WOMEN TASTE BETTER

Lauren Eads - 20 May 2018

A study at the Technical University of Madrid has added further weight to the theory that women are naturally better wine tasters than men. Researchers from the university, led by Dr Caroline Chaya, asked 208 volunteers to take part in blind taste tests of six wines. “In general, men reported higher scores on significant emotions than women for all the wines,” she said. “But women, although they gave generally lower ratings than men, reported greater differences between the wines.”

Image: Shutterstock

SPANISH RESEARCHERS DEVELOP ELECTRONIC TONGUE

Celia Garcia-Hernandez and co-workers - 20 May 2018

The maturity of grapes is usually monitored by means of the sugar concentration. However, the assessment of other parameters such as the phenolic content is also important because the phenolic maturity has an important impact on the organoleptic characteristics of wines. In this work, voltammetric sensors able to detect phenols in red grapes have been developed.  The results demonstrate the exciting possible applications of metal oxide nanoparticles in the field of electronic tongues.

Influence of wine polysaccharides on white and red wine mouthfeel

Gawel, R., Schulkin, A., Smith, P., Kassara, S., Francis, L., Herderich, M., Johnson, D. - 20 Mar 2018

Mouthfeel attributes such as viscosity, astringency and hotness play an important role in wine quality and are known to be influenced by the macromolecules present in wine. Several studies investigated the sensory impact of adding polysaccharides to a range of model and real wines. While some impacts were seen on the perception of viscosity and hotness, the basic wine matrix (pH and alcohol) had a much greater effect on mouthfeel and taste than the polysaccharides.

Manipulating the peppery aroma of wines: The characterization of rotundone

Becca Yeamans-Irwin - 09 Nov 2016

Rotundone, a guaiane-like compound, has the very distinctive aroma of pepper, with a very low sensory threshold (16ng/L in red wine and 8ng/L in water), therefore is a very important compound in wine that warrants further study.  Initial studies have found rotundone concentrations up to 145 ng/L in Australian Syrah, Mourvèdre, and Durif wines, while another recent study found rotundone concentrations as high as 561 ng/L in European red wines Schioppettino and Vespolina, and white wine Gruener Veltliner. 

Working together to improve South African consumers’ wine appreciation skills!

Valeria Panzeri - 05 Apr 2016

The time is right for the wine industry and its research partners to join forces in encouraging the growing South African middle class to appreciate wine. The vast majority of South African consumers have always seemed to prefer a cold beer or a ready-to drink-spirit cooler to a glass of wine. Wine is often perceived as a sophisticated, complex and intricate drink that requires a deep knowledge, which allows you to discuss it in public even before you could actually get to taste it or offer it to your guests.

Sensory and Science for the Pinotage Youth Development Academy

Marianne McKay - 05 Apr 2016

As part of our ongoing, and mutually rewarding relationship, the Department of Oenology and Viticulture (DVO) again hosted 25 Pinotage Youth Development Academy (PYDA) students during 2015 for three more modules in wine science, with a strong emphasis on Sensory Evaluation.

The perfect Pinot problem

The Economist - 03 Feb 2016

Researchers report in the Journal of Agricultural and Food Chemistry that they detected 49 aromatic compounds in Pinot noir grapes from the two years during both the early and the late sampling periods. Most of these compounds remained at low levels throughout the growing period. However, four of them were found in much higher concentrations in the mature grapes than in the early-season ones.

Image: Wikipedia

How Millennials Are Changing Wine

by Lettie Teague in The Wall Street Journal - 06 Nov 2015

They’re the reason you use emojis instead of email and Snapchats instead of real chats. But will millennials also upend the wine establishment? As Lettie Teague discovers, this relationship status is complicated.

Illustration copyright: Janne Iivonen, The Wall Street Journal

The impact of shipping temperatures on white wine

by Wessel du Toit in WineLand Magazine - 16 Sep 2015

This main aim of this work was to investigate the effect of different temperatures to which wine might be exposed to during shipping on the sensory composition of white South African wines.

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