title: [The effect of terephthalic acid and film made from polyterephthalic acid esters on water soluble vitamins].
abstract: Terephthalic acid is used for the production of polyterephthalic acid esters for foils that are applied for cooking, roasting, and baking; it is able to migrate as a monomer into foodstuffs. The effect of sodium terephthalate on vitamins such as thiamin, riboflavin, pyridoxine, and ascorbic acid at different conditions (variation of time and temperature); effects of a foil made of polyterephthalic acid esters was also tested. Thiamin and riboflavin are stabilized by sodium terephthalate while pyridoxine is decomposed faster, especially at higher temperatures. The tests of thiamin and riboflavin in the foils show similar results, whereas the losses of pyridoxine were not so high compared with the tests where sodium terephthalate had been added. Ascorbic acid is protected, too, by sodium terephthalate, except with long heating periods at a temperature of 220 degrees C.
authors.affiliation: Institut für Lebensmittelchemie und -technologie, Technische Universität Wien, Osterreich.
authors.forename: I
authors.initials: I
authors.lastname: Steiner
mesh_terms: D001205:Ascorbic Acid / Q000737:chemistry*; D006358:Hot Temperature; D010795:Phthalic Acids / Q000737:chemistry*; D011091:Polyesters; D011736:Pyridoxine / Q000737:chemistry*; D012256:Riboflavin / Q000737:chemistry*; D013831:Thiamine / Q000737:chemistry*
chemical_list: D010795:Phthalic Acids; D011091:Polyesters; C011363:terephthalic acid; D011736:Pyridoxine; D001205:Ascorbic Acid; D012256:Riboflavin; D013831:Thiamine
vernacular_title: Uber die Wirkung von Terephthalsäure und Folien aus Polyterephthalsäureestern auf wasserlösliche Vitamine.