Monitoring Lidocaine Single-Crystal Dissolution by Ultraviolet Imaging
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Monitoring Lidocaine Single-Crystal Dissolution by Ultraviolet Imaging. / Ostergaard, Jesper; Ye, Fengbin; Rantanen, Jukka; Yaghmur, Anan; Larsen, Susan Weng; Larsen, Claus Selch; Jensen, Henrik.
In: Journal of Pharmaceutical Sciences, Vol. 100, No. 8, 08.2011, p. 3405-3410.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Monitoring Lidocaine Single-Crystal Dissolution by Ultraviolet Imaging
AU - Ostergaard, Jesper
AU - Ye, Fengbin
AU - Rantanen, Jukka
AU - Yaghmur, Anan
AU - Larsen, Susan Weng
AU - Larsen, Claus Selch
AU - Jensen, Henrik
PY - 2011/8
Y1 - 2011/8
N2 - Dissolution critically affects the bioavailability of Biopharmaceutics Classification System class 2 compounds. When unexpected dissolution behaviour occurs, detailed studies using high information content technologies are warranted. In the present study, an evaluation of real‐time ultraviolet (UV) imaging for conducting single‐crystal dissolution studies was performed. Using lidocaine as a model compound, the aim was to develop a setup capable of monitoring and quantifying the dissolution of lidocaine into a phosphate buffer, pH 7.4, under stagnant conditions. A single crystal of lidocaine was placed in the quartz dissolution cell and UV imaging was performed at 254 nm. Spatially and temporally resolved mapping of lidocaine concentration during the dissolution process was achieved from the recorded images. UV imaging facilitated the monitoring of lidocaine concentrations in the dissolution media adjacent to the single crystals. The concentration maps revealed the effects of natural convection due to density gradients on the dissolution process of lidocaine. UV imaging has great potential for in vitro drug dissolution testing
AB - Dissolution critically affects the bioavailability of Biopharmaceutics Classification System class 2 compounds. When unexpected dissolution behaviour occurs, detailed studies using high information content technologies are warranted. In the present study, an evaluation of real‐time ultraviolet (UV) imaging for conducting single‐crystal dissolution studies was performed. Using lidocaine as a model compound, the aim was to develop a setup capable of monitoring and quantifying the dissolution of lidocaine into a phosphate buffer, pH 7.4, under stagnant conditions. A single crystal of lidocaine was placed in the quartz dissolution cell and UV imaging was performed at 254 nm. Spatially and temporally resolved mapping of lidocaine concentration during the dissolution process was achieved from the recorded images. UV imaging facilitated the monitoring of lidocaine concentrations in the dissolution media adjacent to the single crystals. The concentration maps revealed the effects of natural convection due to density gradients on the dissolution process of lidocaine. UV imaging has great potential for in vitro drug dissolution testing
KW - Former Faculty of Pharmaceutical Sciences
U2 - 10.1002/jps.22532
DO - 10.1002/jps.22532
M3 - Journal article
C2 - 21387316
VL - 100
SP - 3405
EP - 3410
JO - Journal of Pharmaceutical Sciences
JF - Journal of Pharmaceutical Sciences
SN - 0022-3549
IS - 8
ER -
ID: 33619222