提取紫薯淀粉的副产物对shr血压的影响.pdfVIP

※营养卫生 食品科学 2010, Vol. 31, No. 21 361 SHR 1 1 2 2 胡志和 ， 张然嬉 ，冯永强 ，朱利民 (1.天津市食品生物技术重点实验室，天津商业大学生物技术与食品科学学院，天津 300134 ； 2.天津海河乳业有限公司，天津 300402) ：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(0.1 、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 20.83mmHg ，中剂量组在2h 时达到最低值，下降了23.50mmHg ， 高剂量组在 4h 时达到最低值，下降了24.48mmHg ，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。 ：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 1 1 2 2 HU Zhi-he ， ZHANG Ran-xi ， FENG Yong-qiang ， ZHU Li-min (1.Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, 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 (SHR) was investigated by using 12-week-old male SHR and Wistar rats as the trial animals with different gavage administ