcus aureus; bioactive compounds; camphene; cineole; flavonoids; food preservation; headspace analysis; ingredients; lactic acid; lactic fermentation; plant extracts; polyphenols; shelf life
Abstract:
... To prevent foodborne diseases and extend shelf life, antimicrobial agents may be used in food to inhibit the growth of undesired microorganisms. The present study was aimed to determine the antimicrobial and antifungal activities of the fermented medicinal plants extract using Lactobacillus acidophilus ATCC 4356. The fermentation kinetic parameters, biochemical composition and the volatile compoun ...
DOI:
10.1007/s00203-022-02985-9

20. Bioremediation of a Sewage-Contaminated Tropical Swamp Through Bioaugmentation with a Microalgae-Predominant Microbial Consortium

Author:
Jaime E. Gutiérrez; Nohora Gutiérrez-Hoyos; Juan Sebastián Gutiérrez; Martha J. Vives; V. Sivasubramanian
Source:
Indian journal of microbiology 2022 v.62 no.2 pp. 307-311
ISSN:
0046-8991
Subject:
Enterococcus; bioaugmentation; bioreactors; decontamination; microalgae; phytoplankton; sewage; swamps; water reservoirs; Colombia
Abstract:
... Bioaugmentation has many applications as a bioremediation technique. It is usually performed by bacteria but microalgal consortia also have great potential for bioremediation. This study evaluated the ability of a microbial consortium with predominance of microalgae (MCPM) to decontaminate the water of the Mallorquín tropical swamp. The Mallorquín Swamp is a natural water reservoir, essential for ...
DOI:
10.1007/s12088-021-00990-y

21. Black raspberry extract shifted gut microbe diversity and their metabolic landscape in a human colonic model

Author:
Shiqi Zhang; Mengyang Xu; Xiaowei Sun; Xuyu Liu; Fouad Choueiry; Rui Xu; Haifei Shi; Jiangjiang Zhu
Source:
Journal of chromatography 2022 v.1188 pp. 123027
ISSN:
1570-0232
Subject:
Enterococcus; Rubus occidentalis; anthocyanins; arginine; biosynthesis; colon; dysbiosis; human health; humans; intestinal microorganisms; irritable bowel syndrome; liquid chromatography; lysine; mass spectrometry; metabolites; metabolomics; models; obesity; pH; proline; ribosomal DNA; temperature
Abstract:
... Human gut microbiota is critical for human health, as their dysbiosis could lead to various diseases such as irritable bowel syndrome and obesity. Black raspberry (BRB) has been increasingly studied recently for its impact on gut microbiota as a rich source of phytochemicals (e.g., anthocyanin). To investigate the effect of BRB extract on the gut microbiota composition and their metabolism, an in- ...
DOI:
10.1016/j.jchromb.2021.123027

22. Bombyx mori from a food safety perspective: A systematic review

Author:
Filippo Marzoli; Pietro Antonelli; Alessio Saviane; Luca Tassoni; Silvia Cappellozza; Simone Belluco
Source:
Food research international 2022 v.160 pp. 111679
ISSN:
0963-9969
Subject:
Bacillus cereus; Bombyx mori; Enterococcus; Listeria monocytogenes; Pseudomonas fluorescens; Salmonella; allergenicity; bioaccumulation; edible insects; food research; food safety; heat; heavy metals; ingestion; insect-based foods; metagenomics; risk assessment; silk; silkworms; systematic review; toxicity; toxicology
Abstract:
... Bombyx mori (BM) is an economically important insect for silk production, and it is also farmed and used as food in different countries around the world. The present systematic review aims to assess the suitability of BM as an edible insect, retrieving data from scientific papers reporting microbiological, chemical, and allergenic hazards of silkworm consumed as either whole insects or insect deri ...
DOI:
10.1016/j.foodres.2022.111679

23. Changes of bacterial communities and volatile compounds developed from the spoilage of white Hypsizygus marmoreus under different storage conditions

