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http://dx.doi.org/10.3746/jkfn.2016.45.2.298

Changes in Taste Compounds during Onion Vinegar Fermentation  

Jeong, Eun-Jeong (Department of Food and Nutrition, Changshin University)
Cha, Yong-Jun (Department of Food and Nutrition, Changwon National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.45, no.2, 2016 , pp. 298-305 More about this Journal
Abstract
Prior research has attempted to develop a method for fermentation of onion vinegar to satisfy customer quality standard. Onion wine (OW) and onion vinegar (OV) were produced by alcoholic and acetic fermentation of onion extracts (OE) using Saccharomyces cerevisiae and Acetobacter pasteurianus, and their taste compounds (non-volatile organic acids, non-protein N compounds, and free sugars) were determined. Main components of non-volatile organic acids were malic acid (50.1%) and citric acid (26.9%) in OE, whereas malic acid (28.1%), acetic acid (20.8%), lactic acid (20.1%), citric acid (13.3%), and succinic acid (12.0%) were detected in OW. Total concentrations of non-volatile organic acids in OV were 4,612.0 mg/100 g, which was 3.9 and 2.3 times higher than those of OE and OW, respectively. Non-volatile organic acids except malonic acid and acetic acid were reduced during acetic fermentation. Non-protein N compounds increased 4.23-fold ($41,526.8{\mu}g/100g$) during alcohol fermentation, and urea content was the highest of non-protein N compounds at $33,816{\mu}g/100g$. The reduced values in OV might be used as a nutritious element of Acetobacter pasteurianus. Free sugars (glucose, fructose, and sucrose) were detected in OE, whereas only fructose was absent in OW and OV.
Keywords
onion; onion wine; onion vinegar; taste compounds;
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Times Cited By KSCI : 16  (Citation Analysis)
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