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Concentrations of phytoestrogens in conventional, organic and free-range retail milk in England

Norskov, N. P., Givens, I., Purup, S. and Stergiadis, S. (2019) Concentrations of phytoestrogens in conventional, organic and free-range retail milk in England. Food Chemistry, 295. pp. 1-9. ISSN 0308-8146

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To link to this item DOI: 10.1016/j.foodchem.2019.05.081


The effect of dairy management system (conventional, CNV; organic, ORG; free-range, FRG) and month on retail milk phytoestrogen composition was assessed for 12 consecutive months. ORG milk contained more secoisolariciresinol, matairesinol, lariciresinol, sum of plant lignans, daidzein, genistein, formononetin, naringenin, equol, sum of isoflavones and coumestrol, than CNV and FRG milk. This may be explained by the higher supply of pasture, and grazed or ensiled clover, in ORG dairy diets. Seasonal variation in milk phytoestrogen concentrations was higher for ORG than CNV and FRG systems. Phytoestrogen composition did not vary between FRG and CNV milk. Consuming organic milk can increase intake of potentially beneficial lignans and isoflavonoids, and in particular equol; but, any effects on human health from such milk compositional differences cannot be implied.

Item Type:Article
Divisions:Life Sciences > School of Agriculture, Policy and Development > Department of Animal Sciences > Animal, Dairy and Food Chain Sciences (ADFCS)- DO NOT USE
ID Code:83615


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