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1. Antifungal activity, mycotoxin inhibitory efficacy, and mode of action of hop essential oil nanoemulsion against Fusarium graminearum

Author:
Haiyang Jiang; Shaobin Zhong; Paul Schwarz; Bingcan Chen; Jiajia Rao
Source:
Food chemistry 2023 v.400 pp. 134016
ISSN:
0308-8146
Subject:
Fusarium graminearum; antifungal properties; cell membranes; chitin; deoxynivalenol; essential oils; food chemistry; fungi; lipids; mechanism of action; mycelium; nanoemulsions; oils; pathogens; polysorbates; rice; spore germination
Abstract:
... This work aims to investigate antifungal, mycotoxin inhibitory efficacy of the hop essential oil (HEO) nanoemulsion and their mode of action (MOA) against Fusarium graminearum isolate, a fungal pathogen causing Fusarium Head Blight (FHB) in cereal crops. The HEO, primarily consisting of terpenes and terpenoids, was encapsulated in nanoemulsion droplets. Physically stable HEO-in-water nanoemulsion ...
DOI:
10.1016/j.foodchem.2022.134016

2. Carbohydrate-binding modules of ChiB and ChiC promote the chitinolytic system of Serratia marcescens BWL1001

Author:
Jiawen Liu; Qian Xu; Yan Wu; Di Sun; Jingrong Zhu; Cong Liu; Weijie Liu
Source:
Enzyme and microbial technology 2023 v.162 pp. 110118
ISSN:
0141-0229
Subject:
Salvia hispanica; Serratia marcescens; adsorption; carbohydrate binding; chitin; chitinase; electrophoresis; hydrolysis; ligands; synergism; technology
Abstract:
... Carbohydrate-binding modules (CBMs) are commonly found within chitinases, but their contributions to chitinolytic systems are poorly understood. To address this knowledge gap, full-length chitin-acting enzymes (ChiA, ChiB, ChiC, and CBP21) of Serratia marcescens BWL1001 and CBM-truncated versions (ChiB-dCBM and ChiC-dCBM) were heterologously expressed for enzymological analysis. The CBM5 of ChiB a ...
DOI:
10.1016/j.enzmictec.2022.110118

3. Compositional differences of β-glucan-rich extracts from three relevant mushrooms obtained through a sequential extraction protocol

Author:
Zaida Pérez-Bassart; Maria Jose Fabra; Antonio Martínez-Abad; Amparo López-Rubio
Source:
Food chemistry 2023 v.402 pp. 134207
ISSN:
0308-8146
Subject:
Grifola frondosa; Lentinula edodes; Pleurotus ostreatus; ambient temperature; biomass; chitin; cold; food chemistry; fractionation; mushrooms; polyphenols
Abstract:
... In this work, a sequential fractionation protocol (cold and hot aqueous and alkaline extractions) and detailed compositional analysis (gross composition, monosaccharide analysis, FTIR, TGA) was applied to three relevant mushrooms in terms of global production (Grifola frondosa, Lentinula edodes and Pleurotus ostreatus) aiming to understand what is preferentially extracted during fractionation and ...
DOI:
10.1016/j.foodchem.2022.134207

4. Incorporating chitin nanocrystal yields stronger soy protein gel: Insights into linear and nonlinear rheological behaviors by oscillatory shear tests

Author:
Qin Zhang; Lianzhou Jiang; Xiaonan Sui
Source:
Food hydrocolloids 2023 v.135 pp. 108177
ISSN:
0268-005X
Subject:
chitin; deformation; evolution; gel strength; gels; hydrocolloids; microstructure; nanocrystals; nuclear magnetic resonance spectroscopy; pH; shrimp; soy protein isolate; transmission electron microscopy; viscoelasticity
Abstract:
... Chitin nanocrystals (ChNs) were successfully fabricated from shrimp and their effects on the microstructure and gelling properties of glucono-δ-lactone-induced soy protein isolate (SPI) were investigated. Firstly, transmission electron microscopy (TEM) showed that the average length and width of ChNs were 208.8 nm and 19.2 nm, respectively. The zeta potentials of ChNs changed from +38.6 mV at pH 3 ...
DOI:
10.1016/j.foodhyd.2022.108177

