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当前位置: 首页 > 文章 > 熟制麻辣小龙虾冷藏和冻藏条件下的品质变化 肉类研究 2018 (5) 52-56
Position: Home > Articles > Quality Change of Cooked Spicy Crayfish during Refrigerated and Frozen Storage MEAT RESEARCH 2018 (5) 52-56

熟制麻辣小龙虾冷藏和冻藏条件下的品质变化

作  者：
吴晨燕;王晓艳;王洋;马俪珍
单  位：
天津农学院食品科学与生物工程学院国家大宗淡水鱼加工技术研发分中心(天津)天津市水产品加工及质量安全校企协同创新实验室;天津农学院水产学院天津市水产生态及养殖重点实验室
关键词：
小龙虾;熟制;冷藏;冻藏;品质变化
摘  要：
研究熟制麻辣小龙虾在冷藏和冻藏条件下的品质变化,将小龙虾油炸后拌料入味,真空包装并进行沸水煮制杀菌(沸水煮制20 min后快速冷却),分别在4℃和-18℃条件下贮藏,通过感官评分、菌落总数、大肠杆菌数量、总挥发性盐基氮(total volatile base nitrogen,TVB-N)值、pH值及食盐含量测定对麻辣小龙虾的品质变化进行研究。结果表明:从感官评定结果、菌落总数和TVB-N值综合评判,4℃冷藏和-18℃冻藏的麻辣小龙虾能够保持最佳品质的贮藏时间分别为4周和4个月;在保质期内,麻辣小龙虾的菌落总数<4.7(lg(CFU/g)),TVB-N值<30 mg/100 g,pH值在弱碱性范围内变化;4℃冷藏小龙虾贮藏前3周的食盐含量呈逐渐升高趋势(达1.99%),贮藏3周后变化不显著(P>0.05),而-18℃冻藏小龙虾的食盐含量变化缓慢,保持在1.6%～1.8%范围内。经感官评定,保质期内的麻辣小龙虾风味鲜美、品质优良。
译  名：
Quality Change of Cooked Spicy Crayfish during Refrigerated and Frozen Storage
作  者：
WU Chenyan;WANG Xiaoyan;WANG Yang;MA Lizhen;National R&D Branch Center for Conventional Freshwater Fish Processing (Tianjin), Tianjin Collaborative Innovation Laboratory of Aquatic Product Processing and Quality Safety between Schools and Enterprises, College of Food Science and Biotechnology, Tianjin Agricultural University;Tianjin Key Laboratory of Aquatic Ecology and Aquaculture, College of Fisheries,Tianjin Agricultural University;
单  位：
Tianjin
关键词：
crayfish;;cooked;;refrigerated storage;;frozen storage;;quality change
摘  要：
This work aimed to study the quality changes of cooked spicy crayfish at refrigerated and frozen temperatures. Crayfish were deep fried, seasoned, vacuum packaged, pasteurized in boiling water for 20 minutes, quickly cooled down, and then stored at 4 ℃ or –18 ℃. Sensory evaluation, total bacterial count, E. coli count, total volatile base nitrogen(TVB-N) value, pH value and salt content were determined. Results showed that the optimal storage time of spicy crayfish was 4 weeks and 4 months at 4 ℃ and –18 ℃, respectively as determined by taking into account sensory evaluation, total bacterial count and TVB-N value. During this period, the total bacterial count was less than 4.7(lg(CFU/g)), the TVB-N value was smaller than 30 mg/100 g, and the pH value varied in a weakly alkaline pH range. The salt content continuously increased(up to 1.99%) during the first 3 weeks at 4 ℃, but did not significantly change during the subsequent 3 weeks(P > 0.05). During frozen storage, the salt content varied slowly in the range from 1.6% to 1.8%. Sensory evaluation revealed that the spicy crayfish maintained delicious flavor and good quality during the shelf life.

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