| This study evaluated the potential impacts of supplementation with betalain-rich extracts of foods on some
atherosclerotic risk factors in coronary artery disease patients. During an acute phase, 48 male patients
received about 50 mg betalain/betacyanin, and their blood and urine samples were collected at 3, 8, and
24 hours after supplementations. Also, in a pilot randomized crossover trial, these participants were allocated to two-week interventions (a betacyanin-rich supplement of Opuntia stricta, a betalain-rich supplement of red beetroot and a placebo) with two-week washout periods. Then, their plasma samples were
collected at the baseline after a two-week period. The concentrations of betanin in plasma and urine
samples were determined using HPLC. Also, homocysteine and glucose levels, lipid profile, and blood
pressure were analyzed. Additionally, quality of life and dietary intake were assessed. After these interventions, minimal amounts of betanin were found in plasma and about 0.13–0.93% in urine. Also, both supplements significantly decreased the concentration of homocysteine, glucose, total cholesterol, triglyceride,
and LDL. Also, betalain-rich supplements lowered both systolic and diastolic blood pressures. Nevertheless,
the clinically meaningful changes were only found in the case of Hcy, LDL, and non-HDL-c concentrations.
It seems that food sources of betalains can be considered as functional foods because they improve the
lipid profile and levels of homocysteine, glucose, blood pressure, and quality of life to some extent. |