Author:
Yu-Han Yuan; Ling-Xiao Liu; Li Guo; Liang Wang; Ji-Wei Hao; Yun-Guo Liu
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.168 pp. 113906
ISSN:
0023-6438
Subject:
Enterococcus; Hypsizygus marmoreus; Pediococcus; Pseudomonas; Serratia; Stenotrophomonas; spoilage; storage time
Abstract:
... The succession of bacterial communities and changes of volatile components throughout the storage of white Hypsizygus marmoreus (white H.marmoreus) were investigated. The results showed that the microbial communities were mainly composed of Proteobacteria and Firmicutes at 4 °C and 25 °C, with Serratia, Pediococcus, Enterococcus, Pseudomonas and Stenotrophomonas as the dominant genera. Serratia co ...
DOI:
10.1016/j.lwt.2022.113906

24. Charactering the spoilage mechanism of “three sticks” of Jinhua ham

Author:
Changyu Zhou; Guang Zhan; Daodong Pan; Guanghong Zhou; Ying Wang; Jun He; Jinxuan Cao
Source:
Food science and human wellness 2022 v.11 no.5 pp. 1322-1330
ISSN:
2213-4530
Subject:
Enterobacteriaceae; Enterococcus; ammonia; cadaverine; dimethyl disulfide; food science; ham; histamine; humans; methanethiol; off odors; putrescine; salt content; spoilage; total volatile basic nitrogen
Abstract:
... To investigate the spoilage characteristics of Jinhua ham, sensory scores, volatile compounds, biogenic amine, physicochemical parameters and microbial counts were evaluated between normal and spoiled hams. The results showed that off-odors of spoiled hams were dominated by rancid, sour, sulfide and ammonia odors derived from these compounds including butanoic acid, methanethiol and dimethyl disul ...
DOI:
10.1016/j.fshw.2022.04.021

25. Characterization and identification of a novel microbial consortium M2 and its effect on fermentation quality and enzymatic hydrolysis of sterile rice straw

Author:
Junfeng Li; Hao Ding; Jie Zhao; Siran Wang; Zhihao Dong; Tao Shao
Source:
Journal of applied microbiology 2022 v.132 no.3 pp. 1687-1699
ISSN:
1364-5072
Subject:
Enterococcus; biomass; biorefining; carbon; enzymatic hydrolysis; fermentation; glucose; lactic acid; lignocellulases; lignocellulose; pH; rice straw; silage; water solubility; xylanases; xylose; yaks
Abstract:
... AIMS: To isolate and enrich lignocellulolytic microbial consortia from yak (Bos grunniens) rumen and evaluate their effects on the fermentation characteristics and enzymatic hydrolysis in rice straw silage. METHODS AND RESULTS: A novel microbial consortium M2 with high CMCase and xylanase activities was enriched and observed to be prone to use natural carbon sources. Its predominant genus was Ente ...
DOI:
10.1111/jam.15328

26. Characterization of bacterial community and fermentation parameters during ensiling of Napier grasses harvested at various times within a day

Author:
Zhihao Dong; Junfeng Li; Siran Wang; Jie Zhao; Dong Dong; Tao Shao
Source:
Animal feed science and technology 2022 v.291 pp. 115380
ISSN:
0377-8401
Subject:
Cenchrus purpureus; Enterobacter; Enterococcus; Klebsiella; Lactobacillus; Lactococcus; Leuconostoc; Pediococcus; bacterial communities; crude protein; epiphytes; fermentation; harvest date; lactic acid; pH; polyethylene; propionic acid; silage; solar radiation; vegetative growth
Abstract:
... Grasses exhibit variations in chemical composition and epiphytic microbiota during daylight. These variations may influence the natural fermentation parameters of silage. This study was to evaluate the bacterial community and fermentation parameters during ensiling of Napier grasses harvested at various times within a day. Secondary growth of Napier grass (vegetative stage) was harvested at 7:00 ( ...
DOI:
10.1016/j.anifeedsci.2022.115380

27. Characterization of roof runoff microbial quality in four U.S. cities with varying climate and land use characteristics

Author:
Jumana Alja'fari; Sybil Sharvelle; Nichole E. Brinkman; Michael Jahne; Scott Keely; Emily A. Wheaton; Jay Garland; Claire Welty; Michael C. Sukop; Thomas Meixner
Source:
Water research 2022 v.225 pp. 119123
ISSN:
0043-1354
Subject:
Campylobacter; Cryptosporidium parvum; Enterococcus; Escherichia coli; Giardia lamblia; Salmonella; chemical oxygen demand; citizen science; climate; data collection; droplets; genes; land use; microbiological quality; polymerase chain reaction; rain; research; runoff; storms; turbidity; water supply
Abstract:
... Roof runoff has the potential to serve as an important local water source in regions with growing populations and limited water supply. Given the scarcity of guidance regulating the use of roof runoff, a need exists to characterize the microbial quality of roof runoff. The objective of this 2-year research effort was to examine roof runoff microbial quality in four U.S. cities: Fort Collins, CO; T ...
DOI:
10.1016/j.watres.2022.119123

