海地瓜的营养成分及其降血脂功能

目的分析海地瓜的营养成分,探讨其降血脂功能。方法用高效液相色谱等技术分析了海地瓜的营养成分并同刺参进行了比较。以高脂饲料喂养雄性SD大鼠,建立高脂血症模型,观察海地瓜对肝指数和脂肪系数的变化情况及大鼠血脂水平、血清抗氧化功能的影响。结果海地瓜粗脂肪含量明显低于刺参,仅为0.43%,氨基酸含量丰富,包含人体所需的8种必需氨基酸,所测氨基酸中大部分含量高于刺参。海地瓜能显著降低大鼠肝指数和脂肪系数,能显著降低饲喂高脂饲料大鼠血清总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、动脉硬化指数(LDL-C/HDL-C)水平,升高高密度脂蛋白胆固醇(HDL-C)和动脉硬化指数(HDL-C/TC)值;能提高血清谷胱甘肽过氧化物酶(GSH-Px)的活性,并能降低血清丙二醛(MDA)和游离脂肪酸(NEFA)含量。结论海地瓜氨基酸含量丰富,粗脂肪含量低,具有调节降低血脂水平和增强抗氧化功能的作用,可减少高脂膳食导致的氧化损伤。它是一种非常好的保健品原料,在某些方面可替代目前价位最高的刺参。

THE NUTRIENTS CONSTITUENTS OF ACAUDINA LEUCOPROCTA AND ITS HYPOLIPIDEMIC EFFECT

Objective To analyse the nutrients of Acaudina leucoprocta and explore its hypolipidemic effect. Method The nutrients constituents of Acaudina leucoprocta were analyzed by high-performance liquid chromatography,and was compared with Apstichopus japonicus. The hyperlipidemia model was estabolished by feeding SD male mice with high fat feed. The change of liver index and fat coefficient as well as the effects on serum lipid,antioxidant capacity of serum in rats were observed. Results The fat content of Acaudina leucoprocta was only 0.43%,significantly lower than that of Apstichopus japonicus. The content of amino acids in Acaudina leucoprocta was higher than that of Apstichopus japonicus. Acaudina leucoprocta would decrease the liver index,fat coefficient and TC,TG,LDL-C,LDL-C/HDL-C in serum significantly,and increase HDL-C and HDL-C/TC. MDA and NEFA contents were effectively reduced. GSH-Px activitives were enhanced. Conclusion Acaudina leucoprocta is very rich in protein,and low in fat content. It has hypolipidemic and antioxidative effects,and may reduce the oxidative damage caused by high fat diet. Acaudina leucoprocta may be used as a functional food.