气调贮藏对小白菜品质及生理生化特性的影响

摘要

为了研究小白菜气调贮藏的工艺参数及其对生理生化品质的影响,本试验研究了不同的氧气浓度和二氧化碳水平(4%O2+5%CO2,4%O2+2%CO2,7%O2+5%CO2,21%O2+0.03%CO2)对小白菜低温贮藏过程中营养及生理生化品质的影响.实验结果显示:与普通冷藏组相比,气调处理组的小白菜叶绿素、抗坏血酸含量、含水量、可溶性糖、可溶性蛋白质、可溶性固形物含量、超氧化物歧化酶(SOD)活性显著高于普通冷藏组,多酚氧化酶(PPO)过氧化物酶(POD)、丙二醛(MDA)含量显著低于普通冷藏组.以4%O2+5%CO2条件下的贮藏品质最好.%To study the effects of controlled atmosphere (CA) on physiological and biochemical quality of pahchoi, the pahchoi were stored in different conditions (4%O2+5%CO2, 7%O2+5%CO2, 4%O2+2%CO2 and cold storage (CK)). The results showed that the pahchoi stored in CA revealed better quality with the characteristics of higher nutritional quality and superoxide dismutase(SOD) activity than controlled groups. And their content of malondialde-hyde(MDA), activity of phenol oxidase(PPO) and peroxidase (POD) were significantly lower than that of the cold storage. Of all groups, Pahchoi stored in controlled atmosphere of 4% O2+5%CO2 heep the best quality in the CA groups.