Grease antioxidants

Each grease antioxidant phytic acid molecules can provide six pairs of hydrogen ions and electrons to form stable radical structure to replace oil as the oxygen molecule, to avoid oxidation deterioration. At the same time, the use of strong chelating group phytate, high oxidation state complexed metal ion, so that loss of oxidation. Phytic acid as an oil antioxidant has the following advantages: at low concentrations that can achieve the ideal antioxidant effect, does not cause oil odor, and change color; phytic acid as a natural antioxidant, use is very security; its toxicity test with 50% aqueous solution of phytic acid, its median lethal dose LD50 of 4192㎎ / kg, less toxic than table salt; heat stable 0.01% concentration of phytic acid heated by 100-110 ℃ 1h, only 2.8% phytic acid is hydrolyzed; phytic acid than synthetic antioxidants BHA, PG cheaper.