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A Scale-up Approach for Film Coating Process Based on Surface Roughness as the Critical Quality Attribute

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Abstract

Scale-up approaches for film coating process have been established for each type of film coating equipment from thermodynamic and mechanical analyses for several decades. The objective of the present study was to establish a versatile scale-up approach for film coating process applicable to commercial production that is based on critical quality attribute (CQA) using the Quality by Design (QbD) approach and is independent of the equipment used. Experiments on a pilot scale using the Design of Experiment (DoE) approach were performed to find a suitable CQA from surface roughness, contact angle, color difference, and coating film properties by terahertz spectroscopy. Surface roughness was determined to be a suitable CQA from a quantitative appearance evaluation. When surface roughness was fixed as the CQA, the water content of the film-coated tablets was determined to be the critical material attribute (CMA), a parameter that does not depend on scale or equipment. Finally, to verify the scale-up approach determined from the pilot scale, experiments on a commercial scale were performed. The good correlation between the surface roughness (CQA) and the water content (CMA) identified at the pilot scale was also retained at the commercial scale, indicating that our proposed method should be useful as a scale-up approach for film coating process.

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Authors and Affiliations

  1. Pharmaceutical Research & Technology Laboratories, Astellas Pharma Inc., 180 Ozumi, Yaizu, Shizuoka, 425-0072, Japan

    Hiroyuki Yoshino, Yuko Hara, Masafumi Dohi, Kazunari Yamashita & Tadashi Hakomori

  2. Department of Pharmaceutical Engineering, Graduate School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan

    Hiroyuki Yoshino, Shin-ichiro Kimura, Yasunori Iwao & Shigeru Itai

Authors
  1. Hiroyuki Yoshino
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  2. Yuko Hara
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  3. Masafumi Dohi
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  4. Kazunari Yamashita
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  5. Tadashi Hakomori
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  6. Shin-ichiro Kimura
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  7. Yasunori Iwao
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  8. Shigeru Itai
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Correspondence to Shigeru Itai.

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Yoshino, H., Hara, Y., Dohi, M. et al. A Scale-up Approach for Film Coating Process Based on Surface Roughness as the Critical Quality Attribute. AAPS PharmSciTech 19, 1243–1253 (2018). https://doi.org/10.1208/s12249-017-0940-9

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  • DOI: https://doi.org/10.1208/s12249-017-0940-9

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