Hydrogen Bonding of Water-Ethanol in Alcoholic Beverages
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概要
- 論文の詳細を見る
An alcoholic beverage is a type of water-ethanol solution with flavor and taste. The properties of the hydrogen bonding of water-ethanol in alcoholic beverages have not been clarified sufficiently. We investigated factors that could affect the hydrogen-bonding structure of water-ethanol on the basis of proton nuclear magnetic resonance (^1H NMR) chemical shifts of the OH of water-ethanol and Raman OH stretching spectra. Not only acids (H^+ and HA: undissociated acids) but also bases (OH^- and A^-: conjugate-base anions from weak acids) strengthened the hydrogen-bonding structure of water-ethanol. It was also demonstrated that the hydrogen bonding is strengthened by chemical components in alcoholic beverages (whiskey, Japanese sake, shochu). It can be suggested that hydrogen-bonding donors as well as acceptors in alcohol beverages, which exist as the initial components or are gained later on, should cause the tight association between water and ethanol molecules.
- 公益社団法人日本生物工学会の論文
- 2006-10-25
著者
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HOJO Masashi
Department of Chemistry, Faculty of Science, Kochi University
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Hojo Masashi
Department Of Chemistry Faculty Of Science Kochi University
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Nose Akira
Suigei Brewing Co. Ltd.
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Nose Akira
Suigei Brewing Co., Ltd.
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