Syrah production. This made Shiraz the most planted variety in Australia and Australia the world's second largest Syrah/Shiraz grower, after France. Victorian regions include Heathcote, roughly 1.5 hours north of Melbourne. Cooler climate regions such as Western Australia's Margaret River produce Shiraz with marginally less alcohol content and often in a more traditional French style. A well-known example of the Shiraz grape in Australian viticulture is the Penfolds "Grange". This wine was created by winemaker Max Schubert in 1951 and has a reputation for aging well. The Penfolds Grange is predominantly Shiraz but often includes a small quantity of Cabernet Sauvignon.
Phenolic content in wine tannins they increase the stability of a wines color-meaning that a wine will be able to maintain its coloring for a longer period of time. The amount of catechins present varies among grape varieties with varietals like Pinot noir having high concentrations while Merlot and especially Syrah have very low levels. As an antioxidant, there are some studies into the health benefits of moderate consumption of wines high in catechins. In red grapes, the main flavonol is on average quercetin, followed by myricetin, kaempferol, laricitrin, isorhamnetin, and syringetin. In white grapes, the main flavonol is quercetin, followed by kaempferol and