Antioxidants & Phytonutrients

MedlinePlus: Antioxidants

DHHS. NIH. National Library of Medicine.

Provides a gateway to the latest news and information on the topic of antioxidants. Also offers links to research and related issues. Also in Spanish.


USDA Nutrient Database Lists for Antioxidant Nutrients and Phytonutrients (Vitamin E, Vitamin C, Beta-carotene, Lycopene, Lutein-Zeaxanthin, Selenium)

USDA. ARS. Nutrient Data Laboratory.

Find out the antioxidant content of foods, sorted either alphabetically by food description (select A) or in descending order by nutrient content (select C) in common household measures. Note: lists are PDF files.

  • Vitamin E (alpha-tocopherol) - A or C
  • Vitamin C - A or C
  • Beta-carotene - A or C
  • Lycopene - A or C
  • Lutein+zeaxanthin - A or C
  • Selenium - A or C

USDA Database for the Flavonoid Content of Selected Foods - Release 3 (2011)

USDA. ARS. Nutrient Data Laboratory.

Provides a table of the flavonoid content of over 200 foods and includes values for five subclasses of flavonoids - Flavonols, Flavones, Flavanones, Flavan-3-ols, and Anthocyanidins.


USDA Database for the Isoflavone Content of Selected Foods - Release 2.0 (2008)

USDA. ARS. Nutrient Data Laboratory.

Tables list foods alphabetically with the values of the specific isoflavones (daidzein, genistein, glycitein and total isoflavones) in the edible portion of the food. Database includes infant formulas.


Oxalic Acid Content of Selected Vegetables

USDA. ARS. Nutrient Data Laboratory.

Table of oxalic acid content of certain vegetables, originally published in Agriculture Handbook No. 8-11, Vegetables and Vegetable Products, 1984.


USDA ARS Phytochemical Database

USDA. ARS. Beltsville Agricultural Research Center.

Contains chemical structure, formula, molecular weight, synonyms, biological activities, and references on a large number of phytochemicals.


USDA Database for the Proanthocyanidin Content of Selected Foods - 2004

USDA. ARS. Nutrient Data Laboratory.

Contains proanthocyanidin content values for 205 food items.


National Cancer Institute logo Antioxidants and Cancer Prevention: Fact Sheet

DHHS. NIH. National Cancer Institute.

Find out more about antioxidants and their role in cancer prevention, including research study summaries.