超声辅助提取银杏叶多糖及其性质。
Ultrasound-assisted extraction and properties of polysaccharide from Ginkgo biloba leaves.
机构信息
Key Laboratory of Carbohydrate Science and Engineering, Chongqing Key Laboratory of Inorganic Functional Materials, Chongqing Normal University, Chongqing 401331, China.
Key Laboratory of Carbohydrate Science and Engineering, Chongqing Key Laboratory of Inorganic Functional Materials, Chongqing Normal University, Chongqing 401331, China.
出版信息
Ultrason Sonochem. 2023 Feb;93:106295. doi: 10.1016/j.ultsonch.2023.106295. Epub 2023 Jan 10.
Response surface methodology (RSM) was used to optimize the ultrasound-assisted extraction conditions of Ginkgo biloba leaves polysaccharide (GBLP). The optimum extraction conditions for the ultrasound-assisted extraction of GBLP were obtained as liquid to material ratio of 30 mL/g, ultrasonic power of 340 W, and extraction time of 50 min. Under these conditions, the yield of GBLP was 5.37 %. Two chemically modified polysaccharides, CM-GBLP and Ac-GBLP, were obtained by carboxymethylation and acetylation of GBLP. The physicochemical properties of these three polysaccharides were comparatively studied and their in vitro antioxidant activities were evaluated comprehensively. The results showed that the solubility of the chemically modified polysaccharides was significantly enhanced and the in vitro antioxidant activity was somewhat improved. This suggests that carboxymethylation and acetylation are effective methods to enhance polysaccharide properties, but the results exhibited some uncontrollability. At the same time, GBLP has also shown high potential for research and application.
响应面法（RSM）用于优化银杏叶多糖（GBLP）的超声辅助提取条件。超声辅助提取 GBLP 的最佳提取条件为液料比 30 mL/g、超声功率 340 W 和提取时间 50 min。在此条件下，GBLP 的产率为 5.37%。通过对 GBLP 的羧甲基化和乙酰化，得到两种化学修饰多糖，CM-GBLP 和 Ac-GBLP。对这三种多糖的理化性质进行了比较研究，并对其体外抗氧化活性进行了综合评价。结果表明，化学修饰多糖的溶解度显著提高，体外抗氧化活性略有提高。这表明羧甲基化和乙酰化是增强多糖性质的有效方法，但结果表现出一定的不可控性。同时，GBLP 也具有很高的研究和应用潜力。
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