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artículo
It was determined whether Trichoderma harzianum was capable of degrading the insecticide alphacipermethrin. T. harzianum was seeded in Papa Dextrose Agar and incubated for 7 days, then petri dishes were prepared with minimal gar of salts containing concentrations of 0, 75, 100 and 150 ppm of alphacipermethrin respectively, in which were seeded mycelium of the fungus was incubated at 25 °C for 3 days, radial growth being evaluated daily. The degradation of alphacipermethrin in broth was also evaluated for which 8 mL of a suspension of 106 spores / mL of T. harzianum were inoculated into flasks containing minimal broth of salts with 0, 75, 100 and 150 ppm of alpha- 10 days. The broth was then filtered and the obtained mycelium was oven dried and weighed. The broth remaining after the filtrate was analyzed by thin layer chromatography to detect whether there was or was no presence of alpha...
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artículo
The adsorption capacity of copper ion and lead acid by Trichoderma asperellum was determined from ideal solutions of copper and lead (II) sulphate, respectively. Fungal biomass was obtained by cultivating T. viride FP-UNT 01 in aerated bioreactors with potato dextrose serum, which was washed with 0.1N nitric acid (HNO3); The pellets formed were oven dried at 60 ° C for 24 hours. 8g of pellets were placed in a four column system through which a solution of cupric ion at 19ppm and of lead acid at 40ppm concentration respectively was passed. The samples were analyzed by mass spectrometry and the data obtained were analyzed using the Student’s t-test for paired samples. It was found that T. asperellum is capable of adsorbing cupric ion up to 9.1% and plumbous ion up to 24.3% for 6 hours of evaluation. It was concluded that T. asperellum is able to adsorb plumbous ion and cupric ion, being...