Fig. 4From: Construction of Escherichia coli cell factories for crocin biosynthesisThe analysis of the fermentation products of strain. YL4(pCsCCD2UGT94E5UGT75L6,pTrcALD8,pET28a-YjiC-YdhE-YojK). Crocin-5 (tR = 22.10 min, m/z = 491.22) was detected in the extract after 72 h of cultivation by HPLC and LC–ESI–MSBack to article page