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1. Heterotrophic cultivation of T. obliquus under non-axenic conditions by uncoupled supply of nitrogen and glucose

Author:
Di Caprio, Fabrizio; Altimari, Pietro; Iaquaniello, Gaetano; Toro, Luigi; Pagnanelli, Francesca
Source:
Biochemical engineering journal 2019 v.145 pp. 127-136
ISSN:
1369-703X
Subject:
bacterial contamination,   etc   ; algae culture; bacteria; biomass production; glucose; microalgae; nitrates; nitrogen;     Show all 8 Subjects
Abstract:
... A fed-batch strategy is proposed to produce microalgae biomass under non-axenic heterotrophic conditions. The strategy induces the alternation of N-deplete (Glucose-replete) and N-replete (Glucose-deplete) cultivation phases by the periodic and uncoupled supply of glucose and NO3− to the culture. Cultivation of the microalga T. obliquus with this strategy reduced the ratio of the bacteria to micro ...
DOI:
10.1016/j.bej.2019.02.020

2. Rapid and sensitive colorimetric detection of pathogens based on silver–urease interactions

Author:
SinghBoth of these authors contributed equally., Pargat; Kakkar, Saloni; Bharti,; Kumar, Rajesh; Bhalla, Vijayender
Source:
Chemical communications 2019 v.55 no.33 pp. 4765-4768
ISSN:
1364-548X
Subject:
bacterial contamination,   etc   ; chemical compounds; chemical reactions; colorimetry; drinking water; dyes; microbial detection; nanosilver; pH; pathogens; urease;     Show all 11 Subjects
Abstract:
... Herein, we demonstrate a facile and economic approach for colorimetric detection of microbial pathogens in drinking water, employing silver–urease interactions. In the presence of harmful pathogens, receptor coated silver nanoparticles (AgNPs) preferentially bind to the bacterial surface and urease catalytically elevates the pH of the solution, which is sensed by a pH responsive chromogenic dye. T ...
DOI:
10.1039/c9cc00225a

3. Experimentally broken faecal sacs affect nest bacterial environment, development and survival of spotless starling nestlings

Author:
Azcárate‐García, Manuel; Ruiz‐Rodríguez, Magdalena; Díaz‐Lora, Silvia; Ruiz‐Castellano, Cristina; Soler, Juan José
Source:
Journal of avian biology 2019 v.50 no.3
ISSN:
0908-8857
Subject:
bacterial contamination,   etc   ; Sturnus; adults; bacteria; birds; ectoparasites; nestlings; nests; parents; predation; predators; probability;     Show all 12 Subjects
Abstract:
... Nestlings of most avian species produce faecal sacs, which facilitate the removal of nestlings’ excrements by parents, thereby reducing proliferation of potentially pathogenic microorganisms and/or detectability by predators and parasites. The nest microbial environment that birds experience during early life might also affect their development and thus, faecal sacs facilitating parental removal m ...
DOI:
10.1111/jav.02044

4. Aseptic production of citric and isocitric acid from crude glycerol by genetically modified Yarrowia lipolytica

Author:
Rzechonek, Dorota A.; Dobrowolski, Adam; Rymowicz, Waldemar; Mirończuk, Aleksandra M.
Source:
Bioresource technology 2019 v.271 pp. 340-344
ISSN:
0960-8524
Subject:
bacterial contamination,   etc   ; Yarrowia lipolytica; aseptic conditions; glycerol; isocitric acid; pH; wastes; yeasts;     Show all 8 Subjects
Abstract:
... The unconventional yeast Yarrowia lipolytica is known for its capacity to produce citric or isocitric acid from glycerol. In this study a reduction of production cost was achieved by using cheap crude glycerol and conducting the production at pH 3 to prevent bacterial contamination. In this study a Y. lipolytica strain overexpressing Gut1 and Gut2 was used. For the modified strain, crude glycerol ...
DOI:
10.1016/j.biortech.2018.09.118

