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首页> 外文期刊>Food & Nutrition Research >A water-soluble fraction from a by-product of wheat increases the formation of propionic acid in rats compared with diets based on other by-product fractions and oligofructose
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A water-soluble fraction from a by-product of wheat increases the formation of propionic acid in rats compared with diets based on other by-product fractions and oligofructose

机译:与基于其他副产物级分和低聚果糖的饮食相比,来自小麦副产物的水溶性级分增加了大鼠丙酸的形成。

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Background: Dietary fibre is fermented by the colonic microbiota to carboxylic acids (CA), with potential health effects associated in particular with butyric and propionic acid.Objective: To investigate the formation of CA in the hindgut of healthy rats fed dietary fibre from different fractions of wheat shorts, a by-product of the milling of wheat.Design: Rats were fed dietary fibre (80 g/kg feed per day for 7 days) from wheat shorts and fractions thereof (ethanol-soluble, water-soluble and insoluble fractions), oligofructose (OF) diet and a mixture of oligofructose and raffinose (OR) diet.Results: The water-soluble fraction, with a high content of arabinoxylan (AX), increased the formation of propionic acid in the hindgut and lowered the ratio of acetic to propionic acid in the portal blood of rats. High levels and proportions of butyric acid were seen in rats fed the OR diet. The pattern of CA resulting from the ethanol-soluble diet, mainly composed of fructan and raffinose, was more similar to that of the OF diet than the OR diet.Conclusions: The high formation of propionic acid with the water-soluble fraction may be attributed to the high AX content. The results also indicate that the wheat fructans produced more propionic acid and less butyric acid than OF. It may furthermore be speculated that the formation of butyric acid associated with the OR diet was due to a synergetic effect of OR.
机译:背景:膳食纤维被结肠菌群发酵成羧酸(CA),对健康有潜在的影响,尤其是与丁酸和丙酸有关。目的:研究不同分量膳食纤维喂养的健康大鼠后肠中CA的形成。设计:大鼠从小麦短裤及其馏分(溶于乙醇,水溶性和不溶性馏分)中摄取膳食纤维(每天80 g / kg饲料,共7天) ),低聚果糖(OF)饮食以及低聚果糖和棉子糖(OR)饮食的混合物。结果:阿拉伯果聚糖(AX)含量高的水溶性部分增加了后肠中丙酸的形成并降低了比例乙酸在大鼠门静脉血中的含量喂OR饮食的大鼠中见到高水平和高比例的丁酸。乙醇可溶性饮食(主要由果聚糖和棉子糖组成)形成的CA模式与OR饮食相比,OR饮食与OF饮食更为相似。结论:丙酸与水溶性部分的高形成可能是由于高AX含量。结果还表明,小麦果聚糖比OF产生更多的丙酸和更少的丁酸。还可以推测与OR饮食相关的丁酸的形成是由于OR的协同作用。

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