Antioxidant and Moisturizing Properties of Carboxymethyl Chitosan with Different Molecular Weights

Author:

Chaiwong Nareekan,Leelapornpisid Pimporn,Jantanasakulwong Kittisak,Rachtanapun PornchaiORCID,Seesuriyachan Phisit,Sakdatorn Vinyoo,Leksawasdi Noppol,Phimolsiripol YuthanaORCID

Abstract

This research aimed to synthesize carboxymethyl chitosan (CMCH) from different molecular weights of chitosan including low MW (L, 50–190 kDa), medium MW (M, 210–300 kDa) and high MW (H, 310–375 kDa) on the antioxidant and moisturizing properties. The L-CMCH, M-CMCH and H-CMCH improved the water solubility by about 96%, 90% and 89%, respectively when compared to native chitosan. Higher MW resulted in more viscous of CMCH. For antioxidant properties, IC50 values of DPPH and ABTS radical scavenging activity for L-CMCH were 1.70 and 1.37 mg/mL, respectively. The L-CMCH had higher antioxidant properties by DPPH and ABTS radical scavenging assay and FRAP. The moisturizing properties on pig skin using a Corneometer® showed that 0.5% H-CMCH significantly presented (p ≤ 0.05) greater moisturizing effect than that of untreated-skin, distilled water, propylene glycol and pure chitosan from three molecular weights.

Funder

Chiang Mai University

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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