食品科学

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湿热处理多孔玉米淀粉对大鼠脂质代谢的影响

刘庆庆1,2,游玉明2,3,陆红佳2,3,田宝明2,陈朝军2,刘 雄2,*   

  1. 1.铜仁学院生物与农林工程学院,贵州 铜仁 554300;2.西南大学食品科学学院,重庆 400715;
    3.重庆文理学院林学与生命科学学院,重庆 402160
  • 出版日期:2016-07-15 发布日期:2016-07-26
  • 通讯作者: 刘 雄
  • 基金资助:

    野生动植物保护与利用重点学科建设项目(黔学位合字ZDXK[2013]09号);贵州省教育厅特色实验室建设项目“梵
    净山特色动植物资源重点实验室”(黔教合KY字[2011]005号);重庆市教委科学技术研究项目(KJ1401101)

Effect of Heat-Moisture Treated Corn Porous Starch on Lipid Metabolism in Rats

LIU Qingqing, YOU Yuming, LU Hongjia, TIAN Baoming, CHEN Zhaojun, LIU Xiong   

  1. 1. College of Biology and A&F Engineering, Tongren University, Tongren 554300, China; 2. College of Food Science,
    Southwest University, Chongqing 400715, China; 3. College of Forestry and Life Science,
    Chongqing University of Arts and Science, Chongqing 402160, China
  • Online:2016-07-15 Published:2016-07-26
  • Contact: LIU Xiong

摘要:

目的:探讨湿热处理多孔玉米淀粉对大鼠脂质代谢的影响。方法:32 只雌性Sprague-Dawley(SD)大鼠随机分为4 组,其中1 组为对照组饲喂基础饲料,另外3 组为高脂组,分别为高脂空白组、多孔淀粉组(porousstarch,PS)和湿热处理多孔淀粉组(heat moisture treatment starch,HTMPS),饲喂基础饲料,适应1 周后,对照组饲喂基础饲料,高脂组分别饲喂相应高脂饲料。饲喂4 周后解剖,检测大鼠血脂、肝脂及小肠和粪便中胆汁酸等指标。结果:饲喂多孔淀粉和湿热处理多孔淀粉组大鼠血清总胆固醇(total cholesterol,TC)、甘油三酯(triglyceride,TG)、非高密度脂蛋白胆固醇(non-high-density lipoprotein cholesterol,non-HDL-C)、抗动脉硬化指数(atherosclerosis index,AI)、甘油三酯/高密度脂蛋白胆固醇(TG/HDL-C)、肝脏TC、肝脏总TC和腹部脂肪含量显著下降(P<0.05),粪便中粪醇、胆固醇等中性固醇排泄量增加,粪便中胆汁酸排泄量显著增加(P<0.05)。PS组与HTMPS组相比,大鼠血浆中TC、AI、腹部脂肪含量、肝脏总脂肪含量较低,粪便中胆汁酸及小肠内容物中胆汁酸较高。结论:多孔淀粉降血脂降胆固醇效果优于湿热处理多孔玉米淀粉,可降低高脂饮食造成的高脂血症风险,对预防心血管疾病有一定的作用。

关键词: 多孔玉米淀粉, 湿热处理, 血脂, 中性固醇

Abstract:

Objective: To investigate the effect of heat-moisture treated corn porous starch on lipid metabolism in rats.
Methods: Totally 32 female Sprague-Dawley rats were randomly divided into 4 groups including control group and three
other groups as high-fat blank group, high-fat porous starch (PS) group and high-fat heat-moisture treated corn porous starch
(HTMPS) group. After adaptive feeding with a basal diet for a week, the rats from the control group were still fed with the
basal diet and those from high-fat groups were given a high fat diet. After 4 weeks, all rats were sacrificed for the analysis
of triglyceride (TG), cholesterol (TC) in serum and liver, and bile acid in small intestine and feces. Results: By feeding corn
porous starch and heat-moisture treated corn porous starch, the contents of TC, TG and non-HDL-C in serum, atherosclerosis
index (AI) and TG/HDL-C ratio in serum as well as TC content in liver and abdominal fat content decreased significantly
(P < 0.05); the fecal excretion of neutral steroid and bile acid increased significantly (P < 0.05). Compared with HTMPS
group, the rats from PS group revealed a reduction in serum TC level, AI, TG/HDL-C ratio and abdominal fat, and an
increase in fecal bile acid excretion and bile acid in small intestinal contents. Conclusion: PS is more successful in reducing
cholesterol than HTMPS. Therefore, porous starch can reduce the risk of hyperlipidemia caused by high-fat diet, and has a
significant role in preventing cardiovascular diseases.

Key words: corn porous starch, heat-moisture treatment, serum lipids, neutral steroid

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