ENHANCED SILYMARIN ACCUMULATION AS INFLUENCE OF MEDIUM COMPOSITION IN CELL SUSPENSION CULTURES OF Silybum marianum (L.) GAERTN.

Document Type : Original Article

Authors

Agric. Botany Dept., Fac. of Agric., Ain Shams Univ., Shoubra El-Keima, Cairo, Egypt.

Abstract

Silymarin production was examined in cell suspension cultures derived from hypocotyl of Silybum marianum (L.) Gaertn. MS medium supplemented with different concentrations of sucrose, glucose, KH2PO4, KH2PO4 + K2SO4, NH4NO3, CaCl2, L-Phenylalanine, L-Tyrosine and yeast extract was used. Tyrosine 10 mg/l,  0.5 KH2PO4 + K2SO4 con., 0.75 NH4NO3 con., 0.75 KH2PO4 + K2SO4 con., glucose 30 g/l, 0.5 CaCl2.2H2O, tyrosine 20 mg/l and yeast extract 40 mg/l (3 days incubation period) showed the highest production of silymarin in callus cells to reach 79%, 57.5%, 46%, 24.2%, 21.2%, 19.7%, 9.7% and 8.6% over the control respectively. The same trend was obtained by HPLC (qualitative assay).

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