The goals of this study were to produce the useful materials such as amino acid by subcritical water hydrolysis from supercritical extracted krill residues and to compare the results with raw krill. Subcritical water hydrolysis efficiency from raw and deoiled krill was examined over the temperature range of 200 to 280ºC, ratio of material to water for hydrolysis was 1:50 and for water-sample contact equilibration times of 5 min to decrease the decomposition of amino acids. The hydrolysis efficiencies of glycine, alanine, and valine were observed to increase with increasing water temperature, consistent with higher solubility at higher temperatures. The highest yield of amino acids in deoiled krill hydrolyzate was at 280ºC. While, the highest amino acid yield in raw krill hydrolyzate was at low temperature 200ºC. The presence of oil in the raw material may interfere the break down of peptide bond of protein by subcritical water hydrolysis at high temperature. Oil may form on complex with protein that may decrease the protein hydrolysis by subcritical water. Also, reducing sugars content was analyzed in both and the result showed that the reducing sugar yield in deoiled krill hydrolyzate was higher than that of raw krill hydrolyzate.
키워드
Subcritical water hydrolysisKrillAmino acid
저자
ABDELKADER ALI-NEHARI [ International program of fisheries sciences, Pukyong National University ]
Byung-Soo CHUN [ Dept. of Food Science & Technology, Pukyong National University ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
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