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Table 1 Water uptake by spray dried NP powder over 6-month stability time course

From: Spray drying OZ439 nanoparticles to form stable, water-dispersible powders for oral malaria therapy

Time in oven 0 days 2 months 6 months
Water content (w/w) Below detection limit (< ~ 4%) Below detection limit (< ~ 4%) 6.26%
  1. Immediately following spray drying and after 2 months in the oven, water content was below the detection limit of the KF titrator. By the end of 6 months, the powder had accumulated a small amount of water, which did not adversely affect OZ439 solubilization