季节和放牧地对天祝白牦牛乳中维生素含量的影响研究  

Analysis of Vitamins Contents in White Yak's Milk under Different Seasons and Pastures

作　　者：常海军[1] 周文斌[1] 王强[2] 余群力[3] 甘伯中[3] 

机构地区：[1]重庆工商大学环境与生物工程学院,重庆400067 [2]重庆教育学院生命科学与化学系,重庆400067 [3]甘肃农业大学食品科学与工程学院,甘肃兰州730070

出　　处：《重庆工商大学学报（自然科学版）》2011年第1期75-79,共5页Journal of Chongqing Technology and Business University:Natural Science Edition

基　　金：教育部优秀青年教师科研和奖励基金(0330872);重庆工商大学博士科研启动基金项目(2010-56-12)

摘　　要：建立了乳中多种维生素HPLC法同时测定的相应色谱条件和样品前处理方法,对天祝放牧白牦牛在不同季节和放牧地分泌乳中维生素含量的进行了研究分析,结果表明:白牦牛乳中维生素的含量受不同放牧季节的影响变化较大,维生素A和维生素E的含量在夏季牧场含量最高,分别为46.10单位和104.22μg/100 mL,维生素B_1、B_6和B_(11)的含量在白牦牛不同放牧季节无显著差异(P>0.05),而放牧季节显著影响乳中维生素B_3和B_5的含量(P<0.05),白牦牛不同放牧地对乳中维生素含量影响较小。The high performance liquid chromatography （HPLC） method for a simultaneous determination of vitamins in white yak＇ s milk has been developed. By the analysis of vitamins contents of white yak＇ s milk under different seasons and pastures, the results showed that vitamins contents in white yak＇ s milk were largely affected by the different seasons, the contents of vitamin A and E were maximal at the summer time, and they were 46.10 and 104.22 μg/100 mL respectively. There were no significant differences for the contents of vitamin B1 ,B6 and Btl under different seasons （ P 〉 0.05 ） , but the season affected the contents of vitamin B3 and B5 significantly （ P 〈 0.05 ）. The different pastures had less effect on vitamins contents for white yak＇ s milk.

关 键 词：白牦牛乳 维生素 含量 季节 放牧地 

分 类 号：O65[理学—分析化学]