食品科学 ›› 2009, Vol. 30 ›› Issue (19): 13-18.doi: 10.7506/spkx1002-6630-200919001

• 基础研究 •    下一篇

食盐腌渍与超声波处理对牛肉脂肪酸组成的影响

陈银基1,鞠兴荣1,周光宏2   

  1. 1.南京财经大学 江苏省粮油品质控制及深加工技术重点实验室 2.南京农业大学 教育部肉品加工与质量控制重点开放实验室
  • 收稿日期:2008-11-07 出版日期:2009-10-01 发布日期:2010-12-29
  • 通讯作者: 陈银基 E-mail:chenyinji@gmail.com
  • 基金资助:

    “十一五”国家科技支撑计划项目(2006BAD08B04;2008BADA8B04)

Effect of Salting Combined with Ultrasonic Treatment on Fatty Acid Composition of Beef

CHEN Yin-ji1,JU Xing-rong1,ZHOU Guang-hong2   

  1. 1. Key Laboratory of Grain and Oils Quality Control and Deep-utilizing Technology of Jiangsu Province, Nanjing University of
    Finance and Economics, Nanjing 210003, China;2. Key Laboratory of Meat Processing and Quality Control, Ministry of
    Education, Nanjing Agricultural University, Nanjing 210095, China
  • Received:2008-11-07 Online:2009-10-01 Published:2010-12-29
  • Contact: CHEN Yin-ji1 E-mail:chenyinji@gmail.com

摘要:

研究牛肉(公牛的半腱肌,n=7)在梯度浓度(2%、4% 和6%)的食盐溶液中湿法腌渍和采用超声波结合处理,在4℃条件下保存4d 后的两种处理方式对牛肉肌内脂肪不同脂肪酸组成(中性脂肪NL、极性脂肪PL 和总脂肪TL)的影响。结果表明,腌制显著降低中性脂肪、极性脂肪以及总脂中软脂酸(C16:0)和总饱和脂肪酸(SFA)的百分含量,提高肌内脂肪中性脂肪和总脂中大多数多不饱和脂肪酸(PUFA)的含量(P < 0.05),并导致多不饱和脂肪酸与饱和脂肪酸比值(p/s)的显著提高,降低脂肪酸动脉粥样硬化指数(IA)和血栓指数(IT);超声波结合处理对PUFA、p/s 的提高作用大于单纯NaCl 处理,2% 的NaCl 腌制剂结合超声波处理可以达到6% NaCl 一样的提高p/s 效果。低盐腌制结合超声波处理可以增强腌制效果,提高牛肉营养价值。

关键词: 牛肉, 腌制, 超声波, 脂肪酸

Abstract:

Seven beef semitendinosus muscles were conducted salting process (NaCl of 2%, 4% and 6%) or salting combined with ultrasonic treatment, and then preserved for 4 days at 4 ℃. Composition change of fatty acids, such as neutral lipid (NL), polar lipid (PL) and total lipid (TL) were determined thereafter. Results showed that salting resulted in a significant increase in polyunsaturated fatty acids (PUFA) in NL and TL, which correspondingly improved the ratio of polyunsaturated fatty acid to saturated fatty acid (p/s) and significantly decreased the index of atherosclerosis (IA) and the index of thrombosis (IT). However, salting combined with ultrasonic treatment provided a significant enhancement in the increase of PUFA and p/s ratio, compared with the treatment of alone salting. Moreover, salting with 2% NaCl combined with ultrasonic treatment achieved a similar effect on p/s ratio improvement as the salting in 6% NaCl solution. Therefore, salting in low NaCl solution combined with ultrasonic treatment can offer healthy and nutrition-rich beef.

Key words: beef, salting, ultrasonic treatment, fatty acid

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