. Grape contains predominantly tartaric acid along with malate, citrate,
succinate, fumarate, and several organic acid intermediates of metabolism. The content of
organic acids in berries can affect their suitability for processing. High acid content coupled
with low sugar content can result in poor quality wines. External warm growth conditions
enhance the metabolism of malic acid in grapes during ripening and could result in a high
tartarate/malate ratio, which is considered ideal for vinification