Free and bound water influence on Spirulina platensis survival

The heat effects arising at heating of Spirulina platensis cell culture containing different quantity of water (from 98.2 to 10.5 mass% H2O) have been studied. The hydration of Sp. pl. cells determined by the method of microcalorimetry at 25 deg C (Deltan) was equal to 0.32+/-0.02 g H2O/g of dry bio...

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Bibliographic Details
Published in:Journal of Thermal Analysis and Calorimetry 2006-05, Vol.84 (3), p.613-618
Main Authors: MONASELIDZE, J, KILADZE, Maya, TANANASHVILI, D, BARBAKADZE, Shota, NASKIDASHVILI, A, KHIZANISHVILI, Anna, KVAVADZE, R, MAJAGALADZE, G
Format: Article
Language:English
Subjects:
Algal culture (microalgae)
Biological and medical sciences
Biotechnology
Fundamental and applied biological sciences. Psychology
Methods. Procedures. Technologies
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Summary:The heat effects arising at heating of Spirulina platensis cell culture containing different quantity of water (from 98.2 to 10.5 mass% H2O) have been studied. The hydration of Sp. pl. cells determined by the method of microcalorimetry at 25 deg C (Deltan) was equal to 0.32+/-0.02 g H2O/g of dry biomass. The heat (-Q) evolved by cells in the temperature range 5-52 deg C decreased exponentially at decrease of mass% H2O and reached zero value at 30.5+/-3.0 mass% H2O. The total heat of cell denaturation did not change in the range 98.2-40.5 mass% H2O and it sharply dropped at lower values of water.
ISSN:1388-6150
1588-2926
1572-8943
0368-4466
DOI:10.1007/s10973-005-7023-y