Assertion: amino acid leucine | /r/HasProperty | effective excipient
Facets:
Source sentences:
text: Amino acid L-leucine is an effective excipient that improves the properties of powder such as dispersibility, flowability, and stability [2, 4–7]. Surface accumulation of L-leucine on drug particle surfaces has been achieved by powder blending , surface-diffusion in spray-drying  and physical vapour deposition (PVD) .