Inhibitory effects of high molecular weight chitosan coating on ‘Hom Thong’ banana fruit softening

2021 ◽  
Vol 29 ◽  
pp. 100731
Author(s):  
Arisa Wantat ◽  
Pranee Rojsitthisak ◽  
Kanogwan Seraypheap
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Banana Fruit ◽  
Fruit Softening ◽  
Inhibitory Effects ◽  
Chitosan Coating ◽  
High Molecular Weight Chitosan

scholarly journals Inhibition of selected pathogens inoculated on the surface of catfish fillets by high molecular weight chitosan coating

2018 ◽  
Vol 54 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Baris Karsli ◽  
Emre Caglak ◽  
Dapeng Li ◽  
Nancy K. Rubio ◽  
Marlene Janes ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Chitosan Coating ◽  
Catfish Fillets ◽  
High Molecular Weight Chitosan

scholarly journals Physicochemical and Antifungal Properties of Clotrimazole in Combination with High-Molecular Weight Chitosan as a Multifunctional Excipient

Marine Drugs ◽  
2020 ◽  
Vol 18 (12) ◽  
pp. 591
Author(s):  
Bożena Grimling ◽  
Bożena Karolewicz ◽  
Urszula Nawrot ◽  
Katarzyna Włodarczyk ◽  
Agata Górniak
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Weight Ratio ◽  
Scanning Calorimetry ◽  
Minimal Inhibitory Concentrations ◽  
Dissolution Tests ◽  
Effective Combination ◽  
The Impact ◽  
High Molecular Weight Chitosan

Chitosans represent a group of multifunctional drug excipients. Here, we aimed to estimate the impact of high-molecular weight chitosan on the physicochemical properties of clotrimazole–chitosan solid mixtures (CL–CH), prepared by grinding and kneading methods. We characterised these formulas by infrared spectroscopy, differential scanning calorimetry, and powder X-ray diffractometry, and performed in vitro clotrimazole dissolution tests. Additionally, we examined the antifungal activity of clotrimazole–chitosan mixtures against clinical Candida isolates under neutral and acid conditions. The synergistic effect of clotrimazole and chitosan S combinations was observed in tests carried out at pH 4 on Candida glabrata strains. The inhibition of C. glabrata growth reached at least 90%, regardless of the drug/excipient weight ratio, and even at half of the minimal inhibitory concentrations of clotrimazole. Our results demonstrate that clotrimazole and high-molecular weight chitosan could be an effective combination in a topical antifungal formulation, as chitosan acts synergistically with clotrimazole against non-albicans candida strains.

scholarly journals Catalytic Degradation of Chitosan by Supported Heteropoly Acids in Heterogeneous Systems

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1078
Author(s):  
Hang Zhang ◽  
Zhipeng Ma ◽  
Yunpeng Min ◽  
Huiru Wang ◽  
Ru Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Molecular Weight ◽  
Catalytic Activity ◽  
Activated Carbon ◽  
Reaction Time ◽  
High Molecular Weight ◽  
Reaction Temperature ◽  
Water Soluble ◽  
High Catalytic Activity ◽  
High Molecular Weight Chitosan

Several kinds of composite materials with phosphotungstic acid (PTA) as the catalyst were prepared with activated carbon as support, and their structures were characterized. According to the Box–Behnken central combination principle, the mathematical model of the heterogeneous system is established. Based on the single-factor experiments, the reaction temperature, the reaction time, the amount of hydrogen peroxide and the loading capacity of PTA were selected as the influencing factors to study the catalyzed oxidation of hydrogen peroxide and degradation of high molecular weight chitosan. The results of IR showed that the catalyst had a Keggin structure. The results of the mercury intrusion test showed that the pore structure of the supported PTA catalyst did not change significantly, and with the increase of PTA loading, the porosity and pore volume decreased regularly, which indicated that PTA molecules had been absorbed and filled into the pore of activated carbon. The results of Response Surface Design (RSD) showed that the optimum reaction conditions of supported PTA catalysts for oxidative degradation of high molecular weight chitosan by hydrogen peroxide were as follows: reaction temperature was 70 ℃, reaction time was 3.0 h, the ratio of hydrogen peroxide to chitosan was 2.4 and the catalyst loading was 30%. Under these conditions, the yield and molecular weight of water-soluble chitosan were 62.8% and 1290 Da, respectively. The supported PTA catalyst maintained high catalytic activity after three reuses, which indicated that the supported PTA catalyst had excellent catalytic activity and stable performance compared with the PTA catalyst.

scholarly journals Ferritin Blocks Inhibitory Effects of Two-Chain High Molecular Weight Kininogen (HKa) on Adhesion and Survival Signaling in Endothelial Cells

PLoS ONE ◽  
2012 ◽  
Vol 7 (7) ◽  
pp. e40030 ◽  
Author(s):  
Lia Tesfay ◽  
Annissa J. Huhn ◽  
Heather Hatcher ◽  
Frank M. Torti ◽  
Suzy V. Torti
Keyword(s):  
Molecular Weight ◽  
Endothelial Cells ◽  
High Molecular Weight ◽  
High Molecular Weight Kininogen ◽  
Inhibitory Effects ◽  
Survival Signaling

Resveratrol encapsulation in high molecular weight chitosan-based nanogels for applications in ocular treatments: Impact on human ARPE-19 culture cells

2020 ◽  
Vol 165 ◽  
pp. 804-821 ◽  
Author(s):  
Florencia Solana Buosi ◽  
Agustina Alaimo ◽  
Mariana Carolina Di Santo ◽  
Fernanda Elías ◽  
Guadalupe García Liñares ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Culture Cells ◽  
High Molecular Weight Chitosan

Synergistic Antimicrobial Activity of Chitosan Hydrolysates derived fromthe Hydrolysis of High Molecular Weight Chitosan using Immobilized Enzyme

2019 ◽  
Vol 24 (4) ◽  
pp. 219-226
Author(s):  
Yong Hyun Lee ◽  
Seung Hoon Yum ◽  
So Yeon Park ◽  
Hee Soo Hwang ◽  
You Jin Hwang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Antimicrobial Activity ◽  
High Molecular Weight ◽  
Immobilized Enzyme ◽  
Hydrolysis Of ◽  
High Molecular Weight Chitosan

scholarly journals Inhibitory Effects of Plant Polyphenoloxidase on Colonization Factors of Streptococcus sobrinus6715

2000 ◽  
Vol 44 (9) ◽  
pp. 2578-2580 ◽  
Author(s):  
M. M. Cowan ◽  
E. A. Horst ◽  
S. Luengpailin ◽  
R. J. Doyle
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Streptococcus Sobrinus ◽  
Inhibitory Effects ◽  
Tyrosine Residues ◽  
Link Type ◽  
Colonization Factors ◽  
Dietary Components ◽  
Binding Lectin

ABSTRACT Exogenously added polyphenoloxidase (EC 1.14.18.1), an enzyme which oxidizes tyrosine residues and is commonly found in many dietary components, abolished the aggregation of Streptococcus sobrinus 6715 by high-molecular-weight dextran. The enzyme decreased glucan-binding lectin and/or glucosyltransferase I activities.

scholarly journals Extensively deacetylated high molecular weight chitosan from the multistep ultrasound-assisted deacetylation of beta-chitin

2016 ◽  
Vol 32 ◽  
pp. 79-85 ◽  
Author(s):  
Anderson Fiamingo ◽  
Jorge Augusto de Moura Delezuk ◽  
Stéphane Trombotto ◽  
Laurent David ◽  
Sergio Paulo Campana-Filho
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Ultrasound Assisted ◽  
High Molecular Weight Chitosan
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