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高压静电场辅助牛肉湿腌过程传质动力学分析

Mass Transfer Kinetics Analysis of Beef Wet Salted Process Assisted by High Voltage Electrostatic Field

  • 摘要: 为明确高压静电场(High voltage electrostatic field, HVEF)辅助牛肉腌制过程中的传质动力学规律,将HVEF与传统湿腌法结合,分析比较了1.5 kV HVEF和3.0 kV HVEF对腌制过程中牛肉的总质量、含水率、NaCl含量变化量的影响,并通过扫描电镜对不同腌制处理牛肉的微观结构进行观察。结果表明:与传统湿腌比较,HVEF辅助处理可显著提高腌制牛肉含水率、总质量以及NaCl扩散速率(P<0.05),且3.0 kV处理组效率更高,传统湿腌、1.5 kV HVEF辅助湿腌、3.0 kV HVEF辅助湿腌的NaCl表观扩散系数分别为5.593×10-10、6.284×10-10、1.142×10-9;HVEF辅助腌制的牛肉肌原纤维束膜被破坏,肌原纤维之间更松散,有利于NaCl和水分在肌肉中扩散。

     

    Abstract: In order to clarify the law of mass transfer kinetics in the process of beef salting assisted by high voltage electrostatic field(HVEF), the HVEF was combined as a new technology with the traditional wet salting method. The effects of 1.5 kV HVEF and 3.0 kV HVEF treatments on the total weight, water content and NaCl content of beef during salting were analyzed and compared, and the microstructure of beef with different salting treatments was observed by scanning electron microscopy. Treatment significantly(P<0.05) increased the water content, total weight and NaCl diffusion rate of beef during wet curing, and 3.0 kV HVEF treatment group had a higher effect. The apparent diffusion coefficients of NaCl in traditional wet salting, 1.5 kV HVEF assisted-wet salting and 3.0 kV HVEF assisted-wet salting were 5.593×10-10 m~2/s, 6.284×10-10 m~2/s and 1.142×10-9 m~2/s, respectively. Scanning electron microscope results showed that compared with traditional wet salting group, the myofibrillar bundle membrane of beef under HVEF assisted-wet salting was destroyed and the myofibrils were looser, which was conducive to the diffusion of NaCl and water in muscles. As a new electric field technology, HVEF has a good application prospect in meat curing.

     

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