FYI: USDA nutritional database release 24. Free.

Free on-line searchable or downloadable database for foods of almost all
kinds.

http://www.ars.usda.gov/Services/docs.htm?docid=8964

PC download available only.

The USDA National Nutrient Database for Standard Reference can also be
downloaded separately for your custom application. Visit:

http://www.ars.usda.gov/Services/docs.htm?docid=8964

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