天冬氨酸转氨酶发酵产酶条件的研究.pdf

※营养卫生食品科学 2010, Vol. 31, No. 21 361
提取紫薯淀粉的副产物对 SHR 血压的影响
胡志和 1, 张然嬉 1,冯永强 2,朱利民 2
(,天津商业大学生物技术与食品科学学院,天津 300134;
,天津 300402)
摘要:以紫薯为原料,12 周龄雄性原发性高血压大鼠(SHR)和 Wistar 大鼠为受试动物,研究紫薯全粉、滤渣、
淀粉、水溶性提取物的降血压作用。上述分别以低、中、高 3 个剂量(、1、5g/ kg bw)灌胃 SHR 大鼠和 Wistar
大鼠,观察对大鼠血压的影响。结果表明:在所选定的灌胃剂量范围内紫薯各成分对正常大鼠(Wistar 大鼠)血压无
影响。除淀粉外,其他各成分对 SHR 大鼠的血压均具有显著降低的作用,其中以水溶性提取物作用最为明显,灌
胃后,低剂量组在 1h 时达到最低值,下降了 ,中剂量组在 2h 时达到最低值,下降了 ,
高剂量组在 4h 时达到最低值,下降了 ,然后血压开始慢慢回升,在 8h 时基本恢复到灌胃前的水平。
提取紫薯淀粉后的副产物均有明显降血压作用。
关键词:紫薯;高血压;原发性高血压大鼠;淀粉
Effect of Purple Potato Homogenate and Its Separated Fractions on Blood Pressure of SHR
HU Zhi-he1, ZHANG Ran-xi1, FENG Yong-qiang2, ZHU Li-min2
( Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University merce,
Tianjin 300134, China ;2. Tianjin Haihe Dairy Co. Ltd., Tianjin 300402, China)
Abstract:Purple potato homogenate was filtrated through multiple layers of gauze, and both the filtrate and residue were
harvested. After a period of time of sedimentation, the filtrate was separated into two layers, namely water-soluble upper layer
and starch-rich lower layer. The effects of purple potato homogenate, its filtration residue and the water soluble and starch-rich
factions of its filtrate on blood pressure of spontaneously hypertensive rats (S