Figure 5.

ESR spectra of DMPO-OH with and without 1.4x10^-4 M lutein. Data were collected at 1 min (when solution reached the ESR chamber flow cell) and at 5 min after the addition of hydrogen peroxide. Lines shown are ESR spectra of controls at 1 min (red dots) and 5 min (blue dots), and with lutein after 1 min (black solid line) and 5 min (green solid line). After five min, more DMPO-OH is present in the control, and in the presence of lutein.