Tailoring highland barley bran arabinoxylans: Insights into composition, structure, and functional properties
文献类型： 外文期刊
作者： Mu, Tingting 1 ; Wu, Xue 1 ; He, Yuanchen 1 ; Luo, Yueping 1 ; Zhang, Yuhong 2 ; Luo, Min 1 ; Zhang, Youe 1 ; He, Caian 1 ; Wang, Min 1 ;
作者机构： 1.Northwest A&F Univ, Coll Food Sci & Engn, Yangling 712100, Peoples R China
2.Tibet Acad Agr & Anim Husb Sci, Lhasa 850000, Peoples R China
关键词： Arabinoxylans; Highland barley bran; Structural characterization; Antioxidant properties
期刊名称：FOOD BIOSCIENCE （ 影响因子：5.9； 五年影响因子：6.1 ）
ISSN： 2212-4292
年卷期： 2024 年 62 卷
页码：
收录情况： SCI
摘要： Highland barley bran (HBB) stands as an underutilized source of arabinoxylans (AXs), presenting promising prospects for various applications. This study focuses on the isolation of four different AXs (S20, S40, S60, S80) from HBB using alkali extraction and gradient alcohol precipitation. These AXs exhibited diverse purity (56.47%-80.92%), monosaccharide compositions (A/X:0.47-0.96), and molecular weights (Mw) (173.5-498.2 kDa) of different AXs, along with different microstructural variations, amorphous qualities, and thermal stability. Rheological analyses demonstrated their shear-thinning behavior and distinctive gel-forming capacities, with S20 exhibiting superior viscosity and gel-forming ability. Notably, all four AXs demonstrate notable DPPH and ABTS radical scavenging capacities, with S80 demonstrating the highest antioxidant potency. Correlation analyses highlighted connections between molecular weight, branching degree, and rheological and antioxidant properties of AXs. Among different AXs, S20, with its low branching degree (0.47) and high molecular weight (390.4 kDa), exhibited significant viscosity, suggesting its suitability as a natural thickener in food processing. Conversely, S80, characterized by its low molecular weight (173.5 kDa), high branching degree (0.96), and potent antioxidant activity, holds promise as a natural antioxidant in functional foods. This study provides crucial insights for tailoring AX applications, unlocking the potential for the valorization of HBB in diverse scenarios.
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