GAS CHROMATOGRAPHY;
GAS CHROMATOGRAPHY MASS SPECTROMETRY;
TAGETES;
PLANT VOLATILES;
EXTRACTIONS;
NATURAL INSECTICIDES;
MOSQUITOS;
D O I:
10.1007/BF02269705
中图分类号:
Q5 [生物化学];
学科分类号:
071010 ;
081704 ;
摘要:
Volatiles from three species of the genus tagetes, commonly called marigold have been isolated and characterized. Simultaneous steam distillation extractions (SSDE) produced consistently extracts of higher insecticidal activity than Soxhlet extractions. Methylene chloride was the best solvent. Volatiles isolated from the minutae species showed higher activity than those from patula and erecta. Comparison of extracts from the flower, foliage and roots of the plant showed that most of the activity is located in the flower. The volatiles are highly effective toward both larvae and adult mosquitoes.