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5.2.2. Extraction of process related effects
Henson and Zhang [19] published an article on drug
characterisation of low dosage pharmaceutical tablets
using Raman microscopic mapping. Raman Images were
obtained using a Raman line-mapping instrument. Domain
size and spatial distribution of the API and major excipients
were estimated from Raman maps of the tablets. It
was demonstrated that domain size of the API was dependent
upon the particle size distribution of the ingoing API
material; therefore, the Raman maps could be used to indicate
the source of API used in tablet manufacturing. The
potential utility of Raman microscopic mapping in manufacturing
process optimization or predictive stability
assessments was also outlined.
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