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Revista Colombiana de Biotecnología
versão impressa ISSN 0123-3475
Resumo
HERNANDEZ-ROSAS, Julio César e SANCHEZ MERAZ, José Alfredo. Evaluation of in vitro cultivation of a Mexican strain of Ganoderma lucidum. Rev. colomb. biotecnol [online]. 2021, vol.23, n.2, pp.36-40. Epub 17-Fev-2022. ISSN 0123-3475.
The Mexican strain CP-145 of Ganoderma lucidum due to the medicinal importance it has presented lately, the present investigation had as objective to evaluate the effect of temperature and culture medium on the optimal mycelial growth in different pH ranges. The treatments corresponded to the use of potato dextrose agar (PDA) and malt extract agar (EMA), with two temperature levels (25 and 28 °C) and six pH ranges (4.0, 4.5, 5.0, 5.5, 5.5, 6.0 and 6.5). The experimental design was completely randomised with repeated measures over time, analysed with the REPEATED MEASURE package and the time effect with PROC MIXED of SAS. As a result, the effect of temperature and culture media in the different pH ranges showed significant differences (P ≤ 0.05). The optimal mycelial growth of the Mexican strain of G. lucidum was in the EMA culture medium in the pH ranges of 4.0 and 4.5 with 8.3 and 8.2 cm respectively. Similarly, in the pH ranges 4.0 and 4.5 the optimum mycelial growth was obtained at 25 °C with 8.1 and 8.0 cm respectively. This research concluded that the optimal mycelial growth of the Mexican strain was at pH 4.0 and 4.5, temperature of 25 °C and EMA culture medium.
Palavras-chave : mycelial growth; culture medium; temperature.