The cloud stability in the litchi juice improved with the
incorporation of different concentrations of CMC.
However, no significant difference in cloud retention was
observed when CMC at a concentration of 0.3% or above
was added to the juice (Fig. 1c). Similar observations were
made by Mirhosseini et al. (2008) during their study with
orange beverage wherein they found least difference in
cloud stability when the concentration of CMC increased
beyond 0.3%. Genovese and Lozano (2001) reported that
the stabilizing effect of CMC is due to its electronegativity
than viscosity-producing effect. Beristain et al. (2006)
explained that CMC stabilizes the juice by electrostatic
repulsion with juice haze. This reaction leads to the formation
of hydrate shell which adjusts the density of the cloud
particle to the density of the serum. This reaction stops as
soon as the proteins are saturated with hydrocolloid, and
thus the cloud stability does not improve even with addition
of CMC at higher concentrations. This possibly explains the
rationale behind an insignificant effect on cloud stability
with the increase in CMC concentration beyond 0.3% in the
present study. Therefore, addition of CMC at 0.3% was
optimized for evaluation of physicochemical parameters
during the storage studies.