3.1.2. Particle size distribution
Fig.3. shows the droplet size distribution of ultrasonic-treaded husk
emulsion gel with different inulin concentration.
(Place for figure 3)
Fig. 3. Particle size analysis of ultrasonic-treated 3% psyllium husk
emulsion gel with different concentration of inulin.
The particle size analysis of the emulsion gel system indicated one
sharp peak that shifted progressively to the left towards smaller
droplet size with increase in inulin concentration (Fig. 3). The result
revealed that emulsion droplets were more uniformly distributed, and the
number of smaller droplets kept increasing in the emulsion gels.
Reduction of droplet size may be due to increased polysaccharide
concentration resulting in stronger and more compact gel-network, which
entrapped emulsion oil droplets and reduced droplet aggregation (Xu et
al., 2020). In addition, inulin was available to wrap the oil droplet
surface which limited the movement of emulsion droplets and prevented
their aggregation, resulting in smaller oil droplets and more stable
emulsion (Sarkar et al., 2018; Hu et al.,
2020). These results were further
confirmed by PLM and SEM image.