tailieunhanh - Comparison of composition (nutrients and other substances) of organically and conventionally produced foodstuffs: a systematic review of the available literature

There is currently no independent authoritative statement on the nature and importance of differences in content of nutrients and other nutritionally relevant substances (nutrients and other substances) in organically and conventionally produced foodstuffs. This systematic review of the available published literature was designed to seek to determine the size and relevance to health of any differences in content of nutrients and other substances in organically and conventionally produced crops and livestock products. This review does not address contaminant content (such as herbicide, pesticide and fungicide residues) of organically and conventionally produced foodstuffs or the environmental impacts of. | Comparison of composition nutrients and other substances of organically and conventionally produced foodstuffs a systematic review of the available literature Report for the Food Standards Agency Nutrition and Public Health Intervention Research Unit London School of Hygiene Tropical Medicine Contract number PAU221 Submission date July 2009 Review authors Dr. Alan Dangour lead Ms. Sakhi Dodhia Ms. Arabella Hayter Ms. Andrea Aikenhead Dr. Elizabeth Allen Dr. Karen Lock Professor Ricardo Uauy Nutrient content of organically and conventionally produced foodstuffs EXECUTIVE SUMMARY There is currently no independent authoritative statement on the nature and importance of differences in content of nutrients and other nutritionally relevant substances nutrients and other substances in organically and conventionally produced foodstuffs. This systematic review of the available published literature was designed to seek to determine the size and relevance to health of any differences in content of nutrients and other substances in organically and conventionally produced crops and livestock products. This review does not address contaminant content such as herbicide pesticide and fungicide residues of organically and conventionally produced foodstuffs or the environmental impacts of organic and conventional agricultural practices. The systematic review search process identified 162 relevant articles published with an English abstract in peer-reviewed journals since 1st January 1958 until 29th February 2008. A total of 3558 comparisons of content of nutrients and other substances in organically and conventionally produced foodstuffs were extracted for analysis. Articles included in the review were assessed for study quality satisfactory quality studies provided clear statements on material and nutrients analysed laboratory and statistical methods and a clear definition of organic agricultural practices and one third of all studies n 55 34 met the pre-defined satisfactory .