(A) Schematic representation of in vivo glycosylation of phloretin using YjiC in E. coli BL21(DE3) Δpgi Δzwf ΔushA. P, phosphate. (B) In vivo production of P1, P2, P3, and P5 by E. coli BL21(DE3) Δpgi Δzwf ΔushA/pET28-YjiC supplemented with 500 μg/ml of phloretin. mg/L, mg/liter. Error bars show standard deviations.