Abstract:

The efficiency of H2O2 for degrading residual dimethoate and pirimicarb in soybean protein isolate was
investigated. The effect of H2O2 dose, treatment time and pH on the degradation rates of both pesticides was explored using
quadratic multivariate D-saturation design. The results indicated that after 22.50 min of exposure to 2.50 mL/L of H2O2 at pH
6.5, the residues of dimethoate and pirimicarb in soybean protein isolate were degraded by an average of 79.7%, meeting the
national safety requirement and reaching a level close to 0.01 mg/kg in the Japanese Positive List System.

Key words: H2O2, soybean protein isolate, pirimicarb, dimethoate