A Rapid Method for the Determination of Methyl p-Hydroxybenzoate in Soy Sauce and Vinegar
Objective:To establish a rapid,efficient,economical and environment-friendly sample pretreatment method of determining the methyl p-hydroxybenzoate in soy sauce and vinegar.Method:The samples were extracted by 10 mL ethyl acetate,purified by 5 mL saturated NaHCO3 solution saturated with NaCl,detected by gas chromatography(FID),and quantified by external standard method.Result:The detection limit is 0.6 mg·kg-1,most of the recovery rates of four different concentrations are between 70%and 120%,and the relative standard deviations are between 0.90%and 7.06%.Conclusion:The detection limit,accuracy and precision all meet the requirements of determining the hydroxybenzoates in soy sauce and vinegar.
NETL
NSTL
万方数据