5. Ultrasound-treatment as a promising strategy to develop biodegradable films obtained from mushroom waste biomass

Author:
Zaida Pérez-Bassart; Antonio Martínez-Abad; Alcira Reyes; Amparo López-Rubio; María José Fabra
Source:
Food hydrocolloids 2023 v.135 pp. 108174
ISSN:
0268-005X
Subject:
Grifola frondosa; Lentinula edodes; Pleurotus ostreatus; biodegradability; biopolymers; chitin; fungal biomass; glucans; hydrocolloids; industry; mushrooms; wastes
Abstract:
... This work reports on the valorisation of discarded mushroom biomass generated in the industry and the waste produced after a β-glucan extraction process from three different species (Grifola frondosa, Lentinula edodes, and Pleurotus ostreatus) for the production of biobased and biodegradable films. Initially, the composition of the starting material was characterized before film production. The re ...
DOI:
10.1016/j.foodhyd.2022.108174

6. A 3D printable dynamic nanocellulose/nanochitin self-healing hydrogel and soft strain sensor

Author:
Pejman Heidarian; Saleh Gharaie; Hossein Yousefi; Mariana Paulino; Akif Kaynak; Russell Varley; Abbas Z. Kouzani
Source:
Carbohydrate polymers 2022 v.291 pp. 119545
ISSN:
0144-8617
Subject:
ambient temperature; biocompatibility; cellulose; cellulose nanofibers; chitin; chitosan; crosslinking; hydrogels; hydrogen; imines; tannins
Abstract:
... Presented here is the synthesis of a 3D printable nano-polysaccharide self-healing hydrogel for flexible strain sensors. Consisting of three distinct yet complementary dynamic bonds, the crosslinked network comprises imine, hydrogen, and catecholato-metal coordination bonds. Self-healing of the hydrogel is demonstrated by macroscopic observation, rheological recovery, and compression measurements. ...
DOI:
10.1016/j.carbpol.2022.119545

7. Acinetobacter indicus CCS-12: A New Bacterial Source for the Production and Biochemical Characterization of Thermostable Chitinase with Promising Antifungal Activity

Author:
Fatima Akram; Ikram ul Haq; Ayesha Roohi; Rabia Akram
Source:
Waste and biomass valorization 2022 v.13 no.7 pp. 3371-3388
ISSN:
1877-2641
Subject:
Acinetobacter; agitation; antifungal properties; biological control; biological control agents; biomass; calcium; chitin; chitinase; enzyme activity; food additives; half life; malt extract; molecular weight; pH; phosphates; plant pathogens; polyacrylamide gel electrophoresis; temperature; thermal stability; wastes
Abstract:
... BACKGROUND: In the recent epoch, chitinolytic enzymes have attained much attention as promising biocontrol agents and ability to convert recalcitrant chitinous wastes into valuable products. Some chitinolytic microorganisms have emerged as the potential candidate to carry a noticeable ability to degrade this polysaccharide in nature. OBJECTIVE: Therefore, in this study, a new bacterial strain Acin ...
DOI:
10.1007/s12649-022-01753-6

8. Adsorption of copper (II) and cadmium (II) ions by in situ doped nano-calcium carbonate high-intensity chitin hydrogels

Author:
Detian Dou; Donglai Wei; Xin Guan; Zhenjiang Liang; Lihong Lan; Xiongdiao Lan; Pengru Liu; Huiqun Mo; Ping Lan
Source:
Journal of hazardous materials 2022 v.423 pp. 127137
ISSN:
0304-3894
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; cadmium; calcium carbonate; chelation; chitin; composite materials; copper; hydrogels; macropores; models; nitrogen; oxygen; pH; sorption isotherms; temperature
Abstract:
... Most natural polymers exhibit limited functional groups, which is not favourable for the adsorption of various ions and their utilisation. To overcome this drawback, a novel in-situ-doped nano-calcium carbonate (CaCO₃) chitin hydrogel was synthesised as an efficient adsorbent for Cu (II) and Cd (II) ions. Scanning electron microscopy and Brunauer–Emmett–Teller results revealed that the synthesised ...
DOI:
10.1016/j.jhazmat.2021.127137

