Molecular and Crystal Structure of Spiculisporic Acid and Correlation with the Surface Activity
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- Ishigami Yutaka
- School of Chemical Engineering, Nanjing University of Science and Technology
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- Zhang Yuejun
- School of Chemical Engineering, Nanjing University of Science and Technology
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- Goto Midori
- Technical Center, National Institute of Advanced Industrial Science and Technology
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The crystal of spiculisporic acid, [4S, 5S-(4,5-dicarboxy-4-pentadecanolide)], is orthorhombic, and the space group is P21 21 21 with Z = 4 at 23°C. The cell dimensions are as follows, a = 43.82 (1) Å, b = 7.540 (2) Å, c = 5.579 (2) Å, V = 1843 (1) Å3. The molecules form intermolecular networks linked by hydrogen bonds around their polar carboxylic moieties. The hydrophobicity of the lactone ring (γ-butanolide) was evaluated at ca. 4 methylene linkages of n-alkyl chain from both of the molecular alignmental data and the surface active properties of sodium spiculisporates. Then, it was made clear that sodium spiculisporates, anionic polyfunctional biosurfactants, exerted a distinctive characteristic of lower critical micelle concentration (cmc) and γcmc (surface tension at the cmc), simultaneously, through their properties. On the other hand, sodium salts of the lactone-cleaved derivative of spiculisporic acid (O-acid), showed large dispersing and calcium ion sequestration properties due to their plural polar heads.
収録刊行物
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- Journal of Oleo Science
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Journal of Oleo Science 62 (10), 795-802, 2013
公益社団法人 日本油化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679068182656
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- NII論文ID
- 130004435988
- 40019794482
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- NII書誌ID
- AA11503337
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- COI
- 1:STN:280:DC%2BC2c%2FlvVansw%3D%3D
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- ISSN
- 13473352
- 13458957
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- NDL書誌ID
- 024858408
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- PubMed
- 24088517
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可