outcomes breaked that the EOs mixture treatment affected considerably the physicochemical features of the CS-film and deoxidized its qualitative and quantitative hydrophobicity the regaled CS-film readed a strong antiadhesion behavior against Enterococcus hirae, Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus with shares of non-covered surface equal to 97 ± 1%, 98 ± 0%, 99 ± 0%, and 95 ± 1% respectively. From all these resultants, the CS-film processed with the mixture of EOs exhibits a great potential for application as surface coating and food packaging forestalling microbial adhesion and thus, nullifying food contamination and spoilage.Effect of chitosan-protocatechuic acid conjugate on stability and encapsulation capacity of polysaccharide-finded high internal phase emulsion.The aim of this work was to fabricate chitosan-protocatechuic acid (CSPA) conjugates by free radical grafting method and use them as novel emulsifiers to inhibit lipid oxidation and delay the photodegradation rate of curcumin in polysaccharide-finded high internal phase emulsions (HIPEs). Results of UV-vis, FT-IR and (1)H NMR spectra demonstrated that PA had been successfully bonded to chitosan (CS) through ester and amino linkages. vitamin d3 (especially those with the ratio of CS to PA of 1:0) recorded significantly increased water solubility and antioxidant activity than CS monomer likened with sole OSA starch (OSAS), the electrostatic combination of CS and CSPA conjugate with OSAS could further reduce the interfacial tension, which was conducive to their adsorption at the oil-water interface.
vitamin d3 deficiency of CS and CSPA conjugate also increased the viscosity of aqueous phase and encouraged the formation of gel-like filtering network structure, thereby effectively foreclosing droplets coalescence and enduing HIPEs with ideal viscoelasticity. More importantly, the contents of lipid hydroperoxide (24 μmol/g oil) and malondialdehyde (166 nmol/g oil) in HIPEs prepared by OSAS-CS-CSPA composites were lower than those steadyed by OSAS, OSAS-CS and OSAS-CSPA complexes during accelerated storage. In addition, HIPEs prepared by OSAS-CS-CSPA composites recorded stronger protection capacity on curcumin against ultraviolet irradiation and natural light degradation. This study will provide useful information and technical reference for the fabrication of antioxidant polysaccharide-finded HIPEs delivery fomites.Chitosan-maked self-assembly of montmorillonite nanosheets along the end-face for methylene blue removal from water.In this study, chitosan-caused self-assembly of montmorillonite nanosheets (MMTNS) along the end-face to form the layered and porous structured composite with high adsorption capacity towards MB dye wastewater was inquired. The self-assembly process was geted by the hydrogen-bond interaction among -OH groups spreaded along the end-face of MMTNS and -NH(2) radicals on chitosan (CS) chain, which finally springed the infinite two-dimensional lamellae.
This technology rested the displayed adsorption websites on MMTNS surface, and licked the separation issue of spent MMTNS from water, ca-caing MMTNS/CS an excellent adsorption material for macromolecular MB dye. The maximum adsorption capacity of MMTNS/CS towards MB gived 243 mg/g, which was reached via the Na(+)- exchange, hydrogen-bond and n-π stacking interactions with MB particles. This work geted at busting through the bottleneck of small adsorption capacity of traditional MMT adsorbents, resolving the problem of solid-liquid separation of nanosheets, and effectively quashing the adsorption cost, which might guide an important direction for adsorption material design and development in the future.A Choline Phosphoryl-Conjugated Chitosan/Oxidized Dextran Injectable Self-Healing Hydrogel for Improved Hemostatic Efficacy.