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KMID : 1160620130180020150
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Preventive Nutrition and Food Science
2013 Volume.18 No. 2 p.150 ~ p.156
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Fatty Acid Composition and Volatile Constituents of Protaetia brevitarsis Larvae
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Yeo Hye-Lim
Youn Kum-Ju
Kim Min-Ji
Yun Eun-Young
Hwang Jae-Sam
Jeong Woo-Sik
Jun Mi-Ra
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Abstract
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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 g-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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KEYWORD
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Protaetia brevitarsis, fatty acid, volatile oil, simultaneous distillation extraction (SDE), GC, GC/MS
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