摘要
通过对苹果、碰柑等自然低温下和桃货架温度下涂 PVA复合剂贮藏和贮期跟踪测定发现 ,PVA复合剂分别可减少两类贮温下果实贮期失水 70 %、5 0 %以上 ,保鲜率提高 5 .3%～ 2 4.8%。贮期处理果的呼吸强度不同程度得以降低。经该剂处理的桃对贮放环境 O2 的消耗量始终低于对照 ,而 CO2 的积累量则始终高于对照 ,果实内部CO2 浓度增长较快。伴随着 Vc氧化酶活性的下降 ,处理果 Vc含量持续大于对照。
The natural low temperature storage (NLTS) of apple, orange, and shelf storage of peach revealed that the water loss rate of fruits coated with polyvinyl alcohol (PVA) compound product under these two conditions were 70%,50% less than that of control respectively. Their preservative rate were 5.3% ～24.8% higher. Compared with control generally ,the respiration intensity of treated fruits were lower; The density of oxygen surrounded treated peach was always higher , the density of carbondioxide was in reverse;whereas the inner carbondioxide was more and more by days. The quicker decrease of ascorbic acid oxydase of treating resulted in a higher ascorbic acid level.
出处
《水土保持研究》
CSCD
2000年第1期109-112,共4页
Research of Soil and Water Conservation
基金
国家"九五"重点科技攻关计划项目!编号为 96-004-05-07
关键词
PVA复合剂
水果保鲜
生理效应
PVA compound product fruit preservation harvest physiology
