Characteristics of Components and Contents of Organic Acid in Pear Fruits from Different Cultivated Species Characteristics of Components and Contents of Organic Acid in Pear Fruits from Different Cultivated Species Simultaneous Determination of Five Catechins in Green Tea using High Performance Liquid Chromatography Comparison of Carotenoids Content in Different Turfgrass Species Determination of Sulforaphane by High Performance Liquid Chromato- graphy and Genetic Analysis of DH Population in Broccoli Florets Comparison of content of curdione, curcumol, germacrone and β-elemene in different varieties of vinegar backed Rhizoma Curcuma ILs-HPLC simultanesous determination of five alkaloids in Phellodenddri Chinensis Cortex