本文已被：浏览 2979次 下载 1066次
投稿时间：2016-05-30
投稿时间：2016-05-30
中文摘要: 以白背毛木耳为原料，利用传统水提法提取白背毛木耳多糖（polysaccharides from Auricularia polytricha，APPs）， 分别对传统热风干燥多糖（APPs-H）、真空干燥多糖（APPs-V）和冷冻干燥多糖（APPs-F）的化学组成和抗氧化活性进行 研究。结果表明，白背毛木耳多糖为含有少量的蛋白质的酸性多糖，不同干燥方法将会影响其单糖组成和糖醛酸含量。 APPs-H，APPs-V 和 APPs-F 具有较强的清除 DPPH 自由基、羟基自由基、超氧阴离子自由基和亚硝基自由基的能力和 还原力，在一定浓度范围内，多糖与抗氧化活性及还原能力之间呈正相关关系，干燥方法对白背毛木耳多糖抗氧化活性 造成不同影响，其中 APPs-F 抗氧化活性最强，其次是 APPs-V 和 APPs-H，冷冻干燥是制备 APPs 适宜的干燥方法。
Abstract:Auricularia polytricha was used as raw materials. Polysaccharides from Auricularia polytricha （APPs） were extracted using conventional water extraction. APPs-H， APPs-V and APPs-F were obtained with traditional hot-air drying， vacuum drying and freeze drying， respectively.Chemical composition and antioxidant activities of APPs -H， APPs -V and APPs -F were investigated. The results showed that APPs were acidic polysaccharides containing a small amount of protein.Different drying methods could affect the monosaccharide composition and uronic acid content. APPs-H， APPs-V and APPs-F had a stronger scavenging ability of DPPH radical， hydroxyl radical， superoxide anion free radical and nitroso free radical and reducing power.In a certain concentration range， APPs were positively correlated with the antioxidant activity and reducing capacity. Drying methods had different effects on the antioxidant activity of APPs. APPs-F had highest antioxidant activities ， followed by APPs-V and APPs-H. Freeze drying was the best drying method for preparation of APPs.
文章编号：201712006 中图分类号： 文献标志码：A
基金项目:常熟理工学院 2015 届本科毕业设计(论文)重点资助团队课题
| Author Name | Affiliation |
| QIU Meng-ge， HUA Li-jun， TANG Yi， YIN Jie， LI Jia-qi， CHEN Yi-yong* | School of Biology and Food Engineering， Changshu Institute of Technology， Changshu 215500， Jiangsu， China |
引用文本：
津ICP备20000603号-1