摘要:
研究低温条件下气调处理对新疆骏枣贮藏品质的影响,为解决骏枣贮藏保鲜提供理论依据。以骏枣为试材,将0℃预冷后的骏枣置于5种不同气体组分的PE袋中,通过分析-1℃贮藏期间骏枣呼吸强度、电导率、总糖等9项品质指标变化,筛选适宜的气调处理方法。结果表明,1%CO2+3%O2和1%CO2+5%O2处理可降低枣果实呼吸强度26.76%32.94%,且1%CO2+5%O2处理推迟10 d出现呼吸峰值;降低乙烯释放峰值约22.56%,分别推迟10 d和20 d出现峰值;延缓相对电导率的上升,分别是对照组的85.77%和73.49%,有利于保护膜系统的完整性;减缓了总糖和总酸的下降,具有较好的贮藏效果。
Abstract:
The paper intended to study the effects of controlled atmosphere on post-harvest quality of Xinjiang Zizyphus junzao-Jujuba Mill. during cold storage,to provide scientific basis for choose appropriate methods for fresh-keeping of Jujuba. Jujuba were selected as the materials to precoolling under 0 ℃,and packaged in PE bags that were filled by five different ratios CO2 and O2,and then stored at-1 ℃. Nine indexes were analysed by different treatments during storage,such as fruit respiration rate,relative conductivity and total sugar so as to screen appropriate treatment. It was showed that both 1% CO2+5% O2 and 1% CO2+3% O2 had remarkable effects which could reduce the respiration 26.76%~32.94% and even the treatment 1% CO2+5% O2 could delay the peak value to rise after a fall for 10 days. And then,the two ratios could reduce the ethylene production about 22.56% and even could delay the peak value to rise after a fall for 10 days and 20 days respectively,delay relative conductivity to ascend with 85.77% and 73.49% respectively. The treatments were helpful to protect the integrity of the cell membrane system,prelong the fresh time and slow the decline of total sugar and total acid,and also had proper storage effectiveness.
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