title: Determination of chemical changes in Isatis indigotica seeds carried after Chinese first spaceship with FTIR and 2D-IR correlation spectroscopy.
abstract: Spaceflight represents a complex environmental condition. Space mutagenesis breeding has achieved and marked certain results over the years. This method was employed in our previous studies in order to obtain improved germplasm of Isatis indigotica. This study is to determine the chemical changes in I. indigotica seeds carried after Chinese first spaceship (Shenzhou I). Fourier transform infrared (FTIR), second derivative and two-dimensional infrared (2DIR) correlation spectroscopy were used in analysis. Not much differences between the two spectra were found except the peaks in the range of 1500-1200 cm(-)(1) which was about 7 cm(-)(1) different and indicated the absorption could be initialed from different bonds. SP4 showed different derivative compared with C4 in the second derivative spectra of 1200-800 cm(-)(1). The stronger signal of 2DIR in SP4 indicated the protein content of the seed was changed after spaceflight. It is concluded that spaceflight provided an extreme condition that caused changes of chemical properties in I. indigotica.
authors: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, PR China.
authors: Xiangdong
authors: X
authors: Chen
authors: Phytochemistry Unit, Herbal Medicine Research Centre, Institute for Medical Research, 50588 Kuala Lumpur, Malaysia.
authors: Choong Yew
authors: CY
authors: Keong
authors: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, PR China.
authors: Xiling
authors: X
authors: Mei
authors: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, PR China. Electronic address: lanjin60@163.com.
authors: Jin
authors: J
authors: Lan
mesh_terms: D002681:China; D031219:Isatis / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D013026:Space Flight; D017550:Spectroscopy, Fourier Transform Infrared
keywords: Chemical changes; Fourier-transform infrared spectroscopy; Isatis indigotica; Spaceflight; Two-dimensional infrared correlation