甘薯渣中可溶性膳食纤维对肠道菌群代谢产物的影响
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The Effect of Soluble Dietary Fiber in Sweet Potato Residues on Intestinal Flora Metabolites
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    摘要:

    利用体外发酵技术,用酶解法将甘薯渣中的可溶性膳食纤维提取后作为体外培养肠道菌群的主要碳源,体外发酵并观察发酵液在0,6,12,24 h中的pH值、产气量、NH3-N含量的变化,在12,24,48 h分别测定发酵液中的短链脂肪酸(SCFA)含量,通过以上指标的变化来判定甘薯可溶性膳食纤维对肠道菌群代谢产物的影响。结果表明,添加甘薯可溶性膳食纤维的试验组相较于空白组能显著降低(P<0.05)发酵液的pH值,降低发酵液中的NH3-N含量,并显著提升(P<0.05)SCFA的产量,说明甘薯渣中的可溶性膳食纤维具有改善肠道菌群代谢产物的作用,有利于人体肠道健康。

    Abstract:

    This article was aimed to study the effect of soluble dietary fiber in sweet potato residue on intestinal flora by vitro fermentation. Soluble dietary fiber was extracted from sweet potato residue by using enzyme hydrolysis. Then it was used as the main carbon source of vitro cultivation of intestinal flora and to observe the pH change, gas production rate, the content of NH3-N of the fermentation liquor after 0, 6, 12 and 24 h. Short chain fatty acids (SCFA) of the fermented liquid at 12, 24, 48 h were analyzed respectively. The effects of soluble dietary fiber on intestinal flora was determined through the changes of the above indicators. Compared with the control group, results showed that the experiment group added soluble dietary fiber could significantly reduce(P<0.05) the pH of fermentation liquid, decrease the content of NH3-N in fermentation liquid, and significantly increase(P<0.05) the output of SCFA which proved that soluble dietary fiber in sweet potato residues could improve the metabolites of intestinal flora and contribute to human intestinal health.

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高美玲;余诚玮;范亚苇;邓泽元;穆松牛.甘薯渣中可溶性膳食纤维对肠道菌群代谢产物的影响[J].中国食品学报,2020,20(12):56-61

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  • 在线发布日期: 2021-01-12
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