FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (20): 448-452.doi: 10.7506/spkx1002-6630-201020095

• Packaging & Storage • Previous Articles     Next Articles

Quality Change in ICF-treated Grass Carp Blocks during Frozen Storage

NI Ming-long,ZHU Zhi-wei,ZENG Qing-xiao   

  1. (College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China)
  • Received:2010-06-18 Online:2010-10-25 Published:2010-12-29
  • Contact: NI Ming-long E-mail:wodeyingzi2008@126.com

Abstract:

In order to explore the effect of immersion chilling and freezing (ICF) on the quality of frozen food, the quality change of ICF-treated grass carp in multi-element aqueous solution composed of salt sodium, ethanol and glycol propylene at -40 ℃ were investigated and also compared with traditional air-blast freezing (-40 ℃, 6 m/s). Results indicated that the frozen rate of ICF exhibited 1.5-fold faster than that of air-blast freezing. The uptake amounts of sodium chloride, ethanol, and propylene glycol in grass carp were 0.14%, 0.17%, 0.63% and 0.94%, respectively. Compared with traditional air-blast freezing, ICF-treated samples had higher salt-soluble protein, less lipid oxidation, reduced drip loss and low moisture loss. Therefore, ICF exhibited more beneficial for maintaining texture properties and provided a better quality for grass carp during frozen storage.

Key words: immersion chilling and freezing, grass carp, frozen storage, quality.

CLC Number: