β-Glucosidase is part of the cellulases and responsible for degrading cellobiose into glucose, a compound that can be used to produce biofuels. However, use free enzyme makes process more expensive. Enzyme immobilization improves catalytic characteristics supports, such as zeolites, which have physical-chemical ion exchange capacity promising application in biotechnological industry. This research aimed immobilize by adsorption recombinant β-glucosidase from

La agricultura en México ha sobrepasado el uso racional de insecticidas químicos, impactando con ello la estructura del suelo y ecosistema agrícola general. Una alternativa control plagas es plantas tóxicas, las cuales proporcionan sustancias químicas que modifican comportamiento los insectos. El objetivo esta investigación fue evaluar eficacia un insecticida biorracional generado Datura metel Linneo aplicado sobre poblaciones adultos gusano raíz maíz Diabrotica undecimpunctata Howardi...

In this work, 15 plants are listed, which considered to have toxic effects in different areas of Durango. addition, their main characteristics, distribution, properties and uses described. Most cause problems human health such as: irritations, burns, vomiting, diarrhea some extreme cases these can death if we exceed the dose. On other hand, qualities be used benefit environment, by extracting secondary metabolites using them control pests, whether for forestry or agricultural insects, thus...

Molecular dynamics (MD) techniques offer significant potential for optimizing mineral extraction processes by simulating economically or physically restrictive conditions at the laboratory level. Lithium, a crucial metal in electromobility era, exemplifies need ongoing re-evaluation of techniques. This research aims to simulate crystal structures species present polylithionite concentrate [KLi

The aim of this research was to evaluate bioleaching Mn, As, Pb and Zn from mining tailings using two different sets variable processing conditions.In the first set pH (2.0, 4.0 6.0), concentrations (10, 20 y 30 %, w/v [111.11,250.00 428.57g/L, respectively]), types culture medium (9K [with nitrogen source] nonN (nitrogen-free medium) were evaluated; in second evaluation focused on continuous supplementation biogenic H2SO4 oxidized with nonN) at media previously described by native strains...

Sulphur plays a fundamental role in the biological processes of chemolithotrophic microorganisms. Due to redox characteristics sulphur, microorganisms use it for metabolic processes. Such is case dissimilatory anaerobic respiration reducing The production electrical energy from metabolism native using sulphur as substrate inorganic mineral sources form Galena (PbS) was achieved MR medium with 15% (w/v) PbS concentrate. At 400 h growth, highest voltage produced an experimental unit under...

During the silver extraction process in mining, generated residues (called tailings) still contain approximately 100-140 g/ton of due to presence refractory materials that trap this metal and prevent its solubilization by conventional methods. These can be treated biohydrometallurgical processes allowing, together with cyanidation process, an increase efficiency eliminating such as manganese, which is present pyrolusite (MnO2, 3.78 %). Pyrolusite change from manganese (IV) (II) when...

The β-glucosidase from almond was immobilized using different strategies: ionic adsorption on aminated (MANAE)-agarose beads at pH 5, 7 and 9, followed by glutaraldehyde pre-activated supports. of the immobilization altered to allow enzyme molecule orientations support surface. concentration exhibited an effect stability free enzyme. Immobilization ion exchange maintained up 80% activity β-glucosidase, however stabilization lower than covalent binding supports 5 showed a higher 78% after 24...

La nanotecnología es considerada como la revolución industrial del siglo XXI, por esto obtención y aplicación de nanopartículas (NPs) vital interés para muchos rubros ciencia e industria. El uso las NPs-Fe3O4 obtenidas síntesis verde se extiende desde cosmética, medicina, remediación ambiental, eléctrica electrónica, debido a sus características térmicas, ópticas magnéticas, sin mencionar el bajo costo producción. En esta revisión analizan los factores con mayor efecto durante lo son pH,...

Biohydrometallurgy has been defined as a collection of techniques that involve the use microbial metabolisms, such bacterium Acidithiobacillus thiooxidans, for extraction metals. Therefore, in current study, we tested potential pure culture A. Thiooxidans removal zinc and iron from galvanized waste automotive industry. Starkey medium was employed added 0.5% w/v solid sample, incubation took place at 30°C, 180 rpm 7 days. The experiment showed biological 100% Fe Zn after 72 hours, shown with...

The bioleaching of manganese present in mining waste after metal extraction can be catalyzed by Leptospirillum (L.) ferriphilum allowing atmospheric carbon dioxide to used this autotrophic process and generating the subsequent recovery silver. Bioleaching metals is widely performed agitated tanks; therefore, it important assess mass transfer capacity gaseous substrates, such as dioxide, during microbial processes. main objective research was evaluate effects presence concentration a vector...