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Theoretical Estimation of the Optimum Cooling Rate of a Cell Suspension at Linear Freezing Modes Based on a Two Factor Theory of Cryodamage

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BACKGROUND: According to the two-factor theory cryodamage arises from intracellular crystallization and solution effects due to freeze concentration. OBJECTIVE: The study aims to evaluate the contribution of two types of cryodamages that are related to extra- and intracellular crystallization. METHODS: The probability of intracellular crystal formation during cooling of cell suspension in cryoprotective solution has been determined based on general thermodynamics theory. RESULTS: According to the obtained correlations and taking into account of the individual characteristics of yeast cells and murine enterocytes, the optimal cooling rates during freezing of these cells in cryoprotectant solutions were determined. CONCLUSION: The proposed algorithm for the estimation of the optimal cooling rates at linear freezing mode of a particular cellular suspension can be utilized to develope methods for cryopreservation of different cell suspensions.
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Keywords: CRYODAMAGE; CRYOPRESERVATION; FREEZE CONCENTRATION; INTRACELLULAR CRYSTALLIZATION; MURINE ENTEROCYTES; SACCHAROMYCES CEREVISIAE

Document Type: Research Article

Publication date: November 1, 2018

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  • CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

    The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

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