Vlog #3: Matija Lesković – Is copper the solution to fixing reductive wines?
Is copper the solution to fixing reductive wines? Post-bottling results from a recent study shed some light on the exact effects Matija Lesković is an oenologist and third-year oenology PhD student at Stellenbosch University, mentored by Professor Wessel du Toit. His...
Removing copper-H2S complexes using membrane filtration
Dr. Carien Coetzee Basic Wine 30 June 2020 FOCUS ON H2S: Part 6 The entire Focus on H2S series has highlighted the importance of removing the copper-H2S complex from wine, especially in cases where copper was added as a remedial treatment for the removal of reductive...
Removing copper-H2S complexes using PVI/PVP
Dr. Carien CoetzeeBasic Wine28 June 2020 FOCUS ON H2S: PART 5 In Part 1 of this Focus on H2S series, the implications of fining a reductive wine with copper(II)sulphate were discussed. Cu2+ will bind with H2S to form a copper-H2S complex, however, contrary to popular...
