Terroir 2004 banner
IVES 9 IVES Conference Series 9 TCA – A status report on South African cork closures

TCA – A status report on South African cork closures

Abstract

Cork taint decreases the commercial value of wine as tainted wines are rejected by consumers. Although other compounds in wine and cork can also be responsible for causing a taint, 2,4,6-trichloroanisole (TCA) is regarded as the primary cause of cork taint. As cork taint is often used in marketing campaigns against natural cork closures, manufacturers extended their overall quality control to monitoring TCA levels. Since August 2004 a representative sample of all batches of cork closures that are imported by members of the South African Cork Quality Council (SACQC) are tested for TCA before release into the market. Quality control on TCA is conducted by an independent laboratory, established by the Institute for Wine Biotechnology (Department of Viticulture and Oenology, University of Stellenbosch) and Thalès Wine Cellar Services (Pty) Ltd. In this contribution we report on the current status of TCA in cork closures in South Africa. The analytical methodologies as well as the quality control program that is currently implemented are also outlined.

Download the PDF

DOI:

Publication date: January 12, 2022

Issue: Terroir 2004

Type: Article

Authors

J.A. Minnaar

Institute for Wine Biotechnology, University of Stellenbosch, Private Bag X1, Stellenbosch, 7600, South Africa

Contact the author

Tags

IVES Conference Series | Terroir 2004

Citation

Related articles…

Short-term canopy strategies to enhance grapevine adaptation to climate change

Context and purpose of the study – Viticulture faces significant challenges due to climate change, with increased frequency of extreme weather events impacting grapevine growth, grape quality, and wine production.

Read More

Influenze pedo-ambientali su produzione, qualità e caratteristiche sensoriali dell’Albana di Romagna

L’Albana è il vitigno a bacca bianca tradizionale delle colline della Romagna, dove é presente per più di 2.500 ha. Con le sue uve si produce il vino “Albana di Romagna”, una delle più storiche D.O.C.G. italiane essendo stata costituita nel 1987. La maggiore concentrazione di vigneti di Albana si trova nell’Imolese e nelle colline del Ravennate, ma ben conosciuta per la qualità del prodotto é anche la produzione di Bertinoro, nel Forlivese.

Read More

Botrytis cinerea: Coconut or Catastrophe? Quantification of γ-Nonalactone in Botrytised and Non-Botrytised New Zealand Wines

g-Nonalactone has been identified as a significant contributor to the aroma profile of a range of wines and is associated with stonefruit and coconut descriptors.

Read More

Development of the geographic indication vale do São Francisco for tropical wines in Brazil

Aim: Geographical Indications-GI are commonly used to protect territorial products around the world, such as cheese and wine. This qualification is useful because it improves the producer’s organization, protects and valorizes the distinct origin and quality of the product, increases recognition and notoriety, and adds value for products. Tropical wines are mainly produced in Brazil, India,

Read More

Applicability of spectrofluorometry and voltammetry in combination with machine learning approaches for authentication of DOCa Rioja Tempranillo wines

The main objective of the work was to develop a simple, robust and selective analytical tool that allows predicting the authenticity of Tempranillo wines from DOCa Rioja. The techniques of voltammetry and absorbance-transmission and fluorescence excitation emission matrix (A-TEEM) spectroscopy have been applied in combination with machine learning (ML) algorithms to classify red wines from DOCa Rioja according to region (Alavesa, Alta or Oriental) and category (young, crianza or reserva).

Read More