GC-MS Analysis of Fatty Acid Components of Black Soldier Fly Larvae Fed on Kitchen Waste at Different Ages

Black soldier fly larvae, as a biological converter of organic waste, can efficiently and safely degrade kitchen waste, convert it into their own nutrients, and realize the resource utilization of kitchen waste. Since the content of crude oil in black soldier fly larvae accounts for more than 35% of the dry weight of insects, the oil of larvae in the fifth instar and prepupal stage is used as the test raw material, with reference to the national standard GB5009.168-2016 fatty acids were extracted and methylated with methanol solution, Gas chromatography-mass spectrometry was used. The results showed that the main chemical components of the esterification products of the fifth instar insect oil were oleic acid, palmitic acid and lauric acid, and the three fatty acids accounted for 66.27%, 17.23% and 11.39% of the total respectively. The main chemical components were methyl laurate, methyl oleate, methyl linoleate and methyl palmitate. The four fatty acids accounted for 46.62%, 17.88%, 17.42% and 13.23% respectively.