Antioxidans
BHT
Butylated hydroxytoluene, a derivative of phenol and toluol, can be found in Green Algaes and Cyanobacteria. In industry where large amounts are needed the synthesis of BHT is done on an industrial scale. The compound serves most primarily as an antioxidant used for the production of colours, bio diesel, waxes, cosmetics, pharmaceuticals or packaging materials. In the EU it is authorized as a food additive (E 321).
Detection method: linked HPLC/MS
BHA
Butylated hydroxyanisole is a mixture of two phenolic ether compounds and does not occur in nature. BHA is synthesized on a large scale and is used in cosmetics like peelings, bleaching creams and exfoliating cleansers. In the EU it is authorized as a food additive (E 320) und used as a preservative.
Detection method: linked HPLC/MS