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Results for “phenolic compounds”
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The phenolic compounds of white wines
Phenols can cause the browning of white wines.
By Charl Theron · 4 min read
Seeds and red wine phenolics (Part 1): Influence of seed number on phenolic levels in different grape varieties
In this study, three extraction methods were evaluated to assess phenolic compounds in red grapes with differing seed levels. These methods included the Glories method, the Iland method, and the recently developed hand-crushed method.
By Wessel du Toit, Asiphe Makalisa & José Luis Aleixandre-Tudo · 6 min read
Understanding and measuring tannins in red wines
The importance of phenolic compounds on wine quality require methods that accurately measure the tannin content.
By Jose Luis Aleixandre-Tudo, Mihaela Minhea and Wessel du Toit · 9 min read
A story of taste, colour and phenolics
Phenolic compounds are abundant in the plant kingdom. They are derived from phenol, which is the basic structure of all phenolic constituents and when containing one or more phenolic rings, they are generally referred to as polyphenols. These phenolic compounds play an essential role in the…
By Remi Schneider, Michel Moutounet and Elda Binneman · 7 min read
The pinking paradox
Pinking refers to the appearance of salmon or pink tones in white wines made from white grape varieties. It has been reported worldwide in cultivars such as Chardonnay, Chenin blanc, Sauvignon blanc, Sémillon, Pinot gris, Riesling and others. Its unfortunate timing is one of the reasons it is so…
By Karien O'Kennedy · 5 min read
Sparkling wine (Part 3): Phenolic composition of traditional style sparkling wine
PHOTO: Anthony Delanoix (Unsplash).
By Mpho Mafata, Astrid Buica, Wessel du Toit and Francois van Jaarsveld · 3 min read
Resolutions adopted by OIV
The 14th General Assembly of the International Organisation of Vine and Wine (OIV), which met on 28 October 2016 in Bento Gonçalves (Brazil), adopted a total of
By OIV · 7 min read
Analytical methods to measure grape metabolites - a review
This review presents a summary of the chromatographic methods that have been developed and optimised to accurately profile and quantify grape metabolites. The g
By Hans André Eyéghé-Bickong, Philip Young and Melané Vivier · 10 min read
New Winetech projects for 2017 (Part 1)
1. Modelling colour stability and ageing potential in SA red wines
By Winetech Editorial Team · 4 min read
