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KMID : 1024520140230020165
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Journal of the Environmental Sciences
2014 Volume.23 No. 2 p.165 ~ p.170
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Studies on the Nutritional Components and Amino Acid Compositions of Krill (Euphausia superba)
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Kim Han-Soo
Kim Min-A
Kang Dong-Soo
Jang Seong-Ho
Ryu Jae-Young
Lee Chun-Sik
Lee Won-Ki
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Abstract
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Despite abundant nutritions, krill is barely used for human consumption. The objective of this study was to investigate the nutritional component and amino acid composition of krill and further utilizes it for food resource. Proximate compositions of krill meal were consisted of crude protein 58.85%, ash 13.89%, crude fat 12.45%, carbohydrate 11.01% and moisture 3.80%. The amount of total amino acid was 54.74 g%, and the major amino acids were glutamic acid (7.71 g%), aspartic acid (6.20 g%), leucine (4.72 g%), lysine (4.41 g%), arginine (6.49 g%) and alanine (3.25 g%), respectively. Total essential amino acid content was 21.87%, and the major amino acids were leucine (4.72 g%), lysine (4.41 g%) and isoleucine (2.90 g%), respectively. Content of total free amino acid in krill meal was 20224.30 mg/kg, and the major free amino acids were taurine (4501 mg/kg), arginine (3130.60 mg/kg), proline (2302.90 mg/kg), alanine (2088.10 mg/kg), glycine (1606.40 mg/kg) and lysine (1197.40 mg/kg). Especially, taurine was the most abundant of all free amino acids. Thus, these data indicate that krill seems to be abundant protein source food.
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KEYWORD
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Krill (Euphausia superba), Nutritional component, Amino acid composition
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