Results 61 to 70 of about 65,504 (254)

Preparation of Some Eco-friendly Corrosion Inhibitors Having Antibacterial Activity from Sea Food Waste [PDF]

open access: yes, 2012
Chitosan is one of the important biopolymers and it is extracted from exoskeletons of crustaceans in sea food waste. It is a suitable eco-friendly carbon steel corrosion inhibitor in acid media; the deacetylation degree of prepared chitosan is more than ...
Hassan A. H. Shehata   +4 more
core   +1 more source

Synthesis, Characterization and Biological Activities of Biopolymeric Schiff Bases Prepared with Chitosan and Salicylaldehydes and Their Pd(II) and Pt(II) Complexes

open access: yesMolecules, 2017
In an attempt to enhance chitosan biological activities, biopolymeric Schiff bases of chitosan and different salicylaldehydes and their palladium(II) and platinum(II) complexes were synthesized and tested.
Hellen Franciane Gonçalves Barbosa   +6 more
doaj   +1 more source

Research Progress on Application of Chitosan and Its Derivatives in Fruit Wine

open access: yesShipin gongye ke-ji, 2022
Chitosan, a natural and safe polymer, has antibacterial, metal chelating, clarifying and antioxidant effects in the fruit wine making industries. However, the activity strength and action mechanism of chitosan in the brewing process is still unclear.
Tiwei DIAO   +5 more
doaj   +1 more source

Modification of Chitosan for the Generation of Functional Derivatives [PDF]

open access: yesApplied Sciences, 2019
Today, chitosan (CS) is probably considered as a biofunctional polysaccharide with the most notable growth and potential for applications in various fields. The progress in chitin chemistry and the need to replace additives and non-natural polymers with functional natural-based polymers have opened many new opportunities for CS and its derivatives ...
Clément Brasselet   +10 more
openaire   +4 more sources

Chitosan and its derivatives for application in mucoadhesive drug delivery systems [PDF]

open access: yes, 2018
Mucoadhesive drug delivery systems are desirable as they can increase the residence time of drugs at the site of absorption/action, provide sustained drug release and minimize the degradation of drugs in various body sites.
Bernkop-Schnürch   +4 more
core   +2 more sources

New modified chitosan composites and nanocomposites for different applications

open access: yesJournal of Scientific Research in Science, 2021
The present work focuses on the preparation of chitosan composite and chitosan nanocomposite derivatives for different applications. Chitosan was modified with bentonite or nano-bentonite to give chitosan composite and nanocomposite derivatives hydrogels
Taghreed H. Abdalla   +4 more
doaj   +1 more source

Novel highly-soluble peptide-chitosan polymers: Chemical synthesis and spectral characterization [PDF]

open access: yes, 2006
Novel water-soluble polymers, N-(gamma-propanoyl-valin)-chitosan and N-(gamma-propanoyi-aspartic acid)-chitosan, were synthesized by reaction of low molecular weight chitosan with N-alpha-(3-bromopropanoyl)-valine and N-alpha-(3-bromopropanoyl)-aspartic ...
Batista, MKS   +3 more
core   +1 more source

Chitosan and its derivatives as vehicles for drug delivery

open access: yesDrug Delivery, 2017
Chitosan and its derivatives as vehicles for drug delivery can achieve the purpose of sustained release and controlled release for drugs, improve the stability of drugs, and reduce adverse drug reactions. So, the bioavailability of drugs can be enhanced.
Gangliang Huang, Yang Liu, Ling Chen
doaj   +1 more source

Applications and interest of chitin, chitosan and their derivatives in enology

open access: yesOENO One, 2005
This review treats of the possible use interest of chitin, chitosan and derivatives in enology. Chitosan and chitin are polysaccharide polymers containing more than 5 000 glucosamine and acetylglucosamine units, respectively, and their molecular weights ...
Aurélie Bornet, Pierre-Louis Teissedre
doaj   +1 more source

Sulfone-modified chitosan as selective adsorbent for the extraction of toxic Hg(II) metal ions

open access: yesAdsorption Science & Technology, 2019
In this study, a new category of sulfone-modified chitosan derivatives as surface-selective adsorbents for the extraction of toxic Hg(II) metal has been synthesized in good yield.
Youssef O Al-Ghamdi   +4 more
doaj   +1 more source

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