Effect of phenolic compounds extracted from sunflower seeds on native lipoxygenase activity

Extracts of lipoxygenase were obtained from sunflower seeds using 12 different extraction mixtures, and lipoxygenase activity and content of phenolic compounds in the extracts were determined. The content of phenolic compounds was determined as the ratio of optical densities at 320/280nm. Statistical analysis of the results for the extracts showed a significant correlation between the lipoxygenase activity and the OD 320nm /OD 280nm ratio with r = 0.619. However, after dialysis of the extracts, no correlation was found.