普洱茶对大鼠钙磷代谢的影响

Effect of Pu'er Tea on Metabolism of Calcium and Phosphorus in Rats

初步探讨普洱茶对实验大鼠钙磷代谢的影响。采用100只雄性Wistar大鼠按照体质量随机分为对照组(纯净水),普洱熟茶低、中、高剂量组,普洱生茶低、中、高剂量组,曲茗绿茶低、中、高剂量组,每组10只,分别灌胃纯净水,0.5、1.0、2.0g/(kg·d)(以体质量计)的普洱茶和绿茶茶汤,进行为期90d的灌胃实验。实验结束后将大鼠处死,测定分析普洱茶对实验大鼠钙磷代谢的相关指标。结果发现:各实验组动物粪钙含量均显著低于对照组(P<0.05),除高剂量普洱生茶组和高剂量普洱熟茶组外,其他实验组大鼠粪磷含量与对照组相比无明显差异(P>0.05);各实验组钙磷表观吸收率与对照组相比无显著差异(P>0.05);结论:在本实验条件下,该批普洱生茶、普洱熟茶和绿茶对实验大鼠的钙磷代谢无影响。

In this paper, the effect of pu＇ er tea on metabolism of calcium and phosphorus in rats was investigated. A total of 100 male Wistar rats were randomly divided into 10 groups for 10 rats in each group. The first group was designated as the control group administered with pure water by gavage. Nine groups were designated as treatment groups with daily oral administration of fermented pu＇ er tea, unfermented pu＇ er tea and green tea extract at the dosages of 0.5, 1.0 g/（kg ＊ d） and 2.0 g/（kg＊d）, respectively. After 90 days consecutive treatment, the rats were sacrif＇lced and metabolic index of pu er tea on calcium and phosphorus in rats were determined. Results indicated that calcium content in stool of each experimental group was significantly lower than that in the control group （P 〈 0.05）. Except for unfermented and fermented pu ＇er tea groups at high dosage, calcium contents in stool of other experimental groups had no significant difference （P 〉 0.05）, compared with the control group. Compared with the control group, apparent absorption rates of calcium and phosphorus in experimental groups had no significant difference （P 〉 0.05）. Therefore, the moderate consumption of fermented pu＇ er tea, unfermented pu＇ er tea and green tea had no effect on metabolism of calcium and phosphorus in rats.