Evaluation of nutritional and safe quality of Chimonobambusa utilis bamboo shoots and the surrounding soil in Nanchuan, Chongqing
Li-Ran BAO, Zhong-Min JIA(), Yu LI, Jia-Bin WANG
Chongqing Key Laboratory of Land Quality Geological Survey, Southeast Sichuan Geological Group, Chongqing Bureau of Geology and Minerals Exploration, Chongqing 400038, China
To understand the nutritional quality, safe quality and growing environment of Chimonobambusa utilis in Nanchuan, Chongqing, the authors analyzed the basic nutritional components, mineral elements and heavy metal elements of Chimonobambusa utilis bamboo shoots, and evaluated the grade of nutrient elements, environmental quality, and Se and Ge in the surrounding soil. The results show that the concentrations of moisture, protein, total sugar, K, Zn and Cu of Chimonobambusa utilis bamboo shoots were high. The bamboo shoots contain 17 kinds of amino acids, and essential amino acids account for 39.9%. Chimonobambusa utilis bamboo shoots are Se-rich food, with the content of Se 0.006×10 -6~0.042×10 -6 and Se-rich rate 73%. The bamboo shoots are not Ge-rich food, with the content of Ge being 0.0002×10 -6~0.0018×10 -6. The soil nutrients in the surrounding soil are abundant. Except for K and CaO, the nutrient grades are all relatively rich or rich and the content of Se in soil is high. Some Cd elements in the soil exceed the standard which do not affect the safety quality of the bamboo shoots, and other heavy metals are better in environmental quality.