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Fluorescence spectroscopic and viscosity studies of hydrogen bonding in Chinese Fenjiu

Paper ID Volume ID Publish Year Pages File Format Full-Text
20515 43178 2013 7 PDF Available
Title
Fluorescence spectroscopic and viscosity studies of hydrogen bonding in Chinese Fenjiu
Abstract

The associative behavior of ethanol with water and total hydrogen bonding property in Chinese Fenjiu were examined on the basis of fluorescence and viscosity measurements, respectively. Ethyl esters and acetic acid initially strengthened and then weakened ethanol–water hydrogen-bonding structure, while sodium chloride exhibited its enhanced effect. The fluorescence intensities and viscosities were measured for 12 Fenjiu samples of a distillery, aged for 0–20 years in two different types of containers. The ethanol–water fluorescence intensities and viscosities of Fenjiu samples are proportional to their contents of sodium ion and opposite to their contents of total esters. It can be concluded that the strength of the ethanol–water hydrogen bonding as well as the total hydrogen bonding in aged Fenjiu are directly predominated by total esters lost and sodium ion gained in ceramic containers and not dependent on just the aging time.

► The ethanol–water hydrogen bonding in Fenjiu was measured by fluorescence spectrum. ► The total hydrogen bonding in Fenjiu was assessed by viscosity. ► The hydrogen bonding strength in Fenjiu was found to not depend on the aging time.

Keywords
Fluorescence spectroscopy; Viscosity; Hydrogen bonding; Ethanol–water cluster; Chinese distilled spirits; Fenjiu
First Page Preview
Fluorescence spectroscopic and viscosity studies of hydrogen bonding in Chinese Fenjiu
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 115, Issue 4, April 2013, Pages 405–411
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering