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http://dx.doi.org/10.3746/jkfn.2015.44.1.089

Physicochemical Properties of Supremo Coffee according to Grinding and Brewing Conditions  

Kang, Rhan-Kee (Department of Food Science & Nutrition, Hoseo University)
Min, Kwan-Sik (Graduate School of Future Convergence Technology, Hankyung National University)
Kang, Myung-Hwa (Department of Food Science & Nutrition, Hoseo University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.44, no.1, 2015 , pp. 89-96 More about this Journal
Abstract
Supremo coffee was light and dark brewed and grinded using different beans sizes. We determined physicochemical properties of Supremo coffee in the form of moisture, crude fat, crude protein, and crude ash contents. Moisture content was higher in beans of the dark brew than the light brew. Carbohydrate content was lower in the dark brew. However, crude fat, crude protein, and crude ash contents were higher in the dark brew. pH level was higher in beans of the dark. L value (brightness) decreased in the dark brew. a value (red coloring) and b value (yellow coloring) were both increased in the light brew and decreased in the dark brew. Stronger brewing resulted in lower a and b values. The contents of Ca, Fe, K, Na, and P were measured, and the results showed that K content was the highest. Total dietary fiber content was significantly higher than all other brewing parameters. Soluble dietary fiber content was 4.25 g/100 g in the dark brew and week grinding while insoluble dietary fiber was 63.49 g/100 g in the light brew and week grinding, which was the highest. Fatty acid composition was not significantly different according to brewing and grinding conditions. Supremo coffee contained acetic acid, propionic acid, oxalic acid, citric acid, and fumaric acid. In particular, contents of acetic acid and fumaric acid were highest. These results suggest that physicochemical properties of Supremo coffee are affected by different brewing and grinding conditions.
Keywords
Supremo; brewing; grinding; mineral contents; dietary fiber;
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