茶叶中咖啡因的提取实验装置的改进与探索
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吴云英,谢建新,伍贤学,陈文静,苟高章
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Improvement and Exploration of Experimental Setup for Extraction of Caffeine from Tea
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Yunying WU,Jianxin XIE,Xianxue WU,Wenjing CHEN,Gaozhang GOU
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表1 两种装置提取1 h的实验结果比较
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| | 平行次数 | 提取时间/h | 首次虹吸用时/min | 总虹吸次数/次 | 虹吸一次平均用时/min | 提取筒上部温度/℃ | 提取筒中部温度/℃ | 提取筒下部温度/℃ | 咖啡因质量/g | 提取率/% | 平均提取率/% | | 原索氏提取器 | 1 | 1 | 20 | 7 | 8.6 | 60 | 58 | 61 | 0.0583 | 0.583 | 0.5817 | | 2 | 1 | 19 | 8 | 7.5 | 61 | 58 | 61 | 0.0575 | 0.575 | | 3 | 1 | 18 | 8 | 7.5 | 60 | 59 | 60 | 0.0587 | 0.587 | | 改进索氏提取器 | 1 | 1 | 15 | 9 | 6.7 | 67 | 67 | 68 | 0.0646 | 0.646 | 0.6497 | | 2 | 1 | 15 | 10 | 6.0 | 67 | 68 | 68 | 0.0649 | 0.649 | | 3 | 1 | 14 | 10 | 6.0 | 68 | 68 | 68 | 0.0654 | 0.654 |
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