Publications library

Blogs and articles

Scientific and popular blog posts and articles published on various online and printed platforms

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May 4, 2022

STEADY SAUVIGNON IDEAL FOR CANNING

by Dr. Carien Coetzee

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Concours Mondial du Sauvignon

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April 1, 2022

Factors affecting sparging efficiency (Part 1)

by Dr. Carien Coetzee

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Winetech Technical

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February 27, 2022

Washing grapes

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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December 1, 2021

Bioprotection – a microbial alternative to SO2

written by Dr. Carien Coetzee for Laffort SA

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Winetech Technical

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October 1, 2021

Adding antioxidants to Sauvignon blanc musts (Part 2)

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Winetech Technical

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July 31, 2021

SHAKEN AND STIRRED – DOES PHYSICAL AGITATION DURING TRANSPORT AFFECT WINE?

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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June 30, 2021

FAULT FOCUS – GEOSMIN DRAGGING YOUR WINE THROUGH THE MUD

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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May 28, 2021

Copper-containing fungicide and the effect on the 3-mercaptohexanol concentration

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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February 3, 2021

Strategies for producing Sauvignon blanc with reduced alcohol content – Part 3

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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January 1, 2021

Do smaller thiol increases have a significant sensorial effect?

BY CARIEN COETZEE, MATIJA LESKOVIC, JEANNE BRAND & WESSEL DU TOIT

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Wineland Technical

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December 1, 2020

New developments in protein stability

by Dr. Carien Coetzee

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Wineland Technical

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October 27, 2020

Sauvignon Blanc and plant water status

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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September 29, 2020

ESTERS 101 – PART 1

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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August 1, 2020

Yeast and its ability to release thiols

by Dr. Carien Coetzee

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Wineland Technical

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June 30, 2020

Removing copper-H2S complexes using membrane filtration

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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May 20, 2020

COPPER AND SO2 USED TOGETHER – EFFECT ON H2S

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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April 23, 2020

RETHINKING COPPER FOR THE TREATMENT OF H2S

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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March 18, 2020

OXYGEN CONSUMPTION BY YEAST LEES

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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February 12, 2020

HAND HARVEST VS MECHANICAL HARVESTING? THE EFFECT ON VOLATILE THIOLS

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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January 19, 2020

ROTUNDONE PART 1: THE AROMATIC COMPOUND RESPONSIBLE FOR PEPPERY NOTES IN SHIRAZ

by Dr. Carien Coetzee

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Shiraz SA

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December 22, 2019

HOW SHIPPING TEMPERATURES AFFECT SAUVIGNON BLANC WINE COMPOSITION – PART 2

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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December 4, 2019

GRAHAM BECK’s 2014 CUVÉE CLIVE – A SHOWCASE OF POWER AND ELEGANCE

by Dr. Carien Coetzee

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wine.co.za

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October 31, 2019

MANAGING GREEN AROMAS IN THE VINEYARD: METHOXYPYRAZINES

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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September 30, 2019

CONSUMPTION RATES: OXYGEN AND SULPHUR DIOXIDE

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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August 28, 2019

POTASSIUM POLYASPARTATE (KPA). ENSURING TARTRATE STABILITY IN SAUVIGNON BLANC...SINCE 2019

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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July 16, 2019

MINERALITY IN SAUVIGNON BLANC – PART 4

Salinity – the cousin of Minerality

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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June 19, 2019

MINERALITY IN SAUVIGNON BLANC – PART 3 

Soil minerals in wine…

unromantically disproven

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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May 17, 2019

MINERALITY IN SAUVIGNON BLANC – PART 2

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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April 1, 2019

LOW ALCOHOL SAUVIGNON BLANC THE BREADWINNER OF TOMORROW

by Dr. Carien Coetzee

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February 27, 2019

STABILITY OF SAUVIGNON BLANC AROMA AFTER FERMENTATION

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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September 2018

CHENIN BLANC VS SAUVIGNON BLANC – THIOL LEVELS IN YOUNG WINES

Co-authored by Dr. Carien Coetzee

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Wineland media

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April 2018

Adjusting Sauvignon Blanc aroma and flavor complexity:
GRAPE DERIVED FRUITY

VOLATILE THIOLS

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Wines and Vines Analytics

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November, 2017

EVERYONE'S BUZZING ABOUT 4MMP

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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April, 2017

