Moisture retention and antibacterial activity of modified chitosan by hydrogen peroxide

Qin, Caiqin; Du, Yong; Xiao, Ling; Liu, Yi; Yu, Huaguang

doi:10.1002/app.11080

Cited by 27 publications

(17 citation statements)

References 20 publications

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“…Moisturizing products increase water content in skin and help keep it soft and smooth. For chitosan hydrogels, the moisturizing properties depend on the molecular weight and deacetylation degree of chitosan [59].…”

Section: Chitosan In Cosmeticsmentioning

confidence: 99%

Biopolymers for hydrogels in cosmetics: review

Mitura

Sionkowska

Jaiswal³

2020

J Mater Sci: Mater Med

189

114

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Hydrogels are cross-linked networks of macromolecular compounds characterized by high water absorption capacity. Such materials find a wide range of biomedical applications. Several polymeric hydrogels can also be used in cosmetics. Herein, the structure, properties and selected applications of hydrogels in cosmetics are discussed in general. Detailed examples from scientific literature are also shown. In this review paper, most common biopolymers used in cosmetics are presented in detail together with issues related to skin treatment and hair conditioning. Hydrogels based on collagen, chitosan, hyaluronic acid, and other polysaccharides have been characterized. New trends in the preparation of hydrogels based on biopolymer blends as well as bigels have been shown. Moreover, biopolymer hydrogels employment in encapsulation has been mentioned.

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Section: Chitosan In Cosmeticsmentioning

confidence: 99%

Biopolymers for hydrogels in cosmetics: review

Mitura

Sionkowska

Jaiswal³

2020

J Mater Sci: Mater Med

189

114

View full text Add to dashboard Cite

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“…However, when studying these nanocomposites, a possible decrease in the hydroxy radical concentration due to intense chitosan destruction by hydrogen peroxide via the radical mechanism was ignored. 8, 9 To exclude this effect, oligosaccharide of chitosan was used instead of the high molecular weight chitosan itself to stabilize the nanoparticles. Our preliminary experiments showed that the oligomer used underwent no changes under the experimental conditions.…”

mentioning

confidence: 99%

Antioxidant properties of gold nanoparticles studied by ESR spectroscopy

et al. 2008

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The Au containing nanocomposites were synthesized by UV irradiation followed by the thermal treatment of chitosan oligomer solutions doped by HAuCl 4 . The size of the formed gold nanoparti cles depends on the concentration of the dopant, which is proved by UV-Vis absorption spectrosco py and small angle X ray scattering (SAXS). The antioxidant activity of the gold nanoparticles with respect to hydroxy radicals significantly depends on the specific surface of the particles, which was found using the secondary radical spin trapping technique. The change in the • OH radical concen tration was monitored by the intensity of the ESR signal of the adduct of the spin trap (α phenyl N tert butylnitrone) with the Me • radicals formed in the reaction of • OH with DMSO.It is known 1 that gold nanoparticles exhibit high cata lytic activity in some oxidation reactions, such as low temperature CO oxidation, whereas gold as a compact metal is chemically inactive because of both the size effect and the character of interaction of the metal nano particles and support accompanied by the charge transfer between them. A change in the magnetic properties of metals in the nanosized state is of special interest. Previ ously 2 the superparamagnetic behavior of the palladium and gold nanoparticles incorporated into the polymer matrix of polyvinylpyrrolidone has been revealed, al though palladium is weakly paramagnetic and gold in the block state is a typical diamagnetic. Ferromagnetism (ferromagnetic spin polarization) of the gold nanoparticles was experimentally confirmed. 3 Similar changes in the pro perties of the metal on going to the nanosized state can be due to the dependence of the electronic structure on the particle size. The theoretical substantiation of the specif ic features of the electron states of the Au nanoparticles and the calculations proving the dependences of the Fermi energy on the particle size have been presented earlier. 4,5The interaction of the gold nanoparticles and the Au 3 and Au 13 clusters with organic radicals in alkanethiol hybrid systems was theoretically simulated. 4 Some pub lications concern the antioxidation effect of the gold nano particles stabilized by solutions of high molecular weight chitosan 6 and dendrimers 7 with respect to hydroxy radi cals. However, when studying these nanocomposites, a possible decrease in the hydroxy radical concentration due to intense chitosan destruction by hydrogen peroxide via the radical mechanism was ignored. 8,9 To exclude this effect, oligosaccharide of chitosan was used instead of the high molecular weight chitosan itself to stabilize the nanoparticles. Our preliminary experiments showed that the oligomer used underwent no changes under the experimental conditions.The purpose of this work is the ESR spectral study of the antioxidant properties of the gold nanoparticles in oligochitosan solutions depending on the particle size. ExperimentalThe gold nanocomposites were obtained in aqueous solutions of the chitosan oligomer doped by chloroauric acid (HAuCl 4 ) w...

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“…As the M w was reduced the moisture- retention capacity first increased and then declined with a maximum moisture-retention capacity when the chitosan sample of 0.45 × 10 4 kDa was used. Moreover, the moisture retention and moisture-absorption increased with chitosan DD [ 84 ]. From all tested samples, the best sample was a chitosan of 0.45 × 10 4 kDa and a DA of 0.1…”

Section: Chitin Chitosan and Their Derivatives In Cosmetics And Cmentioning

confidence: 99%

Cosmetics and Cosmeceutical Applications of Chitin, Chitosan and Their Derivatives

et al. 2018

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Marine resources are well recognized for their biologically active substances with great potential applications in the cosmeceutical industry. Among the different compounds with a marine origin, chitin and its deacetylated derivative—chitosan—are of great interest to the cosmeceutical industry due to their unique biological and technological properties. In this review, we explore the different functional roles of chitosan as a skin care and hair care ingredient, as an oral hygiene agent and as a carrier for active compounds, among others. The importance of the physico-chemical properties of the polymer in its use in cosmetics are particularly highlighted. Moreover, we analyse the market perspectives of this polymer and the presence in the market of chitosan-based products.

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Moisture retention and antibacterial activity of modified chitosan by hydrogen peroxide

Cited by 27 publications

References 20 publications

Biopolymers for hydrogels in cosmetics: review

Biopolymers for hydrogels in cosmetics: review

Antioxidant properties of gold nanoparticles studied by ESR spectroscopy

Cosmetics and Cosmeceutical Applications of Chitin, Chitosan and Their Derivatives

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