28. Cheese ripening in nonconventional conditions: A multiparameter study applied to Protected Geographical Indication Canestrato di Moliterno cheese

Author:
Michele Faccia; Giuseppe Natrella; Giuseppe Gambacorta; Antonio Trani
Source:
Journal of dairy science 2022 v.105 no.1 pp. 140-153
ISSN:
0022-0302
Subject:
Enterococcus; Lactobacillus; Lactococcus; casein; cheeses; free fatty acids; liquid chromatography; mass spectrometry; molecular weight; peptides; principal component analysis; protected designation of origin; proteolysis; relative humidity; temperature; volatile organic compounds
Abstract:
... A multiparameter study was performed to evaluate the effect of fondaco, a traditional ripening cellar without any artificial temperature and relative humidity control, on the chemical, microbiological, and sensory characteristics of Protected Geographical Indication Canestrato di Moliterno cheese. Ripening in such a nonconventional environment was associated with lower counts of lactococci, lactob ...
DOI:
10.3168/jds.2021-20845

29. Chicken Gut Microbiota Responses to Dietary Bacillus subtilis Probiotic in the Presence and Absence of Eimeria Infection

Author:
Fareed Uddin Memon; Yunqiao Yang; Geyin Zhang; Imdad Hussain Leghari; Feifei Lv; Yuhan Wang; Farooque Laghari; Farooque Ahmed Khushk; Hongbin Si
Source:
Microorganisms 2022 v.10 no.8 pp. -
ISSN:
2076-2607
Subject:
Bacillus subtilis; Clostridium; Corynebacterium; Eimeria tenella; Enterococcus; Proteobacteria; Weissella; adaptive immunity; butyrates; chickens; coccidiosis; discriminant analysis; growth performance; homeostasis; intestinal microorganisms; intestines; poultry diseases; probiotics; species diversity
Abstract:
... Coccidiosis is a well-known poultry disease that causes the severe destruction of the intestinal tract, resulting in reduced growth performance and immunity, disrupted gut homeostasis and perturbed gut microbiota. Supplementation of probiotics were explored to play a key role in improving growth performance, enhancing innate and adaptive immunity, maintaining gut homeostasis and modulating gut mic ...
DOI:
10.3390/microorganisms10081548

30. Clinical isolates of E. faecalis and E. faecium harboring virulence genes show the concomitant presence of CRISPR loci and antibiotic resistance determinants

Author:
Isabela Sguilla Rotta; Wellington Francisco Rodrigues; Celso Tadeu Barbosa Dos Santos; Hilario Cuquetto Mantovani; Adriana Gonçalves De Oliveira; Alessandra Barbosa Ferreira Machado; Aline Dias Paiva
Source:
Microbial pathogenesis 2022 v.171 pp. 105715
ISSN:
0882-4010
Subject:
CRISPR-Cas systems; aminoglycosides; antibiotic resistance; deoxyribonucleases; genes; multiple drug resistance; pathogenesis; phenotype; virulence
Abstract:
... In this study, we evaluated the antimicrobial susceptibility, the presence of gene-encoding virulence factors and CRISPR systems, as well as the ability to produce lytic enzymes among clinical E. faecalis and E. faecium isolates (n = 44). All enterococci isolates showed phenotypes of multidrug resistance. E. faecalis and E. faecium isolates exhibited high-level aminoglycoside resistance phenotype, ...
DOI:
10.1016/j.micpath.2022.105715

