营养代餐粉和营养米粉的血糖生成指数与饱腹感指数研究

Glycemic and satiety indexs of nutritional meal replacement powder and rice flour and its influencing factor analysis

目的研究营养代餐粉和营养米粉的血糖生成指数(GI)与饱腹感指数(SI)及其影响因素.方法11名健康志愿者分别服用葡萄糖溶液(Glu组)、营养代餐粉(M组)和营养米粉(R组),检测各组空腹及餐后120 min内的七个时间点血糖值,同时用视觉模拟量表问卷评分法(VAS)记录空腹及240 min内的七个时间点饱腹感程度,计算GI和SI.结果M组GI低于R组[(54.3±13.06)vs(91.3±32.5),P<0.01];M、R组SI在60、120、180、240 min比较,差异无统计学意义(P>0.05),但两组SI均高于Glu组(P<0.01).结论营养代餐粉和米粉均有较高的SI,是健康良好的耐饥食品;代餐粉GI较低,适合肥胖症、糖尿病、冠心病、高血压等慢性病患者.

Objective To evaluate the glycemic index(GI)and satiety index(SI)of meal replacement powder and rice flour and its influence factors.Methods A total of 11 healthy volunteers were enrolled in this study.They were treated with 50 g glucose and two kinds powders:nutritional meal replacement powder and nutritional rice flour,both of which contained 50 g carbohydrates.Severrpoint blood glucose values were measured within 2 hours.At the same time,the visual analog scale questionnaire scoring method(VAS)was used to record seven points of satiety within 4 hours.GI and SI were calculated.Results The GI was lower in meal replacement powder group than in rice flour group[(54.3±13.06)vs(91.3±32.5),P<0.01].The SI had no statistical difference at 60,120,180,240 min between the two groups(P>0.05).But the SI in both groups were higher than that in the glucose group with statistical differences(P<0.01).Conclusion Both meal replacement powder and nutritional rice flour have high satiety and SI,which are healthy hunger-resistant foods.The meal replacement powder has lower GI,which is suitable for obesity,diabetes and patients with chronic diseases such as coronary heart disease and hypertension.Energy density was an influencing factor for GI.