Fig. 2

GC–MS analysis of the extracted n-dodecane phase of shake-flask cultures of strain V02. a The GC–MS profiles of products produced by V02 strain and (+)-valencene standard. b Mass spectrum of (+)-valencene (peak 3). Peak 1 and peak 2 were identified as n-tridecane and n-tetradecane, which could be the contaminants from the used dissolvent n-dodecane. The GC–MS profiles of solvent control and the obtained MS–MS profiles of n-tridecane and n-tetradecane were included in the Additional file 1: Fig. S2