Delle Units: Alcohol-sugar combination to achieve microbial stabilization in sweet wines

by Dr. Carien Coetzee

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Vinlab

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February, 2017

Méthode Cap Classique, Part 4: Aging, riddling, disgorging and corking

by Dr. Carien Coetzee

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Vinlab

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January, 2017

Méthode Cap Classique, Part 1: Viticulture

by Dr. Carien Coetzee

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Vinlab

White Wine

September, 2014

Factors influencing the consumption of oxygen in wine

co-authored by Dr. Carien Coetzee

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Wineland Media

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May 1, 2022

Factors affecting sparging efficiency (Part 2)

by Dr. Carien Coetzee

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Winetech Technical

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March 10, 2022

STEERING AWAY FROM FLAT AND FLABBY MERLOT

by Dr. Carien Coetzee

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Winetech

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January 1, 2022

Cooling Sauvignon blanc grapes before processing – is it worth the effort, time and energy?

by Dr. Carien Coetzee

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Winetech Technical

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October 31, 2021

The beauty of “blackcurrant” aroma

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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September 30, 2021

ELEMENTAL SULPHUR SPRAY – PART 2:
RESIDUES DURING WINEMAKING

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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August 30, 2021

LIGHT-STRIKE
PART 2

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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July 30, 2021

FAULT FOCUS – “CORKED” WINE UNDER SCREWCAP?

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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January 30, 2021

Strategies for producing Sauvignon blanc with reduced alcohol content – Part 2

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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December 18, 2020

PVPP under the spotlight

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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November 24, 2020

LADYBUG TAINT: PART 2

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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October 17, 2020

Grapevine Leafroll Disease and the effect on Sauvignon Blanc

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

HOW-DISSOLVED-CARBON-DIOXIDE-PROTECTS-WI

August 19, 2020

How dissolved carbon dioxide protects wine from oxygen

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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July 30, 2020

The influence of bottle colour and light on Sauvignon Blanc

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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June 28, 2020

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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May 20, 2020

THE EFFECT OF pH ON H2S FORMATION

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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April 8, 2020

OPTIONS FOR ENHANCING MOUTHFEEL OF EARLIER HARVEST GRAPES – A RESEARCH SUMMARY

by Dr. Carien Coetzee

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Shiraz SA

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February 12, 2020

ROTUNDONE PART 2: WINERY PROCESSES AFFECTING PEPPER AROMA

by Dr. Carien Coetzee

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Shiraz SA

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February 4, 2020

WHEN IS THE BEST TIME TO APPLY BENTONITE?

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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January 1, 2020

Exploring PET and BIB as possible alternative packaging for Sauvignon Blanc

by Dr. Carien Coetzee

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Winetech Technical

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December 2, 2019

MANAGING GREEN AROMAS IN THE CELLAR: METHOXYPYRAZINES

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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November 20, 2019

VITICULTURAL AND OENOLOGICAL INFLUENCES ON VOLATILE THIOLS

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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October 17, 2019

FOLIAR FERTILISATION: EFFECT ON VOLATILE THIOLS

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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September 12, 2019

A TECHNICAL UNRAVELLING OF THE YOUNG WINE SHOW CHAMPION!

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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August 16, 2019

CLOSURE-DERIVED OXYGEN AND OTR 

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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July 8, 2019

POST-HARVEST SUN EXPOSURE CAN POTENTIALLY LEAD TO A DECREASE IN VOLATILE THIOLS

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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June 3, 2019

Corked wine under screwcap?

by Dr. Carien Coetzee

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wine.co.za

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April 23, 2019

SHOULD WE BE AFRAID OF PINKING?

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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March 25, 2019

EFFECT OF BENTONITE FINING ON VOLATILE THIOLS

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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February 22, 2019

SAUVIGNON BLANC UNDER INVESTIGATION: CURRENT RESEARCH AT THE UNIVERSITY OF STELLENBOSCH (OENOLOGY)

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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August 20, 2018

"GROEN" WYNE SOMS BAIE GESOG

by Dr. Carien Coetzee (Afrikaans)

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Eikestadnuus

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March, 2018

Sugars in grapes and wines demystified

by Dr. Carien Coetzee

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Vinlab

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November, 2017

GUAVA TREE AND CAT"S PEE

by Dr. Carien Coetzee

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Winetech

Science

March, 2017

The ins and outs of a copper fining trial

by Dr. Carien Coetzee

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Vinlab

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January, 2017

Méthode Cap Classique, Part 3: From the end of primary fermentation to preparation and commence of secondary fermentation

by Dr. Carien Coetzee

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Vinlab

White Wine

September 2015

How quickly does oxygen disappear from white wine?

co-authored by Dr. Carien Coetzee

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Wineland Media

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March 30, 2022

Glycerol – does it really contribute to mouthfeel?

