Abstract

KONTOGEORGOS, N.  and  ROUSSIS, I.G.. Total free sulphydryls of several white and red wines. S. Afr. J. Enol. Vitic. [online]. 2014, vol.35, n.1, pp.125-127. ISSN 2224-7904.

Total free sulphydryl groups were assessed in several white and red wines. Ellman's method was adapted to wine samples for the determination of total -SH groups. Total -SH groups of white wines, as glutathione, were in the range of 315 to 734 and of red wines in the range of 163 to 467 mg/L. In most cases, white wines exhibited higher values than red wines. The high total sulphydryls of white and red wines indicate their potential contribution to wine antioxidant capacity.

Keywords : Wine; total free sulphydryls.

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