Fatty Acid and Volatile Oil Compositions of Allomyrina dichotoma Larvae.
Thirty-two different volatile oils were identified from Allomyrina dichotoma (A. dichotoma) larvae by gas chromatography/mass spectrometry (GC/MS). The major volatile components were 2,2,4-trimethyl-3-carboxyisopropyl pentanoic acid isobutyl ester (5.83%), phenol,2,6-bis(a,a-dimethyl ethyl)-4-(1-methyl-1-phenylethyl) (5.72%), heptacosane (5.49%) and phenol,2,4-bis(1-methyl-1-phenylethyl) (5.47%). The composition of the fatty acids in A. dichotoma larvae was also determined by gas chromatography (GC) and fourteen constituents were identified. Oleic acid (19.13%) was the most abundant fatty acid followed by palmitic acid (12.52%), palmitoleic acid (3.71%) and linoleic acid (2.08%) in 100 g of A. dichotoma larvae on a dry weight basis. The quantity of unsaturated fatty acids (64.00%) were higher than that of saturated ones (36.00%). The predominant fatty acids in A. dichotoma consist of monounsaturated fatty acid (MUFA, 57.70%) such as oleic acid, myristoleic acid and palmitoleic acid, followed by saturated fatty acids (36.00%) and polyunsaturated fatty acids (PUFA, 6.50%). In particular, the presence of essential fatty acids, such as linoleic (5.30%) and linolenic acid (0.40%) give A. dichotoma larvae considerable nutritional and functional value and it may be a useful source for food and/or industrial utilization.
Department of Food Science & Nutrition, Dong-A University, Busan 604-714, Korea.
Kumju
K
Youn
Department of Food Science & Nutrition, Dong-A University, Busan 604-714, Korea.
Ji-Young
JY
Kim
Department of Food Science & Nutrition, Dong-A University, Busan 604-714, Korea.
Hyelim
H
Yeo
Department of Agricultural Biology, National Academy of Agricultural Science, RDA, Gyeonggi 441-100, Korea.
Eun-Young
EY
Yun
Department of Agricultural Biology, National Academy of Agricultural Science, RDA, Gyeonggi 441-100, Korea.
Jae-Sam
JS
Hwang
Department of Food Science & Nutrition, Dong-A University, Busan 604-714, Korea.
Mira
M
Jun
Allomyrina dichotoma; GC; GC/MS; SDE; fatty acids; volatile oils