31 research outputs found
Desarrollo de un esquema de purificaci贸n para la hormona de crecimiento bovina producida por Pichia pastoris
Estudio de la acumulaci贸n de polifosfatos en microalgas floculantes nativas de Nuevo Le贸n para el desarrollo de tecnolog铆a alternativa para el reciclaje de f贸sforo.
Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium
Contamination by hexavalent chromium has had a large impact on modern society and human health. This problem is a consequence of its great industrial applicability to several products and processes. Short-term exposure to hexavalent chromium can cause irritation, ulceration in skin and stomach and in addition to cancer, dermatitis, and damage to liver, renal circulation and nervous tissues, with even death being observed in response to long-term exposures. Many techniques have been used for the remediation of this pollutant, including physical and chemical approaches and, in more recent years, biological methods. Filamentous fungi isolated from contaminated sites exhibit a significant tolerance to heavy metal; hence, they are an important source of microbiota capable of eliminating hexavalent chromium from the environment.
However, these microorganisms can do so in different
ways, including biosorption, bioreduction, and bioaccumulation, among others. In this review, we explore several of the most documented mechanisms that have been
described for fungi/hexavalent chromium interactions and
their potential use in bioremediation
Generaci贸n de electricidad a partir de una CCM de doble c谩mara utilizando Serratia marcescens como biocatalizador.
Bioestimulaci贸n de consorcios microbianos nativos de Nuevo Le贸n y su evaluaci贸n para la degradaci贸n de glifosato y coacumulaci贸n de polifosfato.
Phosphate-independent biodegradation of glyphosate by a native Bacillus cereus strain isolated from northeast Mexico.
Desarrollo de un medio de cultivo para la producci贸n de polihidroxialcanoatos (PHA) por Brevibacterium halotolerans.
Photoelectric evaluation of dye-sensitized solar cells based on prodigiosin pigment derived from Serratia marcescens 11E
Prodigiosin, a natural pigment produced as a secondary metabolite by the non-photosynthetic bacterium Serratia
marcescens, was tested as a sensitizer in dye-sensitized solar cells (DSSC). The strain S. marcescens 11E, which was
isolated from a natural spring located in the northeastern Mexican state of Nuevo Leon, was cultivated on peanut
oil broth 1% v/v, a culture medium which is known to enhance the production of prodigiosin. The resulting
pigment was extracted with chloroform and identified as prodigiosin based on the spectroscopic and structural
characteristics obtained by UV鈥揤is spectrophotometry along with FTIR and 1H NMR spectroscopies. The initial
absorbance decomposition test performed on the bacterial pigment demonstrated that prodigiosin exhibited high
photostability after five days, while the photovoltaic performance test of the sensitized DSSC, resulted in an open
voltage circuit of 560 mV, a current density of 0.096 mA/cm2, and efficiency of 0.032%. Structurally, the DSSC
consisted of a titanium dioxide (TiO2) photoanode sensitized with the pigment by direct adsorption, an electrolyte
containing a redox pair