Video clip from Enoforum Web Conference - Presentations by Ana Hranilovic and Antonio Castro Marin
Two research presentations, one from Australia and one from Italy, propose interesting and sustainable oenological solutions to combat the lack of acidity in wines and microbial threats.
Investigations of the effects of ultrasound on thiol precursors of grapes
Tomas Roman, Fondazione Edmund Mach
High amplitude and power ultrasounds (US) were tested on the pre-fermention maceration phase of white grapes to study the effect on thiol precursors. In particular, the research focused on the precursors of 3-mercaptohexan-1-ol (3MH) and 4-mercapto-4-methyl-pentan-2-one (4MMP) linked to glutathione (GSH) and cysteine (Cys).
All the experiences highlight the interesting effect of US treatment on thiol precursors; from a technological point of view, US could be advantageously used in the management of the pre-fermentation maceration phase of aromatic varieties containing thiol precursors. The results of this and previous research make it reasonable that pre-fermentation maceration of white grapes could be replaced by a short treatment of the crushed grapes.
Report presented at the Enoforum Awards 2020. The paper reproduced in this video-seminar was presented at the 1st Spanish edition of Enforum Web (5-7 May 2020)
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Published on 10/22/2020
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VIDEO SEMINARIO - ENGLISH (Tomás ROMAN VILLEGAS; streaming 12 min)
