The effects of octyl gallate on Ustilago maydis yeast cells were analysed in relation to its capacity to oxidize compounds (pro-oxidant actions). All phenolic compounds tested inhibited the alternative oxidase (AOX). However, only octyl gallate induced a morphological change in yeast cells and collapsed the mitochondrial membrane potential. In contrast to octyl gallate, propyl gallate and nordihydroguaiaretic acid caused only a negligible cell change and the membrane potential was not affected. Our findings show that structurally related phenolic compounds do not necessarily exert similar actions on target cells. Preincubation of U. maydis cells with trolox inhibited the change to pseudohyphal growth produced by octyl gallate. These results suggest that in addition to the inhibitory action of octyl gallate on the AOX, this compound induces a switch from yeast to a mycelium, probably through the formation of lipid peroxides.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1099/mic.0.020800-0 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Inactivation activity and mechanism of high-voltage pulsed electric fields combined with antibacterial agents against Alicyclobacillus spp. in apple juice.
Int J Food Microbiol
January 2025
College of Food Science and Engineering, Northwest University, Xi'an, Shaanxi 710069, China. Electronic address:
Alicyclobacillus spp. are crucial factors affecting the quality of fruit juice, so it is very important to control their contamination. In this study, the inactivation activity and mechanism of high-voltage pulsed electric fields (HVPEF) combined with antibacterial agents against Alicyclobacillus spp.
View Article and Find Full Text PDFPathways of Oxygen-Dependent Oxidation of the Plastoquinone Pool in the Dark After Illumination.
Plants (Basel)
December 2024
Institute of Basic Biological Problems of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", 142290 Pushchino, Russia.
The redox state of the plastoquinone (PQ) pool in thylakoids plays an important role in the regulation of chloroplast metabolism. In the light, the PQ pool is mostly reduced, followed by oxidation after light cessation. It has been believed for a long time that dark oxidation depends on oxygen, although the precise mechanisms of the process are still unknown and debated.
View Article and Find Full Text PDFHydrolysis and transport characteristics of starch inclusion complexes with long-chain alkyl gallates: Controlled two-step release of gallic acid and retardation of starch digestion.
Int J Biol Macromol
January 2025
SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China. Electronic address:
Corn starch inclusion complexes of alkyl gallates (typical phenololipid representatives), including stearyl gallate, dodecyl gallate, octyl gallate, and hexadecyl gallate, were synthesized by using a heat treatment method. Such inclusion complexes exhibited significantly improved two-step release properties for gallic acid. In other words, gallic acid was generated via the breakdown of alkyl gallates that were released from inclusion complexes in an everted rat intestinal sac model, as determined by HPLC-UV analysis.
View Article and Find Full Text PDFThe potential mechanisms and material basis of Fuzheng Jiedu decoction broad-spectrum inhibiting coronaviruses.
Virol Sin
December 2024
College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:
Traditional Chinese medicine has unique advantages in preventing and treating COVID-19, and Fuzheng Jiedu decoction (FZJDD) was reported to be effective against COVID-19 in clinical trials. To investigate the potential mechanisms and material basis of FZJDD against SARS-CoV-2, we performed SARS-CoV-2 target protein inhibition analyses and a metabolite full spectrum analysis of FZJDD. Interestingly, FZJDD was found to block the binding of SARS-CoV-2 Spike protein with the receptor ACE2 and inhibit the activity of SARS-CoV-2 3CLpro.
View Article and Find Full Text PDFAntimicrobial activity of octyl gallate nanoemulsion combined with photodynamic technology and its effect on food preservation.
Int J Food Microbiol
February 2025
Faculty of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China. Electronic address:
Photodynamic inactivation, as a safe and effective antimicrobial technology that does not damage the organoleptic properties of the food itself, decreases the use of preservatives and is gradually gaining attention in the food industry. This study selected octyl gallate (OG) as an antimicrobial photosensitizer with eucalyptus oil as the oil phase and prepared it as an octyl gallate nanoemulsion (OG-NE) to ensure the delivery of the photosensitizer. Escherichia coli and Staphylococcus aureus inactivation with the OG-NE combined with photodynamic technology, as well as the effect on the quality of food products, was investigated.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!