9. Adsorption of the dye Acid Blue 158 premetalized with chromium on chitin/chitosan

Author:
Malgorzata M. Jaworska; Urszula Filipkowska; Zofia Modrzejewska
Source:
Carbohydrate polymers 2022 v.298 pp. 120122
ISSN:
0144-8617
Subject:
adsorption; chitin; chitosan; chromium; dyes; fabrics; leather; models; sorption isotherms
Abstract:
... Removal of the premetalized dyes from the effluents of textile and leather industries is still open. The work aims to investigate functional groups taking part in the sorption of premetalized dye Acid Blue 158:Cr on chitin/chitosan and to investigate the mechanism of the sorption. The process was spontaneous (negative value of the Gibbs function), endothermic (ΔH = 0.2679 kJ/mol) with an affinity ...
DOI:
10.1016/j.carbpol.2022.120122

10. Adsorption properties of heavy metals and antibiotics by chitosan from larvae and adult Trypoxylus dichotomus

Author:
Qiushi Jiang; Zhaolian Han; Weiping Li; Tingxu Ji; Yafeng Yuan; Junjie Zhang; Chunli Zhao; Zhiqiang Cheng; Song Wang
Source:
Carbohydrate polymers 2022 v.276 pp. 118735
ISSN:
0144-8617
Subject:
Trypoxylus dichotomus; adsorption; chitin; chitosan; levofloxacin; models; molecular weight; nanofibers; sulfamethoxazole; tetracycline
Abstract:
... Chitosan was prepared by hydrothermal deacetylation from multi-step protein purification chitin based on Trypoxylus dichotomus, for treating heavy metals and antibiotics. Chitosan with higher deacetylation degree and lower molecular weight were synthesized. The adult chitosan was composed of nanofibers arranged more evenly, showing higher yield, thermal stabilities and antimicrobial properties. Th ...
DOI:
10.1016/j.carbpol.2021.118735

11. Advances in the application of chitosan as a sustainable bioactive material in food preservation

Author:
Dawei Yu; Zijuan Yu; Wenyu Zhao; Joe M. Regenstein; Wenshui Xia
Source:
Critical reviews in food science and nutrition 2022 v.62 no.14 pp. 3782-3797
ISSN:
1549-7852
Subject:
biofilm; chitin; chitosan; food preservation; nutrition; oxidation
Abstract:
... Chitosan is obtained from chitin and considered to be one of the most abundant natural polysaccharides. Due to its functional activity, chitosan has received intense and growing interest in terms of applications for food preservation over the last half-century. Compared with earlier studies, recent research has increasingly focused on the exploration of preservation mechanism as well as the target ...
DOI:
10.1080/10408398.2020.1869920

12. AgNP anchored carbon dots and chitin nanowhisker embedded soy protein isolate films with freshness preservation for active packaging

Author:
Rekha Rose Koshy; Arunima Reghunadhan; Siji K. Mary; Sandeep Sadanandan; Seno Jose; Sabu Thomas; Laly A. Pothen
Source:
Food packaging and shelf life 2022 v.33 pp. 100876
ISSN:
2214-2894
Subject:
antioxidants; biocomposites; biodegradability; biopolymers; chitin; cost effectiveness; freshness; industry; nanocomposites; nanocrystals; nanosilver; shelf life; soy protein isolate; synergism; tensile strength; thermal stability; toxicity; water content
Abstract:
... Biodegradable substitutes to the commonly practiced packaging materials are always in high demand. Active biopolymer film was obtained from soy-protein isolate (SPI) and the antibacterial properties were introduced by incorporating silver nanoparticles. Active bio-composite films incorporating silver nanoparticles (AgNP) are much sought after in the food packaging industry owing to their ability t ...
DOI:
10.1016/j.fpsl.2022.100876

13. Alteration of gut microbiota composition and function of Indian major carp, rohu (Labeo rohita) infected with Argulus siamensis

