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Title:

The contribution of the inherent restricted mobility of glassy sugar matrices the the overall stability of freeze-dried bacteria determined by low resolution solid state 1H-NMR

Document type:
Zeitschriftenaufsatz
Author(s):
Aschenbrenner, M.; Grammueller, E.; Kulozik, U.; Foerst, P.
Abstract:
The aim of this work was to evaluate whether, in case of freeze-dried bacteria, the protective effect of a surrounding glassy matrix can be ascribed to its inherent restrictedmolecular mobility. Lactobacillus paracasei ssp. paracasei together with three different protectants (lactose, trehalose and dextran) was freeze-dried and stored at different temperatures and water activities (aw). The spin--spin relaxation timeT2 was 1 determined by means of low resolution 1H-NMR spectroscow 2 py and de...     »
Keywords:
Bacteria; Freeze-drying; Glassy state; H-NMR-Stability; Molecular Mobility
Journal title:
Food and Bioprocess Technology
Year:
2014
Journal volume:
7
Pages contribution:
1012--1024
Fulltext / DOI:
doi:10.1007/s11947-013-1095-7
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