Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 99, Issue -, Pages 268-275Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.lwt.2018.09.064
Keywords
Lightly salted pork tenderloin; HVEF; Corona wind; Thermal properties; Drip loss
Categories
Funding
- National Science Foundation of China (NSFC) [31571908]
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The thawing characteristics, initial thawing mechanism and post-thawing quality of lightly salted, frozen pork tenderloin following the use of high-voltage electrostatic fields (HVEFs) were investigated in this study. The thawing rate increased with increasing salt concentrations for pork thawed by a - 10 kV or -15 kV HVEF. Thermal property values of pork changed with increasing salt concentration (0-6%). HVEFs could enhance salt diffusion during the thawing process. The pork tenderloin thawed using HVEFs had significantly less drip loss (P < 0.05) than occurred during air thawing, which was also proven by the myosin denaturation enthalpy ( - 0.05 +/- 0.03 J/g for the air -thawed samples and - 0.24 +/- 0.03 for the -10 kV HVEF-thawed samples). Additionally, there is apparent sample grouping with respect to the thawing methods between 30 ms -100 ms after PCA analysis. Thawing with -10 kV and -15 kV HVEFs resulted in a 0.5 log reduction in the number of Pseudomonas in the pork tenderloin compared with the number in the air-thawed group at day 0.
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