Nucleation in the presence of fish and insect ice-growth inhibition (“antifreeze”) molecules

Haymet, A. D. J.; Heneghan, Aaron; Wilson, Peter W.; Zachariassen, Karl Erik; Ramlo\v, Hans
August 2000
AIP Conference Proceedings;2000, Vol. 534 Issue 1, p410
Academic Journal
Temperature plays an essential role in the survival of all organisms. For example, some organisms have adapted to situations that would otherwise be unfavorable to the survival of that organism. The fish winter flounder from the Arctic and the bark beetle from Norway are capable of withstanding temperatures well below the equilibrium freezing temperature of their inner fluids. This avoidance of freezing is attained through the ability to suppress crystal growth. The reason for this avoidance stems from a class of "antifreeze" molecules, but it is not fully understood at the molecular level why or by what mechanism these organisms are able to exhibit this property. A separate but equally interesting question is the nucleation properties of these molecules. By using the automated lag time apparatus (ALTA) for collecting statistics of nucleation on a single sample, we study this phenomenon.


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