英国常规、有机和散养零售牛奶中植物雌激素的浓度。

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

机构信息

Aarhus University, Department of Animal Science, AU-Foulum, Blichers Alle 20, P.O. Box 50, DK-8830 Tjele, Denmark.

University of Reading, Institute for Food Nutrition and Health, Agriculture Building, P.O. Box 237, Earley Gate, Reading RG6 6AR, United Kingdom.

出版信息

Food Chem. 2019 Oct 15;295:1-9. doi: 10.1016/j.foodchem.2019.05.081. Epub 2019 May 10.

DOI:10.1016/j.foodchem.2019.05.081

PMID:31174736

Abstract

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.

摘要

本研究连续 12 个月评估了牛奶的乳牛管理系统（常规 CNV、有机 ORG、自由放养 FRG）和月份对零售牛奶植物雌激素组成的影响。ORG 牛奶中含有更多的开环异落叶松脂素、马松脂素、落叶松脂素、植物木脂素总和、大豆苷元、染料木黄酮、芒柄花素、柚皮苷、雌马酚、异黄酮总和和香豆雌酚，高于 CNV 和 FRG 牛奶。这可能是由于 ORG 奶牛饲料中提供了更高的牧草、放牧或青贮三叶草。ORG 系统的牛奶植物雌激素浓度季节性变化高于 CNV 和 FRG 系统。FRG 和 CNV 牛奶之间的植物雌激素组成没有差异。食用有机牛奶可以增加潜在有益的木脂素和异黄酮的摄入量，特别是雌马酚；但是，不能从这种牛奶成分差异推断对人类健康的任何影响。