title: [Study on the relation between ginkgolide B and water by FTIR].
abstract: The method of IR was used to study GB spectrum variety with different water ratio, and it was showed that GB IR spectrum only changed in the absorption strength at 3452, 1793, 1780 and 1630 cm(-1). The reason is that the water was concealed by GB cage skeleton and formed hydroxyl bond with GB hydroxyl groups, and the structure of GB remained unchanged and accorded with standardized GB. With the help of DSC and LC-MS, the subtle relations between GB and water were explained, GB is lipophilic and can not be dissolved by water, but in general, GB is easy to absorb the water of environment, and can be dehydrated under particular conditions.
authors.affiliation: Engineering Research Center of Bio-Process of Ministry of Education, Hefei University of Technology, Hefei 230069, China. ycx608@sohu.com
authors.forename: Chuan-xun
authors.initials: CX
authors.lastname: Yuan
authors.forename: Jian
authors.initials: J
authors.lastname: Pan
authors.forename: Xue-qiao
authors.initials: XQ
authors.lastname: Hu
authors.forename: Jing
authors.initials: J
authors.lastname: Xu
mesh_terms: D002152:Calorimetry, Differential Scanning; D046934:Ginkgolides / Q000032:analysis* / Q000737:chemistry; D007783:Lactones / Q000032:analysis* / Q000737:chemistry; D013058:Mass Spectrometry; D015394:Molecular Structure; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D014867:Water / Q000032:analysis*
chemical_list: D046934:Ginkgolides; D007783:Lactones; D014867:Water; C045856:ginkgolide B