Physicochemical Characterization and Biological Properties of Polysaccharides from Alpiniae oxyphyllae Fructus

文献类型： 外文期刊

第一作者： Wang, Risi

作者： Wang, Risi;Shuai, Xixiang;Wang, Risi;Ruan, Xinmei;Chen, Jun;Deng, Lizhen;Shuai, Xixiang;Liang, Ruihong;Dai, Taotao;Zhou, Wei

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关键词： polysaccharides; Alpiniae oxyphyllae fructus; extraction methods; physicochemical properties; antioxidant activities; alpha-amylase inhibition

期刊名称：POLYMERS （ 影响因子：4.7； 五年影响因子：4.9 ）

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年卷期： 2024 年 16 卷 12 期

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收录情况： SCI

摘要： Polysaccharides (AOPs) were extracted from Alpiniae oxyphyllae fructus using three distinct methods: hot water (AOP-HW), hydrochloric acid (AOP-AC), and NaOH/NaBH4 (AOP-AL). This study systematically investigated and compared the physicochemical properties, structural characteristics, antioxidant activities, and alpha-amylase inhibitory activities of the extracted polysaccharides. Among the three AOPs, AOP-AC exhibited the highest yield (13.76%) and neutral sugar content (80.57%), but had the lowest molecular weight (121.28 kDa). Conversely, AOP-HW had the lowest yield (4.54%) but the highest molecular weight (385.42 kDa). AOP-AL was predominantly composed of arabinose (28.42 mol%), galacturonic acid (17.61 mol%), and galactose (17.09 mol%), while glucose was the major sugar in both AOP-HW (52.31 mol%) and AOP-AC (94.77 mol%). Functionally, AOP-AL demonstrated superior scavenging activities against DPPH, hydroxyl, and ABTS radicals, whereas AOP-AC exhibited the strongest inhibitory effect on alpha-amylase. These findings indicate that the extraction solvent significantly influences the physicochemical and biological properties of AOPs, thus guiding the selection of appropriate extraction methods for specific applications. The results of this study have broad implications for industries seeking natural polysaccharides with antioxidant and enzymatic inhibitory properties.

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