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Table 3 Cost comparison of our medium and reported medium

From: Optimization of an economical medium composition for the coculture of Clostridium butyricum and Bacillus coagulans

Input Price Reported MediumQ Newly designed medium
(USD/Kga) (g/Lb) (USD/Lc) (g/L) (USD/L)
Glucose 249 2.44 0.608
Yeast extract 224 2.08 0.466
Tryptone 448 1 0.045
(NH4)2SO4 175 0.1 0.018
NaHCO3 142 0.1 0.014
MnSO4·H2O 151 0.02 0.003 0.5 0.0755
MgSO4·7H2O 75 0.02 0.0015
CaCl2 161 0.002 0.0003
Bran 0.255   10 0.00255
Corn steep powder 0.413   15 0.006195
Peptone 0.295   15 0.004425
K2HPO4 320   1 0.32
Total (USD/L) 1.1558 0.40867
  1. Q: Formula reported by Qing Kong et al
  2. aCost of each component was calculated based on Sigma-Aldrich prices (accessed on December 2020)
  3. bAmount of component (g) per liter of medium
  4. cCost of component per liter of medium