The use of chitosan acid salts was assessed in
the clarification orange nectar. Clarification process was performed at
laboratory scale by the classical methodology of jar test by adding chitosan
acetate or chitosan lactate at concentrations between 0 g/L and 2 g/L of
nectar.
Numerical optimization method was used through
an IV Optimal response surface for the best variant of coagulation-flocculation
based on clarification yield. No significant effect of the salt type and
concentration or clarification time on the physicochemical parameters of
nectars were observed. Both chitosan
acid salts could be used as clarifying agents, although chitosan lactate at
1 g/L was more effective, obtaining the highest yield (66.14%) to a time of 90
min.
In general, there was no significant influence
of the type and concentration of chitosan acid salt on the sensory attributes
of the products and nectar clarified with chitosan lactate showed the higher
overall quality.
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