超声辅助提取、分析及山竹果皮多糖的抗氧化活性

Key Laboratory of Carbohydrate Science and Engineering, Chongqing Normal University, Chongqing 401331, China.

Ultrason Sonochem. 2023 Jul;97:106474. doi: 10.1016/j.ultsonch.2023.106474. Epub 2023 Jun 9.

According to response surface methodology (RSM), the extraction conditions of ultrasound-assisted extraction of polysaccharide from the rinds of Garcinia mangostana L. (GMRP) were optimized and determined. The optimal conditions obtained through optimization were: the liquid to material ratio was 40 mL/g, ultrasonic power was 288 W and extraction time was 65 min. The average extraction rate of GMRP was 14.73%. Ac - GMRP was obtained by acetylation of GMRP, and the antioxidant activities of the two polysaccharides were compared in vitro. The results indicated that the antioxidant capacity of polysaccharide obtained after acetylation was significantly improved compared with that of GMRP. In conclusion, chemical modification of polysaccharide is an effective measure to improve its properties to a certain extent. Meanwhile, it implies that GMRP has great research value and potential.

根据响应面法（RSM），优化并确定了从 Garcinia mangostana L.（GMRP）果皮中超声辅助提取多糖的提取条件。通过优化得到的最佳条件为：液料比为 40mL/g，超声功率为 288W，提取时间为 65min。GMRP 的平均提取率为 14.73%。通过 GMRP 的乙酰化得到 Ac-GMRP，并比较了两种多糖的体外抗氧化活性。结果表明，乙酰化后多糖的抗氧化能力比 GMRP 有显著提高。综上所述，多糖的化学修饰在一定程度上是提高其性能的有效措施。同时，这表明 GMRP 具有很大的研究价值和潜力。