共查询到16条相似文献,搜索用时 78 毫秒
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以宰后冷却24h的猪里脊肉为材料,用四组含不同浓度CO的混合气体进行气调包装,于4±1℃条件下贮藏,分别在第0、5、10、15、20d测定相关指标。结果表明,CO气调包装可以明显改善肉色,使冷却肉在贮藏期中保持稳定的鲜红色。与无氧组相比,CO和O2的共同存在可以使肉色更加自然。选定的最佳气体配比0.4%CO、24%O2、50%CO2、25.6%N2可以大大改善冷却肉的肉色,并使冷却肉的货架期超过10d。四组处理样品在贮藏到第15d时,TVB-N值超过15mg/100g,细菌总数超过106cfu/g,各处理对冷却肉的货架期影响差异不显著。 相似文献
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含CO气调包装对冷却肉护色效果的研究 总被引:2,自引:1,他引:2
本试验采用0.5%CO/60%CO2/39.5%N2(CO组)真空(真空组)、70%O2/30%CO2(高氧组)和60%CO2/40%N2(无氧组)四种不同的气调包装,以及三种不同CO浓度的气调包装分别包装冷却肉并在1±1℃下贮藏,研究CO气调包装对肉色稳定性的影响。结果显示,CO组可明显延长冷却肉色泽稳定的时间,使冷却肉在整个贮存期中都保持鲜艳的红色,优于真空组、高氧组和无氧组,CO可向肉中不断渗透,生成稳定的鲜艳红色的CO-肌红蛋白。 相似文献
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气调包装对冷却牛肉货架期的影响 总被引:12,自引:0,他引:12
冷却肉的货架期直接影响着其销售情况。本文用不同的气调成分:0.5%CO/60.4%CO2/39.1%N2(CO组)、62.8%CO2/37.2%N2(无氧组)、69.9%O2/30.1%CO2(高氧组)和真空(真空组)包装冷却牛肉,并在1±1℃下贮藏。结果显示,CO组在贮藏28d时在保持鲜红颜色的同时,鲜度仍在国标规定的范围内;高氧组第一周可以保持颜色鲜红,但第二周已有较强的脂肪氧化异味,且颜色开始褐变;无氧组和真空组处理的冷却肉在28d时虽然可保持鲜度在国标范围内,但此两组处理的色泽在28d时呈灰褐色或暗紫色,不是消费者所喜爱的鲜红色。 相似文献
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《食品工业科技》2003,(06):71-73
冷却肉的货架期直接影响着其销售情况。本文用不同的气调成分:0.5%CO/60.4%CO2/39.1%N2(CO组)、62.8%CO2/37.2%N2(无氧组)、69.9%O2/30.1%CO2(高氧组)和真空(真空组)包装冷却牛肉,并在1±1℃下贮藏。结果显示,CO组在贮藏28d时在保持鲜红颜色的同时,鲜度仍在国标规定的范围内;高氧组第一周可以保持颜色鲜红,但第二周已有较强的脂肪氧化异味,且颜色开始褐变;无氧组和真空组处理的冷却肉在28d时虽然可保持鲜度在国标范围内,但此两组处理的色泽在28d时呈灰褐色或暗紫色,不是消费者所喜爱的鲜红色。 相似文献
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《食品与发酵工业》2016,(9):130-136
探究在不同含氧气调包装方式中影响牦牛肉肉色稳定性的因素。以牦牛背最长肌为试验材料,采用真空包装为对照组,以O_2含量为40%、60%、80%,CO_2含量为60%、40%、20%的三种不同含氧气调包装组为试验组,在0~4℃的贮藏条件下,每隔4天,对各包装组中牦牛肉的肉色、肌红蛋白百分含量、硫代巴比妥酸值(TBA值)、乳酸脱氢酶活性(LDH活性)、还原型辅酶Ⅰ(NADH)含量及高铁肌红蛋白还原酶活性(MRA活性)进行测定。结果表明:与真空包装组相比,含氧气调包装组更利于良好肉色的形成。O_2含量为60%的气调包装组中牦牛肉的肉色稳定性最好,且LDH活性和NADH含量较高。根据指标间相关性分析得出,LDH活性和NADH含量与a*值和OMb%呈显著正相关(P0.05)。因此,LDH活性和NADH含量是影响各包装组牦牛肉肉色稳定性的主要因素。 相似文献
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<正>包装能使冷却肉类产品长期贮存,但肉类产品最初的质量、加工技术和存放条件也是影响货架期长短的因素.真空包装和充气包装产品的贮存稳定性是受三个因素影响的,它们是:贮存温度、加工条件和产品的pH.笔者认为在采用一般包装技术条件下,要求产品达到延长货架期的目的,估计不要太高,因为任何商业环境都是多变的,使得冷却肉类产品在贮藏温度、产品运输、贸易等方面不能系统控制.英国苏格兰区的UFB肉类包装公司最近研制出了一种新的包装系统——冷却气调包装技术系统(Chilled Atmosphere Packing Te-chnology). 相似文献
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该文以0~4℃贮藏的冷却鸭肉为研究对象,以保鲜膜托盘包装为对照,通过分析肉色、pH值、蒸煮损失率、菌落总数、乳酸菌数、挥发性盐基氮(total volatile base nitrogen,TVB-N值)等指标,研究了30%CO_~(2+)70%N_2以及0. 4%CO+30%CO_~(2+)70%N_2气调包装(modified atmosphere packaging,MAP)对冷却鸭肉的保鲜效果。结果表明,与普通保鲜膜托盘包装相比,在贮藏的20 d内,2种气调包装方式均能抑制冷却鸭肉中微生物的生长,减少TVB-N的产生,从而显著延长了冷却鸭肉的货架期,具有较理想的保鲜效果。0. 4%CO气调包装没有起到进一步的抑菌效果,但在贮藏过程中鸭皮的L*值与a*值均高于其他2种处理组,并保持了产品的优良外观,具有良好的护色作用。综合分析,0. 4%CO+30%CO_~(2+)70%N_2气调包装对冷却鸭肉的保鲜效果最好。 相似文献
