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Differences in the content of major antioxidants contained in potatoes with various coloured tuber flesh

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Hamouz K., Lachman J., Dvorak P., Hejtmankova K., Vacek J.

Zeszyty Problemowe Postępów Nauk Rolniczych

2010

tom 557

The aim of this study was to examine the effect of genotype in a total of twelve varieties with purple- and red-fleshed tubers on the content of important antioxidants - total polyphenols (TP), ascorbic acid (AA) and total anthocyanins (TA). Precise field experiments were performed in 2008 and 2009 in the Czech Republic. Genotype of the variety showed a significant influence on the contents of the TP, AA and TA. Purple- and red-fleshed varieties reached 2.7 to 3.8 times higher content of the TP in comparison with control yellow-fleshed variety, difference between them has a maximum of 16.8%. The highest AA content in the group of the varieties with colored pulp showed the Highland Burgundy Red variety (233 mg·kg⁻¹ FM), which with other two varieties matched the yellow-fleshed control, for other varieties a decrease of 18.5 to 28.0% was demonstrated. The TA content varied in a wide range from 68.7 to 573.5 mg cyanidin·kg⁻¹ FM and corresponded with the intensity and color range of light-marbled flesh of tubers of each variety.

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1 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Dvorak P.

1 Hamouz K.

1 Hejtmankova K.

1 Lachman J.

1 Vacek J.

1 2010

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Differences in the content of major antioxidants contained in potatoes with various coloured tuber flesh