5. Sequential bacterial sampling of the midline incision in horses undergoing exploratory laparotomy

Author:
Isgren, C. M.; Salem, S. E.; Townsend, N. B.; Timofte, D.; Maddox, T. W.; Archer, D. C.
Source:
Equine veterinary journal 2019 v.51 no.1 pp. 38-44
ISSN:
0425-1644
Subject:
bacterial contamination,   etc   ; antibiotic resistance; bacteremia; bacteria; bacterial culture; cohort studies; colic; horses; laparotomy; methicillin-resistant Staphylococcus aureus; phenotype; risk;     Show all 12 Subjects
Abstract:
... BACKGROUND: There is limited information about bacterial isolates that are present on the equine midline incision during and following exploratory laparotomy. OBJECTIVES: To investigate the bacterial species cultured from the ventral midline pre‐, intra‐ and post‐ laparotomy, whether particular bacterial isolates are associated with the development of surgical site infections (SSIs) and to report ...
DOI:
10.1111/evj.12958

6. Whole genome sequencing uses for foodborne contamination and compliance: Discovery of an emerging contamination event in an ice cream facility using whole genome sequencing

Author:
Allard, Marc W.; Strain, Errol; Rand, Hugh; Melka, David; Correll, William A.; Hintz, Leslie; Stevens, Eric; Timme, Ruth; Lomonaco, Sara; Chen, Yi; Musser, Steven M.; Brown, Eric W.
Source:
Infection, genetics, and evolution 2019 v.73 pp. 214-220
ISSN:
1567-1348
Subject:
bacterial contamination,   etc   ; Listeria monocytogenes; compliance; dairy processing plants; databases; food contamination; food pathogens; ice cream; listeriosis; monitoring; public health; sequence analysis; single nucleotide polymorphism; Florida;     Show all 14 Subjects
Abstract:
... We review how FDA surveillance identifies several ways that whole genome sequencing (WGS) improves actionable outcomes for public health and compliance in a case involving Listeria monocytogenes contamination in an ice cream facility. In late August 2017 FDA conducted environmental sampling inside an ice cream facility. These isolates were sequenced and deposited into the GenomeTrakr databases. In ...
DOI:
10.1016/j.meegid.2019.04.026

7. Triple-functional polyetheretherketone surface with enhanced bacteriostasis and anti-inflammatory and osseointegrative properties for implant application

Author:
Xu, Xiao; Li, Yongliang; Wang, Lixin; Li, Yan; Pan, Jijia; Fu, Xiaoming; Luo, Zuyuan; Sui, Yi; Zhang, Siqi; Wang, Liang; Ni, Yaofeng; Zhang, Lei; Wei, Shicheng
Source:
Biomaterials 2019 v.212 pp. 98-114
ISSN:
0142-9612
Subject:
bacterial contamination,   etc   ; Beagle; antibacterial properties; bacterial colonization; bone formation; coatings; dental prosthesis; dexamethasone; femur; humans; inflammation; mesenchymal stromal cells; models; modulus of elasticity; orthopedics; physicochemical properties;     Show all 16 Subjects
Abstract:
... Polyetheretherketone (PEEK) is considered a potential orthopedic/dental material because of its excellent mechanical and chemical properties (e.g., similar elastic modulus to that of human bone). However, the poor bacteriostasis and anti-inflammatory and osseointegrative properties of bioinert PEEK impede its clinical application. We previously developed a facile and versatile surface modification ...
DOI:
10.1016/j.biomaterials.2019.05.014

8. Bacteriological and physicochemical quality of treated wastewater of the Mzar treatment plant

Author:
Bourouache, M.; Mimouni, R.; Ait Alla, A.; Hamadi, F.; El Boulani, A.; Bihadassen, B.
Source:
Applied water science 2019 v.9 no.4 pp. 86
ISSN:
2190-5487
Subject:
bacterial contamination,   etc   ; Enterococcus; biochemical oxygen demand; chemical oxygen demand; electrical conductivity; fecal bacteria; green infrastructure; groundwater; microbiological quality; pH; total suspended solids; ultraviolet radiation; wastewater;     Show all 13 Subjects
Abstract:
... In order to use purified wastewater on watering green spaces of Agadir city, we conducted this study to assess the bacteriological and physicochemical quality of treated wastewater in Mzar treatment plant. To realize these objectives, we analyzed four types of waters: raw water (RW), decanted water, purified water and purified water treated by the ultraviolet radiation (PWUV). The biologically ana ...
DOI:
10.1007/s13201-019-0958-0

