Biocontrol Science
Online ISSN : 1884-0205
Print ISSN : 1342-4815
ISSN-L : 1342-4815
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Anti-Ice Nucleation Activities of Tyrosine Peptide
ERI TAGAWAMAYUMI URAERI NAKATSUKAYOSHIAKI HIRONOHIDEHISA KAWAHARA
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2018 Volume 23 Issue 2 Pages 81-83

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Abstract

 We investigated whether trimers of serine, threonine, tyrosine, and phenylalanine which may interact with water molecules and ice, show anti-ice nucleation activity. Only tyrosine trimer had high levels of anti-ice nucleation activity (10.10±0.74℃) at a final concentration of 0.2 mM. This was constant at an activity of 2.0℃ between the 0.01-0.1 mM concentrations, and rapidly increased at 0.1 mM or more. At the final concentration of 0.2 mM or more, the activity of the tyrosine trimer was almost constant (from 9.2℃ to 10.2℃). Although it is lower than the activity against silver iodide, the tyrosine trimer showed an effect on the activity of the ice nucleating bacteria. This is the first report that revealed that trimer of amino acid, especially tyrosine has the supercooling-facilitating activity.

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© 2018 The Society for Antibacterial and Antifungal Agents, Japan
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