terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Chemical and microbiological evaluation of Ribeiro wines (NW Spain)

Chemical and microbiological evaluation of Ribeiro wines (NW Spain)


Wine produced under Designation of Origin (DOP) Ribeiro, the oldest DOP in Galicia (NW Spain), are elaborated using local grape cultivars, grown at the valleys of Miño, Avia and Arnoia rivers. The landscape formed by slopes and terraces and the peculiar climate of continental character, softened by the proximity of Atlantic Ocean, make it an area of excellent aptitude for vine cultivation. In addition, small-scale farming and the use of traditional techniques for vineyard management provide a great diversity to Ribeiro wines. This study presents the evaluation of red and white wines (bottled or bulk wines) from DOP Ribeiro, produced between years 2018-2022. Standard parameters of wine and the presence of biogenic amines were determined using OIV methodology. Residues of fungicides and insecticides were assessed by liquid chromatography tandem mass spectrometry (LC-MS/MS). Volatile aroma compounds were extracted by LLE and determined by GC-MS. Microbiological control of the wines by filtration allowed to detect the presence of microorganisms and their potential risk on wine spoilage. The results confirmed the diversity of Ribeiro wines and their chemical quality at both desirable properties and health concerning. Thus, volatile composition analysis allowed to observe differences among vintages and valleys. The average content of biogenic amines was 4.89 mg/L, and only 12% of the samples exceeded 10 mg/L. Residues of authorized pesticides were often detected in most of wines at concentrations above 10 mg Kg-1, but below the maximum residues limits (MRLs) defined by the EU in vinification grapes. In addition, all wines were analyzed by 1H NMR spectroscopy and a preliminary model of the DO. Ribeiro was built with the spectra of white wines.

Acknowledgements: Project AC2021E-02, Consellería do Medio Rural – Xunta de Galicia with funds from FEADER, MAPAMA and CCAA Galicia.


Publication date: October 13, 2023

Issue: ICGWS 2023

Type: Poster


Pilar Blanco1*, Mar Vilanova2, Elvira Soto1, Bianca S. Costa2, Eva López-Rituerto3, Victoria Fernández-Fernández4, Isaac Rodriguez 4

1Estación de Viticultura e Enoloxía de Galicia (EVEGA-AGACAL), Ponte San Clodio s/n, 32428, Leiro-Ourense
2Instituto de Ciencias de la Vid y del Vino (CSIC, Universidad de La Rioja, Gobierno de La Rioja). Ctra. de Burgos, Km. 6. 26007 Logroño
3Estación Enológica de Haro, C\ Bretón de los Herreros, 4. 26200 Haro (La Rioja)
4Universidade de Santiago de Compostela (USC)-Instituto de Investigación en Análisis Químicos y Biológicos (IAQBUS), Constantino Candeira s/n, Campus Sur/Campus Vida, 15782 Santiago de Compostela

Contact the author*


DOP Ribeiro wines, volatiles, residues, biogenic amines, microbiological control


2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series


Related articles…

Typicality of Rioja wines: identification of sensory profiles for the three subregions of DOCa Rioja

Within the DOCa Rioja three main production areas are differentiated: Rioja Alta (RA), Rioja Alavesa (RAv) and Rioja Oriental (RO). They are three diverse territories with particular characteristics that are claimed to give rise to differentiated profiles. The present work aims at evaluating the sensory diversity of young commercial red wines in these three subregions. Therefore 30 young red wines (mainly Tempranillo and vintage 2021), ten from each subregion, were sensory described following a non-verbal free sorting task and a verbal free comment task by 32 well-established Rioja winemakers.

A comprehensive study on the effect of foliar mineral treatments on grapevine microbiota, flavonoid gene expression, and berry composition

Recently, foliar treatments with mineral-based compounds have shown positive effects on grapevine production by protecting grape from thermal excesses and reducing the decoupling between technological and phenolic maturity caused by climate change. Unraveling the effect of mineral particle applications on grape-associated microbes is pivotal for successful wine processing, due to the influence of the microbiota on wine composition and stability. To our knowledge, this is the first work that comprehensively studied the effects of kaolin and chabasite-rich zeolitites treatments on grape-related microorganisms (by real-time PCR quantification of total fungi, Hanseniospora uvarum, Metschnikowia pulcherrima, plant-associated bacteria and lactic acid bacteria), the expression of genes related to the flavonoid biosynthesis (PAL1, CHS1, F3H2, DFR, LDOX, UFGT, MYBA1, GST4, FLS4 genes) and the berry composition (°Brix, pH, acidity and anthocyanin concentrations) in cv. Sangiovese during ripening in two growing seasons (2019 and 2020).

Grape pomace, an active ingredient at the intestinal level: Updated evidence

Grape pomace (GP) is a winemaking by-product particularly rich in (poly)phenols and dietary fiber, which are the main active compounds responsible for its health-promoting effects. GP-derived products have been proposed to manage cardiovascular risk factors, including endothelial dysfunction, inflammation, hypertension, hyperglycemia, and obesity. Studies on the potential impact of GP on gut health are much more recent. However, it is suggested that, to some extent, this activity of GP as a cardiometabolic health-promoting ingredient would begin in the gastrointestinal tract as GP components (i.e., (poly)phenols and fiber) undergo extensive catabolism, mainly by the action of the intestinal microbiota, that gives rise to low-molecular-weight bioactive compounds that can be absorbed and utilized by the body.

Antimicrobial activity of oenological polyphenols against Gram positive and Gram negative intestinal multidrug-resistant bacteria

Bacterial antibiotic resistance is a major current health problem. Polyphenols have demonstrated antibacterial activity, and in this work we studied the effect of oenological polyphenols on the growth of intestinal multidrug-resistant strains of human and animal origin. Two Enterococcus faecium strains, resistant to vancomycin and other antibiotics, and four Escherichia coli strains, resistant to ampicillin and other antibiotics, were included in this study. All strains showed multidrug resistant phenotypes and genotypes to at least two antibiotic families.

Cumulative effect of deficit irrigation and salinity on vine responses

Climate change is increasing water needs in most of the wine growing regions while reducing the availability and quality of water resources for irrigation. In this context, the sustainability of Mediterranean viticulture depends on grapevine responses to the combinations of water and salt stress. With this aim, this work studies the effects of deficit irrigation and salinity on the physiology of the Tempranillo cultivar (Vitis vinifera L.) grafted onto a drought and salinity tolerant rootstock (1103 Paulsen).