Xie L H, Tang S Q, Wei X J, Shao G N, Jiao G A, Sheng Z H, Luo J, Hu P S
China National Rice Research Institute, Hangzhou 310006, PR China; China National Center for Rice Improvement/State Key Laboratory of Rice Biology, Hangzhou 310006, PR China.
China National Rice Research Institute, Hangzhou 310006, PR China; China National Center for Rice Improvement/State Key Laboratory of Rice Biology, Hangzhou 310006, PR China.
Food Chem. 2017 Feb 15;217:217-224. doi: 10.1016/j.foodchem.2016.08.099. Epub 2016 Aug 27.
The cadmium (Cd) and lead (Pb) content in both white and wholemeal flour milled from 110 leading rice cultivars was assessed. The white flour Cd content ranged from <0.0025 to 0.2530mg/kg (geometric mean (GM)=0.0150mg/kg), while its Pb content ranged from <0.0250 to 0.3830mg/kg (GM=0.0210mg/kg). The indica types took up higher amounts of Cd and Pb than did the japonica types. Although the heavy metal content of wholemeal flour tended to higher than that of white flour, nevertheless 84.5% (Cd) and 95.4% (Pb) of the entries were compliant with the national maximum allowable concentration of 0.2000mg/kg of each contaminant. An analysis of the Cd content in the white flour of three indica type cultivars grown in two consecutive years at two locations indicated that Cd content may be significantly affected by the conditions prevailing in the growing season.
对110个主要水稻品种磨制的白面粉和全麦面粉中的镉（Cd）和铅（Pb）含量进行了评估。白面粉的镉含量范围为<0.0025至0.2530mg/kg（几何平均值（GM）=0.0150mg/kg），而其铅含量范围为<0.0250至0.3830mg/kg（GM=0.0210mg/kg）。籼稻类型比粳稻类型吸收的镉和铅更多。尽管全麦面粉的重金属含量往往高于白面粉，但84.5%（镉）和95.4%（铅）的样本符合国家规定的每种污染物0.2000mg/kg的最大允许浓度。对两个地点连续两年种植的三个籼稻品种白面粉中的镉含量分析表明，镉含量可能受到生长季节主要条件的显著影响。
