IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 Application of a low-cost device VIS-NIRs-based for polyphenol monitoring during the vinification process

Application of a low-cost device VIS-NIRs-based for polyphenol monitoring during the vinification process


In red wine production, phenolic maturity is becoming increasingly important. Anthocyanins, flavonoids and total polyphenols content and availability significantly influence the harvest time of wine grapes while, during vinification process, their extraction strongly affects wine body, color and texture. The polyphenol presence in musts and wines, over that by the grape berry accumulation and the cellular maturity, is significantly influenced by maceration and fermentation techniques. To date, polyphenol evaluation is performed using destructive, laborious, expensive and often environmental unfriendly methods of analysis. Nowadays, companies that want to be competitive in a global market must necessarily undergo to a process of innovation and digital transformation. In this context, the GO-SmartData project (smart management of vineyard and cellar) aims to identify a rapid, economical, easy-to-use and non-destructive technologies for monitoring fermenting musts and wines. Here, the application of a low-cost mini-sensor based on Visible and Near Infrared (VIS-NIR) spectroscopy designed to operate into 19 selected spectral bands between 410 and 1720 nm is proposed. The prototype is designed to collect, directly from the wine tanks, data to be send to an in-cloud system (IoT) and computed into numerical values, according to predictive statistical modelling. The spectra detection through the VIS-NIR prototype has been performed on fermenting musts and aging wines concomitantly with analytical measurement of polyphenols. Predicting models were built using multivariate regressive approaches (PLS) which were then tested for accuracy and robustness in terms of correlation (R2), as well as potential errors (RMSEC, RMSEP). The VIS-NIR prototype shows quite promising performances and aptitudes for becoming an easy-to-use device destined to the on-line employment in the vinery environment


Publication date: June 23, 2022

Issue: IVAS 2022

Type: Article


Modesti Margherita¹, Alfieri Gianmarco¹, Pardini Luca², Cerreta Raffaele¹, Mencarelli Fabio²and Bellincontro Andrea¹

¹Department for innovation in biological, agro-food and forest system Tuscia University
²Department of Agriculture Food and Environment (DAFE), University of Pisa

Contact the author


Non-destructive analyses, spectrophotometry, polyphenols, NIR, phenolics


IVAS 2022 | IVES Conference Series


Related articles…

Il ruolo dei comuni nella gestione del territorio e nella tutela dei vitigni autoctoni di qualita’

Questo simposio organizzato dall ‘Associazione nazionale Città del Vino, che mi onoro di presiedere, è per me motivo di particolare soddisfazione perché porta a compimento parte di un percorso iniziato dall’associazione da alcuni anni e che ha un obiettivo apparentemente semplice: sollecitare gli amministratori delle Città del Vino a perseguire con tenacia, tal­volta anche con la necessaria caparbietà, programmi ed interventi che abbiano al centro, sempre, la qualità della vita dei loro territori.

Tracking of sulfonated flavanol formation in a model wine during storage

The aim of this work was to determine the reaction products of bisulfite with grape seed flavanols and changes therein over different storage conditions in a model wine

Role of Grape-Extractable Polyphenols in the Generation of Strecker Aldehydes and in the Instability of Polyfunctional Mercaptans during Wine Oxidation

Wine longevity is a complex multifactor phenomenon in which the weight of the different factors is not well known. One of the key factors of wine longevity is related to its resistance to oxidation. This property can be defined as the ability of the wine, under an exposure to oxygen, to keep its color, avoid accumulation of acetaldehyde and Strecker aldehydes (SA), and keep as long as

Impact of climate change on the viticultural climate of the Protected Designation of Origin “Jumilla” (SE Spain)

Protected Designation of Origin “Jumilla” (PDO Jumilla) is located in the Spanish provinces of Albacete and Murcia, in the South-eastern part of the Iberian Peninsula, where most of the models predict a severe impact of climate change in next decades. PDO Jumilla covers an area of 247,054 hectares, of which more than 22,000 hectares

Impact of press fractioning on Pinot noir and Pinot meunier grape juice and wine compositions and colour

The separation of different grape juice press fractions is an important step in the production of sparkling base wines. A complete press cycle for this style of wine is a series of pressure increases (squeezes) resulting in variations in juice composition during the press cycle. After alcoholic fermentation, wines obtained from grape juices also exhibit strong differences for numerous characteristics. Nevertheless, there is no statistical study of the impact of the press cycle on grape juices and wine colour/composition. So, the aim of this study (vintage 2018) was to investigate the changes in composition and colour parameters of Pinot noir and Pinot meunier grapes juices, as well as their corresponding wines, during the pressing cycle.