Fig. 2

Response surface showing the effects of independent variables on XOS yields. a Reaction temperature (°C) and time (min); b XA concentration (mol/L) and reaction temperature (°C); c XA concentration (mol/L) and reaction time (min)
Response surface showing the effects of independent variables on XOS yields. a Reaction temperature (°C) and time (min); b XA concentration (mol/L) and reaction temperature (°C); c XA concentration (mol/L) and reaction time (min)