火龙果果皮多酚及其抗氧化活性研究  

Study on Polyphenols and Antioxidant Activity of Hylocereus undulates Britt Peel

作　　者：孙卉 康蒙 陈玉凤 禤其晴 SUN Hui;KANG Meng;CHEN Yufeng;XUAN Qiqing(College of Leisure and Health,Guilin Tourism University,Guilin 541006,China)

机构地区：[1]桂林旅游学院休闲与健康学院,广西桂林541006

出　　处：《食品安全导刊》2022年第31期124-129,共6页China Food Safety Magazine

基　　金：国家级大学生创新创业训练计划立项项目(202111837025、202011837007);广西高校中青年教师基础能力提升项目(2021KY0830);桂林旅游学院校级科研重点项目(2021A03);桂林旅游学院教育教学研究改革项目(2020XJJG019)。

摘　　要：目的:评价6种火龙果果皮的多酚含量及其抗氧化活性。方法:采用超声辅助有机溶剂提取法提取多酚,测定其总酚、黄酮、原花青素含量,通过1,1-二苯基-2-三硝基苯肼自由基清除能力、2,2’-联氮-二(3-乙基-苯并噻唑啉-6-磺酸)二铵盐自由基清除能力和铁离子还原能力来测定抗氧化能力。结果:6种火龙果果皮提取液中越南1号的总酚、原花青素含量最高,分别为(181.7±4.9) μg·mL、(124.7±3.6) μg·mL,而黔白1号总黄酮含量最高,为(222.1±12.3) μg·mL。抗氧化实验中,越南1号抗氧化活性最强,DPPH及ABTS清除率分别为97.3%和69.5%;FRAP为0.859。结论:白肉火龙果果皮中多酚类化合物的含量及抗氧化能力均高于红肉火龙果果皮;越南1号火龙果果皮具有更高的多酚类化合物和抗氧化活性。Objective:To evaluate the contents of polyphenols and antioxidant activities in six Pitaya peels.Method:Polyphenols were extracted by ultrasonic assisted organic solvent extraction,and the contents of total phenols,flavonoids and proanthocyanidins were determined.The antioxidant capacity was determined by 1,1-diphenyl-2-picrylhydrazyl free radical scavenging capacity,2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) ammonium salt free radical scavenging capacity and ferric reducing ability of plasma.Result:Among the 6 kinds of Hylocereus undulates Britt peel extracts,Vietnam No.1 had the highest content of total phenol and procyanidins,which were (181.7±4.9) μg·mL,(124.7±3.6) μg·mL,while Qianbai No.1 had the highest total flavone content (222.1±12.3) μg·mL.In the anti-oxidation experiment,Vietnam No.1 had the strongest anti-oxidation activity,and the scavenging rates of DPPH and ABTS were 97.3% and 69.5%,respectively;FRAP was 0.859.Conclusion:The content of polyphenols and antioxidant capacity in white Hylocereus undulates Britt peel are higher than that in red Hylocereus undulates Britt peel.In comparison,Vietnam No.1 Hylocereus undulates Britt peel has higher polyphenols and antioxidant activity.

关 键 词：火龙果果皮 多酚 黄酮 原花青素 抗氧化活性 

分 类 号：TS209[轻工技术与工程—食品科学]