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http://dx.doi.org/10.3746/jkfn.2014.43.11.1731

Quality Characteristics of Fermented Wild Grass Juice  

Ahn, Yoo-Bok (Department of Food Science & Technology, Catholic University of Daegu)
Kang, Kyoung-Myoung (Department of Food Science & Technology, Catholic University of Daegu)
Kim, Jin-Hak (Department of Food Science & Technology, Catholic University of Daegu)
Park, La-Young (Department of Food Science & Technology, Catholic University of Daegu)
Lee, Shin-Ho (Department of Food Science & Technology, Catholic University of Daegu)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.43, no.11, 2014 , pp. 1731-1736 More about this Journal
Abstract
The quality characteristics, enzyme activity, and antioxidative activity of fermented wild grass juices were investigated during fermentation and ripening for 6 months. Fermented wild grass juice was prepared from wild grasses (Oenothera biennis, Portulaca oleracea, and Rhus verniciflua) and sugar. Wild grasses and sugar mixed at the same ratio (1:1, w/w) and ripened at $20^{\circ}C$ for 3 months after fermentation for 3 months at $20^{\circ}C$. The $^{\circ}Bx$ of all fermented wild grass juices (FWGJ) decreased during fermentation. The pH of all FWGJ decreased gradually during fermentation and did not show any significant difference during ripening. Viscosity of FWGJ increased during fermentation but decreased during ripening periods in all tested samples. Total viable cell of FWGJ decreased after fermentation for 1 month, whereas lactic acid bacteria were not detected during fermentation. Enzyme activity was lower than 1 unit during fermentation and ripening period in all tested FWGJ samples. Enzyme activity of commercial FWGJ (Acanthopanax sessiliflorum, Oenanthe javanica, Plantago asiatica L., Platycodon grandiflorum, Orostachys japonicus A.) showed lower activity of 1 unit following invertase, cellulase, and amylase activity.
Keywords
wild grass; antioxidant activity; quality characteristics; phenolic compounds; fermentation;
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Times Cited By KSCI : 9  (Citation Analysis)
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