The average droplet diameter of the alginate solution containing
Tween 80 was 135 nm (Fig. 2A). Nevertheless, in the droplet
size distribution (Fig. 1) we detected two main intensity peaks, a
larger intensity peak of around 10 nm corresponding to surfactant
micelles, and another minor peak of bigger particles of around
1000 nm being attributed to colloidal aggregates of sodium
alginate. The droplet size of conventional emulsions decreased
from 1775 to 494 nm when decreasing the oil content in the
formulation from 1% to 0.1%. Similarly, after being processed by
microfluidization, the droplet diameter ranged between 364 and
62 nm, being smaller at lower concentrations of oil. This trend
might be expected since the surfactant molecules are adsorbed in
The average droplet diameter of the alginate solution containingTween 80 was 135 nm (Fig. 2A). Nevertheless, in the dropletsize distribution (Fig. 1) we detected two main intensity peaks, alarger intensity peak of around 10 nm corresponding to surfactantmicelles, and another minor peak of bigger particles of around1000 nm being attributed to colloidal aggregates of sodiumalginate. The droplet size of conventional emulsions decreasedfrom 1775 to 494 nm when decreasing the oil content in theformulation from 1% to 0.1%. Similarly, after being processed bymicrofluidization, the droplet diameter ranged between 364 and62 nm, being smaller at lower concentrations of oil. This trendmight be expected since the surfactant molecules are adsorbed in
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