Transfer of soy isoflavone into the egg yolk of chickens
| Autor: | Hiroshi Harada, Sanshiroh Saitoh, Toshiro Sato, Toshichika Takita |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
food.ingredient
Animal feed Genistein Biology Applied Microbiology and Biotechnology Biochemistry Gas Chromatography-Mass Spectrometry Analytical Chemistry chemistry.chemical_compound Isoflavone Derivatives food Yolk Animals Food science Molecular Biology SOY ISOFLAVONES Cholesterol Organic Chemistry General Medicine Isoflavones Animal Feed Egg Yolk chemistry embryonic structures Female Soybeans Chickens Biotechnology |
| Zdroj: | Bioscience, biotechnology, and biochemistry. 65(10) |
| ISSN: | 0916-8451 |
| Popis: | A diet containing a high concentration of soy isoflavone was administered to laying hens and the contents of the isoflavones transferred to the plasma and egg yolk were measured. A method for quantitatively measuring the concentration of isoflavone in the yolk was first established, before a high concentration of soy isoflavone was administered to the laying hens over an 18-day period. The concentrations of isoflavone in the plasma and egg yolk reached their highest on the 12th day of the feeding period, the values being 3,167 nmol/l and 65.29 microg/100 g, respectively. The concentration of cholesterol in the yolk was slightly affected during the early stages of the feeding period. These findings clearly demonstrate that soy isoflavone was transferred into the yolk from the feed and that the cholesterol concentration in the yolk was affected by administering the soy isoflavone-enriched feed. |
| Databáze: | OpenAIRE |
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