title: Determination of myriocin in natural and cultured Cordyceps cicadae using 9-fluorenylmethyl chloroformate derivatization and high-performance liquid chromatography with UV-detection.
abstract: A simple and sensitive reversed-phase liquid chromatographic method, based on the precolumn derivatization with 9-fluorenylmethyl chloroformate, was developed for the determination of myriocin. The derivatization reaction was performed in organic solvents of pyridine and tetrahydrofuran at 40 degrees C. Several factors influencing the derivative yield were investigated and optimized. The formed derivative was stable for more than 24 h at room temperature. The detection wavelength was 262 nm. The system offered the following analytical parameters: the limit of detection was 0.045 microg ml(-1), the linear correlation coefficient was 0.9963 and the linear range response was from 2.0 to 500.0 microg ml(-1). The precision of the method was <2.0%. As a preliminary application, the method has been successfully applied to the determination of myriocin in natural and cultured Cordyceps cicadae.
authors.affiliation: College of Bioengineering, Chongqing University, China. yjwlyw@163.com
authors.forename: Jiawen
authors.initials: J
authors.lastname: Yu
authors.forename: Hongjuan
authors.initials: H
authors.lastname: Xu
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Mo
authors.forename: Huali
authors.initials: H
authors.lastname: Zhu
authors.forename: Xianbing
authors.initials: X
authors.lastname: Mao
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D032661:Cordyceps / Q000737:chemistry* / Q000254:growth & development; D046508:Culture Techniques; D005229:Fatty Acids, Monounsaturated / Q000032:analysis*; D005449:Fluorenes / Q000737:chemistry*; D011786:Quality Control; D015203:Reproducibility of Results; D014466:Ultraviolet Rays
chemical_list: D005229:Fatty Acids, Monounsaturated; D005449:Fluorenes; C054007:1-(9-fluorenyl)methyl chloroformate; C001996:thermozymocidin