Food and Fermentation Industries

Effects of Pulsed Electric Fields on Antioxidant Capacity of Milk

  • Zhang Sha ,
  • Yang Ruijin ,
  • Zhao Wei ,
  • Liang Qi ,
  • Wang Yanfang
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Online published: 2010-03-25

Abstract

In this study,the antioxidant capacity and lipid peroxidation of bovine milk subjected to thermal and PEF processing were investigated. "Diphenyl Picryl Hydrazyl" (DPPH) assay was used to evaluate the radical-scavenging capacity of the milk,the peroxide value (POV) method was determined by the modified International Dairy Federation (IDF) Fe-oxidation-based spectrophotometric method. The results showed that the radical-scavenging capacity of fresh milk was 49.65%,and no matter whether the milk processed by PEF(30 kV/cm,400 μs) or thermal processing (60 ℃ for 30 min or 75 ℃ for 15 s),the antioxidant capacity was decreased and the primary oxidation value were increased.

Cite this article

Zhang Sha , Yang Ruijin , Zhao Wei , Liang Qi , Wang Yanfang . Effects of Pulsed Electric Fields on Antioxidant Capacity of Milk[J]. Food and Fermentation Industries, 2010 , 36(03) : 187 -191 . DOI: 10.13995/j.cnki.11-1802/ts.2010.03.036

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