terclim by ICS banner
IVES 9 IVES Conference Series 9 Volatile Organic Compound markers of Botrytis cinerea infection in artificially inoculated intact grape berries

Volatile Organic Compound markers of Botrytis cinerea infection in artificially inoculated intact grape berries

Abstract

The addition of partially dehydrated grapes to enrich must composition for producing complex dry/sweet wines represents a traditional practice in several regions of the world. However, the environmental conditions of dehydration chambers may facilitate the infection of Botrytis cinerea Pers. by promoting disease and provoking large grape losses. B. cinerea attack can induce alterations in the profile of volatile organic compounds (VOCs), which could be detected by sensors specifically trained to detect infection/disease-related compounds. These sensors could facilitate the early detection of the infection, consequently allowing to adjust some dehydration parameters. To deepen the understanding on alterations induced by B. cinerea on intact grape VOCs profile, berries from Sangiovese and Corvina cultivars were collected and analysed by SPME-GC-MS as such and following artificial inoculation with a spore suspension of B. cinerea (10 μl, 105 spores ml-1) or mock inoculation by using the same volume of sterile growth medium (control). Preliminary results have shown that high levels of a set of primary and secondary alcohols appeared to be emitted by inoculated berries. Some of these molecules are already reported as correlated with B. cinerea infection, while others are not mentioned as infection markers yet. Moreover, the dynamics of the emission of some of these compounds during the in vitro development of B. cinerea cultures have also been studied. Setting up sensors capable of detecting the identified volatile markers in the dehydration chambers represents an ambitious goal for reducing spoilage and grape losses via targeted interventions.

Download the abstract

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Pietro Emilio Nepi1*, Claudia Pisuttu2, Cristina Nali2, Elige Salame1, Pietro Tonutti1, Stefano Brizzolara1

1Crop Science Research Center, Scuola Superiore Sant’Anna di Studi Universitari, Piazza Martiri della Libertà,33,56127, PISA, ITALY
2Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80,56124, PISA, ITALY.(Left-aligned, italic, Arial 9)

Contact the author*

Keywords

grape, grey mould, VOCs, sensors, sustainability

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Oenological potential of indigenous greek grape varieties and their clones

Vine clone selection aims at the survival of clones with particularly desireable attributes for the production of high quality wines. The purpose of this research was to study the enological potential of the clones of Greek indigenous grape varieties over two vintages, 2018 and 2019.
METHODS: Two clones of the white grape varieties Moschofilero (E26 and E27), Assyrtiko (E11 and 16), Roditis (25E16 and 02E1E21) and two clones of the red grape varieties Xinomavro (19 and E2E30) and Agiorgitiko (03E40 and 41E47) were vinified under the same protocol for the white wines and common for the red wines in 2018 and 2019. The resulting products were studied for several enological parameters such as alcohol content, volatile acidity, pH, total phenolics, anthocyanins and tannins for the red wines, as well as browning tests for the white wines. The aroma profile of these ten samples was investigated through sensory analysis with intensity rating of individual attributes on a five-point scale by a trained panel.

Read More

Treated wastewater irrigation: how to manage water salinity without reducing its nutrients content?

Nutrients in municipal treated wastewater (N, P, K, mainly) are a particular advantage in this source over conventional irrigation water sources

Read More

Exploring the presence of oligopeptides in wines into identify possible compounds with umami or kokumi properties

Umami is defined as a pleasant and savory taste derived from glutamate, inosinate and guanylate, which are naturally present in meat, fish, vegetables and dairy products. The term “kokumi” refers to a complex flavour sensation, characterized by thickness, fullness and continuity.

Read More

Anthocyanin composition and sensory properties of wines from Portuguese and international varieties cultivated in a hot and dry region of Portugal

The study of anthocyanins in wines and grapes has been the subject of numerous research works over the years due to their important role in enology regarding their contribution to wine sensory properties.

Read More

Rootstock effects on cv. Ugni blanc berry and wine composition

In the Cognac region in France, Ugni blanc is the most planted grape variety (98% of the 80 500 ha). This vine region is in expansion due to the success of the associated well-known brandy and the need of high grape yield to guarrantee the production of base wine for distillation. About 2 to 3000 ha are newly planted each year and rootstocks are one powerfull tool for vineyard adaptation to soil or climate change. As rootstocks ensure water and mineral nutrient supplies to the scion, it is important to better understand their effect on berry compostionnal parameters such as sugars and nitrogen compounds, which are the main precursors for fermentary aroma metabolites, the latter being quality markers for Cognac after distillation.

Read More