Accelerated stability assays
After 24 h of their manipulation, the stable
nanoemulsions were subjected to preliminary assays
to determine its stability through centrifugation and
thermal stress processes (Ferrari & Rocha Filho,
2011).
Centrifugation process
An amount of nanoemulsion (3.0 mL) was
inserted into the centrifugal tubes and subjected to
1398 g, during 1 h, using the Excelsa Baby Fanem®
II Centrifuge. Then, the material was analyzed
macroscopically and submitted to a new centrifugation
process for creaming and separation of phases. The
process was realized in triplicate. To further analysis
were considered the pre-stable formulations that did
not show phase separation or creaming after the assay.