|Table of Contents|

Effects of ETH,ABA and EtOH on Softening and Regulatory Enzyme Activities in Postharvest Oriental Melon

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年21
Page:
100-108
Research Field:
Publishing date:

Info

Title:
Effects of ETH,ABA and EtOH on Softening and Regulatory Enzyme Activities in Postharvest Oriental Melon
Author(s):
LI Xiang; XIONG Yanan; JIN Yazhong; HE Shuping; SHENG Yunyan; LIU Fang
(College of Horticulture and Landscape,Heilongjiang Bayi Agricultural University,Daqing,Heilongjiang 163319)
Keywords:
oriental melon; fruit softening; ethylene; ethanol; ABA; enzyme activity
PACS:
-
DOI:
10.11937/bfyy.20211333
Abstract:
The oriental melon fruits were used as experimental materials，and stored at room temperature （23±1）℃ after treated with ethylene (ETH),abscisic acid (ABA) and ethanol (EtOH)，the changes of the firmness and the enzyme activity of oriental melon fruits during storage were studied，in order to provide theoretical basis for maintaining the quality of oriental melon fruits，perfect and apply the technique of fresh-keeping technology.The results showed that the fruit firmness of oriental melon showed decreasing trend during storage.Treatments with ABA significantly affected the fruit firmness,which seemed to be related to the activities of PG,PME,β-gal,EGase and amylase.It mainly promoted the activities of EGase and amylase in fruits during the early storage period,accelerated the decomposition of pectin and starch,and promoted the softening of the fruits during the early storage period.However,treatment with ETH decreased the fruit firmness,which were negatively related with the activities of PG and β-Gal in fruits,ABA and ETH treatments could affect fruit firmness by increasing LOX activity and electrical conductivity in the early stage of fruit storage,and there might be an effect of hydroxyl radical oxidation on fruit firmness.In the late storage period，ABA and ETH treatments had similar effects on fruit softening.Treatment with EtOH delayed the increasing of soluble pectin,soluble sugar and electrical conductivity of the fruits,and maintains the firmness of the oriental melon fruit by inhibits the activities of PG,PME,β-Gal,EGase,amylase and LOX.In conclusion,there were differences in the enzyme regulation systems of ABA and ETH regulating the softening of melon fruit,whereas EtOH could inhibit the effect of hydroxyl free radicals by reducing the activity of pectin and starch metabolism enzymes,thereby slowed the fruits softening process and maintaining the fruit firmness.

References:

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Last Update: 2022-01-29