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Journal of Genetic Engineering and Biotechnology
Fig. 3 | Journal of Genetic Engineering and Biotechnology

Fig. 3

From: An analysis of exo-polygalacturonase bioprocess in submerged and solid-state fermentation by Pleurotus ostreatus using pomelo peel powder as carbon source

Fig. 3

Production trends of exo-polygalacturonase titers, E (Ul−1) at a function of various levels of relative biomass production, ζ = X/Xmax in submerged (○) or solid-state fermentation (●) of P. ostreatus. Symbols correspond to the experimental data and solid line (−) correspond to the calculated values by the Luedeking and Piret model together with the logistic equation, broken lines (…) represent the best-fitted line for smf (y = 223610x3−303547x2 + 119806x−8605, R2 = 0.719) or ssf (y = 75729x3−105128x2 + 45194x−3905, R2 = 0.898) between the relative biomass and the enzyme titer

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