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冷却牛肉用2%山梨酸钾+0.5%亚硝酸钠+1%抗坏血酸钠处理并真空包装,在1℃±1℃下贮藏,处理组货架期和色泽稳定性显著延长,贮存28天时,仍保持较好的颜色和较低的TVB-N值,且本处理的冷却肉中山梨酸钾和亚硝酸钠含量远远低于国标最大限量. 相似文献
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Fresh pre- and postrigor pork sausage patties were manufactured in the Iowa State University Meat Laboratory and packaged either in modified atmosphere (MAP) with 0.4% carbon monoxide (CO) and 99.6% carbon dioxide (CO2) or on foam trays overwrapped with oxygen-permeable film (OW). Packages were stored at 2 to 40C under fluorescent lights for up to 31 days. Aerobic, anaerobic, and psychrotrophic plate counts, raw and cooked color, purge, and lipid oxidation were measured during storage. Results indicated that both pork sausage products in MAP had lower aerobic and psychrotrophic counts and less lipid oxidation throughout storage (P < 0.05). Raw color of both products in MAP was redder than the OW patties (P < 0.05), but the prerigor pork sausage in MAP benefited more from the CO atmosphere in terms of raw color than the postrigor pork sausage in MAP. Cooked color of the prerigor pork sausage in MAP was significantly redder than cooked color of the postrigor pork sausage. Both pork sausage products in MAP were also lighter (L* value) than the OW patties for raw and cooked color. Therefore, the combination of CO and CO2 in MAP was beneficial in extending the shelf life of pre-and postrigor fresh pork sausage by reducing aerobic and psychrotrophic microbial growth and improving oxidative stability and color, compared to conventional OW packaging. However, increased purge, increased anaerobic growth, and changes in cooking behavior were also observed for the products in MAP during storage (P < 0.05). 相似文献
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《Journal of food engineering》2006,77(4):1078-1086
The effect of MAP on quality changes of gutted farmed bass when stored at 3 °C were investigated for up to 9 days. Gutted farmed bass was packed with six different atmospheres (0%O2–70%CO2; 20%O2–70%CO2; 30%O2–60%CO2; 40%O2–60%CO2; 30%O2–50%CO2; 21%O2–0%CO2). Headspace gas composition (O2%; CO2%), aerobic mesophilic bacteria (AMB) and Enterobacteriaceae, pH, water loss, flesh moisture content, colour, stiffness, odour and eyes appearance were assessed by means of instrumental and sensory analysis after 0, 2, 5, 7 and 9 days of storage. Atmosphere composed of 30% of O2 and 50% of CO2 was the best one to preserve the quality of the gutted farmed bass. PCA was an effectively instrument to classify gutted bass samples on the bases of quality changes. The effect of the time was explained by the factor 1, whereas the fish were clearly classified along factor 2 in relation to storage atmosphere. 相似文献