Towards simultaneous determination of tablet porosity and height by terahertz time-domain reflection spectroscopy
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Towards simultaneous determination of tablet porosity and height by terahertz time-domain reflection spectroscopy. / Anuschek, Moritz; Kvistgaard Vilhelmsen, Thomas; Axel Zeitler, J.; Rantanen, Jukka.
In: International Journal of Pharmaceutics, Vol. 646, 123424, 2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Towards simultaneous determination of tablet porosity and height by terahertz time-domain reflection spectroscopy
AU - Anuschek, Moritz
AU - Kvistgaard Vilhelmsen, Thomas
AU - Axel Zeitler, J.
AU - Rantanen, Jukka
N1 - Funding Information: Novo Nordisk A/S (Bagsværd, Denmark) has financed the PhD project of Moritz Anuschek (STAR program). Thomas Kvistgaard Vilhelmsen is employed at Novo Nordisk A/S. Jukka Rantanen and J. Axel Zeitler have not received any consulting fees from Novo Nordisk A/S. Publisher Copyright: © 2023
PY - 2023
Y1 - 2023
N2 - The quality control of pharmaceutical tablets is still based on testing small sample numbers using at- and off-line testing methods. Traditional in-process controls, such as tablet mass, height, mechanical strength, and disintegration time are time- and resource-consuming and poorly suited to support an effective transition towards continuous manufacturing. Another suitable parameter to monitor during production would be tablet porosity. Porosity can be linked to mechanical strength and disintegration but typically requires knowledge of tablet dimensions and mass. Tablet porosity measurements based on terahertz time-domain spectroscopy (THz-TDS) offer a fast and non-destructive approach to in-process control testing for physical tablet properties. This study presents THz-TDS reflection measurements as an alternative to the previously reported transmission setup. It is shown that the proposed method can determine porosity based on the reflected amplitude from the tablet surface, but also allows for precise determination of tablet height in the same measurement. The tablet mass can be estimated by combining the height and porosity measurements. This opens up for the opportunity to determine the tablet's mechanical strength by using the possible correlation to the determined porosity.
AB - The quality control of pharmaceutical tablets is still based on testing small sample numbers using at- and off-line testing methods. Traditional in-process controls, such as tablet mass, height, mechanical strength, and disintegration time are time- and resource-consuming and poorly suited to support an effective transition towards continuous manufacturing. Another suitable parameter to monitor during production would be tablet porosity. Porosity can be linked to mechanical strength and disintegration but typically requires knowledge of tablet dimensions and mass. Tablet porosity measurements based on terahertz time-domain spectroscopy (THz-TDS) offer a fast and non-destructive approach to in-process control testing for physical tablet properties. This study presents THz-TDS reflection measurements as an alternative to the previously reported transmission setup. It is shown that the proposed method can determine porosity based on the reflected amplitude from the tablet surface, but also allows for precise determination of tablet height in the same measurement. The tablet mass can be estimated by combining the height and porosity measurements. This opens up for the opportunity to determine the tablet's mechanical strength by using the possible correlation to the determined porosity.
U2 - 10.1016/j.ijpharm.2023.123424
DO - 10.1016/j.ijpharm.2023.123424
M3 - Journal article
C2 - 37722493
AN - SCOPUS:85172722757
VL - 646
JO - International Journal of Pharmaceutics
JF - International Journal of Pharmaceutics
SN - 0378-5173
M1 - 123424
ER -
ID: 369860361