The effect of concentration of tapioca maltodextrin with three different DE values on the
viscosity, depletion attraction potential (Wdep), rate of coalescence (Kc), and creaming rate of
oil-in-water emulsion have been investigated. The relative viscosity and Wdep increased with
increasing maltodextrin concentration. Critical flocculation concentration (CFC) of emulsions
containing maltodextrin with DE of 16 (DE16), 12 (DE12), and 9 (DE9) were 11, 7, and 5.5 wt%,
respectively. At maltodextrin concentrations below CFC, there was no change in Kc and no
creaming was observed. At maltodextrin concentrations above CFC, an increase in the concentration
of DE9 and DE12 resulted in an increase in Kc until it reached a constant value. Kc
values remained to be constant in the concentration range between 30 and 40 wt% for DE9
and that between 35 and 45 wt% for DE12. Further increasing in concentration of DE9 and 12
decreased Kc. Kc of DE16 monotonically increased with increasing concentration from CFC to
50 wt%. The rate of creaming decreased with increasing maltodextrin concentration over
CFC until it reached zero. Creaming was not observed at maltodextrin concentrations more
than 35 wt% for DE9 and 40 wt% for DE12 whereas DE16 showed creaming at all concentrations
above CFC. A maltodextrin with a lower DE inhibited creaming more efficiently than
maltodextrin with a higher DE because of higher viscosities. The Kc tended to increase with
decreasing DE because the strength of interaction between oil droplets increased.
The effect of concentration of tapioca maltodextrin with three different DE values on theviscosity, depletion attraction potential (Wdep), rate of coalescence (Kc), and creaming rate ofoil-in-water emulsion have been investigated. The relative viscosity and Wdep increased withincreasing maltodextrin concentration. Critical flocculation concentration (CFC) of emulsionscontaining maltodextrin with DE of 16 (DE16), 12 (DE12), and 9 (DE9) were 11, 7, and 5.5 wt%,respectively. At maltodextrin concentrations below CFC, there was no change in Kc and nocreaming was observed. At maltodextrin concentrations above CFC, an increase in the concentrationof DE9 and DE12 resulted in an increase in Kc until it reached a constant value. Kcvalues remained to be constant in the concentration range between 30 and 40 wt% for DE9and that between 35 and 45 wt% for DE12. Further increasing in concentration of DE9 and 12decreased Kc. Kc of DE16 monotonically increased with increasing concentration from CFC to50 wt%. The rate of creaming decreased with increasing maltodextrin concentration overCFC until it reached zero. Creaming was not observed at maltodextrin concentrations morethan 35 wt% for DE9 and 40 wt% for DE12 whereas DE16 showed creaming at all concentrationsabove CFC. A maltodextrin with a lower DE inhibited creaming more efficiently thanmaltodextrin with a higher DE because of higher viscosities. The Kc tended to increase withdecreasing DE because the strength of interaction between oil droplets increased.
การแปล กรุณารอสักครู่..
