An HPLC method on C18 column using a gradient mobile phase is proposed for the separate determination of residual benzoyl peroxide(BP) and benzoic acid (BA) in flour and wheat products.of 10 samples of commercial foods such as flour and wheat products, detected
0.7g/g of BP in imported noodles. Furthermore, we successfully verified the existence of BP by LC–MS. These methods are simple and
reliable for determination and verifying the amount of BP and BA in foods since now the use of BP as a foodadditive is permitted in many