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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February 28, 2022

Juice solids and clarification 101

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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December 9, 2021

Nutriferm X – Frequently Asked Questions

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

CO2 sparging of Sauvignon Blanc JUICE_ed

October 30, 2021

CO2 sparging of Sauvignon Blanc JUICE

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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September 29, 2021

ELEMENTAL SULPHUR SPRAY – PART 1:
RESIDUE CONCENTRATIONS AT HARVEST

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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August 29, 2021

LIGHT-STRIKE
PART 1

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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June 30, 2021

KPA TO THE RESCUE – THE SOLUTION TO TARTRATE STABILISATION

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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January 29, 2021

Strategies for producing Sauvignon blanc with reduced alcohol content – Part 1

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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December 10, 2020

Testing different fermentation vessels for the production of Sauvignon Blanc wines

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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November 23, 2020

LADYBUG TAINT: PART 1

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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September 29, 2020

ESTERS 101 – PART 2

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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August 11, 2020

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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July 8, 2020

Late Spring mechanical shaking

ditch the Botrytis, keep the yield

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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May 20, 2020

WINTER FERMENTED SAUVIGNON BLANC – INNOVATION GIVING SOUTH AFRICAN WINERIES AN EDGE

by Dr. Carien Coetzee

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Concours Mondial du Sauvignon

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April 23, 2020

LATENT H2S FORMATION – HOW IS IT POSSIBLE?

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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March 23, 2020

HOW SO2 SPEEDS UP OXYGEN REMOVAL – A RESEARCH SUMMARY

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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February 18, 2020

FREE-RUN vs PRESSING? THE EFFECT ON THE VOLATILE THIOLS

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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January 21, 2020

EFFECT OF MECHANICAL HARVESTING ON SAUVIGNON BLANC PROTEIN CONTENT

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

shipping-sauvignon-blanc-400x250_edited.

December 21, 2019

HOW SHIPPING TEMPERATURES AFFECT SAUVIGNON BLANC COMPOSITION – PART 1

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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December 1, 2019

RANDOM OXIDATION AND THE ROLE OF BOTTLE DIMENSIONS

by Dr. Carien Coetzee

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Wineland Technical

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November 18, 2019

HPP TECHNOLOGY TO REDUCE SO2 REQUIREMENTS – THE EFFECT ON SAUVIGNON BLANC COMPOSITION

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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9 October, 2019

by Dr. Carien Coetzee

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wine.co.za

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July 24, 2019

THE EVOLUTION OF SAUVIGNON BLANC’S FRIEND (3MH) AND FOE (H2S) DURING BOTTLE STORAGE

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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June 20, 2019

STYLISTIC DIVERSITY IN SOUTH AFRICAN SAUVIGNON BLANC

by Dr. Carien Coetzee

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Concours Mondial du Sauvignon

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May 30, 2019

VOLATILE THIOLS: CONJUGATED PRECURSORS ARE NOT THE MAIN SOURCE. DID YOU KNOW THAT?

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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April 5, 2019

MINERALITY IN SAUVIGNON BLANC – PART 1

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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March 11, 2019

SA A FAVOURITE AT CONCOURS MONDIAL DU SAUVIGNON

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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February 18, 2019

INCREASING METHOXYPYRAZINES USING SKIN CONTACT AND INCREASED PRESSURES…

MORE TROUBLE THAN IT IS WORTH?

by Dr. Carien Coetzee

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Sauvignon Blanc South Africa

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May 2018

 

Adjusting Sauvignon Blanc aroma and flavor complexity:

PRESERVING AND INCREASING THIOLS

by Dr. Carien Coetzee

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Wines and Vines Analytics

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March, 2018

Glucose & Fructose for the prediction of final alcohol

by Dr. Carien Coetzee

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Vinlab

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November, 2017

Geosmin…soiling my wine

by Dr. Carien Coetzee

vinlab logo.jpg

Vinlab

Red Wine

February, 2017

Comparing the Glories, Iland and Bovine serum albumin when measuring phenolic compounds and whether there is a correlation between grape and wine content?

co-authored by Dr. Carien Coetzee

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Wineland Media

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January, 2017

Méthode Cap Classique, Part 2: Processing and primary fermentation

by Dr. Carien Coetzee

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Vinlab

Grapes

October, 2013

Colour and phenolics in red grapes – a comprehensive survey of the distribution of these parameters in different red grape blocks from the Robertson area

co-authored by Dr. Carien Coetzee

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Wineland Media