Study on the volatile components of Epimedium extract and its pyrolysis products
Objective:To investigate the flavor components of Epimedium extract and analyze pyrolysis products of the extracts from Epimedium.Methods:Ultra fast gas phase electronic nose was adopted to analyze volatile com-ponents in ethanol extracts of Epimedium and the alcohol extracting process of Epimedium was optimized by orthog-onal experiment.Epimedium extract was pyrolysed to simulate cigarette smoking by TG-GC-MS.The lysates of Epimedium extract were analysed in a nitrogen environment,and the possible lysate mechanism of the products was reasonably speculated.Results:22 volatile components were detected in the ethanol extracts of Epimedium at different concentrations.Concentration of Epimedium extracted with 60％ethanol was superior than others.Analy-zing pyrolysis products of Epimedium extract,78 compounds were identified at 150,300 and 450 ℃,including aldehydes,ketones,alcohols,phenols,furans and benzene series.Conclusion:Ethanol extraction of Epimedium contains many aromatic volatile components.A large number of ketones,alcohols,phenols,furans and other volatile aroma compounds are produced after pyrolysis of Epimedium extract.
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