붕장어(Conger myriaster)의 일반성분 및 맛 성분의 계절별 변화 분석

Conger eel (Conger myriaster) is used as a well-being food in the foodservice industry in Korea. We analyzed not only the proximate composition but also the taste components affecting conger eel, which are fatty acids, nucleotides, amino acids, etc. Concerning the composition, the crude lipid was the lowest in summer at 3.2%, which is considered due to spawning period. The major fatty acids were C16:0, C16:1, C18:0, C18:1, C20:5, and C22:6. The C18:1 content was the highest among the fatty acids and the content varied between 36.76 and 45.11% by season. Seasonal change in the content of poly-unsaturated fatty acids was increased from spring to winter in conger eel. Among the nucleotides, the contents of IMP (3.617~5.524 μ㏖/g) and Hx (0.913~2.238 μ㏖/g), which is closely related to taste, and the concentrations of IMP and Hx were the highest (7.219 μ㏖/g) in winter, and HxR (0.625~1.652 μ㏖/g) was higher than ATP (0.058~0.083 μ㏖/g), ADP (0.145~0.161 μ㏖/g), and AMP (0.166~0.179 μ㏖/g). In conger eels, the major total and free amino acids were glutamic acid (14,178.7~7,802.6 ㎎%), aspartic acid (4,669.2~8,259.0 ㎎%), lysine (4,198.3~7,540.8 ㎎%), leucine (3,843.6 ~6,782.1 ㎎%), and histidine (199.6~644.4 ㎎%), glycine (94.8~152.2 ㎎%), alanine (35.3~71.2 ㎎%), glutamic acid (44.1~70.6 ㎎%), respectively, but the concentration of amino acids was different by season. The content of free amino acids, which is related to the taste component, was detected as high in summer and winter at 1179.2 and 1,605.2 ㎎%, respectively.