Fig 1. Detection of apiose in bacteria.
GC-MS analysis of alditol-acetate derivatives from methanolic, chloroform and cell pellet fractions of G. roseus (A) and X. pisi (B). Standard (Std) contains authentic xylose and apiose. The region of the total ion count for xylose (Xyl) and apiose (Api) alditol-acetate derivatives is expanded. (B) and (C) are MS fragmentation patterns for standard Xyl and Api, respectively. * indicates unidentified residue.