Isoflavone concentration of soybean meal from various origins and transfer of isoflavones into milk of dairy cows

被引:0
作者
Gerhard Flachowsky
Martin Hünerberg
Ulrich Meyer
Dietmar R. Kammerer
Reinhold Carle
Miriam Goerke
Meike Eklund
机构
[1] Federal Research Institute for Animal Health,Institute of Animal Nutrition, Friedrich
[2] Institute of Food Science and Biotechnology,Loeffler
[3] Chair Plant Foodstuff Technology,Institut (FLI)
[4] University of Hohenheim,Institute of Animal Nutrition
[5] University of Hohenheim,undefined
来源
Journal für Verbraucherschutz und Lebensmittelsicherheit | 2011年 / 6卷
关键词
Isoflavones; Soybean meals; Origin; Dairy cows; Milk; Transfer;
D O I
暂无
中图分类号
学科分类号
摘要
The objective of this study was to determine the isoflavone concentration of defatted soybean meals from Argentina, Brazil and USA. Moreover, the transfer of isoflavones from soybean meal into the milk of dairy cows was investigated in a preliminary dose–response study. Six samples of soybean meal from each origin imported into the EU were taken at European harbours and subsequently analysed. The animal experiment was designed as a dose–response study with different amounts of soybean meal. For this purpose, eight lactating German Holstein cows were fed individually with a maize silage based diet containing 0, 10, 20 or 30% soybean meal for five periods over 21 days. At the end of each feeding period, the collected milk was analysed for isoflavones using HPLC–DAD–MS/MS methodology. The average total isoflavone concentrations in mg per kg dry matter in soybean meal were 1570 from Brazil, 1944 from the USA and 3075 from Argentina. Altogether, genistin was predominant with average proportions from 27% (USA) to 39% (Brazil). In milk, genistein was the most prominent phytoestrogen measured at concentrations from 58.9 to 89.8 μg/kg. Furthermore, traces of equol, enterolactone, formononetin and daidzein were detected, particularly, following soybean meal supplementation at high dosage. In conclusion, these results indicate an isoflavone transfer from feed into bovine milk.
引用
收藏
页码:449 / 456
页数:7
相关论文
共 171 条
[1]  
Andersen C(2009)Effect of forage on the content of phyto-oestrogens in bovine milk Animal 3 617-622
[2]  
Weisbjerg MR(2004)New data regarding phytoestrogens content in bovine milk Food Chem 87 275-281
[3]  
Hansen-Møller J(2000)Dietary intakes of flavonols, flavones and isoflavones by Japanese women and the inverse correlation between quercetin intake and plasma LDL cholesterol concentration J Nutr 130 2243-2250
[4]  
Sejrsen K(2002)Intake of dietary phytoestrogens by Dutch women J Nutr 132 1319-1328
[5]  
Antignac R(1998)Polyphenols: chemistry, dietary sources, metabolism, and nutritional significance Nutr Rev 56 317-333
[6]  
Cariou B(2005)Effect of temperature, elevated carbon dioxide, and drought during seed development on the isoflavone content of dwarf soybean (Glycine max (L.) Merrill) grown in controlled environments J Agric Food Chem 53 1125-1129
[7]  
Le Bizec B(2007)Sekundäre Pflanzenstoffe–Abwehrstoffe und Neutraceuticals? Der Praktische Tierarzt 88 828-836
[8]  
André F(1999)Effects of genetics and environment on isoflavone content of soybean from different regions of Brazil Pesquisa Agro Brasileira 34 1787-1795
[9]  
Arai Y(2009)Soy, phytoestrogens and metabolism: a review Mol Cell Endocrinol 304 30-42
[10]  
Watanabe S(2005)Correlations of oil and protein with isoflavone concentration in soybean ( J Agric Food Chem 53 7128-7135