TY - JOUR
T1 - Surface activities of monoacyl trehaloses in aqueous solution
AU - Chen, Jie
AU - Kimura, Yukitaka
AU - Adachi, Shuji
N1 - Funding Information:
Trehalose dihydrate was supplied by Hayashibara Co., Ltd., Okayama, Japan. We thank Dr. E. Nomura of the Industrial Technology Center of Wakayama Prefecture, Wakayama, Japan, for his NMR and MS analyses of the products.
PY - 2007/4
Y1 - 2007/4
N2 - Saturated and unsaturated fatty acids were condensed with trehalose using Candida antarctica lipase in an organic solvent to synthesize the corresponding monoacyl trehaloses. Their surface tension curves were measured at various concentrations and at different temperatures. The critical micelle concentrations, CMC, surface tension at the CMC, γCMC, and residual area per molecule, a, were estimated from the curves. The CMC of the saturated acyl trehaloses decreased as the acyl chain length increased at all temperatures. There was no significant dependency of the γCMC value on the chain length. The CMC values of the unsaturated monoacyl trehaloses having 18 carbon atoms in the acyl chain increased as the degree of unsaturation of the acyl chain increased. The a values were not affected by both the acyl chain length and the degree of unsaturation of the chain.
AB - Saturated and unsaturated fatty acids were condensed with trehalose using Candida antarctica lipase in an organic solvent to synthesize the corresponding monoacyl trehaloses. Their surface tension curves were measured at various concentrations and at different temperatures. The critical micelle concentrations, CMC, surface tension at the CMC, γCMC, and residual area per molecule, a, were estimated from the curves. The CMC of the saturated acyl trehaloses decreased as the acyl chain length increased at all temperatures. There was no significant dependency of the γCMC value on the chain length. The CMC values of the unsaturated monoacyl trehaloses having 18 carbon atoms in the acyl chain increased as the degree of unsaturation of the acyl chain increased. The a values were not affected by both the acyl chain length and the degree of unsaturation of the chain.
KW - Critical micelle concentration
KW - Monoacyl trehalose
KW - Surface activity
KW - Trehalose fatty acid ester
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U2 - 10.1016/j.lwt.2005.11.006
DO - 10.1016/j.lwt.2005.11.006
M3 - Article
AN - SCOPUS:33750433196
VL - 40
SP - 412
EP - 417
JO - LWT
JF - LWT
SN - 0023-6438
IS - 3
ER -