Syrah 1830s. So while the name or spelling "Shiraz" may be an effect of the English language on a French name, there is no evidence that it actually originated in Australia, although it was definitely the Australian usage and the Australian wines that made the use of this name popular. Another legend of the grape variety's origin, based on the name Syrah, is that it was brought from Syracuse by the legions of Roman Emperor Probus sometime after AD 280. This legend also lacks documentary evidence and is inconsistent with ampelographic findings. The wines that made Syrah famous were those from
Phenolic content in wine concentration in the skins of wine grapes. The accumulation in ripe berries of different concentrations of both bound and free resveratrols depends on the maturity level and is highly variable according to the genotype. Both red and white wine grape varieties contain resveratrol, but more frequent skin contact and maceration leads to red wines normally having ten times more resveratrol than white wines. Resveratrol produced by grape vines provides defense against microbes, and production can be further artificially stimulated by ultraviolet radiation. Grapevines in cool, damp regions with higher risk of grape diseases, such as Bordeaux and Burgundy, tend to