fig2

Figure 2. Chemical identity of C16:1 produced by Bifidobacterium sp. JCM 7042. (A) GC-MS chromatograms of DMOX-derivatized authentic standards (upper two panels) and TFA obtained from the JCM 7042 strain (bottom panel); (B) the spectrum of C16:1 obtained from the JCM 7042 strain is shown with the CID fragmentation pattern of 7-cis-hexadecenoic acid. The peaks of the fragments generated are indicated by “a” and “b”. CID: Collision-induced dissociation.