气调包装抑制去壳雷竹笋褐变的研究

Study on Inhibition of Browning of Peeled Bamboo Shoots with Modified Atmosphere Packaging

为探索气调包装(MAP)抑制去壳雷竹笋褐变的效果,实验研究了在气体比例为2%O2、5%CO2和93%N2,贮藏温度10℃的条件下,去壳雷竹笋在贮藏期间主要生理和品质的变化。结果表明,MAP可以明显的抑制雷竹笋MDA的含量和POD、PAL的活性,从而抑制了雷竹笋的褐变。雷竹笋的褐变是细胞区域化膜系统改变和酶促褐变共同作用的结果,单纯多酚含量和PPO活性两个指标不能作为雷竹笋褐变的限制因子。

The effectiveness of modified atmosphere packaging (MAP) on the peeled bamboo shoots (Phyllostachys praecox) was studied in this paper. The peeled bamboo shoots were stored at 10℃ with a combination of 2%O2+5%CO2+93%N2, and the main physiological and quality parameters were monitored during storage. The results showed that MAP significantly inhibited MDA contents and POD, PAL activity, thereby prevented the browning of bamboo shoots. The browning of bamboo shoots was due to the combination of the changing of cell compartmentalization membrane system and enzymatic browning. The polyphenol and PPO activity could not be used as the indicators of browning of bamboo shoots.