Acids in wine responsible for the sour taste of vinegar. During fermentation, activity by yeast cells naturally produces a small amount of acetic acid. If the wine is exposed to oxygen, "Acetobacter" bacteria will convert the ethanol into acetic acid. This process is known as the “acetification” of wine and is the primary process behind wine degradation into vinegar. An excessive amount of acetic acid is also considered a wine fault. A taster's sensitivity to acetic acid will vary, but most people can detect excessive amounts at around 600 mg/l. Ascorbic acid, also known as vitamin C, is found in young wine grapes
Tamil language distinction between inclusive pronouns ' (we), ' (our) that include the addressee and exclusive pronouns ' (we), ' (our) that do not. Tamil is a consistently head-final language. The verb comes at the end of the clause, with a typical word order of subject–object–verb (SOV). However, word order in Tamil is also flexible, so that surface permutations of the SOV order are possible with different pragmatic effects. Tamil has postpositions rather than prepositions. Demonstratives and modifiers precede the noun within the noun phrase. Subordinate clauses precede the verb of the matrix clause. Tamil is a null-subject language. Not all Tamil