摘要
论文报道了经口腔灌注β-胡萝卜素溶液后其在牛血清和小肠吸收细胞脂蛋白中的分布。试验结果表明:β-胡萝卜素在血清中的运输主要由HDL完成,吸收细胞中的可溶性β-胡萝卜素均与脂蛋白结合,绝大多数结合于乳糜微粒。鉴于β-胡萝卜素的脂溶性特征,其吸收是与脂肪紧密结合的,推断是1种被动吸收机制。在吸收细胞和血清中除脂蛋白以外未发现其它β-胡萝卜素转运蛋白。
Distribution of β carotene among the lipoprotein in small intestinal epithelial cells (enterocytes) and the serum in bovine after the animal was drenched with β carotene solution were investigated.Most β carotene in serum was found transported with HDL.All the soluble β carotene in enterocytes were associated with lipoprotein.Most of them bound to chylomicron.It is suggested that the absorption of β carotene was passively,associated with lipid uptake due to its hydrophobicity.No other protein than lipoproteins was found to be associated with the soluble β carotene in enterocytes and the serum.
出处
《江苏农业学报》
CSCD
北大核心
1998年第4期220-222,共3页
Jiangsu Journal of Agricultural Sciences