| 甘草酸脱色优化工艺研究 |
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| 引用本文： | 史高峰,周宝华,陈学福.甘草酸脱色优化工艺研究[J].食品工业科技,2011(9):319-321,324. |
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| 作者姓名： | 史高峰 周宝华 陈学福 |
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| 作者单位： | 兰州理工大学石油化工学院,甘肃兰州,730050 |
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| 摘 要： | 为甘草酸粉末（D101纯化后）寻求一种最佳脱色工艺。用粉末活性炭对甘草酸粉末的80%乙醇水溶液进行脱色实验,通过单因素及正交实验确定最佳脱色条件。以甘草酸为标准品,采用紫外分光光度法测定甘草酸含量,采用紫外分光光度法测定脱色率。结果显示,粉末活性炭脱色的影响因素依次为：溶液pH〉活性炭加入量〉脱色温度〉脱色时间。甘草酸溶液的最大吸收波长为252nm,在此波长下,通过正交实验确定了脱色的最佳工艺条件,即溶液的pH为6、粉末活性炭的用量为4.5g/100mL乙醇水溶液、温度为80℃、时间为60min。在此工艺条件下,测得成品甘草酸中甘草酸平均含量及平均脱色率分别为95.32%和62.13%。
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| 关 键 词： | 甘草酸 脱色 粉末活性炭 |
Optimization of decoloring technique of glycyrrhizic acid |
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| SHI Gao-feng,ZHOU Bao-hua,CHEN Xue-fu.Optimization of decoloring technique of glycyrrhizic acid[J].Science and Technology of Food Industry,2011(9):319-321,324. |
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| Authors: | SHI Gao-feng ZHOU Bao-hua CHEN Xue-fu |
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| Affiliation: | SHI Gao-feng,ZHOU Bao-hua,CHEN Xue-fu(College of Petro-Chemical Engineering Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | The study aimed to seek for an optimum technology for decoloring glycyrrhizic acid.The decoloration experiment was conducted on glycyrrhizic acid in 80% alcohol solution by powdered activated carbon and the optimum decoloration condition was confirmed through single factor and orthogonal experiments.With glycyrrhizic acid as standard,the glycyrrhizic acid was determined by anthrone colorimetry and thereducing was determined by UV-spectrophotometry.The results showed that the factors influencing decoloration... |
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| Keywords: | glycyrrhizic acid decoloring powdered activated carbon |
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