Determination of the total phenolics in juices and superfruits by a novel chemical method

Autor: Marjorie B. Medina
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Zdroj: Journal of Functional Foods, Vol 3, Iss 2, Pp 79-87 (2011)
Druh dokumentu: article
ISSN: 1756-4646
DOI: 10.1016/j.jff.2011.02.007
Popis: The total phenols in foods and beverages are currently measured with Folin–Ciocalteu, through its reducing capacity. A novel method was developed to quantify polyphenols or phenolic compounds through direct interactions of polyphenols with Fast Blue BB in an alkaline medium and the absorbance was measured at 420 nm. The gallic acid calibration lines (0–500 μg/mL) had a linear correlation (R) greater than 0.99 in all analysis. The limit of detection was
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