자연산 뱀장어의 채집지역 및 크기에 따른 체성분의 영양학적 특성

Nutritional Properties of Body Composition Based on Captured Location and Size in Wild Eels, Anguilla japonica

  • 전민지 (부경대학교 사료영양연구소) ;
  • 한경민 (부경대학교 사료영양연구소) ;
  • 유진형 (부경대학교 사료영양연구소) ;
  • 이계안 (부경대학교 사료영양연구소) ;
  • 배승철 (부경대학교 사료영양연구소)
  • 발행 : 2003.11.01

초록

본 연구에서는 자연산 뱀장어의 지역과 어체중에 따른 영양학적 특성을 분석하여 비교함으로써 양식산 뱀장어의 사육시 영양학적 기준으로 삼고자 한다. 자연산 뱀장어가 많이 채포되는 경남 사천만과 인접한 경호강과 전남 고성의 인천강의 하구에서 100 g 이하 그룹(고창: 75.8$\pm$17.6 g, 사천: 89.3$\pm$6.42 g)과 200 g 이상 그룹(고창: 215$\pm$8.95 g, 사천: 236$\pm$11.7 g)으로 나누어 체조성의 영양학적 특성에 대해 조사하였다. 수분 함량 63∼72%, 조단백질 16∼20%, 조지방 6.1∼15.4%, 조회분 2.2∼2.8%로 나타났다. 이 중 수분과 조지방의 함량은 채집 지역에 따라 유의한 차이를 나타내었다(P<0.05). 지방산 분석에서 포화지방산은 38.0∼43.0%, 단순불포화지방산 51.5∼58.5%, 고도불포화지방산 1.95∼4.12%, n-3 PUFA 0.68∼1.53%로 나타내었으며, 채집지역에 따라 유의한 차이를 보였다(P<0.05). 필수아미노산은 7.11∼12.5%, 비필수아미노산은 8.34∼12.9%으로 나타내었으나, 채집 지역에 따라 유의한 차이를 보이지 않았으며(P>0.05), 어체중에 따라서는 대부분의 필수 아미노산과 비필수 아미노산 함량이 유의한 차이를 나타내었다(P<0.05). 따라서 고창지역과 사천지역에서 채집한 뱀장어의 일반성분, 지방산, 아미노산의 함량은 채집된 지역과 어체중과 상관관계를 보이는 것으로 나타났다.

The present study provides nutritional characteristics of body composition based on the different collected locations and body sizes in wild eels, Anguilla japonica. Eels were collected in Kyungho river, near the Sachun bay (Gyeongnam) and Inchun river, near Gochang, Jeonnam. Eels were divided by size into the following groups: less than 100 g (Gochang: 75.8$\pm$17.6 g, Sachun: 89.3$\pm$6.42 g) and more than 200 g group (Gochang: 215$\pm$8.95 g, Sachun: 236$\pm$11.7 g). The moisture content of individuals in Gochang area (Gw) was higher than that in Sacheon area (Sw). In the results of proximate analysis, the ranges of moisture, crude protein, crude fat, and crude ash were 63∼72, 16∼20, 6.1∼15.4 and 2.2∼2.8%, respectively. Moisture and crude fat were significantly different (P<0.05) based on the captured locations. In fatty acid composition, the ranges of saturates, monoenes, polyenes, and n-3 PUFA content were 38.0∼48.0, 51.5∼58.5, 1.95∼4.12 and 0.68∼1.53%, respectively. It was significantly different (P<0.05) based on the captured locations. In the amino acid composition, the ranges of essential and non-essential amino acids were 7.11∼12.5 and 8.34∼ 12.9%, respectively. These values were not significantly different (P>0.05) based on the captured locations, however these were significant different (P<0.05) based on their body weight. Therefore, these results indicated that the different body composition depends on the different captured locations and body sizes. Furthermore, it is necessary to examine more varied locations and body sizes for their body composition in eels.

키워드

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