【作者】 常银子；

【导师】 钟海雁； 李忠海；

【作者基本信息】 中南林学院 ， 森林培育， 2003， 硕士

【摘要】 百合是百合科植物卷丹、麝香百合、细叶百合等的干燥肉质鳞茎。很多研究已经表明百合内含有淀粉、多糖、膳食纤维、皂甙及秋水仙碱等活性成分，并具有多种保健作用，但是有关百合膳食纤维保健功能的研究尚未见报道，深入探讨百合膳食纤维(DF)的功能特性对百合的综合利用具有十分重要的意义。 本实验以麝香百合渣、卷丹渣和麝香百合膳食纤维为原料，探讨不同品种和加工方法对其功能的影响，将其分别配制成1.6g/kg、7.8g/kg重、15.6g/kg体重三个浓度，同时设空白对照组和模型对照组，以白鼠为实验对象，其结果如下： DF对小白鼠胃肠道功能的影响：以小鼠进食量、食物利用系数、排便质量、粪便含水量、首次排便时间、小肠推进率以及重量为实验指标，对小鼠进行改善胃肠道的功能评价。结果表明，与空白对照组相比，中、高浓度实验组的进食量、重量有极显著增加(p＜0.01)：高浓度百合膳食纤维组的食物利用系数有显著增加(p＜0.05)；与模型对照组相比，中、高浓度实验组的小肠推进率有极显著增加(p＜0.01)；各实验组的首次排便时间有极显著差异(p＜0.01)；高浓度实验组的排便质量、粪便含水量有极显著增加(p＜0.01)。 DF对高血糖小白鼠的影响：以正常小鼠的空腹血糖值、四氧嘧啶所致高血糖小鼠的血糖值和高血糖耐受量为实验指标，对小白鼠进行功能评价。结果表明，百合膳食纤维可预防糖尿病，治疗由四氧嘧啶所致的糖尿病，改善由四氧嘧啶所致糖尿病小鼠的耐受量。 DF对高血脂、肥胖大白鼠的影响：以肥胖型大白鼠为模型对照组，观察百合膳食纤维对大鼠血液中TC、LDL-C、TG和HDL-C的调节作用，实验说明了各实验组的重量、TC、LDL-C、动脉硬化指数有极显著差异(p＜0.01)；中、高浓度的TG、HDL-C有极显著差异(p＜0.01)；低浓度的体脂百分率有极显著差异(p＜0.01)。因此，百合膳食纤维具有调节血脂和减肥的功能。 通过相关分析，在浓度较大时，原料和产品能够显著影响小白鼠改善胃肠道功能和降血糖功能，相关系数＞0.05，百合的种类则不会影响小白鼠改善胃肠道功能和降血糖功能。 综上所述，百合膳食纤维具有改善白鼠胃肠道、降低血糖、调节血脂和减肥的功能，可以认为百合膳食纤维对人体具有重要保健功能。更多还原

【Abstract】 Lily is the dry fleshy bulb of the liliaceous plant. A lot of studies indicated that health care functional ingredients were found in the Lily such as starch. Lily amylose, Lily DF, Lily saponin, colchicines, and so on. However, it isn’t reported about the health care function of Lily DF. So it is of great significance to search the functions of Lily DF for utilization.The function of health protection of DF was investigated using the dregs and DF of white trumpet lily and tiger lily as test materials with mices, in which the samples were prepared to the concentrations of 1.6g/kg, 7.8g/kg, and 15.6/kg body weight. The results as follows:Effects of the DF on the gastic-intestinal function of mice were evaluated based on the feeding weight, the alimental using coefficient, the defecating weight, the first defecating time, the moisture of the dejecta, the alvine advancing rate. The results showed the feeding weight and weight of mice fed by high and middle concentrations of Lily DF were significantly increased compared with control(pO.Ol); the alimental using coefficient fed by the high concentration was sharply increased(p<0.05); the alvine advancing rate of fed by the high and middle concentrations was increased significantly contrasted to the model control(p<0.01); the first defecating time of all groups were of great difference(p<0.01); the defecating weight and the moisture of the dejecta were obviously increased(p<0.01). It was concluded that the high concentration of Lily DF was the best to improve the gastic-intestinal function of mice.Influences of DF to the hyperglycemia mice were valued by the indices of the blood sugar value and the endurance of hyperglycemia mice due to alloxan. The results suggested that diabetes could be prevented, diabetes caused by alloxan could be cured, and that the endurance of hyperglycemia mice due to alloxan was improved.Effects on the hyperlipaemia and over-weighted mice: the adjustment to TC, LDL-C, TG, and HDL-C of mice was studied with the over-weighted mice as the control. The results demonstrated that the weight, TC, LDL-C, and arteriosclerosis index of all groups were obviously different (p<0.01). TG and HDL-C of high and middle concentration was of significant difference (p<0.01); the percent of LDL. Conclusion was that Lily DF held the function of moderating hyperlipaemia and losing weight.Through the analysis of bivariate correlations, not the kinds of Lily but the material and product adjusted the gastic-intestinal function and blood glucose greatly (C>0.05).As discussed above, the Lily held the functions of the gastic-intestinal function, decreasing blood glucose, moderating lipaemia, and losing weight. It could be pointed out that the DF had the health care function to people.更多还原