How about the Citric Acid E330 or 330? No problem with naturally occurring citric acid. Artificially produced E330 or 330 additive, depending on where or how it is produced with using sulfuric acid, many believe the product might still contain mold and sulfur/sulfites not filtered out completely during the production (Sulfur dioxide and other sulfites (also referred to as sulphites, [do not confuse with sulfate]) are among food additives in the list below, under H – A, causing asthmatic and allergic reactions.) For most people sulfites are safe, but for example sensitive aspirin allergies or asthma sufferers can react very severely to sulfites.In the year 1953 Sir Hans Krebs received Nobel Prize for physiology medicine for discovering that the Citric acid in metabolic reactions acts as part in series of compounds occurring within physiological oxidation of proteins, carbohydrates and fats and turning them into water and Carbon dioxide. Called Tricarboxylic Acid Cycle or known as the Krebs Cycle which is involved in most metabolic reactions, where the Citric acid plays a major role. * The world “krebs” translates to English word “cancer” … and that’s what created the misunderstanding that citric acid 330 – e330 causes cancer. But in fact it does not. It is an organic acid used as additive in foods, in drinks, in beer, wine or cheese production, citric acid prevents bacteria growth, it gives the citric/sour flavor, bakers use it, citric acid E330 or 330 is often added to cakes, biscuits, soups, all sorts of sauces, frozen packed and canned food products, sweets, marmalade’s, ice creams, which is positive and tasty … you can find it mentioned on the packaging.