食品科学 ›› 2007, Vol. 28 ›› Issue (11): 276-279.

• 工艺技术 • 上一篇    下一篇

不同工艺参数乳酸处理对猪肉肉色及去微生物污染的影响

 孙京新, 周光宏, 罗欣, 徐幸莲   

  1. 南京农业大学农业部农畜产品加工与质量控制重点开放实验室; 山东农业大学食品科学与工程学院; 南京农业大学农业部农畜产品加工与质量控制重点开放实验室 江苏南京210095青岛农业大学青岛市现代农业质量与安全工程重点实验室; 山东青岛266109; 江苏南京210095; 山东泰安271018;
  • 出版日期:2007-11-15 发布日期:2011-11-22

Effects of Different Lactic Acid Treatments on Pork Color and Microbial Decontamination

 SUN  Jing-Xin, ZHOU  Guang-Hong, LUO  Xin, XU  Xing-Lian   

  1. 1.Key Laboratory of Agricultural and Animal Products Processing and Quality Control, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China;2.Qingdao Key Laboratory of Modern Agricultural Quality and Safety Engineering, Qingdao Agricultural University, Qingdao 266109, China; 3.College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
  • Online:2007-11-15 Published:2011-11-22

摘要: 目的:研究了不同工艺参数乳酸处理对猪肉肉色以及去微生物污染的影响。方法:通过对乳酸不同浓度(1.0%、1.5%、2.0%)、不同温度(35、45、55℃)、不同时间(30、45、60s)进行正交试验设计分组,浸泡处理猪肉(背最长肌),测定其红色度a*值变化;将上述两组乳酸处理工艺分别处理大肠杆菌和沙门氏菌。结果:对猪肉肉色影响不显著(p>0.05)的乳酸处理组工艺参数分别为乳酸浓度1.5%、温度45℃、时间60s和乳酸浓度2.0%、温度35℃、时间60s;乳酸浓度1.5%、温度45℃、时间60s处理与乳酸浓度2.0%、温度35℃、时间60s处理对大肠杆菌和沙门氏菌的致死效果均显著。结论:上述两组乳酸处理工艺可为冷却猪肉生产HACCP质量控制体系中乳酸喷淋减菌关键控制点关键限值的选择提供依据。

关键词: 乳酸处理, 猪肉肉色, 大肠杆菌, 沙门氏菌

Abstract: Objective: To study the effects of different lactic acid treatments on pork color and microbial decontamination. Methods: Pork(Longissimus dorsi) was treated (immersed) in different concentrations(1.0%, 1.5%, 2.0%), temperatures (35 ℃, 45℃, 55℃) and duration times of lactic acid grouped by orthogonal test design, with pork color redness a was measured. Escherichia coli and Salmonella spp. were treated by the above two lactic acid treatments respectively. Results: Pork color redness a is not affected significantly (p>0.05) by the following lactic acid treatments concentration 1.5%, temperatures 45℃, duration time 60 s, concentration 2.0%, temperatures 35℃, duration time 60 s. The above two lactic acid treatments show same effectiveness to kill Escherichia coli and Salmonella spp. Conclusion: The above two lactic acid treatments can provide be as critical levels of critical control point of HACCP quality control system during chilled pork processing.

Key words: lactic acid treatment, pork color, Escherichia coli, Salmonella spp.