Abstract:
:During the freezing step of a typical freeze drying process, the temperature at which nucleation is induced is generally stochastically distributed, resulting in undesired within-batch heterogeneity. Controlled nucleation techniques have been developed to address this problem; these make it possible to trigger the formation of ice crystals at the same time and temperature in all the batch. Here, the controlled nucleation technique known as vacuum induced surface freezing is compared to spontaneous freezing for the freeze drying of human plasma, a highly concentrated system commonly stored in a dried state. The potency of Factor VIII (FVIII), a sensitive, labile protein present in plasma, and the reconstitution time of the dried cakes are evaluated immediately after freeze drying, and after 1, 3, 6 or 9 months storage at different degradation temperatures. We show that the application of controlled nucleation significantly reduces the reconstitution time and in addition helps to improve FVIII stability.
journal_name
Int J Pharmjournal_title
International journal of pharmaceuticsauthors
Arsiccio A,Matejtschuk P,Ezeajughi E,Riches-Duit A,Bullen A,Malik K,Raut S,Pisano Rdoi
10.1016/j.ijpharm.2020.119290subject
Has Abstractpub_date
2020-05-30 00:00:00pages
119290eissn
0378-5173issn
1873-3476pii
S0378-5173(20)30274-Xjournal_volume
582pub_type
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