OENO IVAS 2019 banner
IVES 9 IVES Conference Series 9 OENO IVAS 9 OENO IVAS 2019 9 Analytical tools using electromagnetic spectroscopy techniques (IR, fluorescence, Raman) 9 CIEDE2000 colour difference value as a parameter for tracing the ageing process on wood aged spirits

CIEDE2000 colour difference value as a parameter for tracing the ageing process on wood aged spirits

Abstract

It is quite common nowadays to carry out analyses which allow to control the ageing of spirits that are aged in wood casks. Many control parameters have been previously studied, such as the concentration of different phenolic compounds or the Total Polyphenol Index, in order to better understand the ageing process of wood aged spirits. On the other hand, it is frequent to analyse as a physical parameter the colour of those spirit samples, by stating them as an array of three coordinates from various colour spaces as CIE L*a*b* or CIE L*C*H*. 

In year 2001, the International Commission of Illumination proposed and/or modified various mathematical formulas for measuring the colour difference between two different samples and named that parameter as CIEDE2000. This value allows to quantify, with a number within a range from 0 to 100, the visual difference between two colours and, at the same time, it stablishes some value ranges which give some information about how easy is by an observer to differentiate them by eye. 

Due to the ageing process in wood casks of alcoholic beverages produces changes on the intensity and on the hue of the colour, in the present work we proposed to study, by analysing the colour differences between various samples aged in different times, if the CIEDE2000 parameter could be used as a parameter on the tracing of the ageing process. 

To this end, kinetical analyses and statistical regressions were carried out over different wood-aged spirits samples, obtaining good R2 values in return, stating that colour difference values could be used as parameters to study and better comprehend the ageing process of beverages in wood casks.

DOI:

Publication date: June 23, 2020

Issue: OENO IVAS 2019

Type: Article

Authors

Manuel Jesús Delgado González, María de Valme García Moreno, Dominico Antonio Guillén Sánchez, Yolanda Carmona Jiménez, Manuel María Sánchez Guillén, Carmelo García Barroso 

Departamento de Química Analítica, Facultad de Ciencias, Instituto de Investigación Vitivinícola y Agroalimentaria (IVAGRO), Campus Universitario de Puerto Real, 11510, Puerto Real, Cádiz, Spain.

Contact the author

Keywords

Colour, Spirit, Wood, Ageing 

Tags

IVES Conference Series | OENO IVAS 2019

Citation

Related articles…

Grapevine sensitivity to fungal diseases: use of a combination of terroir cartography and parcel survey

In front of the economic interest and seeking to respect their environment, the wine growers move gradually towards a policy of reasoning their plant health protection. This is why, starting from epidemiologic studies on grapevine pathogens, forecasting models of the risks are developed by research and experimentation bodies.

Polyphenols in kombucha: Metabolomic analysis of biotransformations during fermentation

Kombucha is a non-alcoholic beverage made of sugared tea that is transformed by a symbiotic consortium of yeasts and bacteria. This beverage is increasingly produced at industrial scale, but its quality standards remain to be defined. Metabolomics analysis was carried out using FT-ICR-MS to understand the chemical transformations induced by the production phases and the type of tea on

Leaf removal to regulate fruit ripening in Cabernet-Sauvignon

Aim: Under the effects of climate change it is becoming increasingly common to observe excessively fast sugar accumulation while anthocyanin and flavour development are lagging behind. Understanding the impact of different leaf removal techniques on ripening will provide vineyard managers with a canopy management strategy suitable for

History of inorganic and isotopic signatures in Champagne over the last century: lessons

The notion of «terroir» refers to the link between the composition, quality and taste of a wine, on the one hand, and its place of origin, on the other. It involves, among other things, the signature of soil elements, as well as the influence of climatic conditions and plant material used. The composition of the wine is also influenced by the winemaking, storage and bottling processes. We were lucky enough to have a time series of the same champagne, from the end of the first world war to the present. On this exceptional time series, we followed, with the most advanced methods, all the elemental signatures by isotopic multi-dilution, the evolution of the isotopic ratios of heavy elements with very high precision of Sr, Pb, B and Cu.

Smoke tainted wine – what now?

The frequency of bushfires close to wine regions around the world has increased in the last two decades. The economic losses incurred when grapes and wines are discarded due to ‘smoke taint’ are substantial (i.e., hundreds of millions of dollars). Efforts to mitigate and ameliorate smoke taint are therefore crucial. Chardonnay, rosé and cabernet sauvignon wines made from grapes exposed to smoke during the 2020 wildfires in eastern Australia were subjected to various amelioration techniques: the addition of activated carbons, molecularly imprinted polymers (mips), and a proprietary resin (either directly, or following membrane filtration); spinning cone column (scc) distillation; and finally, transformation into vinegar.