Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)
- Volume 29 Issue 3
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- Pages.357-368
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- 1996
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
Quality Improvement of Rainbow Trout with Pigments and Enzymatic Hydrolysates of Ascidian (Halocynthia roretzi) Tunic 2. Effect of Ascidian Tunic Enzymatic Hydrolysates on Pigmentation and Growth of Rainbow Trout (Oncorhynchus mykiss)
우렁쉥이 껍질의 색소 및 효소 가수분해물을 이용한 무지개 송어의 품질 향상 2. 우렁쉥이 껍질의 효소 가수분해물이 무지개 송어의 착색 및 성장에 미치는 효과
- KANG Seok-Joong (Department of Aquaculture, College of Fisheries, Gyeongsang National University) ;
- CHOI Byeong-Dae (Department of Food Science, College of Fisheries, Gyeongsang National University) ;
- LEE Kang-Ho (Department of Food Science and Technology, National Fisheries University of Pusan)
- Published : 1996.05.01
Abstract
To utilize the ascidian tunic as a natural pigment and dietary sources for rainbow trout (Oncorhynchus mykiss), juvenile were fed on experimental diets containing enzymatic hydrolysates of ascidian tunic treated with three commercial mined enzymes (ultrazyme, cellulase, viscozyme) for 12 weeks. From the results of feeding experiment, similar growth rate was checked in the enzymatic hydrolysis group compared with control, and those were a higher than of ascidian tunic powder group. The total acetone extractable pigment in muscle of the enzymatic hydrolysates group was lower than that of the ascidian extracts group and carophyll pink group until 8 weeks, but the level of those pigment of the enzymatic hydrolysates was similar to the ascidian extracts and carophyll pink group after 12 weeks. The lipid content was increased with the pigment concentration in the all experimental group. But the ascidian tunic pigment did not influence on the composition of the fatty acids in the muscle and liver. From the consideration of results for pigmentation, the enzymatic hydrolysates of ascidian tunic were suitable for both a natural pigment and dietary protein and carbohydrates sources as a substitute synthetic pigment for aquaculture use.
FDA에서 인공합성착색제의 사용을 금지함에 따라 천연착색제의 탐색을 위한 연구가 활발히 진행되고 있다. 양식어류의 천연착색제 개발을 목적으로 우렁쉥이 껍질성분을 이용하기 위한 연구를 실시한 결과, 우렁쉥이 껍질 색소추출물이 인공합성 착색제인 carophyll pink보다 뛰어난 성장 및 착색효과를 나타낸다는 것을 밝혔다. 한편 본 연구에서는 우렁쉥이 껍질은 동물이 소화하기 힘든 튜니신으로 구성되어 있기 때문에 색소 뿐만 아니라 우렁쉥이 껍질 전체를 직접사료에 첨가하여 이용할 수 있는 방법을 찾고자 껍질분말을 고열가압 한 시료에 다당류 분해효소를 첨가하여 분해시킨 후 이들 분해산물을 무지개송어에 급이하여 체색개선 및 성장을 검토한 결과는 다음과 같다. 1. 무지개송어 사육결과 일일성장률은 색소첨가구가 가장 높아