“吊挂式”窖藏对冬季白菜贮藏品质及活性氧代谢的保鲜作用分析

【目的】研究不同贮藏方式对白菜品质及活性氧代谢的调节作用,为白菜采后贮运方面的新工艺提供技术支持。【方法】采用带根捆叶、削根捆叶、带根散叶、削根散叶的吊挂式方式贮藏,研究吊挂式窖藏对白菜腐烂及发病的影响。【结果】带根捆叶处理能延缓白菜的腐烂率、VC的降低及粗纤维的合成,提高了POD、SOD、APX的活性,减少了硝酸盐和亚硝酸盐的产生。贮藏90 d时带根捆叶处理组中VC的含量为0.45 mg/100g,可溶性蛋白的含量为0.88 mg/g。POD、SOD、APX、CAT活性分别为12.43、0.83 、25.12和1.21 U,分别是对照组的1.35、1.44、1.56、1.69倍。【结论】带根捆叶处理能较好的维持白菜的采后品质,提高了白菜的抗氧化能力,延缓了白菜腐烂,延长了白菜货架期。

Effects of Hanging Cellaring on Storage Quality of Chinese Cabbage in Winter in Southern Xinjiang

【Objective】 In order to explore the effects of different storage methods on quality and active oxygen metabolism of Chinese cabbage, different treatments were used to treat Chinese cabbage in Southern Xinjiang, and the effects of hanging cellars on decay and disease of Chinese cabbage were studied. 【Methods】 Hanging storage mode was adopted for storage, including bundling leaves with root, bundling leaves with root, cutting loose leaves with root and cutting loose leaves. 【Results】 Bundling with root and leaf could delay the decomposition rate, the decrease of VC and the synthesis of crude fiber, improve the activities of POD, SOD and APX, and delay the increase of nitrate content. The content of VC and soluble protein was 0.45 mg/100g and 0.88 mg/g in the root bundling group after 90 days of storage. The activities of POD, SOD, APX and CAT were 12.43 U, 0.83 U, 25.12 U and 1.21 U, respectively, which were 1.35, 1.44, 1.56 and 1.69 times of the control group, respectively. 【Conclusion】 Bundling leaves with root can maintain the postharvest quality of Chinese cabbage, improve the antioxidant capacity of fruit, delay the aging and decay of Chinese cabbage, and prolong the shelf life. This finding provides technical support for the new process of cabbage storage and transportation after harvest.