| 啤酒中戊聚糖的测定——地衣酚-盐酸法 |
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| 引用本文： | 李胤,陆健,顾国贤. 啤酒中戊聚糖的测定——地衣酚-盐酸法[J]. 食品与发酵工业, 2003, 29(9): 35-38 |
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| 作者姓名： | 李胤 陆健 顾国贤 |
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| 作者单位： | 江南大学生物工程学院,教育部工业生物技术重点实验室,无锡,214036 |
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| 摘 要： | 研究了地衣酚 盐酸法测定啤酒及麦汁中的戊聚糖 ,探讨了实验条件 ,建立了以双波长吸光度差值的方法测定啤酒和麦汁中的戊聚糖。当参加反应的 3 0mL的溶液中木糖的含量为 0～ 2 0 0 μg时 ,反应液吸光度的变化符合比摩尔定律 ,标样的回收率在 91 9%～ 10 6 9%之间。用此法测得的市售啤酒中戊聚糖含量在 90 6～ 2 12 1mg/L之间
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| 关 键 词： | 啤酒 戊聚糖 地衣酚-盐酸法 |
Orcinol Hydrochloric Acid Method for Determination of Pentosans in Beer |
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| Li Yin Lu Jian Gu Guoxian. Orcinol Hydrochloric Acid Method for Determination of Pentosans in Beer[J]. Food and Fermentation Industries, 2003, 29(9): 35-38 |
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| Authors: | Li Yin Lu Jian Gu Guoxian |
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| Abstract: | The orcinol hydrochloric acid method for determination of pentosans in beer and wort was studied in this paper. By discussing different conditions, we established a method for determination of pentosans by the absorbance difference between 670 and 580?nm. 3.0?mL of solution mixed with orcinol hydrochloric acid forms a colored complex system, which goes in agree with Beer's law. The recovery rate by using this method was within 91.9%～106.9%. Pentosans content in beer ranged from 906?mg/L to 2?121?mg/L. |
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| Keywords: | beer pentosans orcinol hydrochloric acid method |
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