양식 담수어 및 해산어의 사료 Carotenoids 대사의 비교와 체색개선에 미치는 영향

국문 초록 (Abstract)

무지개 송어, 산천어, 뱀장어, 볼락 및 우럭에 대한 사료 carotenoids의 체내대사와 체색 개선효과를 검토하기 위하여, 사료에 β-carotene, lutein, canthaxanthin, astaxanthin 및 β-apo-8’-carotenal을 각각 첨가하여 4 내지 5주간 사육하여 표피의 carotenoids 성분의 변화를 분석, 비교한 결과는 다음과 같다. 무지개 송어 표피의 carotenoids 조성은, zeaxanthin, β-carotene 및 canthaxanthin이 주성분이였으며, 그 외 lutein, isocryptoxanthin 및 salmoxanthin을 소량 성분으로 함유하며, 표피의 carotenoids 축적율은 canthaxanthin 첨가구에서 높게 나타나 체색 선명화 효과가 가장 컸으며, astaxanthin, β-carotene 첨가구의 순으로 나타났다. 무지개 송어 표피에서의 carotenoids 대사경로는, β-carotene이 isocryptoxanthin, echinenone 및 canthaxanthin을 경유하여 astaxanthin으로 lutein은 canthaxanthin으로 산화되고, canthaxanthin은 isozeaxanthin을 경유하여 β-carotene으로 환원되며 astaxanthin은 triol을 경유하여 zeaxanthin으로 환원되는 대사경로를 추정할 수 있었다. 산천어 표피의 carotenoids 조성은, zeaxanthin이 주성분이며, 그 외 triol, lutein, tunaxanthin, β-carotene, β-cryptoxanthin 및 canthaxanthin을 소량 성분으로 함유하며, 표피의 carotenoids 축적율은 canthaxanthin 첨가구에서 높게 나타나 체색 선명화 효과가 가장 컸으며, lutein, β-carotene 첨가구의 순으로 나타났다. 산천어 표피에서의 carotenoids 대사경로는, β-carotene이 zeaxanthin으로 산화되고, lutein은 tunaxanthin을 경유하여 zeaxanthin으로 환원되고, canthaxanthin은 β-carotene을 경유하여 zeaxanthin으로 산화되며 astaxanthin은 triol을 경유하여 zeaxanthin으로 환원되는 대사경로를 추정할 수 있었다. 뱀장어 표피의 carotenoids 조성은, β-carotene이 주성분이였으며, 그 외 lutein, zeaxanthin 및 β-cryptoxanthin등이 소량 성분으로 함유하며, 표피의 carotenoids 축적율은 lutein 첨가구에서 높게 나타나 체색 선명화 효과가 가장 컸었고, canthaxanthin astaxanthin 첨가구의 순으로 나타났다. 뱀장어 표피에서의 carotenoids 대사경로는, β-carotene과 lutein은 그대로 축적되며, canthaxanthin은 β-carotene으로 그리고 astaxanthin은 zeaxanthin으로 환원되는 대사경로를 추정 할 수 있었다. 볼락 표피의 carotenoids 조성은, zeaxanthin, β-carotene, tunaxanthin A, tunaxanthin B, tunaxanthin C 및 lutein이 주성분이였으며, 그 외 β-cryptoxanthin, α-cryptoxanthin, astaxanthin을 소량 성분으로 함유하며, 표피의 carotenoids 축적율은 lutein 첨가구에서 높게 나타나 체색 선명화 효과가 가장 컸으며, β-carotene, canthaxanthin 첨가구의 순으로 나타났다. 볼락 표피에서의 carotenoids의 대사경로는, β-carotene은 lutein으로 산화되며, lutein, canthaxanthin astaxanthin 및 β-apo-8'-carotenal은 zeaxanthin을 경유하여 tunaxanthin으로 각각 산화 및 환원되는 대사경로를 추정할 수 있었다. 우럭 표피의 carotenoids 조성은, β-carotene, astaxanthin 및 zeaxanthin이 주성분이였으며, 그 외 α-cryptoxanthin, β-cryptoxanthin, lutein 및 canthaxanthin을 소량 성분으로 함유하며, 표피의 carotenoids 축적율은 lutein 첨가구에서 높게 나타나 체색 선명화 효과가 가장 컸으며, canthaxanthin, β-carotene 첨가구의 순으로 나타났다. 우럭 표피에서의 carotenoids 대사경로는 β-carotene은 β-cryptoxanthin으로 산화되고, lutein은 α-cryptoxanthin을 경유하여 β-carotene으로 환원되고, canthaxanthin은 β-cryptoxanthin, zeaxanthin을 경유하여 α-cryptoxanthin으로 환원되며, astaxanthin은 isocryptoxanthin, zeaxanthin을 경유하여 tunaxanthin으로 대사되며, β-apo-8’-carotenal은 β-cryptoxanthin, zeaxanthin을 경유하여 α-cryptoxanthin으로 환원되는 대사경로를 추정할 수 있었다.

