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The current state of PAT in freeze drying

11 November 2005 | By Michael Wiggenhorn, Gerhard Winter, Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Ludwig-Maximilians-University and Ingo Presser, Boehringer Ingelheim

Freeze drying is a widely used method to stabilise protein pharmaceuticals. The stability of proteins and the biological activity can be influenced by several factors, which may lead to conformational changes and to denaturation, aggregation or absorption to surfaces1.