9. Experimental study of effectiveness of robotic cleaning for fish-processing plants

Author:
Langøyli Giske, Lars Andre; Bjørlykhaug, Emil; Løvdal, Trond; Mork, Ola Jon
Source:
Food control 2019 v.100 pp. 269-277
ISSN:
0956-7135
Subject:
bacterial contamination,   etc   ; Photobacterium phosphoreum; Pseudomonas fluorescens; Pseudomonas putida; automation; bacteria; biofilm; cleaning; fish; fish processing plants; hygiene; industrialization; microbiological risk assessment; profitability; prototypes; robots; spoilage;     Show all 17 Subjects
Abstract:
... This paper presents the development and experimental testing of the effectiveness of a robotic cleaning system for fish processing plants. The processing of fish introduces a substantial risk of bacterial contamination, which can cause the spoilage of fish and pose a threat to consumers’ health. Good operational hygiene and precautions, in addition to regular cleaning of the processing plants, are ...
DOI:
10.1016/j.foodcont.2019.01.029

10. The fates of microbial populations on pig carcasses during slaughtering process, on retail cuts after slaughter, and intervention efficiency of lactic acid spraying

Author:
Van Ba, Hoa; Seo, Hyun-Woo; Seong, Pil-Nam; Kang, Sun-Moon; Cho, Soo-Huyn; Kim, Yoon-Seok; Park, Beom-Young; Moon, Sung-Sil; Kang, Se-Ju; Choi, Yong-Min; Kim, Jin-Hyoung
Source:
International journal of food microbiology 2019 v.294 pp. 10-17
ISSN:
0168-1605
Subject:
bacterial contamination,   etc   ; Acinetobacter; Corynebacterium xerosis; Enterococcus; Escherichia; Salmonella; Shigella; Staphylococcus hyicus; cold treatment; hemorrhage; lactic acid; microbiological quality; microorganisms; pig carcasses; pork; ribosomal RNA; sequence analysis; slaughter; spraying;     Show all 19 Subjects
Abstract:
... This study was conducted to detect and identify microbial populations on pig carcasses at different slaughtering stages and on retail pork cuts at 24 h after slaughter as well as to evaluate the intervention efficiency of sprays containing different concentrations (2% and 4%) of lactic acid. The sprays were applied to the carcass surfaces at the end of the slaughter line. Microbial samples were co ...
DOI:
10.1016/j.ijfoodmicro.2019.01.015

11. Bacterial indicator reduction in dairy manure using hybrid zero-valent iron (h-ZVI) system

Author:
Han, Sunghwa; Huang, Yongheng; Liu, Zong
Source:
Environmental science and pollution research international 2019 v.26 no.11 pp. 10790-10799
ISSN:
0944-1344
Subject:
bacterial contamination,   etc   ; Escherichia coli; adsorption; animals; bacteria; cell membranes; dairy manure; disease outbreaks; environmental health; fluorescence microscopy; herds; industry; iron; nitrates; staining; transmission electron microscopy; wastewater treatment;     Show all 17 Subjects
Abstract:
... Novel and efficient animal wastewater treatment technologies of bacteria reduction are needed for preventing disease outbreak in animal herds and safeguarding environmental health. Zero-valent iron (ZVI) has been used to treat bacteria contaminated water for the past decades, but its passivation issue has been a major challenge. In this study, batch tests were performed to evaluate the effect of a ...
DOI:
10.1007/s11356-019-04501-x

12. Inactivation of Escherichia coli O157 and Salmonella Enteritidis in raw beef liver by gamma irradiation

Author:
Kawasaki, Susumu; Saito, Mie; Mochida, Mari; Noviyanti, Fia; Seito, Hajime; Todoriki, Setsuko
Source:
Food microbiology 2019 v.78 pp. 110-113
ISSN:
0740-0020
Subject:
bacterial contamination,   etc   ; Escherichia coli O157; Salmonella Enteritidis; antioxidants; confidence interval; death; food matrix; gamma radiation; ground beef; irradiation; liver; pathogens; raw meat; refrigeration; temperature; vacuum packaging;     Show all 16 Subjects
Abstract:
... Irradiation of ground beef and beef liver inoculated with Escherichia coli O157 466 and DT66 and Salmonella Enteritidis 3313 were performed with gamma rays from cobalt-60 at refrigerated and frozen temperatures under air- and vacuum-packaged conditions. Results showed that D10 values for all pathogens in frozen beef liver were higher than those in frozen ground beef samples, with significant diffe ...
DOI:
10.1016/j.fm.2018.10.011

