植酸和茶多酚复合抗氧化剂对辐照卤制鸡翅品质的影响

Effects of Natural Antioxidant Combinations of Phytic Acid and Tea Polyphenols on the Quality of Irradiated Marinated Chicken Wings

为减缓辐照卤制鸡翅氧化变质,延长其贮藏期,探讨天然抗氧化剂对提高辐照卤制鸡翅4℃条件下贮藏过程中氧化稳定性的作用效果与机制。对比7种抗氧化剂对·OH和1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)自由基的清除率,分析不同植酸和茶多酚复配比例的协同处理效果。结果表明:植酸对·OH表现出较强的清除作用,当达最高质量浓度0.06 g/100 mL时,清除率达63%;茶多酚对DPPH自由基清除作用较强,在最高质量浓度0.06 g/100 mL时,清除率达94%;植酸和茶多酚按1∶1比例(0.01 g/100 mL植酸+0.01 g/100 mL茶多酚)复配时,样品pH值、过氧化值、酸价和硫代巴比妥酸值变化最小,协同抗氧化效果最佳,且样品的感官品质和色泽保持较好;采用电子鼻对卤制鸡翅的总体气味进行检测可知,不添加天然抗氧化剂且无辐照处理组与植酸和茶多酚配比1∶1处理组的差异较大,其结果与理化指标测定结果相一致,说明最佳抗氧化组合为0.01 g/100 mL植酸和0.01 g/100 mL茶多酚配比1∶1,其能较好地保持辐照卤制鸡翅的品质和风味。

In order to alleviate the oxidative deterioration and prolong the storage period of irradiated marinated chicken wings, we investigated the effect and underlying mechanism of natural antioxidants in improving the oxidative stability of irradiated marinated chicken wings stored at 4 ℃. Seven antioxidants were evaluated for their effect on scavenging of hydroxyl and 1,1-diphenyl-2-picrylhydrazyl(DPPH) radicals. The synergism between phytic acid and tea polyphenols at different ratios was evaluated. The results showed that phytic acid exhibited potent hydroxyl radical scavenging activity with a percentage scavenging of 63% at 0.06 g/100 mL while tea polyphenols had powerful DPPH radical scavenging activity with a percentage scavenging of 94% at 0.06 g/100 mL. The best synergistic antioxidant effect was observed with a 1:1 mixture of phytic acid and tea polyphenols(0.01 g/100 mL each), and minimal changes in pH value, peroxide value(POV), acid value(AV) and thiobarbituric acid(TBA) value of chicken wings were observed with this mixture;the sample maintained good sensory quality and color. There was a significant difference in odor profile as assessed by electronic nose as well as physicochemical properties between the unirradiated control without natural antioxidant and irradiation plus addition of the antioxidant mixture, suggesting this antioxidant mixture was optimal for quality and flavor maintenance of irradiated marinated chicken wings.