earticle

영어

The components of the 5th instar 3rd day silkworms (male) and the 14th day silkworm pupa (male/female) were extracted with ethanol, ethyl acetate, and chloroform as the solvents. The extractions were proceeded with 2 steps ; the 1st extraction with ethanol and ethyl acetate respectively, the 2nd extraction with chloroform followed by the 1st extraction. The components of the extracts were analyzed with GC/MS. In the 1st extraction the yields and components of the extracts with ethanol were higher than that with ethyl acetate, and the 2nd extraction gave more the yields and components of extracts than that of the 1st extraction. In all the experimental procedures palmitic acid, oleic acid, linoleic acid, and stearic acid were detected, and the content of the fatty acids increased in sequence of stearic acid, linoleic acid, oleic acid, and palmitic acid. The contents of the fatty acids of the male pupa at the age of 14 days gave about two times more than that of the female pupa with 14 days.