Transactions have traditionally been handled manually, between brokers or counterparties. However, starting in the 1970s, a greater portion of transactions have migrated to electronic trading platforms. These may include electronic communication networks, alternative trading systems,  dark pools  and others.
Lactic acid in Food. Lactic acid is naturally present in many foodstuffs. It is formed by natural fermentation in products such as cheese, yogurt, soy sauce, sourdough, meat products and pickled vegetables.
During lactic acid fermentation, pyruvate is reduced directly to NADH to form lactate as an end product with no release of CO2. Lactate is an ionized form of lactic acid. Lactic acid fermentation by certain fungi and bacteria is used in the dairy industry to make cheese and yogurt.