In this work, the feasibility of two commercial products enriched in hydroxytyrosol (HT) as alternative to
sulfur dioxide in Syrah red wines was evaluated. The HT enriched products came from synthesis and from
olive waste. Wines treated with HT were compared with wines treated with sulfur dioxide at two wine-
making stages: bottling and after 6 months of storage in bottle. Minor differences were found in enolog-
Article history:
Received 10 March 2015
Received in revised form 18 June 2015
Accepted 23 June 2015
Available online 27 June 2015