Ai. Pavlov et al., Nutrient medium optimization for rosmarinic acid production by Lavandula vera MM cell suspension, BIOTECH PR, 16(4), 2000, pp. 668-670
The overall effect of NH4NO3, KNO3, and KH2PO4 on the biosynthesis of rosma
rinic acid and cell biomass by Lavandula vera MM cell suspension was studie
d by the method of the full factor experiment. Polynomial regression models
were elaborated to give a quantitative description of the processes of bio
synthesis of rosmarinic acid (Y-1) and cell biomass (Y-2) as a result of th
e variation of the concentration of NH4+, 0.09 g/L less than or equal to X-
1 less than or equal to 0.23 g/L; NO3-, 2.44 g/L less than or equal to X-2
less than or equal to 3.02 g/L; and KH2PO4, 0.170 less than or equal to X-3
less than or equal to 0.425 g/L. Optimization procedures according to the
modified Simplex method allowed us to establish the optimal conditions for
the biosynthesis of rosmarinic acid by Lavandula vera MM: X-1* = 0.09 g/L;
X-2* = 3.02 g/L, and X-3* = 0.170 g/L, where Y-1* max = 1786.74 mg/L (27 ti
mes higher compared with the cultivation in the standard Linsmayer-Skoog me
dium). As a result, modified ingredients of the Linsmayer-Skoog nutrient me
dium were applied for the cultivation of Lavandula vera MM to achieve a max
imum yield of rosmarinic acid.