31. Coastal water quality prediction based on machine learning with feature interpretation and spatio-temporal analysis

Author:
Luka Grbčić; Siniša Družeta; Goran Mauša; Tomislav Lipić; Darija Vukić Lušić; Marta Alvir; Ivana Lučin; Ante Sikirica; Davor Davidović; Vanja Travaš; Daniela Kalafatovic; Kristina Pikelj; Hana Fajković; Toni Holjević; Lado Kranjčević
Source:
Environmental modelling & software 2022 v.155 pp. 105458
ISSN:
1364-8152
Subject:
Enterococcus; algorithms; coastal water; computer software; prediction; public health; salinity; water quality; Croatia
Abstract:
... Coastal water quality management is a public health concern, as water of poor quality can potentially harbor dangerous pathogens. In this study, we employ routine monitoring data of EscherichiaColi and enterococci across 15 beaches in the city of Rijeka, Croatia, to build machine learning models for predicting E.Coli and enterococci based on environmental features. Cross-validation analysis showed ...
DOI:
10.1016/j.envsoft.2022.105458

32. Colorimetric detection of viable antibiotic resistant Enterococcus mediated by cordless operation of reverse transcription loop-mediated isothermal amplification

Author:
Thi Ngoc Diep Trinh; Nae Yoon Lee
Source:
Journal of biotechnology 2022 v.357 pp. 92-99
ISSN:
0168-1656
Subject:
Enterococcus; agarose; antibiotic resistance; biotechnology; colorimetry; electricity; gene amplification; heat; nucleic acids; phenolphthaleins; reverse transcription loop-mediated isothermal amplification
Abstract:
... In this study, we applied a tube-based reverse transcription loop-mediated isothermal amplification technique using preloaded amplification and detection reagents for simple screening of viable vancomycin-resistant Enterococcus in a cordless manner. We adopted an mRNA-based approach to detect live Enterococcus in vancomycin-treated cultures. We used agarose to preload and store all reagents for am ...
DOI:
10.1016/j.jbiotec.2022.08.002

33. Combined Action of Antibiotics and Bacteriocins against Vancomycin-Resistant Enterococci

Author:
Jorge Enrique Vazquez Bucheli; Joanna Ivy Irorita Fugaban; Wilhelm Heinrich Holzapfel; Svetoslav Dimitrov Todorov
Source:
Microorganisms 2022 v.10 no.7 pp. -
ISSN:
2076-2607
Subject:
Enterococcus; Pediococcus; antibiotic resistance; antimicrobial peptides; bacteriocins; flow cytometry; food industry; lactic acid; propidium; vancomycin; viability assays
Abstract:
... Antibiotics have been one of the most important discoveries in the area of applied medical microbiology; however, as a result of various factors, we are currently facing a dramatic and relatively dangerous increase in the number of cases of antibiotic resistance, and the need for new types of antimicrobials continues to grow. New approaches are needed to combat antibiotic-resistant pathogens. Bact ...
DOI:
10.3390/microorganisms10071423

34. Comparative Analyses of the Gut Microbiota in Growing Ragdoll Cats and Felinae Cats

Author:
Zongjie Li; Di Di; Qing Sun; Xiaohui Yao; Jianchao Wei; Beibei Li; Ke Liu; Donghua Shao; Yafeng Qiu; Haixia Liu; Zhanjun Cheng; Zhiyong Ma
Source:
Animals 2022 v.12 no.18 pp. -
ISSN:
2076-2615
Subject:
Anaerococcus; Bacteroides; Collinsella; Enterococcus; Finegoldia; Fusobacterium; Lactobacillus; Porphyromonas; Prevotella; Proteobacteria; Roseburia; Streptococcus; cats; domestication; energy metabolism; humans; intestinal microorganisms; probiotics
Abstract:
... Today, domestic cats are important human companion animals for their appearance and favorable personalities. During the history of their domestication, the morphological and genetic portraits of domestic cats changed significantly from their wild ancestors, and the gut microbial communities of different breeds of cats also apparently differ. In the current study, the gut microbiota of Ragdoll cats ...
DOI:
10.3390/ani12182467

35. Comparative genomics reveals the organic acid biosynthesis metabolic pathways among five lactic acid bacterial species isolated from fermented vegetables

Author:
Charles Obinwanne Okoye; Ke Dong; Yongli Wang; Lu Gao; Xia Li; Yanfang Wu; Jianxiong Jiang
Source:
New biotechnology 2022 v.70 pp. 73-83
ISSN:
1871-6784
Subject:
Enterococcus; Lactobacillus buchneri; Lactobacillus plantarum; Pediococcus pentosaceus; Weissella hellenica; antimicrobial properties; bioinformatics; biosynthesis; biotechnology; cyclic AMP; fermentation; genomics; glucose; hydroxymethylglutaryl-CoA synthase; lactic acid; lactic acid bacteria; operon; plasmids; polyketide synthases; secondary metabolites; transcription factors; transposons
Abstract:
... Lactic acid bacteria (LAB) comprise a widespread bacterial group, inhabiting the niches of fermented vegetables and capable of producing beneficial organic acids. In the present study, several bioinformatics approaches were used to perform whole-genome sequencing and comparative genomics of five LAB species, Lactobacillus plantarum PC1–1, Pediococcus pentosaceus PC2–1(F2), Weissella hellenica PC1A ...
DOI:
10.1016/j.nbt.2022.05.001

