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Enzymatic Cross-Linking of Alkali Extracted Arabinoxylans: Gel Rheological and Structural Characteristics

机译:碱提取的阿拉伯木聚糖的酶促交联:凝胶流变学和结构特征

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摘要

Ferulated arabinoxylans were alkali-extracted from wheat bran at different incubation times (0.0, 0.5, 1.0, 1.5 and 2.0 h). Wheat bran ferulated arabinoxylans (WBAX) arabinose-to-xylose ratio, ferulic acid content, intrinsic viscosity and viscosimetric molecular weight values decreased as the incubation time of extraction increased. WBAX enzymatic cross-linking capability was affected by incubation time while an increase in WBAX concentration from 5 to 6% (w/v) favored gelation. The WBAX gels formed presented a macroporous structure with mesh size ranging from 40 to 119 nm and hardness values varying from 1.7 to 5 N.
机译:在不同的孵育时间(0.0、0.5、1.0、1.5和2.0 h)从麦麸中碱提取提取的阿拉伯木聚糖。随着提取时间的延长,麦麸中阿拉伯糖基木聚糖(WBAX)的阿拉伯糖与木糖比,阿魏酸含量,特性粘度和粘度分子量值降低。 WBAX酶促交联能力受孵育时间的影响,而WBAX浓度从5增加到6%(w / v)则有助于凝胶化。形成的WBAX凝胶呈现出大孔结构,其网眼尺寸范围为40至119 nm,硬度值范围为1.7至5N。

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