Production of the Functional Egg to Strengthen Isoflavone : Improvement of Transfer Efficiency of Genistein into the Egg Yolk
2006
Hwangbo, J. (National Livestock Research Institute, RDA, Suwon, Republic of Korea) | Lee, B.S. (National Livestock Research Institute, RDA, Suwon, Republic of Korea) | Lee, H.J. (National Livestock Research Institute, RDA, Suwon, Republic of Korea) | Chung, W.T. (National Livestock Research Institute, RDA, Suwon, Republic of Korea) | Cho, S.B. (National Livestock Research Institute, RDA, Suwon, Republic of Korea) | Hong, E.C. (National Livestock Research Institute, RDA, Suwon, Republic of Korea) | Bae, H.D. (National Livestock Research Institute, RDA, Suwon, Republic of Korea) | Chang, J.S. (Korea National Open University, Seoul, Republic of Korea), E-mail: [email protected]
This study was carried out to determine whether genistein implants in laying hens could be transferred into their eggs. 250 mg genistein pellet was implanted two or four subcutaneously in the neck of laying hens. The contents of genistein in egg yolk transferred were analyzed with HPLC-MS. In 500 mg genistein pellets, it was detected as 395 ng/egg yolk on the day 18 after implanting and maintained as 546 ng/egg yolk after the day 59. In 1,000 mg, genistein was detected as 240 ng/egg yolk on the day 13, as 514 ng/egg yolk on the day 30 and maintained over 59 days.
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