大连海洋大学学报
大連海洋大學學報
대련해양대학학보
JOURNAL OF DALIAN FISHERIES UNIVERSITY
2014年
3期
284-286
,共3页
曲映红%陈新军%刘志东%陈舜胜
麯映紅%陳新軍%劉誌東%陳舜勝
곡영홍%진신군%류지동%진순성
太平洋西北海域%柔鱼%鲜度
太平洋西北海域%柔魚%鮮度
태평양서북해역%유어%선도
Northwestern Pacific Ocean%Ommastrephes bartrami%freshness
以捕捞后0、6、12 h原条入冻和去内脏后再入冻的太平洋西北海域柔鱼Ommastrephes bartramii为研究对象,测定了3个可食部(胴体、鳍和头足)的pH、挥发性盐基氮( TVB-N)、三甲胺( TMA)、甲醛和鲜度( K值),比较了捕后处置对柔鱼品质的影响。结果表明:钓捕后6 h入冻的原条柔鱼胴体的TVB-N、 TMA和甲醛含量已超过临界值,钓捕后12 h入冻的原条柔鱼胴体K值已超过60%,处于初期腐败状态;对于去内脏入冻的柔鱼,仅钓捕后12 h入冻样品胴体的TMA含量接近临界值,说明去内脏入冻的柔鱼比原条入冻柔鱼的新鲜度下降较为缓慢;柔鱼可在捕获后12 h内去内脏入冻,原条柔鱼入冻时间不宜超过6h;同样前处理条件的柔鱼,各可食部中头足的鲜度最优,鳍次之,胴体最差。
以捕撈後0、6、12 h原條入凍和去內髒後再入凍的太平洋西北海域柔魚Ommastrephes bartramii為研究對象,測定瞭3箇可食部(胴體、鰭和頭足)的pH、揮髮性鹽基氮( TVB-N)、三甲胺( TMA)、甲醛和鮮度( K值),比較瞭捕後處置對柔魚品質的影響。結果錶明:釣捕後6 h入凍的原條柔魚胴體的TVB-N、 TMA和甲醛含量已超過臨界值,釣捕後12 h入凍的原條柔魚胴體K值已超過60%,處于初期腐敗狀態;對于去內髒入凍的柔魚,僅釣捕後12 h入凍樣品胴體的TMA含量接近臨界值,說明去內髒入凍的柔魚比原條入凍柔魚的新鮮度下降較為緩慢;柔魚可在捕穫後12 h內去內髒入凍,原條柔魚入凍時間不宜超過6h;同樣前處理條件的柔魚,各可食部中頭足的鮮度最優,鰭次之,胴體最差。
이포로후0、6、12 h원조입동화거내장후재입동적태평양서북해역유어Ommastrephes bartramii위연구대상,측정료3개가식부(동체、기화두족)적pH、휘발성염기담( TVB-N)、삼갑알( TMA)、갑철화선도( K치),비교료포후처치대유어품질적영향。결과표명:조포후6 h입동적원조유어동체적TVB-N、 TMA화갑철함량이초과림계치,조포후12 h입동적원조유어동체K치이초과60%,처우초기부패상태;대우거내장입동적유어,부조포후12 h입동양품동체적TMA함량접근림계치,설명거내장입동적유어비원조입동유어적신선도하강교위완만;유어가재포획후12 h내거내장입동,원조유어입동시간불의초과6h;동양전처리조건적유어,각가식부중두족적선도최우,기차지,동체최차。
The pH, total volatile basic nitrogen(TVB-N), trimethylamine (TMA), formaldehyde and K value were detected in mantles, fins, and tentacles of frozen whole or frozen eviscerated squid Ommastrephes bartrami 0, 6 and 12 hours after handled ( capture) on board to evaluate the effects of handling on squid quality. The results showed that the contents of TVB-N,TMA and formaldehyde in mantle were found beyond the critical value in the frozen whole squid 6 hours after capture, and the K value in the mantle was 60% higher than the critical value in the frozen whole squid 12 hours after capture, indicating the state of initial corruption. In the frozen eviscerated squid, however, only the TMA content in the mantle was nearly to the threshold in the squid frozen for 12 hours af-ter capture, indicating that the freshness of eviscerated squid was decreased more slowly than that in the whole body. It is suggested that squid be eviscerated and frozen within 12 hours after capture, or that be frozen whole within 6 hours after capture. If the squid is processed by the method mentioned above, the best freshness will be found in the mantles, followed by in the fins, and the least in the tentacles.