by Valeria Panzeri, Gonzalo Garrido-Banuelos & Astrid Buica | 1 Jun, 2020 | Oenology research, Winetech Technical
This work is part of a comprehensive study conducted at the Department of Viticulture and Oenology and aimed at shedding light on the thiol composition of Chenin blanc and various red cultivars using chemical and sensory tools. Background Wine quality is an...
by Albert Strever | 1 Apr, 2020 | Oenology research, Winetech Technical
Although salinity or sodicity may be localised to certain production areas, the study aimed to provide insight into the potential impact of cations and anions in wine and its origins, from a positive, as well as potentially negative perspective. Introduction...
by Heinrich du Plessis, Maret du Toit, Hélène Nieuwoudt, Marieta van der Rijst, Justin Hoff & Neil Jolly | 1 Mar, 2020 | Oenology research, Winetech Technical
This article is a shortened version of the scientific paper published in Fermentation.1 The aim of this study was to determine the effect Hanseniaspora uvarum in combination with Saccharomyces cerevisiae, lactic acid bacteria and two malolactic fermentation strategies...
by Isaac Rigau, Susan Erasmus & Alana Seabrook | 1 Jan, 2020 | Oenology research, Winetech Technical
Republished with permission from Wine and Viticulture Journal, Autumn 2019. In 2009, Laffort developed a protein derived from potatoes as an alternative to animal-based fining products. The results of trials using the protein as a flotation adjuvant and the...
by Anel Blignaut | Oenology research, Viticulture research
Benchmark Report 2019
by Leanie Louw, Jeanne Brand & Hélène Nieuwoudt | Oenology research, Winetech Technical
Why do some wines fly off the shelves, while others move slowly? Many factors influence whether a consumer will buy a wine, e.g. availability, price point, discounts, accolades and recommendations. In a study conducted in the USA, the researchers found that most...
by Astrid Buica, Sebastian Vannevel & Wessel du Toit | Oenology research, Winetech Technical
The goal of this study was to set up a method for the determination of reductive sulphur compounds in order to offer an additional sensitive and reliable tool for investigations. This will allow not only the usual positive aromas to be evaluated (esters, higher...
by Carien Coetzee | 1 Dec, 2019 | Oenology research, Winetech Technical
As research and development projects increasingly focus on packaging (especially closures) effects on random and premature oxidation of wine, it is timely to consider some recent findings regarding the role of bottle dimensions and its contribution to this issue....
by OIV | Oenology research, Viticulture research, Winetech Technical
The 17th General Assembly of the International Organisation of Vine and Wine (OIV), which met on 19 July 2019 in Geneva (Switzerland), adopted a total of 18 resolutions. Decisions on viticulture and the environment In the field of viticulture, the OIV adopted...
by Caitlyn McCartney | 1 Nov, 2019 | Oenology research, Winetech Technical
This article summarises the “dark side” of microbial transformation that can only be prevented by the watchful eyes, and if needed, interventionist actions of winemakers. Bacterial spoilage Oenococcus utilises malic acid to produce lactic acid, making it the...
by Florian Bahut, Anthony Silvano, Nathalie Sieczkowski, Christian Coelho, Maria Nikolantonaki, Philippe Schmitt-Kopplin & Régis Gougeon | Oenology research, Winetech Technical
In this article we present research work carried out in collaboration with the University of Burgundy, which has highlighted the impact of a new specific inactivated yeast developed for the protection of musts and wines against oxidation. Introduction White and...
by Astrid Buica, Aléta Bruwer & Wessel du Toit | 1 Oct, 2019 | Oenology research, Winetech Technical
In this three part series, we explore some fundamental aspects of sulphur and nitrogen foliar fertilisation and the chemical and sensory results of a recent project that took place in South Africa. This last part of the series focuses on the effects of the nitrogen...