다국어 초록 (Multilingual Abstract)

Effects of dietary carotenoids were investigated on the metaboβsm and body pigmentation of rainbow trout(Salmo gairdneri), masu salmon(Oncorhynchus macrostomos), eel(Anguilla japonica), rock fish(Sebastes inermis) and black rock fish(Sebastes schlegeβ). Three weeks later after depletion, these fishes were fed diet supplemented with β-carotene, lutein, canthaxanthin', astaxanthin or β-apo-8'-carotena1 for 4 to 5 weeks, respectively. Carotenoids distributed to and changed in integument were analyzed. In the integument of rainbow trout. zeaxanthin, β-carotene and canthaxanthin were found to be the major carotenoids, while lutein, isocryptoxanthin and salmoxanthin were the minor carotenoids. In the integument of masu salmon, zeaxanthin was found to be the major carotenoids, while triol, lutein, tunaxanthin, β-carotene, β-cryptoxanthin and canthaxanthin were the minor carotenoids. In the integument of eel, β-carotene was found to be the major carotenoids, while lutein, zeaxanthin and β-cryptoxanthin were the minor carotenoids. In the integument of rock fish, zeaxanthin, β-carotene, tunaxanthin(A~C) and lutein were found to be the major carotenoids, while β-cryptoxanthin, α-cryptoxanthin and astaxanthin were the minor carotenoids. Likely in the integument of black rock fish, β-carotene, astaxanthin and zeaxanthin were found to be the major carotenoids, whereas α-cryptoxanthin, β-cryptoxanthin, lutein and canthaxanthin were the minor contributor. The efficacy of body pigmentation by the accumulation of carotenoids in the integument of rainbow trout and masu salmon were the most effectively shown in the canthaxanthin group and of eel, rock fish and black rock fish were the most effectively shown in the lutein group. Based on these results in the integument of each fish, dietary carotenoids were presumably biotransformed via oxidative and reductive pathways. In the rainbow trout, β-carotene was oxidized to astaxanthin via successively isocryptoxanthin, echinenone and canthaxanthin. Lutein was oxidized to canthaxanthin. Canthaxanthin was reduced to β-carotene via isozeaxanthin, and astaxanthin was reduced to zeaxanthin via triol. In the masu salmon, β-carotene was oxidized to zeaxanthin. Lutein was reduced to zeaxanthin via tunaxanthin. Canthaxanthin was reduced to zeaxanthin via β-carotene. and astaxanthin was reduced to zeaxanthin via triol. In the eel, β-carotene and lutein were directly deposited but canthaxanthin was reduced to β-carotene, and cholesterol lowering effect by Meju supplementation might be resulted from the modulation of fecal axanthin, astaxanthin and β-apo-8'-carotenal were oxidized and reduced to tunaxanthin via zeaxanthin. In the black roch fish, β-carotene was oxidized to β-cryptoxanthin. Lutein was reduced to β-carotene via α-cryptoxanthin. Canthaxanthin was reduced to α-cryptoxanthin via successively β-cryptoxanthin and zeaxanthin. Astaxanthin converted to tunaxanthin via isocryptoxanthin and zeaxanthin, and β-apo-8'-carotenal was reduced to α-cryptoxanthin via β-cryptoxanthin and zeaxanthin.

목차 (Table of Contents)

• Abstract
  
• 서론
  
• 재료 및 방법
  
• 결과 및 고찰
  
• 요약
  
• 감사의 글
  
• 문헌