|Hale, Anna - DEPT HORT A&M UNIV TEXAS|
|Cisneros-Zevallos, Luis - DEPT HORT A&M UNIV TEXAS|
|Miller Jr, J Creighton - DEPT HORT A&M UNIV TEXAS|
Submitted to: American Journal of Potato Research
Publication Type: Abstract Only
Publication Acceptance Date: March 19, 2001
Publication Date: N/A
Technical Abstract: Some 25 varieties, 69 advanced selections, and 30 accessions were screened for total antioxidant activity. Antioxidants were extracted and allowed to react with the stable radical, 2,2,-Diphenyl-1-picrylhydrazyl (DPPH). This provided an easy and rapid evaluation of the antiradical activities of the potato extracts based on absorbance. Purple Peruvian, TXNS112, All Blue, ATX9312-1Ru, CORN8, ATX96007-1P/Y, Russet Norkotah, and TXNS296 were identified as significantly higher in total antioxidant activity. Significant differences were found between Russet Norkotah and its strains. In the subsequent screen, several wild relatives of potato were determined to be high in total antioxidant activity. The highest of these was a bulked sample of S. pinnatisectum. Of the varieties and advanced selections, NDC4069 and All Blue ranked highest. This variability is evidence for genetic control of antioxidant capacity and provides the opportunity to breed new potato varieties with increased human health benefits.