木薯块根不同部位的矿质元素研究  

Study on Mineral Elements in Different Parts of Cassava Root

作　　者：魏艳[1,2] 黄洁[1] 林立铭 

机构地区：[1]中国热带农业科学院热带作物品种资源研究所/农业部木薯种质资源保护与利用重点实验室,海南儋州571737 [2]中国热带农业科学院科技信息研究所,海南儋州571737

出　　处：《西南农业学报》2016年第9期2106-2113,共8页Southwest China Journal of Agricultural Sciences

基　　金：农业部现代农业产业技术体系建设专项资金(CARS-12-hnhj);农业部农业行业标准制定项目"热带作物品种区域试验技术规程-木薯"(ICS 65.020.20)

摘　　要：为进一步研究木薯块根中矿质元素的分布规律,提高木薯的综合利用价值,采用等离子发射光谱法,测定了6份木薯种质全薯、薯肉、薯皮的头、中、尾3段7种矿质元素的含量。结果表明：薯肉的K、Ca、Mg、Fe、Mn、Zn、Cu含量（干基）分别为333.1-620.8、28.7-150.7、45.0-132.3、1.08-4.10、0.36-1.05、0.47-1.81、0.12-0.32 mg/100g,部分矿质营养价值优于马铃薯、糙米,不亚于甘薯和小麦;薯皮的Ca、Mn、Zn、Fe、K、Cu含量分别为薯肉的2.4-16.2、3.1-7.8、1.8-7.7、1.1-6.5、1.1-2.6、1.1-2.5倍,部分矿质营养价值优于或不亚于红枣、核桃、杏仁,值得重视薯皮的综合利用;不同段的薯肉和薯皮Ca、Mn、Zn元素存在较密切的相关关系。In order to further study the mineral element distribution in cassava root and enhance its comprehensive utilization,the contents of seven mineral elements in the head,middle and end sections of the whole root,flesh and cortex of six cassava germplasms by plasma emission spectroscopy were analyzed. The results showed that the contents of K,Ca,Mg,Fe,Mn,Zn,Cu in the dry flesh were 333. 1- 620.8,28. 7- 150. 7,45. 0- 132. 3,1. 08- 4. 10,0. 36- 1. 05,0. 47- 1. 81,0. 12- 0. 32 mg /100 g,respectively,and the nutrition values of some mineral elements in the flesh of cassava root were higher than that in potato,brown rice,or as high as sweet potato and wheat. The contents of Ca,Mn,Zn,Fe,K and Cu in the cortex were 2. 4- 16. 2,3. 1- 7. 8,1. 8- 7. 7,1. 1- 6. 5,1. 1- 2. 6,1. 1- 2. 5 times higher than that in the flesh,and the nutrition values of some mineral elements in the cortex of cassava root were higher than or as high as that in dates,walnuts and almond,therefore,the comprehensive utilization of the cortex of cassava root was worthy of attention. There were close correlation among Ca,Mn,Zn in different parts of cassava root.

关 键 词：木薯 块根 薯肉 薯皮 矿质 

分 类 号：S533[农业科学—作物学]