桃金娘粗多糖提取及抗氧化活性研究  

Study on Extraction of Crude Polysaccharides and Antioxidant Activity of Rhodomyrtus tomentosa

作　　者：赵广河[1,2] 陈振林[1] 

机构地区：[1]贺州学院化学与生物工程学院,广西贺州542800 [2]华中农业大学食品科技学院,湖北武汉430070

出　　处：《食品研究与开发》2016年第7期78-80,共3页Food Research and Development

基　　金：广西高校特色专业及课程一体化建设项目(GXTSZY274);贺州学院科研项目(2013ZXZK06)

摘　　要：以桃金娘为原料,通过微波辅助柠檬酸盐缓冲液浸提法探讨桃金娘粗多糖的提取工艺,并研究其抗氧化活性。结果表明:微波辅助柠檬酸盐缓冲液提取法的最佳提取条件为料液比1∶25(g/mL)、功率中火、时间4 min。与热水提取法、柠檬酸盐缓冲液提取法相比,微波辅助柠檬酸盐缓冲液提取法明显提高了桃金娘粗多糖的得率,效果较好。桃金娘粗多糖具有一定的体外抗氧化作用,但弱于V_C。本研究结果可为桃金娘多糖的开发利用提供参考。The extraction process and antioxidant activity of crude polysaccharides from Rhodomyrtus tomentosa was studied in this paper. The results showed that the optimal conditions were as follows： ratio of solid to liquid 1 ∶ 25（ g/m L）, middle power, extraction time 4 minutes. Compared with hot water extraction and citrate buffer extraction, microwave-assisted citrate buffer extraction was proved better. Crude polysaccharides from Rhodomyrtus tomentosa had some antioxidant activity in viro,but it was poorer than Vc. The results of the paper could provide a scientic basis for the utilization of Rhodomyrtus tomentosa.

关 键 词：桃金娘 粗多糖 提取 抗氧化 

分 类 号：TQ281[化学工程—有机化工]