Active freeze drying for production of nanocrystal-based powder: a pilot study

A Touzet, F Pfefferlé, P van der Wel… - International journal of …, 2018 - Elsevier
Abstract Active Freeze Drying allows for producing lyophilised powders by progressive
agitation of frozen blocks undergoing sublimation. One potential application of this process …

The application of freeze-drying as a production method of drug nanocrystals and solid dispersions–A review

E Jakubowska, J Lulek - Journal of Drug Delivery Science and Technology, 2021 - Elsevier
This work reviews the examples of the application of lyophilization and its cryogenic
modifications as the production method of solid dispersions and drug nanocrystals, two …

Mechanism of freeze-drying drug nanosuspensions

NO Chung, MK Lee, J Lee - International journal of pharmaceutics, 2012 - Elsevier
Drug nanoparticles prepared in a liquid medium are commonly freeze-dried for the
preparation of an oral dosage in solid dosage form. The freezing rate is known to be a …

Critical freezing rate in freeze drying nanocrystal dispersions

J Lee, Y Cheng - Journal of controlled release, 2006 - Elsevier
Recent advances in nanoparticle technologies have significantly enhanced the oral and
parenteral delivery of poorly water-soluble active pharmaceutical ingredients (APIs) …

Freeze drying of nanosuspensions, 2: The role of the critical formulation temperature on stability of drug nanosuspensions and its practical implication on process …

J Beirowski, S Inghelbrecht, A Arien… - Journal of pharmaceutical …, 2011 - Elsevier
The present study investigates whether controlling the product temperature below the critical
formulation temperature (CFT) during primary drying in a freeze drying cycle is a …

Preparation of drug nanocrystals by controlled crystallization: application of a 3-way nozzle to prevent premature crystallization for large scale production

H de Waard, N Grasmeijer, WLJ Hinrichs… - European Journal of …, 2009 - Elsevier
In a previous study we have developed a novel process to produce drug nanocrystals. This
process,“controlled crystallization during freeze-drying” has shown to be a successful …

A novel bottom–up process to produce drug nanocrystals: controlled crystallization during freeze-drying

H De Waard, WLJ Hinrichs, HW Frijlink - Journal of controlled release, 2008 - Elsevier
To improve the dissolution behavior of lipophilic drugs, a novel bottom–up process based
upon freeze drying which allows for the production of nanocrystalline particles was …

Freeze-drying of nanosuspensions, 1: freezing rate versus formulation design as critical factors to preserve the original particle size distribution

J Beirowski, S Inghelbrecht, A Arien… - Journal of pharmaceutical …, 2011 - Elsevier
It has been recently reported in the literature that using a fast freezing rate during freeze-
drying of drug nanosuspensions is beneficial to preserve the original particle size …

[HTML][HTML] Freeze-drying of drug nanosuspension–study of formulation and processing factors for the optimization and characterization of redispersible cilostazol …

E Jakubowska, M Bielejewski, B Milanowski… - Journal of Drug Delivery …, 2022 - Elsevier
The aim of this work was to systematically study the effect of freeze-drying of bottom-up
processed cilostazol nanosuspension on the particle size after redispersion. Several …

Formulation parameters of crystalline nanosuspensions on spray drying processing: a DoE approach

S Kumar, X Xu, R Gokhale, DJ Burgess - International Journal of …, 2014 - Elsevier
Nanocrystalline suspensions offer a promising approach to improve dissolution of BCS class
II/IV compounds. Spray drying was utilized as a downstream process to improve the physical …