1. Betalains: Properties, sources, applications, and stability - a review;Azeredo;International Journal of Food Science and Technology,2009
2. Influence of industrial and alternative farming systems on contents of sugars, organic acids, total phenolic content, and the antioxidant activity of red beet (Beta vulgaris L. ssp. vulgaris Rote Kugel);Bavec;Journal of Agricultural and Food Chemistry,2010
3. The ferric reducing ability of plasma (FRAP) as a measure of “antioxidant power”: The FRAP assay;Benzie;Analytical Biochemistry,1996
4. Use of a free radical method to evaluate antioxidant activity;Brand-Williams;Lebensmittel-Wissenschaft und -Technologie- Food Science and Technology,1995
5. Organic agriculture: Does it enhance or reduce the nutritional value of plant foods?;Brandt;Journal of the Science of Food and Agriculture,2001