Seasonal variation in contents of phytoestrogens in Danish dairy milk lines of different farm management systems

Natacha Roed Róin; Nina Aagaard Poulsen; Natalja Pustovalova Nørskov; Stig Purup; Lotte Bach Larsen

doi:10.1016/j.idairyj.2023.105694

Seasonal variation in contents of phytoestrogens in Danish dairy milk lines of different farm management systems

Natacha Roed Róin^*, Nina Aagaard Poulsen, Natalja Pustovalova Nørskov, Stig Purup, Lotte Bach Larsen

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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Abstract

Farm management systems and seasonal variation are suggested to affect the concentrations of phytoestrogens in milk. The present study analyses the concentrations of phytoestrogens and their relative composition in distinct milk lines from six Danish dairies representing three management systems (conventional, organic and biodynamic) in five sampling periods (P1–P5) over one year. A highly selective and sensitive liquid chromatography-triple quadrupole mass spectrometry method was applied to determine absolute concentrations of phytoestrogens in the different milk lines over the period. Biodynamic dairy milk lines contained higher levels of most isoflavones compared with milk from conventional systems. This may be explained by the differences in feeding strategies and, more specifically, botanical composition of feed. In relation to season, the concentration of the mammalian derived isoflavone, equol, was highest during the indoor period in biodynamic milk. Compared with the isoflavones, concentrations of lignans were less affected by farm management system.

Original language	English
Article number	105694
Journal	International Dairy Journal
Volume	144
Number of pages	8
ISSN	0958-6946
DOIs	https://doi.org/10.1016/j.idairyj.2023.105694
Publication status	Published - Sept 2023

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title = "Seasonal variation in contents of phytoestrogens in Danish dairy milk lines of different farm management systems",

abstract = "Farm management systems and seasonal variation are suggested to affect the concentrations of phytoestrogens in milk. The present study analyses the concentrations of phytoestrogens and their relative composition in distinct milk lines from six Danish dairies representing three management systems (conventional, organic and biodynamic) in five sampling periods (P1–P5) over one year. A highly selective and sensitive liquid chromatography-triple quadrupole mass spectrometry method was applied to determine absolute concentrations of phytoestrogens in the different milk lines over the period. Biodynamic dairy milk lines contained higher levels of most isoflavones compared with milk from conventional systems. This may be explained by the differences in feeding strategies and, more specifically, botanical composition of feed. In relation to season, the concentration of the mammalian derived isoflavone, equol, was highest during the indoor period in biodynamic milk. Compared with the isoflavones, concentrations of lignans were less affected by farm management system.",

author = "R{\'o}in, {Natacha Roed} and Poulsen, {Nina Aagaard} and N{\o}rskov, {Natalja Pustovalova} and Stig Purup and Larsen, {Lotte Bach}",

year = "2023",

month = sep,

doi = "10.1016/j.idairyj.2023.105694",

language = "English",

volume = "144",

journal = "International Dairy Journal",

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Seasonal variation in contents of phytoestrogens in Danish dairy milk lines of different farm management systems. / Róin, Natacha Roed; Poulsen, Nina Aagaard ; Nørskov, Natalja Pustovalova et al.
In: International Dairy Journal, Vol. 144, 105694, 09.2023.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Seasonal variation in contents of phytoestrogens in Danish dairy milk lines of different farm management systems

AU - Róin, Natacha Roed

AU - Poulsen, Nina Aagaard

AU - Nørskov, Natalja Pustovalova

AU - Purup, Stig

AU - Larsen, Lotte Bach

PY - 2023/9

Y1 - 2023/9

N2 - Farm management systems and seasonal variation are suggested to affect the concentrations of phytoestrogens in milk. The present study analyses the concentrations of phytoestrogens and their relative composition in distinct milk lines from six Danish dairies representing three management systems (conventional, organic and biodynamic) in five sampling periods (P1–P5) over one year. A highly selective and sensitive liquid chromatography-triple quadrupole mass spectrometry method was applied to determine absolute concentrations of phytoestrogens in the different milk lines over the period. Biodynamic dairy milk lines contained higher levels of most isoflavones compared with milk from conventional systems. This may be explained by the differences in feeding strategies and, more specifically, botanical composition of feed. In relation to season, the concentration of the mammalian derived isoflavone, equol, was highest during the indoor period in biodynamic milk. Compared with the isoflavones, concentrations of lignans were less affected by farm management system.

AB - Farm management systems and seasonal variation are suggested to affect the concentrations of phytoestrogens in milk. The present study analyses the concentrations of phytoestrogens and their relative composition in distinct milk lines from six Danish dairies representing three management systems (conventional, organic and biodynamic) in five sampling periods (P1–P5) over one year. A highly selective and sensitive liquid chromatography-triple quadrupole mass spectrometry method was applied to determine absolute concentrations of phytoestrogens in the different milk lines over the period. Biodynamic dairy milk lines contained higher levels of most isoflavones compared with milk from conventional systems. This may be explained by the differences in feeding strategies and, more specifically, botanical composition of feed. In relation to season, the concentration of the mammalian derived isoflavone, equol, was highest during the indoor period in biodynamic milk. Compared with the isoflavones, concentrations of lignans were less affected by farm management system.

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DO - 10.1016/j.idairyj.2023.105694

M3 - Journal article

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SN - 0958-6946

VL - 144

JO - International Dairy Journal

JF - International Dairy Journal

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Seasonal variation in contents of phytoestrogens in Danish dairy milk lines of different farm management systems

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