不同浓度CO_(2)对玉露香梨贮藏品质的影响  

Effects of Different Concentrations of CO_(2) on Storage Quality of Yuluxiang Pear

作　　者：黄丽 杨志国 任会会 张立新 HUANG Li;YANG Zhiguo;REN Huihui;ZHANG Lixin(College of Food Science and Engineering,Shanxi Agricultural University,Taiyuan Shanxi 030031,China)

机构地区：[1]山西农业大学食品科学与工程学院,山西太原030031

出　　处：《果树资源学报》2024年第3期28-35,共8页Journal of Fruit Resources

基　　金：山西省重点研发计划项目(202102140601017);山西省农业科学院农业科技创新工程项目(YGC2019TD05)。

摘　　要：【目的】以玉露香梨为试材,研究分析不同浓度CO_(2)气调贮藏对玉露香梨采后贮藏品质的影响。【方法】在低温贮藏(0℃)的0、60、120、180、240 d及常温贮藏(20℃)14 d时分别测定不同浓度CO_(2)处理下玉露香梨果实品质相关指标。【结果】各处理下玉露香梨果实随着贮藏时间的增加,硬度都呈下降的趋势,失重率呈升高趋势,2%CO_(2)处理的果实硬度较其他组最高,失重率较其他组最低。2%CO_(2)的气调贮藏在一定程度上可以延缓玉露香梨果实相对电导率、丙二醛含量、过氧化氢含量的升高,有效抑制了维生素C含量和抗坏血酸过氧化物酶活性的降低。当CO_(2)浓度为10%时,会对玉露香梨果实造成伤害,导致果实失重率、相对电导率增幅加大,果心果肉中过氧化氢积累过量。玉露香梨果心丙二醛的含量约为果肉的2倍,果心过氧化氢、维生素C的含量约为果肉的10倍。【结论】2%CO_(2)处理的玉露香梨保鲜效果最好。【Objective】The effects of different concentrations of CO_(2) on postharvest storage quality of Yuluxiangpear were studied and analyzed.【Methods】The relevant indexes of Yuluxiang pear treated with different concentrations of CO_(2) were determined at 0,60,120,180,240 days of low temperature storage(0 ℃)and 14 days of normal temperature storage(20 ℃).【Results】With the extension of storage time,the fruit hardness of all treatments showed a decreasing trend,and the weight loss rate showed an increasing trend.The fruit hardness of 2% CO_(2) treatment was the highest and the weight loss rate was the lowest.Air-conditioned storage of 2% CO_(2) can delay the increase of relative conductivity,malondialdehyde content and hydrogen peroxide content in the fruit to a certain extent,and effectively inhibit the decrease of vitamin C content and ascorbate peroxidase activity.When CO_(2) concentration is 10%,it will cause damage to Yuluxiangpear fruit,resulting in increased weight loss rate and relative electrical conductivity of fruit,and excessive hydrogen peroxide accumulation in fruit core pulp.The content of malondialdehyde in the heart of Yuluxiang pear is about 2 times that in the flesh,the content of hydrogen peroxide and vitamin C in the heart is about 10 times that in the flesh.【Conclusion】Yuluxiangpear treated with 2% CO_(2) has the best fresh-keeping effect.

关 键 词：玉露香梨 气调贮藏 品质 

分 类 号：S661.2[农业科学—果树学]