不同颜色三色苋叶片的色素含量与抗氧化能力  

Leaf pigment content and antioxidant capacity of different colored Amaranthus tricolor

作　　者：罗阳 周涛 卢蕊 于博洋 向佐湘[1] 胡龙兴[1,2] 徐倩 LUO Yang;ZHOU Tao;LU Rui;YU Boyang;XIANG Zuoxiang;HU Longxing;XU Qian(College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China;Academician WorkstationAgricultural High-Tech Industrial Area of the Yellow River Delta,National Center of Technology Innovation forComprehensive Utilization of Saline-Alkali Land,Dongying,Shandong 257300,China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]黄三角农高区院士工作站国家盐碱地综合利用技术创新中心,山东东营257300

出　　处：《湖南农业大学学报（自然科学版）》2024年第5期61-69,共9页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：中国科学院战略性先导科技专项(XDA26050201);山东省重点研发计划项目(2022LZGC018);黄三角国家农高区省级科技创新发展专项(2022SZX13)。

摘　　要：为明确不同颜色三色苋(Amaranthus tricolor)叶片的叶色参数、色素含量与抗氧化能力之间的关系,以7种彩叶三色苋为试验材料,按照不同颜色分为13个叶色组织,测定其叶色参数值、色素含量、生物活性物质含量及抗氧化能力指标值,并进行相关性分析和隶属函数分析。结果表明:13个叶色组织的叶色参数、色素含量、生物活性物质含量和抗氧化能力存在明显差异;不同叶色组织的L为27.78~82.22,a为-21.93~53.14,b为1.00~60.33,c为3.10~69.06;绿色和紫色叶片的叶绿素a、叶绿素b、总叶绿素、类胡萝卜素含量显著高于黄色、红色叶片的;红色和紫色叶片中的甜菜色素、总黄酮和总多酚含量显著高于黄色和绿色叶片的;a、甜菜色素、总黄酮和总多酚含量与抗氧化能力指标呈极显著正相关;紫色、红色、绿色、黄色的三色苋叶片的抗氧化能力依次降低。To understand the relationship between leaf color parameters,pigment content and antioxidant capacity of different colored Amaranthus tricolor L.leaves,seven colorful A.tricolor leaves were collected and analysised in this study.The leaves were divided into 13 types of leaf color tissues according to their colors,and leaf color parameters,pigment contents,biologically active substances contents,and indicators of antioxidant capacity were examined and the correlation and membership function of the above parameters were analyzed.The results showed that there were significant differences in leaf color parameters,pigmentation content,bioactive substance content and antioxidant capacity in the studied 13 leaf color tissues.The L of different leaf color tissues ranged from 27.78 to 82.22,the a from-21.93 to 53.14,the b from 1.00 to 60.33 and the c from 3.10 to 69.06.The contents of chlorophyll a,chlorophyll b,total chlorophyll,carotenoids were significantly higher in green and purple leaves than in yellow and red leaves.The contents of betalain,total flavonoids and total polyphenols were higher in red and purple leaves than in yellow and green leaves.The a,the contents of betalain,total flavonoids and total polyphenols were positively correlated with both antioxidant activity indices.The antioxidant capacities of different colored A.tricolor leaves were ranked from high to low in the order of purple,red,green,and yellow A.tricolor leaves.

关 键 词：三色苋 叶色参数 光合色素 甜菜色素 抗氧化能力 

分 类 号：S636.4[农业科学—蔬菜学]