香蕉低聚糖的通便功能评价
Evaluation on the defecation functions of banana oligosaccharides
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摘要: 为比较不同品种香蕉低聚糖的通便功能,选取皇帝蕉(Musa AA Pisang Mas)和粉蕉(Musa ABB Pisang Awak),提取低聚糖后分别设置两种浓度(高剂量组2.5 g/(kg·BW·d)和低剂量组1.25 g/(kg·BW·d)),参考《保健食品检验与评价技术规范(2003版)》中"通便功能检验方法"开展小肠运动实验和排便实验。小肠运动实验和首便时间结果表明,在95%的置信区间内,四个药剂组的小肠墨汁推进率显著高于便秘模型组,首例黑便排出时间显著低于便秘模型组,表明两种香蕉低聚糖在实验设置的两种浓度下都有促进小鼠肠道蠕动的效果,差异有统计学意义(p<0.05)。两种香蕉共四个剂量组的组间差异性不明显。同时,两种香蕉在两种浓度下对受试小鼠的排便粒数和粪便重量均无积极影响。在此基础上测定粪便含水量和肠道含水量结果表明,两种香蕉在两种浓度下对受试动物的粪便及小肠的含水量无显著影响,推测香蕉低聚糖并不是通过提高肠道系统或粪便含水量从而促进排便。Abstract: Oligosaccharides were extracted from two cultivars of bananas( Musa AA Pisang Mas and Musa ABB Pisang Awak)separately,and 2 dose groups 2.5 g /( kg·BW·d) and 1.25 g /( kg·BW·d) were set up for each variety.According to“Handbook of Technical Standards for Testing and Assessment of Health Food in China”,the laxative effects of banana oligosaccharides( BOS) were studied. Results showed that the ink- impelling ratio of the small intestine in four BOS- dose groups was significantly greater than that in the model group,and the time of the first ink defecation was shorter than that in the model group significantly,suggesting that two BOS doses of two banana cultivars were effective in facilitating bowel movement. The difference between four dose groups was not significant.Effects of BOS on dejecta moisture content and small intestine moisture content showed no significant difference,indicating that defecation functions caused by BOS was not based on increasing the moisture content of dejecta and small intestine possibly.
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