36. Comprehensive analysis for the bioturbation effect of space mutation and biofortification on strong-flavor Daqu by high-throughput sequencing, volatile analysis and metabolomics

Author:
Yu Mu; Jun Huang; Rongqing Zhou; Suyi Zhang; Hui Qin; Yi Dong; Chao Wang; Xiaojun Wang; Qianglin Pan; Huifang Tang
Source:
Food chemistry 2023 v.403 pp. 134440
ISSN:
0308-8146
Subject:
Aspergillus; Enterococcus; Lactobacillus; Pichia; Scopulibacillus; Thermoactinomyces; Thermomyces; biochemical pathways; biofortification; bioturbation; fermentation industry; flavor; food chemistry; metabolites; metabolomics; microbial communities; mutation; peptides; pyrazines
Abstract:
... Daqu, an indispensable starter, significantly affects the quality and yield of Chinese baijiu. To explore the bioturbation effect of space mutation and biofortification on strong-flavor Daqu, the microbial community, physicochemical properties and overall metabolic profile were investigated. Lactobacillus and Aspergillus were significantly reduced after bioturbation, while seven genera (e.g., Baci ...
DOI:
10.1016/j.foodchem.2022.134440

37. Consumer’s acceptability and health consciousness of probiotic and prebiotic of non-dairy products

Author:
Fernanda Cosme; António Inês; Alice Vilela
Source:
Food research international 2022 v.151 pp. 110842
ISSN:
0963-9969
Subject:
Bifidobacterium; Enterococcus; Lactobacillus; Lactococcus; Saccharomyces cerevisiae; Streptococcus; fermentation; food research; health behavior; herbal tea; humans; intestinal microorganisms; intestines; kombucha; lactose intolerance; prebiotics; probiotics; social welfare; yeasts
Abstract:
... Human gut microbiota is a protective agent of intestinal and systemic health, and its modulation is of great interest for human wellbeing. In the world of biotics, besides probiotics, prebiotics, and synbiotics, also appears the denomination of “postbiotics” and “psychobiotics”. Fermented dairy products are, traditionally, the major source of probiotics. Nevertheless, due to the increasing number ...
DOI:
10.1016/j.foodres.2021.110842

38. Delay of Feed Post-Hatch Causes Changes in Expression of Immune-Related Genes and Their Correlation with Components of Gut Microbiota, but Does Not Affect Protein Expression

Author:
Miska Katarzyna B.; Kahl Stanislaw; Schreier Lori L.; Russell Beverly; Kpodo Kouassi R.; Wegla Monika K.
Source:
Animals 2022 v.12 no.10 pp. -
ISSN:
2076-2615
Subject:
Clostridium perfringens; Enterococcus; chickens; ileum; immune response; immune system; intestinal microorganisms; poultry industry
Abstract:
... Newly hatched chicks do not have access to feed until 48-72 h post-hatch based on standard practices in the poultry industry. How these practices affect the chicken's immune system is not well understood. In this study, we investigated the effect of a 48-h delay in access to feed on the expression of specific immune-related genes in the gut (ileum) of newly hatched chicks. We also analyzed the cor ...
Handle:
10113/7788754
DOI:
10.3390/ani12101316

39. Detection of Escherichia coli and Enterococcus spp. in dogs with polymicrobial urinary tract infections: A 5‐year retrospective study

