不同干燥方式对杜仲叶4种活性成分含量的影响
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篇名: 不同干燥方式对杜仲叶4种活性成分含量的影响
TITLE:
摘要: 目的:考察不同干燥方式对杜仲叶中活性成分含量的影响,为建立杜仲叶在产地采收后的干燥加工方式提供参考。方法:取杜仲叶采用不同干燥方法[自然阴干72 h、自然晒干36 h、烘干(60 ℃ 6 h、80 ℃ 2 h、100 ℃ 1 h、120 ℃ 0.5 h)、微波真空冷冻干燥12 h、真空冷冻干燥12 h]对杜仲叶进行处理;采用高效液相色谱法同时测定样品中桃叶珊瑚苷、京尼平苷酸、绿原酸、京尼平苷的含量,并与未处理的鲜品进行比较。结果:2种冷冻干燥后的样品与鲜品中的4种成分含量接近,并高于其他干燥方式处理的样品。结论:干燥方法对杜仲叶有效成分具有较显著的影响,微波真空冷冻干燥和真空冷冻干燥较自然阴干、自然晒干、烘干更能保留杜仲鲜叶中的活性成分。
ABSTRACT: OBJECTIVE: To investigate the effects of different drying methods on contents of active ingredients in leaves of Eucommia ulmoides, and provide reference for establishing its drying methods after habitat harvesting. METHODS: Different drying methods [natural drying in the shade for 72 h, natural drying in the sunlight for 36 h, drying beside or over a fire (60 ℃ 6 h, 80 ℃ 2 h, 100 ℃ 1 h, 120 ℃ 0.5 h), microwave vacuum freeze drying for 12 h, vacuum freeze drying for 12 h] were used for processing. HPLC was conducted to determine the contents of aucubin, geniposidic acid, chlorogenic acid and geniposide in samples and compare with the untreated fresh products. RESULTS: Contents of 4 ingredients in samples after the 2 freeze drying were close to these in fresh samples, which were higher than samples after other drying. CONCLUSIONS: Drying methods show significant effects on the effective ingredients in leaves of E. ulmoides. Compared with natural drying in the shade and natural drying sunlight and drying beside or over a fire, microwave vacuum freeze drying and vacuum freeze drying can make better retention of the active ingredients in fresh leaves of E. ulmoides.
期刊: 2017年第28卷第28期
作者: 郑艳萍,潘艳琼,秦昆明,徐虹
AUTHORS: ZHENG Yanping,PAN Yanqiong,QIN Kunming,XU Hong
关键字: 杜仲叶;桃叶珊瑚苷;京尼平苷酸;绿原酸;京尼平苷;干燥方式;微波真空冷冻干燥;真空冷冻干燥
KEYWORDS: Leaves of Eucommia ulmoides; Aucubin; Geniposidic acid; Chlorogenic acid; Geniposide; Drying method; Microwave vacuum freeze drying; Vacuum freeze drying
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