Acidulous GRE Vocabulary Flashcard

Acidulous GRE Vocabulary Flashcard /əˈsɪdjʊləs/ (adj) Definition sour or cutting in manner, taste or tone, acerbic, piquant, cutting, biting, tart, pungent, sharp-tasting, acrimonious, acidic Example Bacteria tend to get a lot of bad press. But lactic acid bacteria occur naturally on plants like grasses and can easily end up in milk. They ferment lactose at room temperature and turn it into lactic acid, and that's why milk goes acidulous. More acid means more hydrogen ions, a lower pH and a sour taste. Lower pH change the structure of proteins like casein, which gives milk its whiteness, so it curdles into ...