Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Studies on Taste Compounds in Alaska Pollack Sikhae during Fermentation

전통 명태식해 숙성중의 정미성분에 관한 연구

  • Cha, Yong-Jun (Dept. of Food and Nutrition, Changwon National University) ;
  • Kim, So-Jung (Hanmi Perfuer & Chemical Co., Ltd.) ;
  • Kim, Eun-Jeong (Dept. of Food and Nutrition, Changwon National University) ;
  • Kim, Hun (Dept. of Food and Nutrition, Changwon National University) ;
  • cho, Woo-Jin (Dept. of Food and Nutrition, Changwon National University) ;
  • Yoo, Mi-Young (Dept. of Food Scienc and Technology, Pukyong National University)
  • 차용준 (창원대학교 식품영양학과) ;
  • 김소정 (한미향료화학) ;
  • 김은정 (창원대학교 식품영양학과) ;
  • 김훈 (창원대학교 식품영양학과) ;
  • 조우진 (창원대학교 식품영양학과) ;
  • 유미영 (부경대학교 식품생명공학부)
  • Published : 2004.11.01
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Abstract

As one of the research series for the industrialization of sikhae, this study was evaluated the taste compounds present in different temperature conditions, $5^{\circ}C$, $20^{\circ}C$ and alternating temperature (stored at $5^{\circ}C$ after 10 days fermentation at $20^{\circ}C$), respectively. The changes in proximate compositions were negligible but the amounts of total sugar decreased during fermentation. The pH of sikhae products except the product fermented at $5^{\circ}C$, decreased during fermentation and was maintained at the rage of 3.8~4.4 after 10 days. The values of acidity, VBN and amino-N gradually increased with fermentation times and with increasing temperature condition in all products. Three organic acids (lactic, citric and malic acid) were disclosed as key compounds affecting the sourness in Alaska pollack sikhae. The result of taste value revealed that 6 amino acids having sweet and umami taste (aspartic acid, glutamic acid, alanine and lysine) and bitter taste (valine and methionine) as major amino acids affecting the taste of sikhae products, and increased with fermentation times. Hypoxanthine was the main component in ATP related compounds. Amino-N was comprised more over 50% of the Ex-N in sikhae products, and followed by total creatinine-N, TMAO-N and TMA-N in that order.

명태식해의 산업화를 위한 기초자료를 제공하고자 고증 및 자문을 통하여 전통적 방법으로 명태식해를 제조한 다음 숙성온도를 $5^{\circ}C$, $20^{\circ}C$, 변온(10일간 $20^{\circ}C$에 숙성후 $5^{\circ}C$에서 저장) 구간으로 저장하면서 이화학적 및 정미성분 분석을 실시한 결과는 다음과 같다. 명태식해의 일반성분은 숙성중 큰 변화가 없었고, 전당은 5.63~13.41% 범위로 숙성기간이 경과할수록, 숙성온도가 높을수록 함량이 많이 감소하였다. pH는 $5^{\circ}C$에서 저장한 식해를 제외하고 숙성기간에 따라 감소하여 3.8~4.4 범위를 유지한 반면에 총산, 아미노질소 및 VBN함량은 숙성기간과 함께 함량이 증가하였으며 숙성온도가 높을수록 함량의 증가폭이 컸고 변온의 경우는 이러한 함량의 증가를 억제시켰다. 불휘발성유기산은 lactic, citric, malic acid의 순으로 식해의 신맛에 영향을 미쳤다. 유리아미노산(taste value로 환산한 경우)에서는 단맛과 감칠맛과 관련이 있는 aspartic acid, glutamic acid, alanine, lysine과 쓴맛을 내는 valine, methionine 등이 숙성기간에 따라 증가하였으며 hypoxanthine이 핵산관련물질의 대부분을 차지하였다. 엑스분질소(Ex-N)의 함량은 숙성기간중 277~581 mg% 범위였으며, Ex-N의 1/2이상을 아미노질소가 차지하고 있었고 다음으로 총 creatinine-N, TMAO-N 및 TMAN순이었다.

Keywords

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