Author:
Grayson K. Walker; Valeriia Yustyniuk; John Shamoun; Megan E. Jacob; Maria Correa; Shelly L. Vaden; Luke B. Borst
Source:
Journal of veterinary internal medicine 2022 v.36 no.4 pp. 1322-1329
ISSN:
0891-6640
Subject:
Enterococcus; Escherichia coli; antibiotic resistance; cohort studies; confidence interval; doxycycline; drug therapy; gentamicin; hospitals; morbidity; retrospective studies; urinary tract; veterinary medicine
Abstract:
... BACKGROUND: Urinary tract infections (UTI) caused by Escherichia coli and Enterococcus spp., which are frequently coisolated in polymicrobial UTI, cause morbidity among dogs and warrant antimicrobial therapy. OBJECTIVES: To evaluate clinical features of dogs with polymicrobial E. coli and Enterococcal UTI. ANIMALS: Forty‐four client‐owned dogs with polymicrobial bacteriuria and groups of 100 clien ...
DOI:
10.1111/jvim.16445

40. Development of a rapid qPCR method to quantify lactic acid bacteria in cold-smoked salmon

Author:
Marc Jérôme; Delphine Passerini; Frédérique Chevalier; Laetitia Marchand; Françoise Leroi; Sabrina Macé
Source:
International journal of food microbiology 2022 v.363 pp. 109504
ISSN:
0168-1605
Subject:
Aerococcus; Carnobacterium; Enterococcus; Lactobacillus; Lactococcus; Leuconostoc; Macrococcus; Streptococcus; Vagococcus; Weissella; biodiversity; food microbiology; genes; lactic acid; quantitative polymerase chain reaction; seafoods; smoked salmon
Abstract:
... Quantification of lactic acid bacteria (LAB) is essential to control quality of seafood products like cold-smoked salmon (CSS). In the present study, we report the design and optimization of a dual-labelled TaqMan ™ probe targeting the V7 region of 16S rRNA gene for the detection of LAB in CSS. This quantitative PCR (qPCR) assays is useful for the simultaneous detection of the ten LAB genera commu ...
DOI:
10.1016/j.ijfoodmicro.2021.109504

41. Diet and ontogeny drastically alter the larval microbiome of the invertebrate model Galleria mellonella

Author:
Patrick Gohl; Christophe M.R. LeMoine; Bryan J. Cassone
Source:
Canadian journal of microbiology 2022 v.68 no.9 pp. 594-604
ISSN:
1480-3275
Subject:
Enterococcus; Galleria mellonella; Ralstonia; animal models; artificial diets; biodegradation; digestive system; innate immunity; instars; invertebrates; larvae; microbiology; microbiome; ontogeny; silk
Abstract:
... Larvae of the greater wax moth (Galleria mellonella) are an emerging animal model to study the innate immune response and biodegradation of plastic polymers. Both of these complex biological processes are likely impacted by the plasticity of host–microbe interactions, which remains understudied in lepidopterans. Consequently, we carried out 16S rRNA sequencing to explore the effect diet (natural, ...
DOI:
10.1139/cjm-2022-0058

42. Dietary Oyster (Crassostrea gigas) Extract Ameliorates Dextran Sulfate Sodium-Induced Chronic Experimental Colitis by Improving the Composition of Gut Microbiota in Mice

Author:
Tatsuya Ishida; Hiroyuki Matsui; Yoshikazu Matsuda; Takaki Shimono; Seiji Kanda; Toshimasa Nishiyama; Ryota Hosomi; Kenji Fukunaga; Munehiro Yoshida
Source:
Foods 2022 v.11 no.14 pp. -
ISSN:
2304-8158
Subject:
Crassostrea gigas; Enterococcus; Ruminococcus; blood; colitis; dextran sulfate; diet; digestive system; feces; histopathology; intestinal microorganisms; males; oysters; spleen; valeric acid
Abstract:
... Previously, we have reported that the intake of oyster extract (OE), prepared from Pacific oysters (Crassostrea gigas), can attenuate symptoms of dextran sulfate sodium (DSS)-induced acute experimental colitis in mice. Herein, we aimed to evaluate whether OE intake ameliorates chronic experimental colitis induced by repeated DSS administration in mice. Male C57BL/6J (4-week-old) mice were fed eith ...
DOI:
10.3390/foods11142032

43. Dietary exposure of copper and zinc oxides nanoparticles affect the fitness, enzyme activity, and microbial community of the model insect, silkworm Bombyx mori

