Simultaneous determination of sixteen ginsenosides in Panax ginseng and its preparation by HPLC Extracting technology optimization of polysaccharides from Panax ginseng by orthogonal test Application of nested PCR and direct sequencing to discover single nucleotide polymorphisms in cDNA sequence of dammaranediol synthase gene of Panax ginseng Reflection on implementation of patent strategy for ginseng industry in China Extracting technology optimization of polysaccharides from Panax ginsengby orthogonal test Research progress on ginseng proteins