摘要
以甘薯叶为研究对象,分别对叶面与土壤进行富硒处理,通过分析甘薯叶中硒含量及甘薯叶蛋白的抗氧化活性的变化,研究不同富硒方式对甘薯叶蛋白抗氧化活性的影响。结果显示叶面富硒与土壤富硒都能提高甘薯叶蛋白的硒含量,在1.6 mg/mL的富硒质量浓度条件下两种富硒处理组蛋白硒含量分别达到了20.10 mg/g与1.68 mg/g。富硒对甘薯叶蛋白的抗氧化活性有一定的提升作用,其中,叶面富硒可使甘薯叶蛋白超氧阴离子自由基清除率提升19.17%。根据相关性分析可知,除硒含量对抗氧化活性有较大影响外,样品中总酚与总黄酮含量也在一定程度上影响着样品的抗氧化活性。经对比可知,叶面富硒能更好地提高甘薯叶蛋白中的硒含量,是较佳的富硒方式。
This study investigated the effect of foliar versus soil application of selenium on the selenium content of sweet potato leaves and the antioxidant activity of sweet potato leaf proteins.The results showed that both foliar and soil applications of selenium could increase the protein-bound selenium content of sweet potato leaves.The protein-bound selenium contents of the foliar and soil selenium treatment groups at 1.6 mg/mL concentration were 20.10 and 1.68 mg/g,respectively.Selenium enrichment could improve the antioxidant activity of sweet potato leaf proteins.The superoxide anion free radical scavenging capacity of sweet potato leaf proteins was increased by 19.17%with foliar selenium enrichment.According to correlation analysis,the total selenium content and protein-bound selenium content of sweet potato leaves significantly affected the antioxidant activity,and the total phenolic and total flavonoid contents also affected the antioxidant activity.In conclusion,compared with soil selenium application,foliar selenium application was better in increasing the protein-bound selenium content of sweet potato leaves.
作者
高琦
段文瀚
彭雪
王宁
卢雅婷
张倩
薛友林
GAO Qi;DUAN Wenhan;PENG Xue;WANG Ning;LU Yating;ZHANG Qian;XUE Youlin(College of Light Industry,Liaoning University,Shenyang 110036,China;Party School of Liaoning Provincial Party Committee,Shenyang 110161,China)
出处
《食品科学》
EI
CAS
CSCD
北大核心
2024年第9期29-35,共7页
Food Science
基金
教育部新农科研究与改革实践项目(2020128)
教育部产学合作协同育人项目(230701160144419,231006655085437)
辽宁省“兴辽英才计划”项目(XLYC1807270)
辽宁省教育厅基本科研服务地方项目(LJKFZ20220183)
泰州市高层次创新创业人才引进计划项目(202149)。
关键词
富硒
甘薯叶蛋白
抗氧化活性
selenium enrichment
sweet potato leaf proteins
antioxidant activity
作者简介
第一作者:高琦(1980-)(ORCID:0000-0002-9883-6644),女,副教授,硕士,研究方向为农产品加工。E-mail:gaoqi0925@163.com;通信作者:薛友林(1980-)(ORCID:0000-0002-4241-7942),男,教授,博士,研究方向为农产品加工及贮藏。E-mail:xueyoulin@lnu.edu.cn。
