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The ’Grey’ Literature

 Updated 2020-09-17

 What is ’grey’ literature?

The 'grey' literature is written and published material (such as analytical or survey reports) that may be difficult to trace via conventional channels such as published and peer reviewed journals It is usually not published commercially or may not be not widely accessible. It is nonetheless a very important source of information in food composition, because it is original and recent. Examples of grey literature include technical reports, e.g. technical reports from government agencies or scientific research groups, working papers from research groups or committees, etc.

The reports are usually written in the official laguage (languages) of the issuing organisations, and this may for non-English languages limit broad access to reports. Furthermore, the reports may be difficult to find as they are not necessarily covered by the commercial publishers and public search engines, like scientific literature.

As the analytical or survey reports are of extreme importance in food composition work, below is a collection of the most recent works by government agencies, research instititutes and laboratories. Most of the reports are available for download (marked by Download indication with hyperlink.). There are however a few reports mentioned below, for which it has not been possible to find a hyperlink. 

 More recent analytical or survey reports in food composition

The Netherlands
United Kingdom


The French Ciqual 2020 table is online

With 3,185 foods and 67 constituents, the 2020 version of the Ciqual table is available. See the ANSES-CIQUAL website.
First Anniversary release of USDA ARS FoodData Central

For more information, see USDA National Agricultural Library's Food and Nutrition Updates - May 2020.
Report Report on nutrient analysis of key cuts of British pork

Analytical survey on key cuts of pork sold in the UK commissioned by Agriculture and Horticultural Development Board (AHDB) and Public Health England (PHE). See Quadram Institute Bioscience’s Food Databanks National Capability website.
NEVO-Online 2019

New edition of Dutch food composition database NEVO-online: compositional data on more than 2150 food items - 2019. See NEVO website.