Fig. 6From: De novo biosynthesis of p-coumaric acid and caffeic acid from carboxymethyl-cellulose by microbial co-culture strategyHPLC chromatogram of p-CA and caffeic acid. a Standards of p-CA and caffeic acid. b Co-culture sample of SK10-3 and NK-B2b; peak 1 was p-CA obtained from this co-culture system. c Co-culture sample of SK10-3 and NK-B2c; peak 2 was caffeic acid obtained from this co-culture systemBack to article page