Macrowine 2021
IVES 9 IVES Conference Series 9 Wine microbial diversity and cross-over applications: emerging results and future perspectives

Wine microbial diversity and cross-over applications: emerging results and future perspectives

Abstract

AIM: Cross-over applications are an emerging technological approach in food microbiology where a microorganism from one traditional specific fermentation process is used to improve quality and safety in another agri-food production/chain (Dank et al., 2021). A complex microbial diversity is found in association with fermentation in wine, including Saccharomyces, non-Saccharomyces and malolactic bacteria,  all microorganisms versatile in terms of enological utilisation (Tempère et al., 2018). Here, we propose a systematic literature review highlighting the existing trends and possible future applications related to cross-over exploitation of wine-related microbiota.

METHODS: Systematic review of the scientific literature, including the evaluation of data from ongoing research projects (‘INVISPUBA’, ‘SPUMAPULIA’ and ‘BE^2R projects, funded by Apulian Region throughout P.S.R. 2014/2020 -Misura 16.2).

RESULTS: For decades, a continuous effort has been carried out worldwide to preserve and exploit the microbial diversity associated with traditional wines and Geographical Indications, including studies on specific autochthonous grape varieties. The oenological significance of an impressive number of eukaryotic and prokaryotic strains have been assessed, including their effects on dessert, flor and sparkling wines. Often these biological resources are preserved in culture collections, favouring exchanges in food uses (De Vero et al., 2019). The review proposes an overview of the phenotypic characteristics of wine microbes of potential interest for the design of cross-over strategies, with the desired modulation of ‘food qualities’ and safety enhancement. The application of wine strains as a sustainable driver of innovation in other fermented foods (e.g. bread) (Capozzi et al., 2016), alcoholic beverages (e.g. bread and fruity wines) (Agarbati et al., 2020; Canonico et al., 2021; Vilela et al., 2020), and for the development of new fermented products is discussed.

CONCLUSIONS: The proposed overview of the scientific literature i) underlines a high potential of innovation related to wine ‘microbiodiversity’ and ii) emphasises the importance of culture collections in the light of cross-over applications. The review also underlines the chance to explore innovative regional paths exploiting the exchange of microbial resources from traditional fermented products to other agri-food chains.

DOI:

Publication date: September 3, 2021

Issue: Macrowine 2021

Type: Article

Authors

Vittorio Capozzi, Nicola DE SIMONE,  Mariagiovanna, FRAGASSO, Bari. Franco, Giuseppe, SPANO, Maria TUFARIELLO, Pasquale RUSSO, Giancarlo, PERRONE, Lecce Francesco

Institute of Sciences of Food Production, National Research Council of Italy (CNR) – Foggia, Department of Agriculture, Food, Natural Science, Engineering, University of Foggia. Department of Agriculture, Food, Natural Science, Engineering, University of Foggia. Institute of Sciences of Food Production, National Research Council of Italy (CNR), BIASIOLI, Research and Innovation Centre, Fondazione Edmund Mach. Department of Agriculture, Food, Natural Science, Engineering, University of Foggia. Department of Agriculture, Food, Natural Science, Engineering, University of Foggia. Institute of Sciences of Food Production, National Research Council of Italy (CNR), GRIECO, Institute of Sciences of Food Production, National Research Council of Italy (CNR) – Lecce

Contact the author

Keywords

non-saccharomycessaccharomyces, malolactic bacteria, wine, sparkling wine, microbial terroir, beer, fruity wine, bread, quality, safety

Citation

Related articles…

Firmness of the grapes. Mechanical tests and definition of indices. Study of the evolution of berry skin resistance during alcoholic fermentation

The mechanical strength or firmness of a fruit is considered an important parameter to characterize its state of maturity or conservation, as other parameters such as sugar level or color.

Untangle berry shrivel environmental risk factors and quantify symptoms with AI – GeomAbs meets BAISIQ

Berry Shrivel (BS, Traubenwelke) is a sugar accumulation disorder of grapevine of unknown causes, having a great negative impact on grape quality and incalculable risks for yield losses, and for which no reliable curative practices are available.

Reusable system for wine bottles: An analysis of acceptance among German wine consumers

Consumer demands for environmentally friendly products, including wine, are constantly increasing.

From the “climats de Bourgogne” to the terroir in bottles

From a chemical composition point of view, wine is the result of complex interplays between environmental, genetic and human factors. The notion of terroir in viticulture involves the vine and its environment, including phenology, geography, geology, pedology and local climate of a vineyard, along with human inputs.

Grape berry size is a key factor in determining New Zealand Pinot noir wine composition

Making high quality but affordable Pinot noir (PN) wine is challenging in most terroirs and New Zealand’s (NZ) situation is no exception. To increase the probability of making highly typical PN wines producers choose to grow grapes in cool climates on lower fertility soils while adopting labour intensive practices. Stringent yield targets and higher input costs necessarily mean that PN wine cost is high, and profitability lower, in line-priced varietal wine ranges. To understand the reasons why higher yielding vines are perceived to produce wines of lower quality we have undertaken an extensive study of PN in NZ. Since 2018, we established a network of twelve trial sites in three NZ regions to find individual vines that produced acceptable commercial yields (above 2.5kg per vine) and wines of composition comparable to “Icon” labels. Approximately 20% of 660 grape lots (N = 135) were selected from within a narrow juice Total Soluble Solids (TSS) range and made into single vine wines under controlled conditions. Principal Component Analysis of the vine, berry, juice and wine parameters from three vintages found grape berry mass to be most effective clustering variable. As berry mass category decreased there was a systematic increase in the probability of higher berry red colour and total phenolics with a parallel increase in wine phenolics, changed aroma fraction and decreased juice amino acids. The influence of berry size on wine composition would appear stronger than the individual effects of vintage, region, vineyard or vine yield. Our observations support the hypothesis that it is possible to produce PN wines that fall within an “Icon” benchmark composition range at yields above 2.5kg per vine provided that the Leaf Area:Fruit Weight ratio is above 12cm2 per g, mean berry mass is below 1.2g and juice TSS is above 22°Brix.