Benders'dictionary of nutrition and food technology

A note on food compositionThis book contains nutrient composition data for 340 foods, fromthe US Department of Agriculture National Nutrient Databasefor Standard Reference, Release 17, which is freely availablefrom the USDA Nutrient Data Laboratory website: http://www.nal.usda.gov/fnic/foodcomp/.In addition to the nutrient content per 100 g, we have calculatednutrient yields per serving, and shown the information as a notethat a specified serving is a source, good source or rich source ofvarious nutrients. A rich source means that the serving providesmore than 30%, a good source 20–30%, and a source 10–20% ofthe recommended daily amount of that nutrient (based on the EUnutrition labelling figures shown in Table 2 of the Appendix).Any specified food will differ in composition from one variety toanother, and from sample to sample of the same variety, dependingon the conditions under which the animal was raised or theplant grown, so that the values quoted here should not be consideredto be accurate to better than about ±10%, at best; the variationin micronutrient content may be even greater.