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Hexagonal shaped ice spicules in frozen antifreeze protein solutions

Citation

Wilson, PW and Gould, M and DeVries, AL, Hexagonal shaped ice spicules in frozen antifreeze protein solutions, Cryobiology: International Journal of Low Temperature Biology, 44, (3) pp. 240-50. ISSN 0011-2240 (2002) [Refereed Article]

DOI: doi:10.1016/S0011-2240(02)00028-7

Abstract

In the presence of antifreeze proteins from both Antarctic and Arctic fishes, water freezes in the form of long c-axis spikes or spicular-like crystals. Transmission electron microscopy of the Pt/C replicas of the freeze fractured spicular ice in a small capillary revealed the presence of many hexagonally shaped structures whose cross-sectional dimensions were between 0.5 and 10 microm. Well-defined parallel faces were associated with most fractured and etched spicules. When fracture planes occurred near the tip of a spicule, well-defined pyramidal faces were apparent. Steps were sometimes associated with these pyramidal spicular crystal faces. On some of the replicas obvious roughening of certain crystal faces of the spicule was observed, suggesting that the antifreeze proteins may have adsorbed to those faces.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Organic Chemistry
Research Field:Physical Organic Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
UTAS Author:Wilson, PW (Professor Peter Wilson)
ID Code:99766
Year Published:2002
Web of Science® Times Cited:8
Deposited By:Faculty of Health
Deposited On:2015-04-08
Last Modified:2015-04-08
Downloads:0

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