Eq.(2) shows thatthe decrease in pH (X1) and the increase in chi-tosan concentration (X2) decrease the total soluble solids response
(Y2), while slow agitation speed (X3) and time (X4)do not influence
this response at p < 0.05. Chatterjee et al. [1] also observed a reduc-tion in soluble solid values of fruit juices treated with chitosan.
Fang et al. [5] justify this occurrence since some soluble compo-nents could have be flocculated and then removed by the fining