Effect of glass transition temperature on the quality of frozen beef

Expand
  • 1(College of Agriculture, Ningxia University, Yinchuan 750021, China) 2(Ningxia Shangnong Biotechnology Industry Development Limited Company,Guyuan 756000,China) 3(Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan)

Online published: 2018-03-19

Supported by

中央财政支持地方高校改革发展资金——食品学科建设项目(2017);宁夏回族自治区重点项目(园区专项:宁夏清真黄牛肉自动分级及品质优化关键技术研发与示范);宁夏高校科研基金(NGY2016018)

Abstract

The glass transition temperature (Tg) of beef was measured at -14 ° C by differential scanning calorimetry (DSC). The beef was stored at -10 ° C (> Tg), 14 ° C (= Tg), - 18 ° C and -22 ° C (<Tg) for 7 months, the effects of vitreous storage on the quality of beef were studied by measuring the change of color parameters, tenderness, total number of colonies and Volatile base nitrogen (TVB-N) during storage, and the dynamic model of beef quality (TVB-N) was established to predict the shelf life. The results showed that the L * value was stable with the time prolonged at -14 ℃, -18 ℃ and -22 ℃. The * value increased first and then decreased, and b * increased gradually. -10 ℃ when the L * value decreases significantly, a * value is gradually reduced. The shear stress of beef under the four storage temperatures increased first and then decreased. The total number of colonies is on the rise. TVB-N values increase gradually with the storage time. According to the Arrhenius equation, the dynamic model of predicting the shelf life of frozen storage was established with TVB-N as the index. The Ea value was 0.2 KJ / mol and the pre-exponent K0was 0.0042.

Cite this article

DONG Huan et al . Effect of glass transition temperature on the quality of frozen beef[J]. Food and Fermentation Industries, 2018 , 44(2) : 240 . DOI: 10.13995/j.cnki.11-1802/ts.014811

Outlines

/