两种解冻温度下高压静电场对维持猪肉品质的影响  

Effect of High-voltage Electrostatic Field on Keeping Pork Quality at Two Thawing Temperatures

作　　者：董春燕 张晓东[1] 谢婧荷 乐翔云 徐如颖 刘宝林[1] 王曜 DONG Chunyan;ZHANG Xiaodong;XIE Jinghe;LE Xiangyun;XU Ruying;LIU Baolin;WANG Yao(School of Health Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Technical Center for Animal,Plant and Food Inspection and Quarantine of Shanghai Customs,Shanghai 200135,China;Graduate School of Fisheries and Environmental Sciences,Nagasaki University,Nagasaki 8528521,Japan)

机构地区：[1]上海理工大学健康科学与工程学院,上海200093 [2]上海海关动植物与食品检验检疫技术中心,上海200135 [3]长崎大学水产·环境科学综合研究科,日本长崎8528521

出　　处：《制冷技术》2024年第5期48-54,共7页Chinese Journal of Refrigeration Technology

基　　金：国家重点研发计划(No.2017YFD0400404)。

摘　　要：为了研究在两种解冻温度下高压静电场对保持猪肉品质的效果,本研究将冷冻后的猪肉分别置于普通冰箱(0kV)(RT)和高压静电场冰箱(3.75kV)(HRT)中,在0℃和10℃条件下解冻48h后,通过测定猪肉的持水力、氧化酸败、物性、微生物对猪肉解冻前后的品质变化进行分析。结果显示,在0℃和10℃下,与RT相比,HRT解冻后样品的汁液损失、菌落总数、挥发性盐基氮含量均显著降低,硬度显著升高。10℃HRT的不易流动水(T22)和自由水(T23)的弛豫时间明显右移,不易流动水流失减少,0℃HRT的红度值(a*)高于RT,10℃HRT的黄度值(b*)低于RT。同时,pH、丙二醛等品质指标无显著差异。To investigate the effect of the high-voltage electrostatic field on maintaining pork quality at two thawing temperatures,the frozen pork is placed in two refrigerators:an ordinary refrigerator(0 kV)(RT)and a refrigerator with a high-voltage electrostatic field(3.75 kV)(HRT).After thawing at 0℃and 10℃for 48 hours,the quality changes of pork before and after thawing are examined by measuring the water holding capacity,microorganisms,physical properties,oxidation and rancidity.The results showed that the drip loss,aerobic plate count and TVB-N of samples of HRT are significantly decreased at 0℃and 10℃compared with RT,while the hardness is significantly increased.The relaxation time of the flow loss of immobilized water(T22)and free water(T23)for HRT at 10℃obviously shifted to the right,and the flow loss of immobilized water is reduced.The redness value(a*)of 0℃HRT is higher than that of RT,while the yellowness value(b*)of 10℃HRT is lower than that of RT.Meanwhile,there is no significant difference in pH,malondialdehyde and other quality indices.

关 键 词：高压静电场 解冻 猪肉 品质 

分 类 号：TB611[一般工业技术—制冷工程] TS205.7[轻工技术与工程—食品科学]