13. Inactivation of Staphylococcus aureus and Escherichia coli in milk by different processing sequences of ultrasound and heat

Author:
Li, Jiao; Wang, Jun; Zhao, Xihong; Wang, Wenjun; Liu, Donghong; Chen, Shiguo; Ye, Xingqian; Ding, Tian
Source:
Journal of food safety 2019 v.39 no.2 pp. e12614
ISSN:
0149-6085
Subject:
bacterial contamination,   etc   ; Escherichia coli; Staphylococcus aureus; bacteria; color; food processing; heat; milk; milk quality; pH; particle size; pasteurization; protein content; ultrasonic treatment; viscosity; whey protein; zeta potential;     Show all 17 Subjects
Abstract:
... Different processing sequences of ultrasound and heat were applied for the inactivation of Staphylococcus aureus and Escherichia coli in milk. The changes in whey protein content, particle size, zeta potential, pH, viscosity, and color values were studied to evaluate the effects on the quality of milk. Results indicated ultrasound treatment (600 W, 5 min) with postheating (63 °C 5 min) reduced S. ...
DOI:
10.1111/jfs.12614

14. Milk hygiene and consumption practices in the Gambia

Author:
Washabaugh, Jennifer R.; Olaniyan, Olawale F.; Secka, Arss; Jeng, Momodou; Bernstein, Robin M.
Source:
Food control 2019 v.98 pp. 303-311
ISSN:
0956-7135
Subject:
bacterial contamination,   etc   ; Enterobacteriaceae; agropastoralism; ambient temperature; children; cleaning; farms; food safety; hygiene; infants; insects; interviews; markets; milk; milk consumption; raw milk; storage conditions; Gambia;     Show all 18 Subjects
Abstract:
... Raw milk is a common component of agropastoralist diet in The Gambia. Characterization of raw milk consumption and handling practices in the country is limited, as is knowledge of bacterial contamination of raw milk sold by herdsmen or at informal markets, which may impact food safety and consumer health. We conducted a two part study in Gambia to comprehensively address these research gaps. In St ...
DOI:
10.1016/j.foodcont.2018.11.042

15. The dark side of organic vegetables: interactions of human enteropathogenic bacteria with plants

Author:
Jo, Sung Hee; Park, Jeong Mee
Source:
Plant biotechnology reports 2019 v.13 no.2 pp. 105-110
ISSN:
1863-5466
Subject:
bacterial contamination,   etc   ; Escherichia coli O157; Salmonella; adhesion; bacteria; enteropathogens; food contamination; host plants; humans; innate immunity; organic foods; vegetables; virulence; virulent strains;     Show all 14 Subjects
Abstract:
... Many recent studies reported that several pathogenic bacteria rely on multiple hosts during their life cycle. Specifically, Gram-negative enteropathogenic bacteria, such as Salmonella or Escherichia coli O157:H7, infect both human and plant hosts. These multi-kingdom pathogenic bacteria cause food-associated outbreaks in human by active invasion of the host. In the current review, we cover the int ...
DOI:
10.1007/s11816-019-00536-1

16. Influences on thermo-resistance of boar spermatozoa

Author:
Schulze, M.; Jakop, U.; Jung, M.; Cabezón, F.
Source:
Theriogenology 2019 v.127 pp. 15-20
ISSN:
0093-691X
Subject:
bacterial contamination,   etc   ; HACCP; boars; electrical conductivity; heat stability; heat tolerance; mitochondria; prognosis; refractive index; semen quality; sperm concentration; spermatozoa; statistical models; temperature;     Show all 14 Subjects
Abstract:
... The aim of this study was to investigate the influence of semen production management in 25 European boar studs on thermo-resistance (TRT) of boar spermatozoa. TRT is an important semen characteristic, easy to determine, and is used to explain variations in pig fertility. During a study period from 2013 to 2018, 905 ejaculates were analyzed for TRT on day 7 of semen storage. Statistical models sho ...
DOI:
10.1016/j.theriogenology.2018.12.022

