Rice Krispies Crackle and Pop touting the brand. In 1963, The Rolling Stones recorded a short song for a Rice Krispies television advertisement. Rice Krispies contain rice, sugar, salt, malt flavoring, iron, ascorbic acid (vitamin C), alpha tocopherol acetate (vitamin E), niacinamide, vitamin A palmitate, pyridoxine hydrochloride (vitamin B6), riboflavin (vitamin B2), thiamin hydrochloride (vitamin B1), folic acid, vitamin B12, and vitamin D. According to Kellogg's, the rice used in the US version of the cereal is grown in the states of Louisiana and Arkansas. Kellogg Company was found by the Federal Trade Commission to be making unsubstantiated and misleading health claims
Folinic acid to be metabolized in the liver before it could support growth of "L. citrovorum." The synthesis of citrovorum factor by liver cells in culture was eventually accomplished from pteroylglutamic acid in the presence of suitable concentrations of ascorbic acid. The simultaneous addition of sodium formate to such systems resulted in increased citrovorum factor activity in the cell-free supernatants (producing, as now known, the 5-formyl derivative), and from this method of preparation of large amounts of the factor, its structure as levo-folinic acid (5-formyl tetrahydrofolic acid) was eventually deduced. Folinic acid should be distinguished from folic acid (vitamin B). However, folinic