Effects of high-voltage electrostatic field treatment on the thawing rate and post-thawing quality of frozen rabbit meat
Effects of high-voltage electrostatic field treatment on the thawing rate and post-thawing quality of frozen rabbit meat
复制标题
高压静电场处理对冷冻兔肉解冻速度及解冻后品质的影响
DOI：
10.1016/j.ifset.2017.04.011
复制
发表时间：
2017-06-01
影响因子：
6.6
通讯作者：
Liu, Haijie
中科院分区：
文献类型：
--
作者：
Jia, Guoliang;Liu, Hongjiang;Liu, Haijie
在这项研究中研究了使用高压静电场（HVEF）后冷冻兔肉的解冻率和融化后质量。在-15，-20或-25 kV的电压下，解冻效率可以显着提高，HVEF处理可导致微生物数量减少0.5-1.7log。兔肉解冻为-20 kV具有最佳品质，包括高水位容量（WHC）和良好的质地。尽管在-20 kV HVEF下处理的肌红蛋白存在结构改变，但核质蛋白溶解度并未降低。此外，如肌动蛋白变性焓所证明的那样，-20 kV HVEF处理导致肌原纤维蛋白的变性较少（分别为-0.26 +/- 0.085和-0.12 +/- 0.040 J/g）。最后，在-20 kV HVEF上解冻对兔肉中的水的松弛，包括水的放松，包括水流动性。工业相关性：这项研究发现，HVEF解冻可能会使解冻时间缩短60％。此外，与空气融化相比，-20 kV HVEF解冻导致肌原纤维蛋白的变性较少，这对于在兔肉类行业的进一步加工非常重要。
The thawing rate and post-thawing quality of frozen rabbit meat after the use of high-voltage electrostatic fields (HVEFs) were investigated in this study. The thawing efficiency could be significantly improved at voltages of - 15, - 20 or - 25 kV, and HVEF treatment resulted in 0.5-1.7log reductions in the number of microorganisms. The rabbit meat thawed at - 20 kV had optimal qualities, including a high water-holding capacity (WHC) and good texture quality. Although there were structural alterations of the myoglobin treated at - 20 kV HVEF, the sarcoplasmic protein solubility was not reduced. Additionally, the - 20 kV HVEF treatment led to less denaturation of the myofibrillar proteins than with still air thawing, as demonstrated by the actin denaturation enthalpy (- 0.26 +/- 0.085 and - 0.12 +/- 0.040 J/g, respectively). Finally, thawing at - 20 kV HVEF had little influence on the relaxation of water, including the water mobility, in rabbit meat.Industrial relevance: This study found that HVEF thawing could shorten thawing time by 60%. Moreover, compared with air thawing, - 20 kV HVEF thawing led to less denaturation of the myofibrillar proteins, which is very important for further processing in the rabbit meat industry.