Fig 1.
Growth curves of the fresh and dry weights of suspension-cultured calluses during the whole culturing period.
Table 1.
Mathematical modeling results of the growth curves of the fresh weight and dry weight of suspension-cultured calluses.
Fig 2.
Growth kinetic curves of fresh and dry weights of suspension-cultured calluses.
Fig 3.
Function graphs of the first derivative and the second derivative of the Logistic model.
Fig 4.
HPLC chromatograms of various constituents.
a. Test samples. b. Reference substances. c. The filtrate of suspension-cultured calluses of Bletilla striata. d. Blank solution (70% methanol). 1. p-Hydroxybenzyl alcohol. 2. Dactylorhin A. 3. Militarine. 4. Coelonin.
Fig 5.
Content change and fitting curves of four secondary metabolites.
a. p-Hydroxybenzyl alcohol. b. Dactylorhin A. c. Militarine. d. Coelonin.
Table 2.
Mathematical model fitting results of the contents of four secondary metabolites.