Fig. 5From: Optimization of salicylic acid and chitosan treatment for bitter secoiridoid and xanthone glycosides production in shoot cultures of Swertia paniculata using response surface methodology and artificial neural networkPerformance data obtained (ANN) over entire training data and gradient loss for amarogentin (a, b); swertiamarin (c, d); mangiferin (e, f)Back to article page