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.
Lactic Acid Fermentation. -The breaking down of glucose without using oxygen, producing lactic acid and a small amount of energy. -When lactic acid builds up in your muscles, you feel pain, your muscles feel weak and sore.