Qualitative and quantitative analysis of bioactive principles in Zingiberis Rhizoma by means of high performance liquid chromatography and gas liquid chromatography. On the evaluation of Zingiberis Rhizoma and chemical change of constituents during Zingiberis Rhizoma processing - Yoshikawa,M.; Hatakeyama,S.; Chatani,N.; Nishino,Y.; Yamahara,J. (Yakugaku Zasshi, 1993)