Behall K M
Diet and Human Performance Laboratory, Beltsville Human Nutrition Research Center, United States Department of Agriculture, Maryland 20705-2350, USA.
Ann N Y Acad Sci. 1997 May 23;819:142-54. doi: 10.1111/j.1749-6632.1997.tb51805.x.
The wide array of low-fat foods containing soluble fibers have the potential for helping in weight loss or weight control. Consumption of soluble fibers in sufficient quantities has been shown to lower serum lipid concentrations and to improve glycemic response. Some individuals could, eventually, consume a significant portion of their soluble dietary fiber from processed foods containing soluble-fiber fat substitutes. Changes in dietary fiber and starch sources increase the amount of fermentable material reaching the colon. Short-chain fatty acids thus produced are used as an energy source by colonocytes and may inhibit hepatic cholesterol synthesis. However, colonic fermentation can also result in flatulence or diarrhea. In addition, some diets high in soluble fiber have been shown to change intestinal cell morphology in rats. The possible benefits from consumption of a diet high in soluble fiber fat substitutes in serum lipid reduction, glycemic response improvement, and/or weight reduction as well as potential problems in flatulence, mineral absorption, and colonic cell hyperproliferation should be investigated.
大量含有可溶性纤维的低脂食品有帮助减肥或控制体重的潜力。已表明足量摄入可溶性纤维可降低血脂浓度并改善血糖反应。最终，一些人可能会从含有可溶性纤维脂肪替代品的加工食品中摄取很大一部分可溶性膳食纤维。膳食纤维和淀粉来源的变化会增加到达结肠的可发酵物质的量。由此产生的短链脂肪酸被结肠细胞用作能量来源，并可能抑制肝脏胆固醇的合成。然而，结肠发酵也可能导致肠胃胀气或腹泻。此外，一些高可溶性纤维饮食已被证明会改变大鼠的肠道细胞形态。应研究食用富含可溶性纤维脂肪替代品的饮食在降低血脂、改善血糖反应和/或减轻体重方面可能带来的益处，以及在肠胃胀气、矿物质吸收和结肠细胞过度增殖方面的潜在问题。
