Application of response surface methodology for optimization of preservable fruit with low sulfur

In order to decrease the residue content of sulfite of preservable fruit,the color preservation technology of apple were investigated by response surface methodology and verified in plum billet. The effect of V_C、L- Cys、Na₂S₂O₅、CA、DSC、EDTA-2Na were researched.The best compound fixative was determined as follows: Na₂S₂O₅5.00 g / L,V_C2.55 g / L and L- Cys 0.40 g / L. The effect of this compound fixative was equal than sulfur- containing( Na₂S₂O₅20.00 g / L). This study provided the theoretical basis and technical support for further development of low sulfur preservable fruit.