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A6582

Sigma-Aldrich

Antifoam A concentrate

active silicone polymer 100%

Sinónimos:

Antifoam agent, Antifoam solution, Foam control agent

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About This Item

Código UNSPSC:
12161901
NACRES:
NA.85

Nivel de calidad

200

formulario

emulsion (aqueous)

técnicas

cell culture | hybridoma: suitable
microbiological culture: suitable

densidad

0.97 g/mL at 25 °C

aplicaciones

microbiology

temp. de almacenamiento

room temp

idoneidad

(Mammalian (suspension))
bacteria (fermentation)

Descripción general

Antifoam A is a silicone-based product used to prevent or minimize foaming in both microbial fermentation systems and mammalian suspension cultures. Control of foaming minimizes damage to the cells, resulting in increased protein/antibody production. Extremely effective for aqueous and non-aqueous systems. Effective at concentrations in the 1-50ppm range.

Aplicación

Antifoam A concentrate has been used:
  • in bioreactor culture for Staphylococcal enterotoxin C (SEC) production.
  • to prevent foam formation during the aerobic treatment of sludge.
  • to study the impact of surface tension on bioaerosol generation during bubbling.

Características y beneficios

  • Molecular biology grade and tested for use in bacterial fermentation.
  • Extremely effective foam suppressor for aqueous and non-aqueous systems.
  • Made of 100% active silicone polymer, free of emulsifiers.
  • Typically, effective at 1-100 ppm.
  • Product will be stable in the pH range of 5 to 9.
  • Can be directly added to a fermentation medium but it is not recommended that it be pumped to a fermenter on an as-needed basis.

Componentes

Antifoam A is a 100% active silicon polymer containing no non-ionic emulsifiers .

Nota de preparación

Antifoam A can be pre-diluted with 3-10 parts of aqueous propylene glycol or non-aqueous vegetable oil with slow mixing.

Producto relacionado

Referencia del producto
Descripción
Precios

Pictogramas

Environment
GHS09

Palabra de señalización

Warning

Frases de peligro

H410

Consejos de prudencia

P273 - P391 - P501

Clasificaciones de peligro

Aquatic Acute 1 - Aquatic Chronic 1

Código de clase de almacenamiento

10 - Combustible liquids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

>213.8 °F - closed cup

Punto de inflamabilidad (°C)

> 101 °C - closed cup

Equipo de protección personal

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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M Schlömann et al.
Journal of bacteriology, 172(9), 5119-5129 (1990-09-01)
Enzymatic conversion of 4-fluorocatechol in the simultaneous presence of partially purified preparations of catechol 1,2-dioxygenase from Pseudomonas cepacia and muconate cycloisomerase from Alcaligenes eutrophus 335 yielded a product that was unambiguously identified as (+)-4-fluoromuconolactone [(+)-4-carboxymethyl-4-fluoro-but-2-en-4-olide]. This compound was shown to
F P Ernani et al.
Infection and immunity, 61(6), 2596-2601 (1993-06-01)
Substantial evidence indicates that molecules released by infectious organisms affect virulence and influence immunity to infection. The characterization of extracellular molecules and their mechanism of release is therefore critical to understanding host-parasite relationships. The cestode parasite Mesocestoides corti is known
Experience with a perfo-suction system for the recovery of schistosomes from laboratory rodents
T. F. H. G. Jackson, C. D. Dettman, et al.
Laboratory Animal Science, 16, 65-67 (1982)
Factors affecting staphylococcal enterotoxin C bovine production in milk
Hunt K, et al.
International dairy journal, 39(1), 41-46 (2014)
Sarah J Routledge et al.
Microbial cell factories, 10, 17-17 (2011-03-24)
Pichia pastoris is a widely-used host for recombinant protein production. Initial screening for both suitable clones and optimum culture conditions is typically carried out in multi-well plates. This is followed by up-scaling either to shake-flasks or continuously stirred tank bioreactors.
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