Abstract

MAS-DIEGO, Siannah Maria et al. Modelación de la formación de biomasa de Trichoderma harzianum Rifai (A-34) en fase sólida. RTQ [online]. 2019, vol.39, n.2, pp. 444-454. ISSN 2224-6185.

Trichoderma sp. is used in the ecologic protection of tomato, pepper, cucumber and other crops. An alternative for increasing the efficiency of biological systems is the use of magnetic treatment of cell cultures. In this work, the microbial kinetics under growth stimulation conditions by the action of the magnetic field on Trichoderma harzianum Rifai (A-34) in solid-state fermentation is reported. Microbial growth is described by a primary model. Two of the most applied and least complex models were compared using the OriginPro (OriginLab Inc.) version 9.4 (2017). For the statistical validation of the models, the residual values ​​were studied applying the Akaike Information Criterion (AIC), adjusted R2, χ2 (Chi-square), Minimum square of residues and Test of Fischer. The normality of the residues was checked using the Kolmogorov-Smirnov test. Coefficients describing Gompertz and Logistic models were obtained for the control experiment and the one with the fungus treated with magnetic fields in aerated solid fermentation at 30 °C. Logistic model adjusted the experimental data more adequately, so it is selected to describe biomass formation.

Keywords : Trichoderma harzianum; modeling; logistic model; solid-state fermentation.

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