山核桃果仁微量元素分析初报

通过野外调研并采集临安山核桃Carya cathayensis果实及对应的山核桃林地土壤．分析山核桃果仁品质和不同母质类型土壤的基本理化性质，比较了石灰岩母岩土壤和非石灰岩母岩土壤上山核桃品质的差别。结果表明．生长于石灰岩母岩土壤和非石灰岩母岩土壤的山核桃果仁都富含粗蛋白和粗脂肪。经t检验分析．不同土壤对果仁粗蛋白和粗脂肪质量分数的影响没有达到显著差别。果仁粗蛋白和粗脂肪变幅分别为90-109g·kg^-1和665。694g·kg^-1。山核桃果仁中的微量元素丰富，特别是锌和铁，变幅分别为30．51mg·kg^-1和36～94mg．kg^-1。果仁微量元素量与成土母质、母岩性质密切相关。硒为某些石灰岩母岩土壤山核桃果仁所特有。表4参13

Trace elements in kernels of Chinese hickory(Carya cathayensis) grown in limestone and non-limestone soils

Because of only a few direct research reports, a field survey was conducted to determine kernel quality of Chinese hickory （Carya cathayensis ）, a reputed healthy food in China, grown in limestone soils, which are believed to be better for the trees than other soils. Soils were divided into two groups, namely limestone soils and the other non-limestone soils. Next, nuts of C. cathayensis with corresponding soil samples were collected. Kernel quality was analyzed compared using a t-test. Results showed that the g.kg^-1） and crude fat （ranging from 665 to 694 the two soil groups. The kernels were also rich in for crude protein, crude fat, and trace elements and then kernels were rich in crude protein （ranging from 90 to 109 g. kg^-1）, but there were no significant differences between many nutritional trace dements, especially Zn （30 - 51 mg.kg^-1） and Fe （36 -94 mg.kg^-1）. However, concentrations of most analyzed trace elements in the kernels were higher when collected from the trees grown in non-limestone soils, whereas Se was only detected in kernels grown in some of the limestone soils. Thus, more effort is needed to develop high quality C. cathayensis kernels rich in Zn, Fe, and Se for healthy and nutritious food products. Ch, 4 tab. 13 ref.]