香蕉果实采后成熟过程中苹果酸脱氢酶(MDH)及苹果酸含量的变化  

Changes of Malate Dehydrogenase and Malic Acid content during the Ripening of Banana Fruit

作　　者：邓秋菊[1,2] 刘菊华[2] 金志强[2,3] 徐碧玉[2] 

机构地区：[1]海南大学农学院,海南海口570228 [2]中国热带农业科学院热带生物技术研究所/农业部热带作物生物技术重点开放实验室,海南海口571101 [3]中国热带农业科学院海口实验站,海南海口570102

出　　处：《热带农业科学》2011年第7期34-38,共5页Chinese Journal of Tropical Agriculture

基　　金：现代农业产业技术体系建设专项资金(No.CARS-32)

摘　　要：以巴西香蕉果实为材料,研究果实采后正常成熟过程中乙烯释放速率,苹果酸脱氢酶(MDH)活性,苹果酸、淀粉以及可溶性总糖含量的变化。结果表明:香蕉果实采后成熟过程中乙烯释放速率在采后10d开始增加,到采后14d达到高峰;MDH酶活性在采后10d迅速增强,到采后16d达到峰值;苹果酸含量在果实成熟早期上升,晚期下降,可溶性总糖含量逐渐增加,而淀粉含量持续下降。推测MDH通过改变香蕉品质而参与果实成熟。Th e changes of ethylene production,MDH activity,malic acid content,starch content and soluble sugar content were investigated during the ripening of banana fruit.The result showed that ethylene production started to increase at 10d after postharvest and peaked at 14d after postharvest.MDH activity rapidly enhanced at 10d after postharvest and peaked at 16d after postharvest.The malic content increased at early mature and decline at late mature.The soluble sugar content gradually increased,but starch content continually decreased during the ripening of banana fruit.This result suggested that MDH participated in the ripening of banana fruit by changing the quality of banana fruit.

关 键 词：香蕉 苹果酸脱氢酶 苹果酸 成熟 

分 类 号：S554.9[农业科学—作物学] S668.1