17. Low-cost shoot multiplication and improved growth in different cultivars of Canna indica

Author:
Purshottam, Dharmendra Kumar; Srivastava, Ramesh Kumar; Misra, Pratibha
Source:
3 Biotech 2019 v.9 no.3 pp. 67
ISSN:
2190-572X
Subject:
bacterial contamination,   etc   ; Canna indica; buds; cultivars; gardens; germplasm; glass; liquids; ornamental plants; rhizomes; seed coat; seed germination; seeds; shoots; soaking; tissue culture; India;     Show all 17 Subjects
Abstract:
... Canna (Canna indica L.) is an ornamental landscape plant used specially for the garden borders and beds. It grows in tropical and subtropical countries including India. Canna is a less explored crop, mainly because it is a slow growing monocot with extremely hard seed coat and difficult to establish in vitro, as bacterial contamination is carried through the soil-grown rhizome. Many cultivars (ca. ...
DOI:
10.1007/s13205-019-1583-1

18. Preservation of boar semen: An update

Author:
Pezo, Felipe; Romero, Fernando; Zambrano, Fabiola; Sánchez, Raúl Segundo
Source:
Reproduction in domestic animals 2019 v.54 no.3 pp. 423-434
ISSN:
0936-6768
Subject:
bacterial contamination,   etc   ; additives; animal proteins; artificial insemination; boars; freezing; ice nucleation; intracytoplasmic sperm injection; liquids; natural mating; pork industry; pregnancy rate; semen; sperm quality; storage temperature; vitrification;     Show all 16 Subjects
Abstract:
... In the pork industry, artificial insemination and the storage of boar semen in liquid at 17°C are routinely applied to optimize the ejaculate and bring about rapid genetic changes that are reflected in the animal protein. Although the results are satisfactory, they are below what occurs with natural mating. It is currently possible to preserve boar semen with storage at 17°C and slow freezing, sin ...
DOI:
10.1111/rda.13389

19. Review of inulinase production using solid-state fermentation

Author:
Das, Deblina; Bhat M, Ramananda; Selvaraj, Raja
Source:
Annals of microbiology 2019 v.69 no.3 pp. 201-209
ISSN:
1590-4261
Subject:
bacterial contamination,   etc   ; biofuels; bioreactors; biotransformation; citric acid; energy; fructose; industry; inulinase; lactic acid; microbial oils; microorganisms; models; monitoring; solid state fermentation; syrups; wastewater treatment;     Show all 17 Subjects
Abstract:
... The purpose of the present study is to critically analyze the recent literature covering the production of inulinase enzyme from various sources by solid-state fermentation and discuss various approaches to increase its production in solid-state fermentation, purification, and its properties. The review deals with the solid-state fermentative production of inulinase production. Inulinases have man ...
DOI:
10.1007/s13213-019-1436-5

20. New insights on Listeria monocytogenes growth in pressurised cooked ham: A piezo-stimulation effect enhanced by organic acids during storage

Author:
Bover-Cid, Sara; Serra-Castelló, Cristina; Dalgaard, Paw; Garriga, Margarita; Jofré, Anna
Source:
International journal of food microbiology 2019 v.290 pp. 150-158
ISSN:
0168-1605
Subject:
bacterial contamination,   etc   ; Listeria monocytogenes; anti-infective agents; bacterial growth; computer software; cooked foods; food contamination; ham; lactic acid; logit analysis; models; pathogens; temperature; vacuum packaging;     Show all 14 Subjects
Abstract:
... The aim of the present study was to understand growth and survival responses of Listeria monocytogenes during the storage of high pressure processed (HPP) cooked ham formulated with organic acids to inhibit growth of the pathogen. Cooked ham batches were manufactured without organic acids (control), with potassium lactate (2.8% or 4%) or with potassium lactate and sodium diacetate (2.0% + 0.11% or ...
DOI:
10.1016/j.ijfoodmicro.2018.10.008