芥蓝主要营养成分与活性氧代谢的研究  

Research on main nutritional components and active oxygen metabolism in Chinese kale(Brassica alboglabra Bailey)

作　　者：叶珺琳 张晓艳[1] 柴喜荣[1] 赵普艳[1] 康云艳[1] 李仕芳 杨暹[1] 

机构地区：[1]华南农业大学园艺学院,广东广州510642 [2]深圳市华盛实业股份有限公司,广东深圳518001

出　　处：《广东农业科学》2016年第4期57-62,共6页Guangdong Agricultural Sciences

基　　金：广东省科技计划项目(2012B020303001;2012A020603009;2014A020209068);广东省现代农业产业技术体系特色蔬菜产业创新团队项目(粤农[2009]380号);深圳市技术创新计划项目(20141013110401);国家自然科学基金(31201631;31301767)

摘　　要：以迟花芥蓝品种为材料,对芥蓝不同器官以及同一器官不同部位的营养成分和活性氧代谢进行研究。结果表明:芥蓝的不同器官及同一器官不同部位的营养成分和活性氧代谢水平存在着明显差异。同一器官不同部位的可溶性糖、还原糖、果糖、蔗糖和游离氨基酸含量从上部到下部逐渐下降;不同器官的可溶性糖、还原糖、果糖、蔗糖和游离氨基酸含量以薹茎最高,叶柄次之,叶片最低。同一器官不同部位的硝酸盐和亚硝酸盐含量从上部到下部逐渐增加;不同器官的亚硝酸盐含量以薹茎最低,而叶片和叶柄则较高。同一器官不同部位的SOD、POD、CAT活性从上部到下部逐渐降低,MDA含量逐渐增加;不同器官中以薹茎的SOD、POD活性最高,叶片最低,而CAT活性和MDA含量以叶片最高。可见,芥蓝上部器官以及薹茎的营养成分含量最高,食用安全性最好,随着植株生理年龄的延长,活性氧的清除能力逐渐降低,膜脂过氧化水平逐渐加强,不同器官中以薹茎的活性氧清除能力最高,而叶片最低。The main nutritional components and active oxygen metabolism in different organs （leaf, petiole, flower stalk stem ） and different parts （ top, middle, bottom ） of the same organ were analyzed in Chinese kale （ Brassica alboglabra Bailey cv. Chihua kale ） . The results showed that the contents of nutrients and the level of active oxygen metabolism exhibited remarkable differences among different organs and different parts of the same organ. In general, the contents of soluble sugar, reducing sugar, fructose, sucrose and free amino acids gradually reduced from top to the bottom parts of the same organ. Among different organs, the contents of soluble sugar, reducing sugar, fructose, sucrose and free amino acids were found highest in flower stalk stem, followed by petiole and leaf. The content of nitrate and nitrite gradually increased from top to the bottom parts of the same organ. Among different organs, the content of nitrite was the lowest in flower stalk stem and relatively high in petiole and leaf. The activities of SOD, POD and CAT gradually decreased, and MDA content gradually increased from top to bottom parts of the same organ. The highest level of SOD and POD activities were found in flower stalk stem and lowest in leaf. However, leaf had the highest CAT activity and MDA content. Based on these results, it can be clearly seen that the upper parts of kale and the flower stalk stem had the highest level of nutrients and the best edible safety. Along with the prolonged physiological age of kale plants, the active oxygen species-scavenging capability gradually decreased and the membrane lipid peroxidation gradually increased. Among different organs of Chinese kale, active oxygen species-scavenging capability was found highest in flower stalk stem, and lowest in leaf.

关 键 词：芥蓝 营养成分 活性氧代谢 不同器官 不同部位 

分 类 号：S634.3[农业科学—蔬菜学]