Miyata K, Hayakawa S, Kajiwara K, Kanno H. Supercooling and vitrification of aqueous glycerol solutions at normal and high pressures.
Cryobiology 2012;
65:113-6. [PMID:
22609515 DOI:
10.1016/j.cryobiol.2012.05.002]
[Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 04/18/2012] [Accepted: 05/02/2012] [Indexed: 10/28/2022]
Abstract
The supercooling and vitrification of aqueous glycerol solutions was studied at high pressures. Homogeneous ice nucleation temperatures (T(H)) were obtained for aqueous glycerol solutions of R=50, 30, 20, 12, and 10 (R: moles of water/moles of glycerol) up to 300MPa. The R=20 glycerol solution formed a glass above 200MPa at a cooling rate of 200°C/min, indicating that pressure enhances glass-formation of aqueous glycerol solutions. The (dT(g)/dP) values were obtained for vitrified aqueous glycerol solutions of R=3, 5, 10, and 20. These data can be used for the development of cryo-preservation liquids for living cells at high pressures.
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