• Início
  • Resultados da busca
  • Metabolic reengineering invoked by microbial systems to decontaminate aluminum: implications for bioremediation technologies.

Metabolic reengineering invoked by microbial systems to decontaminate aluminum: implications for bioremediation technologies.

Biotechnology advances (2012-12-04)
Christopher Auger, Sungwon Han, Varun P Appanna, Sean C Thomas, Gerardo Ulibarri, Vasu D Appanna
RESUMO

As our reliance on aluminum (Al) increases, so too does its presence in the environment and living systems. Although generally recognized as safe, its interactions with most living systems have been nefarious. This review presents an overview of the noxious effects of Al and how a subset of microbes can rework their metabolic pathways in order to survive an Al-contaminated environment. For instance, in order to expulse the metal as an insoluble precipitate, Pseudomonas fluorescens shuttles metabolites toward the production of organic acids and lipids that play key roles in chelating, immobilizing and exuding Al. Further, the reconfiguration of metabolic modules enables the microorganism to combat the dearth of iron (Fe) and the excess of reactive oxygen species (ROS) promoted by Al toxicity. While in Rhizobium spp., exopolysaccharides have been invoked to sequester this metal, an ATPase is known to safeguard Anoxybacillus gonensis against the trivalent metal. Hydroxyl, carboxyl and phosphate moieties have also been exploited by microbes to trap Al. Hence, an understanding of the metabolic networks that are operative in microorganisms residing in polluted environments is critical in devising bioremediation technologies aimed at managing metal wastes. Metabolic engineering is essential in elaborating effective biotechnological processes to decontaminate metal-polluted surroundings.

MATERIAIS
Número do produto
Marca
Descrição do produto

Sigma-Aldrich
Aluminum, foil, thickness 0.45-0.55 mm, 99.999% trace metals basis
Sigma-Aldrich
Aluminum, granular, <1 mm, 99.7% trace metals basis
Sigma-Aldrich
Aluminum, wire, diam. 1.0 mm, 99.999% trace metals basis
Sigma-Aldrich
Aluminum, ReagentPlus®, beads, 5-15 mm, 99.9% trace metals basis
Sigma-Aldrich
Aluminum, foil, thickness 0.25 mm, 99.999% trace metals basis
Sigma-Aldrich
Aluminum, pellets, 3-12 mm, 99.99% trace metals basis
Sigma-Aldrich
Aluminum, evaporation slug, diam. × L 6.3 mm × 6.3 mm, 99.999% trace metals basis
Sigma-Aldrich
Aluminum, wire, diam. 0.58 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Aluminum, foil, thickness 0.13 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Aluminum, pellets, 3-8 mesh, ≥99.999% trace metals basis
Sigma-Aldrich
Aluminum, ACS reagent, 99%, wire, wire diam. ~1.5 mm
Sigma-Aldrich
Aluminum, rod, diam. × L 3.0 mm × 100 mm, 99.999% trace metals basis
Aluminum, IRMM®, certified reference material, 0.1 mm foil
Aluminum, wire reel, 25m, diameter 0.25mm, as drawn, 99.5%
Aluminum, wire reel, 10m, diameter 0.025mm, as drawn, 99.0+%
Aluminum, honeycomb, 300x300mm, thickness 5mm, cell size 3.2mm, cell wall 0.025mm, core density 0.072g/cm3, phenolic adhesive (resin), 99.5%
Aluminum, wire reel, 500m, diameter 0.5mm, as drawn, 99.5%
Aluminum, mesh, 150x150mm, nominal aperture 0.38mm, wire diameter 0.25mm, 40x40 wires/inch, open area 37%, plain weave mesh
Aluminum, foam, 150x150mm, thickness 10mm, bulk density 0.2g/cm3, porosity 0.93, aluminum 6101 grade, 98.5%
Aluminum, foam, 150x150mm, thickness 3.2mm, bulk density 0.2g/cm3, porosity 0.93, 16 pores/cm, aluminum 6101 grade, 98.5%
Aluminum, foam, 150x150mm, thickness 30mm, bulk density 0.2g/cm3, porosity 0.93, aluminum 6101 grade, 98.5%
Aluminum, foam, 150x150mm, thickness 6.35mm, bulk density 0.2g/cm3, porosity 0.93, 16 pores/cm, aluminum 6101 grade, 98.5%
Aluminum, foam, 150x150mm, thickness 6.35mm, bulk density 0.2g/cm3, porosity 0.93, 2 pores/cm, aluminum 6101 grade, 98.5%
Aluminum, foam, 150x150mm, thickness 6.35mm, bulk density 0.2g/cm3, porosity 0.93, 4 pores/cm, aluminum 6101 grade, 98.5%
Aluminum, foam, 150x150mm, thickness 6.35mm, bulk density 0.2g/cm3, porosity 0.93, 8 pores/cm, aluminum 6101 grade, 98.5%
Aluminum, foam, 300x400mm, thickness 6.35mm, bulk density 0.2g/cm3, porosity 0.93, aluminum 6101 grade, 98.5%
Aluminum, foam, 33x140mm, thickness 20mm, bulk density 0.2g/cm3, porosity 0.93, aluminum 6101 grade, 98.5%
Aluminum, honeycomb, 150x150mm, thickness 10mm, cell size 3.2mm, cell wall 0.025mm, core density 0g/cm3, phenolic adhesive (resin), 99.5%
Aluminum, honeycomb, 150x150mm, thickness 52.3mm, cell size 6.3mm, cell wall 0.064mm, core density 0.083g/cm3, phenolic adhesive (resin), facing skin aluminum 0.55mm, 99.9%
Aluminum, honeycomb, 300x300mm, thickness 10mm, cell size 3.2mm, cell wall 0.025mm, core density 0g/cm3, phenolic adhesive (resin), 99.5%

Redes sociais

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

Merck

Pesquisa. Desenvolvimento. Produção.

Somos um fornecedor global líder para o setor de ciências biológicas, com soluções e serviços para pesquisa, desenvolvimento e produção de biotecnologia, além de produção e desenvolvimento de terapias farmacológicas com medicamentos.

© 2021 Merck KGaA, Darmstadt, Alemanha e/ou suas filiais. Todos os direitos reservados.

A reprodução não autorizada de quaisquer materiais deste site é estritamente proibida.