Fatty Acid Composition and Volatile Constituents of Protaetia brevitarsis Larvae
2013
Yeo, H.L., Dong-A University, Busan, Republic of Korea | Youn, K.J., Dong-A University, Busan, Republic of Korea | Kim, M.J., Dong-A University, Busan, Republic of Korea | Yun, E.Y., National Academy of Agricultural Science RDA, Gyeonggi, Republic of Korea | Hwang, J.S., National Academy of Agricultural Science RDA, Gyeonggi, Republic of Korea | Jeong, W.S., Inje University, Gyeongnam, Republic of Korea | Jun, M.R., Dong-A University, Busan, Republic of Korea
A total of 48 different volatile oils were identified form P. brevitarsis larvae by gas chromatography/mass spectrometry (GC/MS). Acids (48.67%) were detected as the major group in P. brevitarsis larvae comprising the largest proportion of the volatile compounds, followed by esters (19.84%), hydrocarbons (18.90%), alcohols (8.37%), miscellaneous (1.71%), aldehydes (1.35%) and terpenes (1.16%). The major volatile constituents were 9-hexadecenoic acid (16.75%), 6-octadecenoic acid (14.88%) and n-hexadecanoic acid (11.06%). The composition of fatty acid was also determined by GC analysis and 16 fatty acids were identified. The predominant fatty acids were oleic acid (C18:1, 64.24%) followed by palmitic acid (C16:0, 15.89%), palmitoleic acid (C16:1, 10.43%) and linoleic acid (C18:2, 4.69%) constituting more than 95% of total fatty acids. The distinguished characteristic of the fatty acid profile of P. brevitarsis larvae was the high proportion of unsaturated fatty acid (80.54% of total fatty acids) versus saturated fatty acids (19.46% of total fatty acids). Furthermore, small but significant amounts of linoleic, linolenic and γ-linolenic acids bestow P. brevitarsis larvae with considerable nutritional value. The novel findings of the present study provide a scientific basis for the comprehensive utilization of the insect as a nutritionally promising food source and a possibility for more effective utilization.
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