terclim by ICS banner
IVES 9 IVES Conference Series 9 OIV 9 OIV 2024 9 Short communications - Oenology, methods of analysis 9 Rapid quantification of higher alcohols in wine, port wine and brandy by HS-GC-FID

Rapid quantification of higher alcohols in wine, port wine and brandy by HS-GC-FID

Abstract

In response to the growing demand for rapid, precise, and efficient methods of quantifying volatile compounds in alcoholic beverages, this study presents a novel approach for the determination of higher alcohols in wine, port wine, and brandy. Optimized headspace gas chromatography with flame ionization detection (hs-gc-fid) method was used to quantify 9 compounds of interest including acetaldehyde, ethyl acetate, methanol, 2-butanol, n-propanol, isobutanol, allyl alcohol, n-butanol, and amyl alcohols (2-methyl-1-butanol and 3-methyl-1-butanol. The method uses minimal sample volume of 10 µl, requiring only 18 minutes analysis was found to be linear up to 800 mg l-1 for all compounds with an average relative standard deviation below 10% for tests of repeatability at low concentrations. No significant difference in concentrations of higher alcohols were observed when comparing the results of 9 different samples with the results obtained by the oiv method. The method represents a significant advancement in analytical techniques for the alcoholic beverage industry, offering a rapid method with minimum sample volume required for routine quality control. 

Rápida cuantificación de alcoholes superiores en vino, vino de oporto y brandy mediante HS-GC-FID

En respuesta a la creciente demanda de métodos rápidos, precisos y eficientes para cuantificar compuestos volátiles en bebidas alcohólicas, este estudio presenta un enfoque novedoso para la determinación de alcoholes superiores en vino, vino de oporto y brandy. Se utilizó el método de cromatografía de gases en fase gaseosa con detección por ionización de llama en espacio de cabeza optimizado (hs-gc-fid) para cuantificar 9 compuestos de interés, incluyendo acetaldehído, acetato de etilo, metanol, 2-butanol, n-propanol, isobutanol, alcohol alílico, n-butanol y alcoholes amílicos (2-metil-1-butanol y 3-metil-1-butanol). El método utiliza un volumen de muestra mínimo de 10 µl, requiriendo solo 18 minutos de análisis y se encontró que es lineal hasta 800 mg l-1 para todos los compuestos, con una desviación estándar relativa promedio por debajo del 10% para pruebas de repetibilidad en bajas concentraciones. No se observaron diferencias significativas en las concentraciones de alcoholes superiores al comparar los resultados de 9 muestras diferentes con los resultados obtenidos por el método oiv. El método representa un avance significativo en las técnicas analíticas para la industria de bebidas alcohólicas, ofreciendo un método rápido con un volumen de muestra mínimo requerido para el control de calidad de rutina.

Quantification rapide des alcools supérieurs dans le vin, le vin de porto et le brandy par HS-GC-FID

En réponse à la demande croissante de méthodes rapides, précises et efficaces pour quantifier les composés volatils dans les boissons alcoolisées, cette étude présente une approche novatrice pour la détermination des alcools supérieurs dans le vin, le vin de porto et le brandy. La méthode de chromatographie en phase gazeuse en tête avec détection par ionisation de flamme optimisée (hs-gc-fid) a été utilisée pour quantifier 9 composés d’intérêt, notamment l’acétaldéhyde, l’acétate d’éthyle, le méthanol, le 2-butanol, le n-propanol, l’isobutanol, l’alcool allylique, le n-butanol et les alcools amylés (2-méthyl-1-butanol et 3-méthyl-1-butanol). La méthode utilise un volume d’échantillon minimal de 10 µl, ne nécessitant que 18 minutes d’analyse et s’est révélée linéaire jusqu’à 800 mg l-1 pour tous les composés, avec un écart-type relatif moyen inférieur à 10% pour les tests de répétabilité à faibles concentrations. Aucune différence significative dans les concentrations d’alcools supérieurs n’a été observée lors de la comparaison des résultats de 9 échantillons différents avec les résultats obtenus par la méthode oiv. La méthode représente une avancée significative dans les techniques analytiques pour l’industrie des boissons alcoolisées, offrant une méthode rapide avec un volume d’échantillon minimal requis pour le contrôle qualité de routine.

DOI:

Publication date: November 18, 2024

Issue: OIV 2024

Type: Article

Authors

Olena Shevchuk1, Timon Huybrighs2 and Cristina Fernandes1

1 Sogrape Vinhos S.A., Rua 5 de Outubro, 4527, 4430-809 Avintes, Portugal
2 PerkinElmer, Inc., Imperiastraat 8, B-1930 Zaventem, Belgium

Contact the author*

Tags

Full papers OIV 2024 | IVES Conference Series | OIV | OIV 2024

Citation

Related articles…

Étude de la cinétique de transfert du 2,4,6-trichloroanisole (TCA) entre des bouchons en liège naturel et le vin – premiers résultats

The last step in winemaking is packaging the wines for market placement, while preserving the quality attained during vinification. Since the 1980s, 2,4,6-trichloroanisole (TCA) has been recognised as an incidental and random contaminant of cork, with its migration into wine thought to contribute to ‘cork taint’. This molecule is not a cork component and little is known about how it is formed on trees. Its formation from the chlorine used to wash the cork stoppers, long suspected, has been excluded by the abandonment of chlorine washing.

Big data analysis of pesticides from the vine to the winery

Of biocontrol products and resistant grape varieties, synthetic pesticides are still widely used to control fungal diseases and protect vines from potential damage caused by pests. The use of pesticides is strictly regulated, and their use can sometimes lead to transfer from the grapes to the must and then into the wine. The study of pesticide residues in grapes and wines is commonly carried out by wine producers in order, among other things, to optimize treatment routes, check that products comply with regulations, and ultimately guarantee the food safety of the wine.

Innovative approaches in the evaluation of the spatial and temporal biodiversity of grape varieties from the Portuguese Bairrada appellation using LIMM-PCA: a study across five harvests

Sustainable viticulture and winemaking continue to represent huge challenges, where a better knowledge about the functional role of biodiversity in the vineyard and wine ecosystems is required, as well as the varieties plasticity. Particular attention should be devoted to the spatial and temporal interactions between authorized or recommended varieties for a specific demarcated region and clime and vineyard conditions (such as soil type, orientation of the lines, age of the vine, density of planting, harvesting practices, among others).

Correlation between stable isotopic composition of the fungus aspergillus niger and its growth substrate and the extracted chitin

Wine is one of the most consumed and appreciated beverages in the world. Due to the growing attention paid to consumer health, there is a continuous search for sustainable alternatives to common additives (such as sulfur dioxide) used to preserve wine. An example is represented by chitosan, the main derivative of chitin, approved for the treatment of must and wine since 2009 by the “international organization of vine and wine” (OIV/OENO 338a/2009) and by the european commission (EC Reg. No. 606/2009).

Wine industry, digital transformation, and sustainability: a systematic literature 

This paper aims to (i) identify the state of the art regarding digital transformation in the transition to sustainability in the wine industry, (ii) analyze the adoption of digital technologies at different stages of the winemaking process and their contribution to the triple bottom line of sustainability, and (iii) present a research agenda that facilitates the development of the field, providing contributions to both literature and managerial practice.