摘要
通过对3只泌乳山羊连续服用镉,研究了镉从全乳向乳产品的转移。试验羊摄入镉之前,乳镉浓度为<0.2～0.2μg/L,摄入镉期间,乳镉浓度为1.2～4.6μg/L,在奶油中镉的浓度是原始乳镉的3.1±0.7倍,在用酸化法和加酶法制作的奶酪中的镉分别是原始乳镉的3.3±0.3倍和5.7±0.7倍。原始乳中的镉,大约25％分布在奶油中(23.9±5.4％),大约60％分布在奶酪中(61.6±5.4％分布在用加酶法制作的奶酪中,56.8±4.8％分布在用酸化法制作的奶酪中),分布在两种乳清中的镉分别为12.9±2.8％和16.3±5.3％。从原始乳向全部乳产品转移的镉为99.2～100.4％。
cadmium transfer from whole milk to milk products was studied before and following a repeated oral cadmium administration to 3 goats. Prior to cadmium administration, milk cadmium levels ranged from less than 0.2 to 0.2μg / L, during cadmium administration, cadmium levels ranged from 1.2 to 4.6 ±μg / L in the milk used for cheese making. The factor of concentration of cadmium from whole milk to cream was 3. 1 ± 0.7, to lactic curds was 3.3 ± 0.3 and to rennet curds was 5.7 ± 0.7. A quarter of the cadmium contained in the original milk was found in the cream (23.9±5.4%), about 60% in curd(61.6±5.4% in rennet curds and 56.8±4.8% in lactic curds), 12.9 ± 2.8% in rennet curd whey and 16. 3 ± 5.3% in lactic curd whey. The fraction of to- tal cadmium transferred from milk to its milk products ranged from 99.2% to 100.4%.
