Research on bitter components from Coptis chinensis based on electronic tongue Bioactive Constituents from Twigs and Leaves of Kopsia hainanensis Antibacterial components from artificially induced dragon‘s blood of Dracaena cambodiana Cloning the genes of Pseudomonas chlororaphis YL-1 dedicated to antibacterial activities against microbial phytopathogens In vitro Antibacterial Activities Extracts from Four Plants Used as Traditional Chinese Medicine Guanzhong Chemical Constituents of the Volatile Oil of Parakmeria lotungensis Flower and Its Antibacterial Activities in vitro