Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Changes of Nucleotides in the Raw Fishes during the Aquarium Storage

수족관 저장기간에 따른 횟감생선의 핵산관련성분 변화

  • Published : 2004.06.30
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Abstract

Changes in nucleotide concentrations of aquarium-stored flounder, sea bass, and sea bream were studied. ATP, ADP, and AMP slowly decreased, whereas IMP, HxR and Hx slightly increased with increasing storage ported. ATP was converted into IMP at initial storage stage. Changes in concentrations of nucleotides differed depending on fish type and season. Freshness indicators, $K,\;K_{p}\;G,\;P,\;H,\;and\;F_{r}$ values during 14 days storage showed no significant differences. Changes in nucleotide concentrations during 14 days storage had no significant effect on taste of raw fishes.

횟감생선으로 주로 이용되고 있는 광어, 농어와 도미의 수족관 저장기간에 따른 핵산관련성분의 변화, 신선도 및 품질 평가를 위한 선도 지수를 확인하였다. 핵산관련성분 중 ATP, ADP, AMP는 수족관 저장기간에 따라 서서히 감소하였고, IMP, HxR, Hx는 서서히 증가하였다. 특히 IMP가 가장 높은 함량을 차지하였는데, 여름 도미에서 $16.59{\mu}mol/g$으로 가장 높게 나타났고, 여름 농어에는 $9.54{\mu}mol/g$이 함유되어 어종간 차이가 확인되었다. 수족관 저장기간에 따른 증가범위는 $3-6{\mu}mol/g$으로 어종별 함량변화는 현저한 차이를 나타내지 않았다. 횟감생선의 사후 ATP에서 IMP로의 전환은 수족관 저장 초기에 거의 발생하였다. 광어, 농어 및 도미의 $K,\;K_{p}\;G,\;P,\;F_{r}\;value$에 의해 신선도를 판정한 결과 14일동안의 수족관 저장시 신선도는 현저한 변화론 나타내지 않았으며, 여름보다 겨울에 비교적 높은 선도를 보였다. 핵산관련성분 또한 어종 및 계절별 차이를 보였으나 수족관 저장 14일동안 변화가 크게 나타나지 않았다.

Keywords

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