Lipophilic and hydrophilic antioxidant capacities of common foods in the United States

Xianli Wu, Gary R Beecher, Joanne M Holden, David B Haytowitz, Susan E Gebhardt, Ronald L Prior
J Agric Food Chem . 2004 Jun 16;52(12):4026-37.

Both lipophilic and hydrophilic antioxidant capacities were determined using the oxygen radical absorbance capacity (ORAC(FL)) assay with fluorescein as the fluorescent probe and 2,2′-azobis(2-amidinopropane) dihydrochloride as a peroxyl radical generator on over 100 different kinds of foods, including fruits, vegetables, nuts, dried fruits, spices, cereals, infant, and other foods. Most of the foods were collected from four different regions and during two different seasons in U.S. markets. Total phenolics of each sample were also measured using the Folin-Ciocalteu reagent. Hydrophilic ORAC(FL) values (H-ORAC(FL)) ranged from 0.87 to 2641 micromol of Trolox equivalents (TE)/g among all of the foods, whereas lipophilic ORAC(FL) values (L-ORAC(FL)) ranged from 0.07 to 1611 micromol of TE/g. Generally, L-ORAC(FL) values were <10% of the H-ORAC(FL) values except for a very few samples. Total antioxidant capacity was calculated by combining L-ORAC(FL) and H-ORAC(FL). Differences of ORAC(FL) values in fruits and vegetables from different seasons and regions were relatively large for some foods but could not be analyzed in detail because of the sampling scheme. Two different processing methods, cooking and peeling, were used on selected foods to evaluate the impact of processing on ORAC(FL). The data demonstrated that processing can have significant effects on ORAC(FL). Considering all of the foods analyzed, the relationship between TP and H-ORAC(FL) showed a very weak correlation. Total hydrophilic and lipophilic antioxidant capacity intakes were calculated to be 5558 and 166 micromol of TE/day, respectively, on the basis of data from the USDA Continuing Survey of Food Intakes by Individuals (1994-1996).

Latest Antioxidant Activity

Phenolic compounds of blueberries ( Vaccinium spp) as a protective strategy against skin cell damage induced by ROS: A review of antioxidant potential and antiproliferative capacity

Daniela A Maya-Cano, Sandra Arango-Varela, Gloria A Santa-Gonzalez
Heliyon. 2021 Feb 17;7(2):e06297.
Read More

Molecular Mechanism and Health Role of Functional Ingredients in Blueberry for Chronic Disease in Human Beings

Luyao Ma, Zhenghai Sun, Yawen Zeng, Mingcan Luo, Jiazhen Yang
Int J Mol Sci . 2018 Sep 16;19(9):2785. doi: 10.3390/ijms19092785.
Read More

Blueberry supplementation attenuates oxidative stress within monocytes and modulates immune cell levels in adults with metabolic syndrome: a randomized, double-blind, placebo-controlled trial

Anand R Nair, Nithya Mariappan, April J Stull, Joseph Francis
Food Funct . 2017 Nov 15;8(11):4118-4128.
Read More