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http://dx.doi.org/10.3746/jkfn.2009.38.3.372

A Comparative Analysis for Main Components Change during Natural Fermentation of Persimmon Vinegar  

Lee, Sang-Hyun (Center of Smart Foods and Drugs, Inje University)
Kim, Jae-Cherl (Center of Smart Foods and Drugs, Inje University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.38, no.3, 2009 , pp. 372-376 More about this Journal
Abstract
Physicochemical changes in persimmon were examined during natural organic acid fermentation. Major organic acids in raw persimmon juices were lactic acid (980 mg%) and acetic acid (245 mg%). The content of acetic acid was continuously increased during the whole period of fermentation up to 3 years. Glucose was the dominant free sugar, but the content was decreased after 20 days of fermentation. Most of the glucose was converted to ethanol until 40 days after initiation of acid fermentation. L- and a values of Hunter's color in fermented persimmon juice, which was naturally exuded from persimmon fruit as fermentation continued, increased gradually, while b value decreased. Acetic acid (1584 mg%) was the most abundant organic acid followed by lactic acid (712 mg%) and citric acid (48 mg%) in a persimmon fruit juice after completion of 3 year fermentation. A minute amount of residual free sugars, mainly glucose, even after 3 years of fermentation may cause changes in quality characteristics while storage for edible use.
Keywords
persimmon; vinegar; natural fermentation; manufacturing process; physicochemical property;
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