“In this work, … of 1 mM phenobarbital to cell cultures of Panax notoginseng at a relatively high inoculation size of 7.6 g dry cell weight (DW)/L enhanced the production of protopanaxatriol-type (Rg1 + Re) ginsenosides in both shake flask and airlift bioreactor (ALR, 1 L working volume).”