Author:
Abrar Muhammad; Jintao He; Ting Yu; Chao Sun; Dier Shi; Yan Jiang; Yunlei Xianyu; Yongqi Shao
Source:
Science of the total environment 2022 v.813 pp. 152608
ISSN:
0048-9697
Subject:
Acetobacter; Bombyx mori; Enterococcus; Escherichia; Malpighian tubules; Pseudomonas; Ralstonia; alpha-amylase; antibacterial properties; antioxidants; bacterial communities; body weight; copper; dietary exposure; environment; enzyme activity; fat body; feces; gene expression; larvae; lysozyme; metabolism; microbiome; probiotics; silk glands; silkworms; species richness; survival rate; toxicology; zinc
Abstract:
... Copper and Zinc oxides nanoparticles (CuO and ZnO NPs, respectively) are among the most produced and commonly used engineered nanomaterials. They can be released into the environment, thereby causing health concerns and risks to biodiversity that indicate a need to evaluate their toxicological effects in a complex situation. Here, we used the insect model organism silkworm Bombyx mori to address t ...
DOI:
10.1016/j.scitotenv.2021.152608

44. Do the differences in egg contamination, penetration, and resistance against microorganisms among the hen genotypes exist?

Author:
Adam Kraus; Lukáš Zita; Ondřej Krunt; Darina Chodová; Monika Okrouhlá; Józefa Krawczyk
Source:
Annals of animal science 2022 v.22 no.2 pp. 561-574
ISSN:
2300-8733
Subject:
Enterococcus; Escherichia coli; White Leghorn; egg contamination; egg shell quality; egg weight; eggs; genotype; microbial contamination; partridges; storage time; temperature; weight loss
Abstract:
... The aim of this study was to evaluate and compare the impact of genotype and storage conditions (temperature and time) on microbiological contamination and eggshell quality. There were four genotypes of laying hens used, Czech Golden Spotted (CGS), Greenleg Partridge (GP), White Leghorn (WL) and commercial hybrid (CH) hens were included. After collection, the eggs were divided equally into five gr ...
DOI:
10.2478/aoas-2021-0056

45. Dynamics and correlation of microbial communities and metabolic compounds in doenjang-meju, a Korean traditional soybean brick

Author:
Hyung Min Kim; Dong Min Han; Ju Hye Baek; Byung Hee Chun; Che Ok Jeon
Source:
Food research international 2022 v.155 pp. 111085
ISSN:
0963-9969
Subject:
Aspergillus; Enterococcus; acetates; acetic acid; acetoin; bricks; butanol; butyric acid; cadaverine; carbon; fermentation; flavonoids; food research; fructose; glucose; glycerol; histamine; lactic acid; metabolites; principal component analysis; putrescine; soybeans; tyramine; volatile compounds
Abstract:
... To investigate the general fermentation characteristics of doenjang-meju (a Korean traditional soybean brick), they were periodically collected from eight different manufacturers during all fermentation stages, and their microbial communities and metabolic compounds (metabolites and volatile compounds) were analyzed. Bacillus and/or lactic acid bacteria (LAB, mainly Enterococcus) and Aspergillus w ...
DOI:
10.1016/j.foodres.2022.111085

46. Dysbiosis of the Human Urinary Microbiome and its Association to Diseases Affecting the Urinary System

Author:
Shehani Jayalath; Dhammika Magana-Arachchi
Source:
Indian journal of microbiology 2022 v.62 no.2 pp. 153-166
ISSN:
0046-8991
Subject:
Enterococcus; Klebsiella; Lactobacillus; Prevotella; Staphylococcus; Streptococcus; diabetes mellitus; diagnostic techniques; dysbiosis; genes; humans; hypertension; infancy; kidney diseases; microbiome; microorganisms; pathophysiology; renal function; ribosomal RNA; species richness; therapeutics; urine
Abstract:
... The human urinary microbiome, also termed urobiome, has been overlooked due to the clinical dogma of sterile urine, as reported by routine culture. However, evolving sensitive tools such as expanded quantitative urine culture, 16S ribosomal RNA gene sequencing, and next-generation sequencing have discovered a vast number of microorganisms present in urine, even in healthy individuals. Microbiome d ...
DOI:
10.1007/s12088-021-00991-x

47. Effect of blending encapsulated essential oils and organic acids as an antibiotic growth promoter alternative on growth performance and intestinal health in broilers with necrotic enteritis

