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Self-pasteurised substrate for growing oyster mushrooms (Pleurotus spp.)
Avendaño Hernández, Rubén ; Sánchez, José E. (coaut.) ;
Contenido en: African Journal of Microbiology Research Vol. 7, no. 3 (January, 2013), p. 220-226 ISSN: 1996-0808
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Resumen en inglés

As part of participatory research with farmers from the municipality of Cacahoatán, Chiapas, Mexico, an experiment was conducted to determine the technical feasibility of using substrate self-pasteurisation to grow oyster mushrooms (Pleurotus spp). In the first step, the substrate treatment (alkaline immersion disinfection versus self-heating pasteurisation) was evaluated, and after determining the better treatment, the productivity of 10 strains of four Pleurotus species, Pleurotus ostreatus (ECS-0152 and ECS-1123), P. eryngii (ECS-1290 and ECS-1138), P. citrinopileatus (ECS-1338 and ECS-01337) and P. djamor (ECS-0143, ECS-0142, ECS ECS-0144 and ECS-0149) was evaluated. Comparison of the substrate preparation treatments using P. ostreatus strain ECS-0152 showed significant differences in Biological Efficiency (BE) between alkaline immersion and self-heating pasteurisation, which had BE values of 57.6 and 78.6%, respectively (p = 0.001). The yield was compared in three levels of the substrate inside the crate used for self-heating pasteurisation, and no significant differences between the levels were found (p = 0.103). In the evaluated strains, five strains (ECS-0152, ECS-01123, ECS-1338, ECS-0142 and ECS-0149) produced mushrooms with BE values between 53.5 to 111.9%, whereas the other five strains did not produce mushrooms. The highest rate of production was observed in the strain ECS-1123. It can be concluded that the self-heating pasteurisation method is feasible at the field level, and furthermore, five strains of Pleurotus spp. that are able to be cultivated on substrate pasteurised in this way were identified.