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 producing bacteria are most significant bacteria used in food fermentation and production. Sour milk is one of the most ancient lactic acid fermented food in which the lactic acid bacteria will convert the milk sugar known as lactose to lactic acid resulting in sour or fermented milk.Dairy products for example yogurt, cheese, butter and sour milk are also produced.y using different microbial strains, optimum fermentation conditions and different advanced techniques many. fermented products have been manufactured such as dairy (cheese, butter) vegetables (pickles, olives, and sauerkraut), meat, beverages, bread, vinegar and other organic acids.