2014年8月
Analysis of supercooling activities of surfactants
CRYOBIOLOGY
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- 巻
- 69
- 号
- 1
- 開始ページ
- 10
- 終了ページ
- 16
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.cryobiol.2014.04.012
- 出版者・発行元
- ACADEMIC PRESS INC ELSEVIER SCIENCE
Supercooling-promoting activities (SCAs) of 25 kinds of surfactants including non-ionic, anionic, cationic and amphoteric types were examined in solutions (buffered Milli-Q water, BMQW) containing the ice nucleation bacterium (INB) Erwinia ananas, silver iodide (AgI) or BMQW alone, which unintentionally contained unidentified ice nucleators, by a droplet freezing assay. Most of the surfactants exhibited SCA in solutions containing AgI but not in solutions containing the INB E. ananas or BMQW alone. SCAs of many surfactants in solutions containing AgI were very high compared with those of previously reported supercooling-promoting substances. Cationic surfactants, hexadecyltrimethylammonium bromide (C16TAB) and hexadecyltrimethylammonium chloride (C16TAC), at concentrations of 0.01% (w/v) exhibited SCA of 11.8 degrees C, which is the highest SCA so far reported. These surfactants also showed high SCAs at very low concentrations in solutions containing AgI. C16TAB exhibited SCA of 5.7 degrees C at a concentration of 0.0005% (w/v). (C) 2014 Elsevier Inc. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.cryobiol.2014.04.012
- ISSN : 0011-2240
- eISSN : 1090-2392
- Web of Science ID : WOS:000340691700002