The sizes and the size distributions of all macromolecular populations were quantified with a Malvern NanoSight NS300 nanoparticle-tracking analyzer (Malvern instruments, Worcestershire, UK). Samples were passed through a 0.45 μm syringe filter before their insertion into the device’s measuring chamber. The conditions were: continuous phase viscosity 1 mPa s and temperature 25 °C. After successive dilutions and trial and error measurements using the appropriate buffers, results were recorded for 1:1 v/v okra polysaccharide (OP)–AS solutions, at a 0.05% final OP content. Measurements were taken for 60 s per run. Measurements were performed in triplicate.
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