PDF(Pubmed)
Abstract：
Arabinoxylans (AXs) are non-starch polysaccharides with complex structures naturally occurring in grains (i.e., barley, corn, and others), providing many health benefits, especially as prebiotics. AXs can be classified as water-extractable (WEAX) and water-unextractable (WUAX) based on their solubility, with properties influenced by grain sources and extraction methods. Numerous studies show that AXs exert an important health impact, including glucose and lipid metabolism regulation and immune system enhancement, which is induced by the interactions between AXs and the gut microbiota. Recent research underscores the dependence of AX physiological effects on structure, advocating for a deeper understanding of structure-activity relationships. While systematic studies on WEAX are prevalent, knowledge gaps persist regarding WUAX, despite its higher grain abundance. Thus, this review reports recent data on WUAX structural properties (chemical structure, branching, and MW) in cereals under different treatments. It discusses WUAX applications in baking and the benefits deriving from gut fermentation.
摘要：
阿拉伯木聚糖（AXs）是天然存在于谷物中的具有复杂结构的非淀粉多糖（即，大麦,玉米,和其他)，提供许多健康益处，尤其是作为益生元。AXs可根据其溶解度分为水可萃取（WEAX）和水不可萃取（WUAX）。其性质受谷物来源和提取方法的影响。大量研究表明，AXs发挥重要的健康影响，包括葡萄糖和脂质代谢调节和免疫系统增强，这是由AXs和肠道微生物群之间的相互作用诱导的。最近的研究强调了AX生理效应对结构的依赖性，倡导对结构-活动关系有更深入的理解。虽然关于WEAX的系统研究很普遍，关于WUAX的知识差距仍然存在，尽管谷物丰度较高。因此，这篇评论报告了WUAX结构性质的最新数据(化学结构，分支，和MW）在不同处理下的谷物中。它讨论了WUAX在烘焙中的应用以及肠道发酵的好处。
