College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816, PR China.
Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, PR China.
Poult Sci. 2020 Mar;99(3):1761-1767. doi: 10.1016/j.psj.2019.11.013. Epub 2020 Jan 27.
The aim of the current research was to examine lipid oxidation in chicken meat heated to different temperatures followed by refrigerator storage and the factors contributing to lipid oxidation. It showed that lipid oxidation was significantly promoted when meat was heated up to 70°C and stored for 2 and 4 D as measured by thiobarbituric acid reactive substance. The monounsaturated fatty acids and polyunsaturated fatty acids also decreased significantly (P < 0.05) with the increase of heating temperature. The liberation of nonheme iron and increase of hydroxyl radical were observed in heated chicken meat, and the activities of antioxidant enzymes was decreased considerably at higher temperatures. The changes of these prooxidants and antioxidants might constitute a possible mechanism for the stronger lipid oxidation in heated meat.
本研究旨在探讨不同加热温度后冷藏鸡肉中的脂质氧化情况及导致脂质氧化的因素。结果表明,用硫代巴比妥酸反应物测定时,当肉加热至 70°C 并储存 2 天和 4 天时,脂质氧化显著增加。随着加热温度的升高,单不饱和脂肪酸和多不饱和脂肪酸也显著降低(P < 0.05)。在加热鸡肉中观察到非血红素铁的释放和羟基自由基的增加,并且在较高温度下抗氧化酶的活性大大降低。这些氧化剂和抗氧化剂的变化可能构成了加热肉中脂质氧化更强的一种可能机制。