with a high performance liquid chromatograph (HPLC, Shimadzu LC-10AD) and Shim-Pack SCR-102H column. The analytical procedure was described in detail by Kimura et al. (1994). Statistical analyses were performed using SAS version 9.2
with a high performance liquid chromatograph (HPLC, Shimadzu LC-10AD) and Shim-Pack SCR-102H column. The analytical procedure was described in detail by Kimura et al. (1994). Statistical analyses were performed using SAS version 9.2