PHOTO-ALTERATION OF ISOVALINE AND ITS PRECURSOR 5-ETHYL-5-METHYLHYDANTOIN EXPOSED TO UV AND γ-RAY RADIATION

5-ETHYL-5-METHYLHYDANTOIN EXPOSED TO UV AND γ-RAY RADIATION Palash K. Sarker, Jun-ichi Takahashi, Yumiko Obayashi, Takeo Kaneko and Kensei Kobayashi Department of Chemistry and Biotechnology, Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan NTT Microsystem Integration Laboratories, 3-1 Morinosato Wakamiya, Atsugi 243-0198, Japan Fax: +81-45-339-3938, sarker-palash-nd@ynu.ac.jp (Received February 6, 2012; Accepted June 22, 2012)