FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (19 ): 153-156.doi: 10.7506/spkx1002-6630-200919034

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Effects of High-voltage Electrical Stimulation on Tenderness and Microstructure of Postmortem Beef

MEI Xue-ying1,LIU Jing-ming2,LIU Yan3,DAI Rui-tong1,*   

  1. 1. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China;
    2. Beijing Food Research Institute, Beijing 100162, China;3. China Meat Research Center, Beijing 100075, China
  • Received:2009-08-11 Online:2009-10-01 Published:2010-12-29
  • Contact: DAI Rui-tong1,* E-mail:dairuitong@gmail.com

Abstract:

This study was carried out to explore acceleration of ageing of chilled beef and improvement of meat tenderness by high-voltage electrical stimulation (HVES). The changes of pH value, shear force value and ultra-microstructure of beef without HVES and with 1 min and 2 min HVES (5200 V) treatments were studied in the process of chill-ageing. It was concluded that (1) HVES induced an earlier onset of rigor mortis and meat softening; (2) after 4 days of chilled-ageing at 0- 4 ℃, beef samples electrically stimulated at 5200 V for 2 min had the same level of tenderness and ultra-microstructure as compared with samples without HVES and chilled-aged for 7 days, which indicated that 5200 V HVES could shorten the time required for the maximum tenderization, and increase the degree of tenderness of beef; and lengthened electrical stimulation time results in better tenderization.

Key words: high-voltage electrical stimulation, pH value, shear force value, microstructure, tenderness of beef

CLC Number: