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Results for “H2S”
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The significance of the H2S-C6 pathway for volatile thiol production
In this study, the significance of the H2S-C6 pathway was tested by monitoring the initial stages of fermentation using a synthetic grape medium with known composition and various laboratory and commercial yeast strains.
By Carien Coetzee · 7 min read
To swirl or not to swirl? - that is the question... (Part 1)
This study looked at both chemistry and sensory perception in model wine with different varietal thiol and H2S levels. Using a model wine, they were able to manipulate the varietal thiol and free H2S at low and high levels and assessed sensory changes after different glass swirling regimes.
By Matija Lesković, Jeanne Brand and Wessel du Toit · 8 min read
To swirl or not to swirl? - that is the question... (Part 2)
This study investigated the sensory suppression effects of H2S on tropical fruit characters and evaluated whether the perceived improvement following swirling is a result of chemical oxidation or physical volatilisation.
By Matija Lesković, Jeanne Brand and Wessel du Toit · 9 min read
How volatile fatty acids and sulphurous compounds impact on key aromas
This is the final article in a series of three which covers the fungal and bacterial origins of wine aromas. These articles detail esters, aldehydes, volatile f
By Russell Moss · 9 min read
Is adding copper the solution? (Part 1)
In a Winetech-funded project, researchers aimed to answer the question: How does copper addition influence the reductive compounds and varietal thiols in a wine after bottling?
By Matija Lesković, Jeanne Brand and Wessel du Toit · 8 min read
Specific bioprotection against Brettanomyces
LEVEL2 SALVA™ is a new non-Saccharomyces yeast of the species Suhomyces pyralidae used as a specific bioprotection against Brettanomyces bruxellensis during the pre-fermentative steps of wine production.
By Lallemand · 15 min read
Fermentis launches SpringFix™ Mousy and SafŒno™ Bioprotect MP-72
SpringFix™ Mousy is used to remediate mousy off-flavors and restore sound wine hygiene. SafŒno™ Bioprotect MP-72 is designed for the bioprotection of grapes and musts.
By SA Wine Industry · 2 min read
