Roberfroid M B, Van Loo J A, Gibson G R
Unité de Biochimie Toxicologique et Cancérologique, Department of Pharmaceutical Sciences, Université Catholique de Louvain, B1200 Brussels, Belgium.
J Nutr. 1998 Jan;128(1):11-9. doi: 10.1093/jn/128.1.11.
Research data on the bifidogenic effect of beta(2-1)fructans, which at present are commercialized in the U.S., Japan and Europe as food ingredients, are presented. These food ingredients originate from two different sources. Short-chain fructo-oligosaccharides are synthesized from sucrose and are composed of GFn [n beta(2-1) linked fructose moieties bound to a glucose molecule; 2 </= n </= 4]. The longer chain length molecule inulin is extracted with hot water from chicory roots (Cichorium intybus) and is also composed of GFn molecules (with 2 < n < 60). Oligofructose is a partial hydrolysate of inulin and is composed of GFn and Fm molecules (n and m indicate the number of fructose moieties with 2 </= n, m </= 7). All types of beta(2-1)fructans are well fermented by intestinal bacteria. For a given chain length, there is no difference in fermentation rate between GFn- and Fm-type beta-fructans. In vitro fermentation of inulin revealed that molecules with a chain length (degree of polymerization or DP) > 10 are fermented on average half as quickly as molecules with a DP < 10. All beta(2-1)fructans are bifidogenic and classified as biobiotics.
本文展示了有关β(2-1)果聚糖双歧增殖效应的研究数据，目前β(2-1)果聚糖作为食品成分在美国、日本和欧洲实现了商业化。这些食品成分来源于两种不同的来源。短链低聚果糖由蔗糖合成，由GFn组成[n个β(2-1)连接的果糖部分连接到一个葡萄糖分子上；2≤n≤4]。较长链的菊粉分子是用热水从菊苣根（菊苣）中提取的，也由GFn分子组成（2＜n＜60）。低聚果糖是菊粉的部分水解产物，由GFn和Fm分子组成（n和m表示果糖部分的数量，2≤n，m≤7）。所有类型的β(2-1)果聚糖都能被肠道细菌很好地发酵。对于给定的链长，GFn型和Fm型β-果聚糖的发酵速率没有差异。菊粉的体外发酵表明，链长（聚合度或DP）＞10的分子发酵速度平均只有DP＜10的分子的一半。所有β(2-1)果聚糖都具有双歧增殖作用，被归类为生物活性物质。
