IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 Antifungal and Laccase-Suppressing Activity of Phenolic Compounds and Their Oxidation Products on Grey Mold-Fungus Botrytis cinerea

Antifungal and Laccase-Suppressing Activity of Phenolic Compounds and Their Oxidation Products on Grey Mold-Fungus Botrytis cinerea

Abstract

Botrytis cinerea causes grey mold that results in severe problems for wine makers worldwide. Infected grapes lead to quality deterioration including formation of off-flavors or browning. The latter is caused by the enzyme laccase which is capable of oxidizing a wide range of phenolic compounds. Since the use of conventional pesticides is associated with many concerns of consumers and authorities regarding environmental and health related issues and may result in fungicide resistance, the development of green alternatives is gaining more attention. Phenolic compounds like ferulic acid or stilbens which serve as phytoalexins have shown promising results in terms of growth-inhibitory effects against B. cinerea. The present study focuses on further investigations of the antifungal and laccase-suppressing effects of these phenols and especially their laccase-derived oxidation products using the syringaldazine-assay for determination of the laccase activity. The results revealed that they can be considered as a sustainable alternative to synthetic fungicides for Botrytis cinerea management.

DOI:

Publication date: June 27, 2022

Issue: IVAS 2022

Type: Poster

Authors

Umberath Kim Marie1, Schieber Andreas1 and Weber Fabian1

1University of Bonn, Institute of Nutritional and Food Sciences, Molecular Food Technology

Contact the author

Keywords

Botrytis cinerea, laccase, phenolic compounds, oxidation products, antifungal activity

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

Productivity, quality, and thermal needs of the Piedirosso vine: four years of observations

The effects of temperature on cv Piedirosso, indigenous of the Campania region (South of Italy), were tested in order to study its possible influence on grapevine and to discover how to optimize the qualitative expression
Read More

Variability of Tempranillo phenology within the toro do (Spain) and its relationship to climatic characteristics

Aims: The objective of this research was to analyse the spatial and temporal variability of vine phenology of the Tempranillo variety in the Toro Designation of Origen (DO) related to climatic conditions at present and under future climate change scenarios.

Read More

Wine shaking during transportation: influence on the analytical and sensory parameters of wine

According to OIV reports, annual world wine consumption fluctuated around 240-245 mln hL over the past decade. The general market globalization has led to the situation when almost half of the consumed wine is exported to other countries. Of this volume, more than 60 mln hL are bottled still and sparkling wines.

Read More

The effect of pedoclimatic conditions on the yeast assimilable nitrogen concentration on white cv. Doral in Switzerland

Aims: Agroscope investigated the efficiency of nitrogen fertilization via foliar urea application at veraison with the aim of raising the YAN (yeast assimilable nitrogen) content in the musts. The observations were conducted on the white grapevine cultivar Doral (Chasselas x Chardonnay) in several pedoclimatic conditions of the Leman wine region, Switzerland, in the years 2012 and 2013. Knowing that the YAN in must plays a key role in wine quality, the aim was finding the main parameters affecting the final YAN level in order to better control them.

Read More

Marketing terroir wines

The markets for quality wine are becoming more competitive as newer producers emerge and traditional producers improve their quality. The concept of terroir is one way to differenzi­ate wines in a competitive market and to enhance producer income.

Read More