For this reason, the aim of this work was to carry out a preliminary
investigation on the radical scavenging activity (measured by
DPPH assay) and the oxygen consumption capacity of different
enological products and additives in comparison with SO2. Ascorbic
acid (considered as reference standard), glutathione, yeast lees
and a self-prepared yeast autolysate were tested. Trials were
performed in model solution and in different wine typologies.
Concerning oxygen consumption trials, wines were finally subjected
to fast spectrophotometric measurements, for assessing
the effect of the different antioxidants on colour, total phenolics
and predisposition to browning.