Author:
Hemanta Kumar Mondal; Usha Jyoti Maji; Sriprakash Mohanty; Pramoda Kumar Sahoo; Nikhil Kumar Maiti
Source:
Microbial pathogenesis 2022 v.164 pp. 105420
ISSN:
0882-4010
Subject:
Argulus siamensis; Hyphomicrobium; Labeo rohita; Pirellula; Stenotrophomonas; Streptomyces; carp; chitin; chitinase; ectoparasites; homeostasis; intestinal microorganisms; osmotolerance; pathogenesis
Abstract:
... Gut microbiome homeostasis is critical in preventing diseases. However, the effect of disease on gut microbiota assembly remains unclear. At present, there are no reports on the composition and functional analysis of intestinal microbiota of Indian major carp, rohu (L. rohita) infected with ectoparasite, Argulus. In this study, we analysed and compared the intestinal microbiota of healthy and Argu ...
DOI:
10.1016/j.micpath.2022.105420

14. Amino-functionalized polysaccharide derivatives: Synthesis, properties and application

Author:
Anwar Jardine
Source:
Current research in green and sustainable chemistry 2022 v.5 pp. 100309
ISSN:
2666-0865
Subject:
antioxidants; biopolymers; cellulose; chitin; ecosystems; feedstocks; genes; green chemistry; research; solubility; tensile strength; transfection; wastes
Abstract:
... Polysaccharides, cellulose and chitin are fundamental structural biopolymers of our biome, they therefore demonstrate relatively high tensile strength compared to other biopolymers and great diversity. Aqueous insolubility is a natural requirement for these polymers to be fit for purpose. However, non-natural aminated polysaccharides, such as 6-deoxy-6-amino derivatives, display improved solubilit ...
DOI:
10.1016/j.crgsc.2022.100309

15. Analysis of clinical trials on biomaterial and therapeutic applications of chitosan: A review

Author:
Maithili N. Kantak; Sonali S. Bharate
Source:
Carbohydrate polymers 2022 v.278 pp. 118999
ISSN:
0144-8617
Subject:
biocompatible materials; chitin; chitosan; drug carriers; drugs; immunogenicity; polymers
Abstract:
... Chitosan is a modified natural carbohydrate polymer derived from chitin that occurs in many natural sources. It has a diverse range of applications in medical and pharmaceutical sciences. Its primary and permitted use is biomaterial in medical devices. Chitosan and its derivatives also find utility in pharmaceuticals as an excipient, drug carrier, or therapeutic agent. The USFDA has approved chito ...
DOI:
10.1016/j.carbpol.2021.118999

16. Antagonistic activity of Bacillus subtilis CW14 and its β-glucanase against Aspergillus ochraceus

Author:
Meng Zhao; Duanmu Liu; Zhihong Liang; Kunlun Huang; Xiaoyan Wu
Source:
Food control 2022 v.131 pp. 108475
ISSN:
0956-7135
Subject:
Aspergillus ochraceus; Bacillus subtilis; Komagataella pastoris; antifungal properties; cell walls; chitin; food safety; genome; germination; glycosidases; glycosides; metabolism; mycelium; oxygen; ribonucleases
Abstract:
... Bacillus subtilis CW14 and β-glucanase produced were used to inhibit Aspergillus ochraceus, for detecting its antifungal activity and exploring the mechanism. Results showed that CW14 supernatants with molecular weights (Mw) >10 kDa had the best antifungal activity, increased the contents of chitin and active oxygen (ROS), inhibited mycelial growth and spores germination of A. ochraceus, and incre ...
DOI:
10.1016/j.foodcont.2021.108475

17. Antifungal Agent Chitooligosaccharides Derived from Solid-State Fermentation of Shrimp Shell Waste by Pseudonocardia antitumoralis 18D36-A1

