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摘要
Objective: Through analyzing the effects of different drying methods (sun drying, shade drying, low-temperature drying, drying after steaming processing) on the volatile compounds of Jinyinhua (Lonicerae Japonicae Flos, LJF), the optimal drying method for retaining volatile compounds of LJF was obtained. Methods: Gas chromatography-ion mobility spectrometry (GC-IMS) was used to analyze the volatile compounds in LJF with different drying methods, and the differences were analyzed. Results: A total of 48 volatile compounds were identified in LJF with the four drying methods, including aldehydes (14), alcohols (10), ketones (5), pyrazines (6), pyrroles (1), furans (2), esters (5), acids (2) and others (3). Tirty-four differential volatile components were found by significant difference test. The types of volatile components were more abundant by sun drying method, and the total content was higher. The types of volatile components were the least by drying after steaming processing method, and the total content was lower. The difference between shade drying and low-temperature drying methods was small. The ability of these two methods to retain volatile compounds was better than that of the drying after steaming processing method, but weaker than the sun drying method. Conclusion: In the study, obvious differences were found in volatile compounds of LJF with different drying methods. And the sun drying method is the best for retaining volatile compounds and flavor of LJF. The research results can provide scientific and theoretical guidance for the study of the optimization of drying methods, the fragrance and health effects and the flavor quality of LJF. ? 2022, Editorial Office of Chinese Traditional and Herbal Drugs. All right reserved.
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