Effects of Different Drying Methods on Contents of 4 Active Ingredients in Leaves of Eucommia ulmoides
10.6039/j.issn.1001-0408.2017.28.23
- VernacularTitle:不同干燥方式对杜仲叶4种活性成分含量的影响
- Author:
Yanping ZHENG
1
;
Yanqiong PAN
;
Kunming QIN
;
Hong XU
Author Information
1. 南京海昌中药集团有限公司
- Keywords:
Leaves of Eucommia ulmoides;
Aucubin;
Geniposidic acid;
Chlorogenic acid;
Geniposide;
Drying method;
Mi-crowave vacuum freeze drying;
Vacuum freeze drying
- From:
China Pharmacy
2017;28(28):3973-3976
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To investigate the effects of different drying methods on contents of active ingredients in leaves of Eu-commia 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 process-ing. 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 ef-fects 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.
