Changes in equol and major soybean isoflavone contents during processing and storage of yogurts made from control or isoflavone-enriched bovine milk determined using LC-MS (TOF) analysis
Language English Country England, Great Britain Media print-electronic
Document type Journal Article
PubMed
28041561
DOI
10.1016/j.foodchem.2016.12.010
PII: S0308-8146(16)32012-X
Knihovny.cz E-resources
- Keywords
- Bovine milk, Daidzein (PubChem CID: 5281708), Dairy products, Equol, Equol (PubChem CID: 382975), Genistein (PubChem CID: 5280961), Glycitein (PubChem CID: 5317750), Isoflavones, Phytoestrogens, Storage,
- MeSH
- Chromatography, Liquid MeSH
- Equol analysis MeSH
- Glycine max chemistry MeSH
- Mass Spectrometry MeSH
- Isoflavones analysis MeSH
- Yogurt analysis MeSH
- Milk chemistry MeSH
- Cattle MeSH
- Animals MeSH
- Check Tag
- Cattle MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Names of Substances
- daidzein MeSH Browser
- Equol MeSH
- glycitein MeSH Browser
- Isoflavones MeSH
The effect of supplementing a basal diet for dairy cows with "Soybean extract 40" (Biomedica, Prague, Czech Republic), containing 40% soybean isoflavones, on the contents of daidzein, glycitein, genistein, and equol in milk as well as fresh and mature yogurts was estimated. To determine the contents of these isoflavonoids, an efficient analytical LC-MS (TOF) technique was used. The "Soybean extract 40" used in our study contained an especially high proportion of daidzein (307gkg-1). In both milk and yogurt samples, the amounts of daidzein and its metabolite equol were significantly higher in samples obtained from cows that received the isoflavone extract-supplemented diet than from those that received the basal diet, as the precursor daidzein contributed to the increased equol concentrations. Fermentation caused significant changes in the daidzein and glycitein concentrations. With maturation, the concentrations of daidzein and equol were unaffected, while the glycitein concentration decreased significantly.
References provided by Crossref.org
Production of Bovine Equol-Enriched Milk: A Review
Interaction of soy isoflavones and their main metabolites with hOATP2B1 transporter
