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.
Our bodies form lactic acid naturally. It forms as the body converts carbohydrates into energy during periods of low oxygen levels, which can occur with intense physical exercise. In foods, lactic acid either occurs naturally, or a synthesized form is added as a flavoring or preservative agent.