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首页> 外文会议>International Conference on Food Science and Technology(ICFST) vol.1; 20031022-24; Wuxi(CN) >Studies on Water-Extractable Arabinoxylans in Malt, Wort and Beer
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Studies on Water-Extractable Arabinoxylans in Malt, Wort and Beer

机译：麦芽，麦芽汁和啤酒中水可提取的阿拉伯木聚糖的研究

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摘要

The most important non-starch polysaccharides in barley grain are β-glucan and ar-abinoxylans. Arabinoxylans are partially water-extractable, high-molecular-weight polymers that contribute to viscosity and membrane filterability. Arabinoxylans contents of malt, wort, and beer were estimated by gas chromatography (GC) of the composing neutral sugars after hydrolysis and derivatization. A study was made of six barley malt to determine the composition of total arabinoxylans and water-extractable arabinoxylans, and to observe its changes during brewing. The water-extractable and total arabinoxylans contents of six barley malts varied between 0.21 ～ 0.35% and 1.70 ～ 2.34%, respectively. Their L-arabinose-to-D-xylose ratio ranged between 0.49 ～ 0. 59 (total arabinoxylans) and 0.72 ～ 0.85 (water-extractable arabinoxylans). Contents of arabinoxylans in worts represented 0.50 ～ 0.93% of the barley malt. The use of rice adjunct decreased arabinoxylans contents of wort and beer.
机译：大麦籽粒中最重要的非淀粉多糖是β-葡聚糖和ar-Abinoxylans。阿拉伯木聚糖是部分可水萃取的高分子量聚合物，有助于粘度和膜过滤性。水解和衍生化后的组成中性糖的气相色谱（GC）估算麦芽，麦芽汁和啤酒中阿拉伯木聚糖的含量。对六种大麦麦芽进行了研究，以确定总阿拉伯木聚糖和水提取性阿拉伯木聚糖的组成，并观察其在酿造过程中的变化。六个大麦芽的水提取性和总阿拉伯木聚糖含量分别在0.21〜0.35％和1.70〜2.34％之间变化。它们的L-阿拉伯糖与D-木糖之比在0.49〜0。59（总阿拉伯木聚糖）和0.72〜0.85（水提取性阿拉伯木聚糖）之间。麦芽汁中阿拉伯木聚糖的含量占大麦芽的0.50〜0.93％。大米的使用降低了麦芽汁和啤酒中阿拉伯木聚糖的含量。

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