Author:
Van Hieu Pham; Waseem Abbas; Jinyu Huang; Qiang He; Wenrui Zhen; Yuming Guo; Zhong Wang
Source:
Poultry science 2022 v.101 no.1 pp. 101563
ISSN:
0032-5791
Subject:
Eimeria; Enterococcus; Lactobacillus; bacitracin; blood serum; broiler chickens; cecum; dextran; diet; encapsulation; feed conversion; fluorescein; gene expression; glucagon-like peptide 2; growth performance; growth promotion; immune system; insulin-like growth factor II; intestinal microorganisms; isothiocyanates; jejunum; liver; males; monensin; necrotic enteritis; occludins; tumor necrosis factors
Abstract:
... The effects of a blend of encapsulated organic acids with essential oils (EOA) as an alternative to antimicrobial growth promoter (AGP) on growth performance and gut health of Eimeria spp./Clostridium perfringens (C. perfringens) in chickens infected with necrotic enteritis (NE) broilers was investigated. A total of 432 male Arbor Acres broilers (1-day-old) were randomly distributed into 6 treatme ...
DOI:
10.1016/j.psj.2021.101563

48. Effect of inoculum pretreatment on the microbial and metabolic dynamics of food waste dark fermentation

Author:
Lijun Luo; Saranya Sriram; Davidraj Johnravindar; Thomas Louis Philippe Martin; Jonathan W.C. Wong; Nirakar Pradhan
Source:
Bioresource technology 2022 v.358 pp. 127404
ISSN:
0960-8524
Subject:
Clostridium; Enterococcus; Prevotella; Proteobacteria; Streptococcus; acetates; biotransformation; butyrates; fermentation; food waste; heat; hydrogen; inoculum; sludge
Abstract:
... This study systematically evaluated and compared different inoculum pretreatment methods to quickly select dark fermentative bacteria from anaerobic sludge for the bioconversion of food waste. The hydrogen (H₂) production rate was found to be highest for 'heat + CO₂′ treated inoculum at 140.75 ± 2.61 mL/L/h compared to control experiments (60.27 ± 2.61 mL/L/h). At the same time, H₂ yield was found ...
DOI:
10.1016/j.biortech.2022.127404

49. Effectiveness of potassium ferrate (VI) as a green agent in the treatment and disinfection of carwash wastewater

Author:
Maciej Thomas; Przemysław Drzewicz; Angelika Więckol-Ryk; Balamurugan Panneerselvam
Source:
Environmental science and pollution research 2022 v.29 no.6 pp. 8514-8524
ISSN:
0944-1344
Subject:
Enterococcus; chemical oxygen demand; coagulation; disinfection; flocculants; flocculation; most probable number technique; odors; oxidation; pH; plate count; polyacrylamide; potassium; proteolysis; research; response surface methodology; total nitrogen; total organic carbon; total phosphorus; wastewater; wastewater treatment
Abstract:
... Carwash wastewater treatment with potassium ferrate (VI) (K₂FeO₄) was optimized by response surface methodology. The optimum conditions for chemical oxygen demand removal were established a pH 3.5, 0.328 g/L dose of K₂FeO₄, and with a process duration of 48 min. At these conditions, chemical oxygen demand, total organic carbon, total nitrogen, and total phosphorus decreased by 70.3, 58.9, 73.3, 82 ...
DOI:
10.1007/s11356-021-16278-z

50. Effectiveness of two wastewater disinfection strategies for the removal of fecal indicator bacteria, bacteriophage, and enteric viral pathogens concentrated using dead-end hollow fiber ultrafiltration (D-HFUF)

Author:
Asja Korajkic; Julie Kelleher; Orin C. Shanks; Michael P. Herrmann; Brian R. McMinn
Source:
Science of the total environment 2022 v.831 pp. 154861
ISSN:
0048-9697
Subject:
Adenoviridae; Bacteroides; Enterococcus; Escherichia coli; Norovirus; Polyomaviridae; chlorination; chlorine; coliphages; disinfection; environment; humans; probability; spring; temperature; ultrafiltration; ultraviolet radiation; wastewater; wastewater treatment
Abstract:
... Primary influent and final effluent samples were collected from wastewater treatment plants using either chlorination or ultraviolet (UV) disinfection biweekly for one year. Paired measurements were determined for fecal indicator bacteria (Escherichia coli and enterococci), cultivated bacteriophages (somatic, F+, and CB-390 coliphage and GB-124 Bacteroides phage), human-associated viral markers (h ...
DOI:
10.1016/j.scitotenv.2022.154861