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Journal Article

Journal Article

Quality Characteristics and Antioxidant Activity of Espresso Coffee Prepared with Green Bean Fermented by Lactic Acid Bacteria  [2016]

Kim, D.H., Chungbuk National University, Cheongju, Republic of Korea; Yeon, S.J., Chungbuk National University, Cheongju, Republic of Korea; Jang, K.I., Chungbuk National University, Cheongju, Republic of Korea;

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This study investigated the quality characteristics and antioxidant activities of espresso coffee prepared with green bean fermented by lactic acid bacteria. First, 10, 20, and 30% (w/v) green beans were fermented by Lactobacillus acidophilus KCTC 3145 at 37Celsius for 0, 12, and 24 h, respectively. Cells of L. acidophilus gradually increased with increasing green bean content and fermentation time. After drying fermented green beans, coffee powders were prepared by roasting (city level) and grinding (less than 75 mesh). Then, espresso coffee was extracted using coffee powder. The pH and chromaticity (L*, a*, and b* values) of espresso coffee decreased with fermentation time, whereas total acidity, total soluble solid contents, and brown color intensity increased. The pH level decreased with increasing contents of fermented green bean and total acidity increased. However, chromaticity, total soluble solid contents, and brown color intensity remained within a limited range. The antioxidant activities, including total polyphenol content, and DPPH and ABTS radical scavenging activities increased with increasing green bean content and fermentation time. Finally, sensory evaluation -for taste, color, flavor, and overall preference- revealed espresso coffee prepared with fermentation of 30% (w/v) green bean received the highest scores. Green bean fermented by lactic acid bacteria enhanced quality characteristics and antioxidant activities of espresso coffee, sho
wing that lactic acid bacteria fermentation has potential use in the espresso coffee industry.
From the journal
Journal of The Korean Society of Food Science and Nutrition
ISSN : 1226-3311

Bibliographic information

Language:
Korean
Type:
Directory
In AGRIS since:
2018
Volume:
45
Issue:
12
Start Page:
1799
End Page:
1807
All titles:
"Quality Characteristics and Antioxidant Activity of Espresso Coffee Prepared with Green Bean Fermented by Lactic Acid Bacteria"@eng
Other:
"Summary(En)"
"4 tables"
"1ill., 45 ref."
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Bibliographic information

Language:
Korean
Type:
Directory
In AGRIS since:
2018
Volume:
45
Issue:
12
Start Page:
1799
End Page:
1807
All titles:
"Quality Characteristics and Antioxidant Activity of Espresso Coffee Prepared with Green Bean Fermented by Lactic Acid Bacteria"@eng
Other:
"Summary(En)"
"4 tables"
"1ill., 45 ref."