Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Lysinoalanine in Protein Recovered from Frozen Belanger's Croaker, Johnius grypotus, Using Alkaline Processing

알칼리 처리하여 회수한 냉동깡치 어육 단백질의 Lysinoalanine 함량

  • Kim, Gun-Bae (Major in Food Biotechnology, Kunsan National University) ;
  • Lee, Keun-Woo (Major in Food Biotechnology, Kunsan National University) ;
  • Hur, Sung-Ik (Division of Marine Life Science/Institute of Marine Industry, Gyeongsang National University) ;
  • Choi, Yeung-Joon (Division of Marine Life Science/Institute of Marine Industry, Gyeongsang National University)
  • 김건배 (군산대학교 식품공학과) ;
  • 이근우 (군산대학교 식품공학과) ;
  • 허성익 (경상대학교 해양생명과학부/해양산업연구소) ;
  • 최영준 (경상대학교 해양생명과학부/해양산업연구소)
  • Published : 2007.12.31
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Abstract

The formation of lysinoalanine (LAL) in protein recovered from the belanger's croaker, Johnius grypotus, using a pH shifting process was measured by amino acid analysis. The LAL peak was detected at 49.24 min, between phenylalanine and histidine peaks in the amino acid analyzer. LAL was not detected in the fish muscle or in protein recovered using the alkaline pH shifting process. LAL was not formed in protein recovered after storage for up to 9 hrs at pH 11, but was detected in the soluble protein fraction at pH 11, followed heating at $90\;^{\circ}C$. The myosin heavy chain decreased with storage time at pH 11. The results suggest that the alkaline shifting process for recovering fish muscle protein is safe, and that no LAL forms.

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References

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