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http://dx.doi.org/10.3746/jkfn.2016.45.2.202

Physicochemical Properties and Antioxidant Activities of Fermented Mulberry by Lactic Acid Bacteria  

Lee, Dae-Hoon (Department of Food Science and Technology, Catholic University of Daegu)
Hong, Joo-Heon (Department of Food Science and Technology, Catholic University of Daegu)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.45, no.2, 2016 , pp. 202-208 More about this Journal
Abstract
The physicochemical properties and antioxidant activities of fermented mulberry by lactic acid bacteria were investigated. The viable cell counts of lactic acid bacteria slowly increased up to 8.31 log CFU/mL. The pH and titratable acidity were 3.90 and 0.15%, respectively, after 24 h of fermentation. Color in terms of L and a values decreased, whereas b and ${\Delta}E$ values increased. The total anthocyanin contents of fermented mulberry (171.40 mg/100 g) was higher than that of mulberry (144.70 mg/100 g). The cyanidin-3-glucoside and cyanidin-3-rutinoside contents of fermented mulberry were 61.39 mg/100 g and 85.45 mg/100 g, respectively. Total phenolic and flavonoid contents of fermented mulberry (10.75 g/100 g and 5.02 g/100 g, respectively) was higher than those of mulberry (4.53 g/100 g and 1.77 g/100 g, respectively). The oxygen radical absorbance capacity of fermented mulberry was $292.94{\mu}M/g$. The 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity and superoxide radical scavenging activity of fermented mulberry at $250{\sim}2,500{\mu}g/mL$ were 17.40~58.21% and 32.63~87.34%, respectively. The ferric reducing antioxidant power and reducing power of fermented mulberry at $250{\sim}2,500{\mu}g/mL$ were $37.03{\sim}762.13{\mu}M$ and 0.12~0.74, respectively. The results suggest that mulberry fermented by lactic acid bacteria has potential as functional materials in food industry.
Keywords
lactic acid bacteria; mulberry; anthocyanin; physicochemical properties; antioxidant activity;
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