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Int. J. Mol. Sci. 2009, 10(11), 4941-4952; doi:10.3390/ijms10114941
Article

Peanut Skin Color: A Biomarker for Total Polyphenolic Content and Antioxidative Capacities of Peanut Cultivars

, *  and
Received: 23 September 2009; in revised form: 4 November 2009 / Accepted: 5 November 2009 / Published: 11 November 2009
(This article belongs to the Special Issue Phenolics and Polyphenolics)
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Abstract: Attempts to establish a relationship between peanut skin color (PSC) and total flavonoid (TF) content have produced inconclusive results. This study investigated the potential of PSC as a biomarker for polyphenol content and antioxidant capacity. Peanut cultivars were objectively evaluated for their skin color, total phenolic (TP), flavonoid (TF), proanthocyanidin (TPC) contents and antioxidant capacities (AC). Their relationship was determined by Pearson’s correlation analyses. TP had stronger correlations with CIE a*, hue angle and AC (r2 = 0.77, 0.82 and 0.80, respectively) compared to TF. Therefore, hue angle of peanut skin may be used as a biomarker for TP content rather than TF.
Keywords: peanut (Arachis hypogaea L.); groundnut; skin color; polyphenols; flavonoids proanthocyanidin; cultivars; biomarker peanut (Arachis hypogaea L.); groundnut; skin color; polyphenols; flavonoids proanthocyanidin; cultivars; biomarker
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Chukwumah, Y.; Walker, L.T.; Verghese, M. Peanut Skin Color: A Biomarker for Total Polyphenolic Content and Antioxidative Capacities of Peanut Cultivars. Int. J. Mol. Sci. 2009, 10, 4941-4952.

AMA Style

Chukwumah Y, Walker LT, Verghese M. Peanut Skin Color: A Biomarker for Total Polyphenolic Content and Antioxidative Capacities of Peanut Cultivars. International Journal of Molecular Sciences. 2009; 10(11):4941-4952.

Chicago/Turabian Style

Chukwumah, Yvonne; Walker, Lloyd T.; Verghese, Martha. 2009. "Peanut Skin Color: A Biomarker for Total Polyphenolic Content and Antioxidative Capacities of Peanut Cultivars." Int. J. Mol. Sci. 10, no. 11: 4941-4952.


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