Abstract:
Volatiles in Guifei loquat flowers were extracted by the conventional steam distillation method,and subsequently,separated using GC followed by the structure identification by MS.A total of 56,61and 48 chemicals,constituting 96.27%,94.73%,and 96.08% of the total,respectively,were obtained from three extraction stages in their 1∶1water solutions.Twenty-five of the chemicals were commonly existed in all three extracts.The majority of the volatiles in the first-and second-stage extracts was aldehydes(70.19%and 60.03%,respectively)with benzaldehyde in the greatest amounts(56.01% and 50.22%,respectively).Of the volatiles in the third-stage extract,45.14% were esters and 22.28%alcohols,and the single chemical in the greatest quantity,as much as 20.4%,was l-(+)-ascorbic acid 2,6-dihexadecanoate.The results obtained should be useful for the development of essential oil extraction from loquat flowers.