藕节对莲藕淀粉多酚含量的影响  

Effect of Lotus Rhizome Node on the Content of Polyphenols in Lotus Rhizome Starch

作　　者：王杰 刘延照 李洁[1,2,3] 严守雷 胡中立[4] WANG Jie;LIU Yanzhao;LI Jie;YAN Shoulei;HU Zhongli(College of Food Science and Technology,Huazhong Agricultural University,Wuhan 430070,Hubei,China;Hubei Engineering Technology Research Center of Aquatic Vegetable Preservation and Processing,Wuhan 430070,Hubei,China;Engineering Research Center for Green Development of Bulk Aquatic Bio-industry of Yangtze River Economic Belt,Ministry of Education,Wuhan 430070,Hubei,China;College of Life Sciences,Wuhan University,Wuhan 430070,Hubei,China)

机构地区：[1]华中农业大学食品科学技术学院,湖北武汉430070 [2]湖北省水生蔬菜保鲜加工工程技术研究中心,湖北武汉430070 [3]长江经济带大宗水生生物产业绿色发展教育部工程研究中心,湖北武汉430070 [4]武汉大学生命科学学院,湖北武汉430070

出　　处：《食品研究与开发》2023年第19期54-60,共7页Food Research and Development

基　　金：湖北省重点研发计划项目(2021BBA093)。

摘　　要：为研究藕节对莲藕提取淀粉多酚含量的影响,通过高效液相色谱-串联质谱法与高效液相色谱法分析藕节汁的酚类物质及含量,通过乙醇保护的碱提法分析莲藕淀粉多酚的组成。结果显示:通过乙醇保护的碱提法可以有效提取出淀粉中的多酚,多酚组分主要为没食子儿茶素以及儿茶素。藕节汁中没食子儿茶素的含量为565.14μg/g(干重),明显高于去皮藕段和藕皮,在制得莲藕淀粉时藕节原料可提高莲藕淀粉的多酚含量。The polyphenols in lotus rhizome juice were analyzed by high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS)and high performance liquid chromatography(HPLC).The compos-ition of polyphenols in lotus rhizome starch was analyzed by alkali extraction with ethanol protection.The results showed that the polyphenols in starch could be effectively extracted by alkali extraction with ethanol protection.The polyphenols were dominated by gallocatechin and catechin.The content of gallocatechin in lotus rhizome juice was 565.14μg/g(dry weight),which was significantly higher than that in peeled lotus rhizome segment and lotus rhizome skin.The raw material of lotus rhizome node could increase the polyphenol content of lotus rhizome starch.In conclusion,the alkali extraction with ethanol protection can be employed to extract polyphenols from starch.

关 键 词：莲藕淀粉 没食子儿茶素 儿茶素 高效液相色谱 藕节 

分 类 号：TS231[轻工技术与工程—粮食、油脂及植物蛋白工程]