Metabolism of Dietary Carotenoids and Effects to Improve the Body Color of Cultured Flounder and Red sea bream

양식 넙치, 참돔의 사료 Carotenoids 대사와 체색개선에 미치는 영향

  • HA Bong-Seuk (Department of Food and Nutrition, Gyeongsang National University) ;
  • KANG Dong-Soo (Department of Food and Nutrition, Gyeongsang National University) ;
  • KIM Jong-Hyun (Department of Food and Nutrition, Changwon Junior College) ;
  • CHOI Ok-Soo (Department of Food and Nutrition, Gyeongsang National University) ;
  • RYU Ho-Young (Namhae Fisheries Hatchery, National Fisheries Research and Development Agency)
  • 하봉석 (경상대학교 식품영양학과) ;
  • 강동수 (경상대학교 식품영양학과) ;
  • 김종현 (창원전문대학 식품영양학과) ;
  • 최옥수 (경상대학교 식품영양학과) ;
  • 유호영 (국립수산진흥원 남해수산종묘배양장)
  • Published : 1993.03.01

Abstract

To investigate the effects on pigmentation and carotenoid metabolism of red sea breams Pagrus major and flounders Paralichithys olivaceus by the supplemented carotenoids, fishes wire fed the diet each containing ${\beta}$-carotene, lutein ester, astaxanthin, astaxanthin monoester, astaxanthin diester and ${\beta}$-apo-8'-carotenal for 8 weeks. Carotenoids in the integuments were analyzed. In cultured red sea breams with supplemented carotenoids, carotenoid deposition and pigmentation were higher in order of astaxanthin diester group, ${\beta}$-apo-8'-carotenal group and astaxanthin monoester group. The main carotenoids of red sea breams were astaxanthin diester, tunaxanthin and ${\beta}$-carotene. Difference in the content of astaxanthin diester and ${\beta}$-carotene was observed from natural and cultured red sea breams. In cultured flounders with supplemented carotenoids, carotenoid deposition and pigmentation were higher in order of ${\beta}$-carotene group and lutein ester group. The main carotenoids of flounders were zeaxanthin and lutein. Difference in lutein and ${\beta}$-carotene contents was observed from the natural and cultured flounders. Based on the contents and composition of carotenoids in each group after feeding experimental diet, carotenoid metabolism in red sea breams were presumed the reductive metabolic pathway, astaxanthin to tunaxanthin, and likewise, in flounders, lutein to tunaxanthin.

양식 참돔과 넙치에 대한 사료 carotenoid의 대사와 체색개선에 미치는 영향을 검토하기 위하여 ${\beta}$-carotene, lutein ester, astaxanthin 및 ${\beta}$-apo-8'-carotenal을 각각 첨가한 사료로서 8주간 사육한 결과는 다음과 같다. 1) 참돔에 있어서 carotenoid 축적율은 astaxanthin diester 첨가구에서 가장 높게 나타나 체색개선 효과가 가장 컸었으며, ${\beta}$-apo-8'-carotenal, astaxanthin monoester 첨가구의 순으로 효과가 컸었다. 2) 참돔의 carotenoid 대사경로는 astaxanthin이 tunaxanthin으로 되는 환원적 대사과정을 가지는 것으로 추정되었다. 3) 참돔 표피의 carotenoid 색소는 astaxanthin diester, tunaxanthin 및 ${\beta}$-carotene이 주성분을 이루고, 천연산과 양식산은 astaxanthin diester와 ${\beta}$-carotene의 함량에서 서로 차이가 있었다. 4) 넙치에 있어서 carotenoid 축적율은 ${\beta}$-carotene첨가구에서 가장 높게 나타나 체색개선 효과가 가장 컸었으며, 그 다음으로 lutein ester첨가구의 순으로 나타났다. 5) 넙치의 carotenoid 대사경로는 lutein이 tunaxanthin으로 환원대사되는 것으로 추정할 수 있었다. 6) 넙치 표피의 carotenoid 색소는 zeaxanthin, lutein이 주성분을 이루고, 천연산과 양식산은 lutein과 ${\beta}$-carotene의 함량에서 서로 차이가 있었다.

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