不同浓度CO2对箱式气调贮藏树莓保鲜效果的影响

以Heritage品种树莓作为试验材料,采用塑料气调保鲜箱,通过分析贮藏过程中箱内O2、CO2气体、果实感官及主要生化指标的变化,研究了不同体积分数CO2对树莓鲜果贮藏保鲜效果的影响。结果表明:CO2处理对箱式气调贮藏树莓的保鲜效果具有一定影响,其中,CO2体积分数为5%的处理,贮藏过程中箱内CO2和O2体积分数变化幅度均较小,果实PPO活性的升高和MDA的积累受到一定的抑制,果实POD活性维持了较高水平,贮藏至40d时果实色泽基本无变化,香气略变淡,仅个别果实表面有零星水珠出现。由此表明,CO2体积分数为5%更适宜树莓箱式气调贮藏,维持果实品质。

Effect of CO2 concentration on quality of raspberry stored in gas adjustment box

With the variety of Heritage raspberry as experimental material,the effect of CO2 concentration on quality of raspberry stored in gas adjustment box was studied by analyzing the concentration of O2 and CO2 in the box,sensory quality and biochemical changes on the fruit during storage.Results showed that it had some impact on storage effect by artificial filling different concentration of carbon dioxide,the treatment of 5% CO2 perform smaller changes in CO2 and O2 level,the increase of PPO activity and MDA accumulation were inhibited,the POD activity of rubus maintained at relatively high level.There were almost no change on color,aroma faded slightly,and only individual fruit surface had sporadic drops of water after stored for 40d.The results suggested that the treatment of 5% CO2 would be promising method for stored in gas adjustment box,and quality maintaining of raspberry.