Degradation Polysaccharides from Benincasa hispida var. chieh-qua How: Unveiling Bioactive Properties of Degraded Compounds.

Authors :: Sheng XY
Zhang HJ
Chen XJ
Wang KW
Source :: Chemistry & biodiversity [Chem Biodivers] 2024 Oct 17, pp. e202402204. Date of Electronic Publication: 2024 Oct 17.
Publication Year :: 2024
Publisher :: Ahead of Print
Abstract: This study reported an effective method for the degradation of Chieh-qua (Benincasa hispida var. Chieh-qua How) polysaccharides (BHCP) by a hydrogen peroxide-ascorbic acid oxidation (H <subscript>2</subscript> O <subscript>2</subscript> -V <subscript>C</subscript> ) system. The degradation conditions were optimized using a Box-Behnken response surface design as concentration of H <subscript>2</subscript> O <subscript>2</subscript> -V <subscript>C</subscript> 19.5 mM, degradation temperature 46.4 °C and degradation time 1.0 h. The average molecular weight was decreased and total sugar content was raised of the degraded polysaccharide (DBHCP). Two refined degraded polysaccharides (DBHCP-1, DBHCP-2) were purified and prepared, and their structures were analyzed by chemical and spectral analysis. The in vitro experiments showed that degraded polysaccharides (DBHCP and DBHCP-1) have better antioxidant and anti-tyrosinase activity than natural polysaccharide BHCP. These findings support the potential application of Chieh-qua polysaccharides in the food and medical industries.<br /> (© 2024 Wiley-VHCA AG, Zurich, Switzerland.)

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