Antifungal effects of thymol and salicylic acid on cell membrane and mitochondria of Rhizopus stolonifer and their application in postharvest preservation of tomatoes.

Abstract:

:This study investigated effects of the simultaneous application of thymol and salicylic acid (SIMTSA) on the target sites of Rhizopus stolonifer, as well as the defenceenzymes of postharvest tomato, when applied as edible coating. SIMTSA induced the changes of ultrastructure and membrane integrity of R. stolonifer. When the concentrations of the fungistat increased, cells stained with propidium iodide and leakage of 260/280 nm-absorbing materials increased while ergosterol synthesis decreased, suggesting damage of cell membrane. Furthermore, SIMTSA treatment significantly reduced the citric acid content and the activities of enzymes related to the tricarboxylic acid cycle, and increased the mitochondrial membrane potential and the reactive oxygen species, indicating damage of mitochondrial-related functions. Moreover, SIMTSA edible coating increased the defence enzyme activities in tomato. Based on the results, SIMTSA can be used as a potential preservation method for tomato as it showed a targeted effect on the cell membrane and mitochondria of R. stolonifer.

journal_name

Food Chem

journal_title

Food chemistry

authors

Kong J,Zhang Y,Ju J,Xie Y,Guo Y,Cheng Y,Qian H,Quek SY,Yao W

doi

10.1016/j.foodchem.2019.01.099

subject

Has Abstract

pub_date

2019-07-01 00:00:00

pages

380-388

eissn

0308-8146

issn

1873-7072

pii

S0308-8146(19)30167-0

journal_volume

285

pub_type

杂志文章