Date Released: September 2015, slightly revised May 2016.
The USDA National Nutrient Database for Standard Reference (SR) is the major source of food composition data in the United States. It provides the foundation for most food composition databases in the public and private sectors. As information is updated, new versions of the database are released.
In FoodWorks 9, the USDA Release 28 (SR28) data source contains data on 8,790 food items, with 110 nutrients/components available for these foods, including Vitamin D2 and D3.
Citation: US Department of Agriculture, Agricultural Research Service, Nutrient Data Laboratory. USDA National Nutrient Database for Standard Reference, Release 28. Version Current: September 2015, slightly revised May 2016
ARTICLE LAST UPDATED: 9 October 2017