Affordable Access

Publisher Website

A pecan-enriched diet increasesγ-tocopherol/cholesterol and decreases thiobarbituric acid reactive substances in plasma of adults

Authors
Journal
Nutrition Research
0271-5317
Publisher
Elsevier
Publication Date
Volume
26
Issue
8
Identifiers
DOI: 10.1016/j.nutres.2006.06.022
Keywords
  • Pecans
  • Humans
  • α-Tocopherol
  • γ-Tocopherol
  • Tbars
  • Frap
  • Teac
Disciplines
  • Medicine

Abstract

Abstract Consumption of nuts is associated with a reduced risk of coronary heart disease, and dietary intervention studies incorporating pecans show improved lipid profiles. The unsaturated fats in pecans are protected against oxidation by the high concentrations of γ-tocopherol and polymeric flavanols. The aim of this study was to determine whether plasma concentrations of tocopherols and measures of antioxidant capacity and of oxidative stress are affected by incorporation of pecans in the diet. In a randomized, controlled, crossover feeding study, 24 subjects were assigned to 2 diets, each for 4 weeks: a control diet and a pecan-enriched (20% of energy) diet. Cholesterol-adjusted plasma γ-tocopherol increased by 10.1% ( P < .001), α-tocopherol decreased by 4.6% ( P < .001), and malondialdehyde concentrations measured as thiobarbituric acid reactive substances decreased by 7.4% ( P < .05) on the pecan diet. No changes were observed for ferric-reducing ability of plasma or Trolox equivalent antioxidant capacity values. These data provide some evidence for potential protective effects of pecan consumption in healthy individuals.

There are no comments yet on this publication. Be the first to share your thoughts.