Author:
Widyastuti Widyastuti; Fendi Setiawan; Chasya Al Afandy; Arik Irawan; Aspita Laila; Ni Luh Gede Ratna Juliasih; Wawan Abdullah Setiawan; Masayoshi Arai; John Hendri; Andi Setiawan
Source:
Fermentation 2022 v.8 no.8 pp. -
ISSN:
2311-5637
Subject:
Pseudonocardia; agar; bioactive properties; biodegradation; biopolymers; chitin; chitooligosaccharides; chromatography; phylogeny; shrimp; shrimp shells; solid state fermentation; wastes; Indonesia
Abstract:
... Shrimp shell waste is a potential source of the biopolymer chitin. Through fermentation, chitin can be converted into its derivative products. This study aimed to isolate and characterize the products of the biodegradation of chitin from shrimp shell waste through a solid-state fermentation process using actinomycetes. Actinomycete isolates were obtained from tunicate marine biota collected from t ...
DOI:
10.3390/fermentation8080353

18. Antifungal activity and mechanism of thymol against Fusarium oxysporum, a pathogen of potato dry rot, and its potential application

Author:
Yanlin Liu; Shihao Liu; Xunguang Luo; Xiao Wu; Jie Ren; Xiaoqing Huang; Shun Feng; Xiaoyi Lin; Maozhi Ren; Pan Dong
Source:
Postharvest biology and technology 2022 v.192 pp. 112025
ISSN:
0925-5214
Subject:
Fusarium oxysporum; additive effect; antifungal properties; biological control; carbendazim; chitin; dose response; gene expression regulation; gene ontology; inhibitory concentration 50; mancozeb; metabolism; monoterpenoids; mycelium; pathogenicity; pathogens; phenol; potatoes; spore germination; spores; temperature; thymol; toxicity; viability
Abstract:
... Dry rot is a major disease of potato during storage, which is caused by several Fusarium species. Biological control based on natural bioactive compounds that inhibit tuber disease provides an attractive alternative because they are ecofriendly and low toxic. In this study, a monoterpene phenol thymol (2-isopropyl-5-methylphenol) was found to have an effective antifungal effect against Fusarium ox ...
DOI:
10.1016/j.postharvbio.2022.112025

19. Antifungal activity of wild bergamot (Monarda fistulosa) essential oil against postharvest fungal pathogens of banana fruits

Author:
Seema A. Kulkarni; Periyar Selvam Sellamuthu; Santhosh Kumar Nagarajan; Thirumurthy Madhavan; Emmanuel Rotimi Sadiku
Source:
South African journal of botany 2022 v.144 pp. 166-174
ISSN:
0254-6299
Subject:
Colletotrichum musae; Lasiodiplodia theobromae; Monarda fistulosa; anthracnose; antifungal properties; bananas; carvacrol; cell walls; chemical composition; chitin; chitin synthase; computer simulation; crown rot; essential oils; fungi; growth retardation; oils; thymol; volatilization
Abstract:
... This study aimed to examine the antifungal activity of wild bergamot (Monarda fistulosa) essential oil on Colletotrichum musae and Lasiodiplodia theobromae, the causative organisms of anthracnose and crown-rot diseases of banana fruits, respectively. Chitin synthase is a promising target for antifungal compounds, since it is involved in synthesizing chitin, which forms a major proportion of the fu ...
DOI:
10.1016/j.sajb.2021.08.019

20. Antimicrobial Mechanisms of Enterocin CHQS Against Candida albicans

Author:
Qi Wang; Lei Pan; Ye Han; Zhijiang Zhou
Source:
Current microbiology 2022 v.79 no.7 pp. 191
ISSN:
0343-8651
Subject:
Candida albicans; Enterococcus faecalis; amphotericin B; antimicrobial properties; cell walls; chitin; fluorescent dyes; fungi; membrane potential; minimum inhibitory concentration; mitochondrial membrane; pathogens; reactive oxygen species
Abstract:
... Candida albicans is the most common fungal pathogen in hospital-acquired infections, which is extremely harmful to health. The increasing fungal infections is requiring the rapid development of novel antifungal agents. In this study, the antimicrobial activity of CHQS, an enterocin isolated from Enterococcus faecalis TG2 against C. albicans was confirmed by the minimum inhibitory concentration, mi ...
DOI:
10.1007/s00284-022-02878-6