【摘要】 对青花菜采用不同厚度聚乙烯薄膜包装的贮藏效果及其生理影响进行了研究。薄膜厚度分别为：0．02 mm（M1），0．04 mm（M2），0．06（M3），0．08 mm（M4），对照（Mck）即无薄膜包装贮藏。贮藏温度（0±0．5）℃ ，相对湿度90％～95％。研究结果表明，不同厚度薄膜内积累CO2的浓度差异显著；有膜包装的贮藏效果好于无膜包装；较厚薄膜包装处理的气调效果好于较薄膜包装处理。青花菜贮藏过程中，适宜的CO2浓度为5％～10％。提高CO2浓度对青花菜有抑制呼吸，抑制乙烯释放，推迟乙烯高峰的出现和抑制叶绿素分解的作用。更多还原

【Abstract】 ：The storage property and physiolgical changes of Brassica oleroea Var． Italica packed in polyethylene（PE）bags with different thickness were studied．The thickness of film was 0．02mm，0．04mm，0．06mm，and 0．08mm respectively．The control was the treatment that the products were stored in air．All the Brassica heads were stored in cold chamber（0±0．5）℃，RH90％～95％．The results showed that the CO2 contents accumulated in the PE bags with different thickness were significantly different．All the packaging treatments had better results than the control while thicker bags had better results than thinner ones．The optimal CO2 concentration for Brassica storage was a range within 5％～10％．The resperation rates and ethylene production and chlorophyll degradation could be inhibited and delayed by increase in CO2 concentration．更多还原