Fig 1.
Droplet size distributions of emulsions prepared with 7% (w/w) oil content at different OSA-modified starch concentrations.
A) Emulsions stabilized with granules. B) Emulsions stabilized with starch on the dissolved state. C) Mean volume diameter, D[4,3], of emulsions prepared with 7% (w/w) oil content at different OSA-modified starch concentrations stabilized both with granules or starch dissolved. D[4,3], was measured just after preparation and after 1 month under storage (1M).
Fig 2.
Micrographs of emulsions stabilized with OSA-modified starch granules (A-C) and OSA-modified starch in the dissolved state (B-D).
A,B) Emulsions prepared at 7% (w/w) oil and stabilized using 50 mg starch/ml oil. C,D) Emulsions prepared at 33% (w/w) oil and stabilized with 100 mg starch/ml oil. Scale bar: 10 μm.
Fig 3.
Kinetic ΔBS profiles of a 7% (w/w) oil emulsions.
A) Emulsions stabilized with OSA-modified starch granules at a concentration of 50 mg /ml oil. B) Emulsions stabilized with OSA-modified starch on the dissolved state at a concentration of 200 mg /ml oil. C, D) Turbiscan glass cells showing these emulsions respectively aspect after the monitoring time (1h). Note: Oil red EGN was added to visualize the eventual presence of free oil.
Table 1.
Backscattering variations, ΔBS, changes in diameters, Δd/do, and migration velocities in the middle of the cell for emulsions formulated with 7–33% (w/w) oil content at different concentrations of OSA-modified and native starch dissolved (molecules).
Fig 4.
Droplet size distributions of emulsions with 33% (w/w) oil content prepared at different OSA-modified starch concentrations.
A) Emulsions stabilized using granules. B) Emulsions stabilized using starch in solution. Droplet size distributions were measured after preparation and after 1 month under storage (1M).
Fig 5.
Kinetic ΔBS profiles of emulsions with 33% (w/w) oil content at different OSA-modified starch granules concentrations along the height of the cell.
A) Emulsions prepared at concentration of 100 mg starch/ml oil. B) Emulsions prepared at a concentration of 400 mg starch/ml oil. C) Turbiscan glass cells showing the emulsions aspect after the monitoring time. Note: Oil red EGN was added to visualize the eventual presence of free oil.
Fig 6.
Kinetic ΔBS profiles of 33% (w/w) oil emulsions prepared at different OSA-modified starch concentrations on the dissolved state along the whole height of the cell.
A) Emulsions stabilized using 50 mg starch/ml oil. B) Emulsions stabilized using 100 mg starch/ml oil. C) Turbiscan glass cells showing the emulsions aspect after the monitoring time. Note: Oil red EGN was added to visualize the eventual presence of free oil.
Fig 7.
Mean volume diameter, D[4,3], of emulsions prepared with 7% (w/w) oil content at different OSA-modified and native starch concentrations.
A) Emulsions stabilized with both types of starches in granules and on the dissolved state. B) Emulsions stabilized with mixtures of both; G:granules; D:dissolved.
Fig 8.
Micrographs of emulsions stabilized by mixtures of OSA-modified starch in the form of granules and on the dissolved state adding both at the same time at different concentrations.
A) 50 mg starch/ml oil. B) 100 mg starch/ml oil. C) 200 mg starch/ml oil. D) 400 mg starch/ ml oil. E) Adding first granules and then starch dissolved at 200 mg starch/ ml oil. Scale bar = 10 μm.