KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Effect of Pigmentation on Rainbow Trout Fed Carotenoid Diets from Halophilic Bacteria [Haloarcular sp. EH-1]

호염세균 [Haloarcular sp. EH-1] 카로테노이드 색소를 섭이한 무지개송어의 체색효과

  • 정영기 (동의대학교 미생물학과) ;
  • 최병대 (경상대학교 해양생물이용학부/해양산업연구소) ;
  • 강석중 (경상대학교 해양생물이용학부/해양산업연구소) ;
  • 김철우 (경상대학교 해양생물이용학부/해양산업연구소) ;
  • 김해윤 (동의대학교 미생물학과) ;
  • 정명주 (동의대학교 미생물학과)
  • Published : 2000.12.01
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Abstract

This study is aimed at evaluating the pigmentation of rainbow trout with carotenoid extracts from halophilic bacteria during 8 weeks feeding. Proximate composition of the sample were analyzed. Moisture content was 77% and 73% after 4 and 8 weeks feeding, respectively. Crude protein and lipid content was slowly increased after 8 weeks feeding. But minerals content were not affected with the feeding period and constituents. Muscle carotenoids content of rainbow trout was 0.0223 mg/100g tissue in control group after 4 weeks, and 0.1702 mg/100g tissue in carophyll pink group after 8 weeks. The carotenoids pigmentation content of halophilic bacteria extracts fed group was 0.1256, 0.1382 mg/100g tissue after 8 weeks. It means that the carotenoids of bacteria extracts are a good material for fish pigmentation. The main components of rainbow trout muscle and integuments with these diets were canthaxathin,, zeaxanthin, and ${\beta}$-carotene.

호염성 세균에서 추출한 색소를 사료에 일정량 혼합하여 사육시킨 무지개송어의 일반성분 조성 중 수분함량은 사육 4 주 후 77%, 8주 후 73% 내외였다. 조단백질의 함량은 4주 후보다 8주 후가 증가된 양상을 보였다. 조지방의 경우도 8 주 후 약간 증가하는 경향이었다. 그러나 무기질의 함량에는 큰 변화가 없었다. 무지개송어 육 중 카로테노이드 함량은 4 주 후 대조구에서 0.0223 mg/100g인 반면, 8주 후 pink구에 서는 0.1702 mg/100g으로 대조구에 비하여 색소 첨가구에서 의 함량이 높게 나타났다. 세균 색소추출물의 첨가구는 8주 후 0.1256, 0.1382 mg/100g으로, pink구나 우렁행이 껍질 색 소추출물구 0.1702, 0.1514 mg/100g에 비하여 색소함량이 다 소 낮았지만 색소침착올 저해하는 경향은 아니었다. 무지개 송어 육 중 축적되는 색소의 조성은 급이 되는 사료의 조성 에 따라 차이가 있지만 사육 4 및 8주 후 canthaxanthin의 함 량이 가장 높았으며, astaxanthin 챔가구는 zeaxanthin의 함량 이 가장 높았다. 그리고 표피 중의 색소 조성비는 급이 4 및 8주 후 P -carotene의 함량이 가장 높았고, canthaxanthin의 함 량은 낮아 육 및 표피 중의 색소침착은 급이되는 먹이의 카 로테노이드 조성에 따라 달랐으며, 세균 색소추출물의 첨가도 무지개송어 체색개선에 도움이 되는 것으로 나타났다.

Keywords

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