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Investigations on the production of specific metabolites of Penicillium expansum on grapes and development of an analytical marker for quality assurance of grape products (Investigations on the production of specific metabolites of Penicillium)
Project
Project code: 2820HS004
Contract period: 01.08.2020
- 31.07.2023
Budget: 103,989 Euro
Purpose of research: Applied research
Keywords: health-related consumer protection, food safety, plant diseases (virusus, bacteria, fungi, phytoplasma), fungal cultures, product safety, quality management, vine, secondary crop ingredients, viticulture (winery)
P. expansum is one of the most important pathogens on fruits and vegetables worldwide. On grapes the fungus is responsible for the green mold symptoms. The metabolites produced by P. expansum can be relevant to the sensory mistakes (e.g. geosmin) as well as to health concerns (mycotoxins, e.g. patulin, citrinine) in grape products. Up to now it`s not possible to define a damage threshold based on the visual symptoms on the grapes. The assessment of the health-related burden in harvested material is carried out by analytical methods in the laboratory. Within the food quality controls analyzes are limited to individual metabolites, focused on mycotoxins that are regulated by maximum levels. Since the production of the metabolites by the fungus is dependent on numerous biotic and abiotic factors, the negative chemical analysis of one toxin is no proof for quality assurance of the grape products, since an exposure to other toxins may still be possible. An analytical marker that is reliably produced by P. expansum should be a useful tool in quality analyses of grape products. Within the project 2810HS016 a promising analytical marker could already be analyzed. First investigations promised a specific and reliable production of the compound by P. expansum. The aim of the project is to develop an analytical marker for the market use, and the definition of a damage threshold for green mold on grapes.
Section overview
Subjects
- Crop Protection
- Viticulture
