TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

chemostat [3 records]

Record 1 2010-12-23

English

Subject field(s)
  • Biological Sciences
DEF

Fermentation vessel or bioreactor in which steady-state growth is maintained by providing the cells with a constant input of nutrients. The rate of growth can be regulated by the level of a specific nutrient and the dilution rate (rate of removal of organisms from the vessel) matched to the cell growth rate.

CONT

Both mathematical models of the action of a chemostat and experimental studies show that a single-stage chemostat of practical size cannot yield a high concentration of a product and low concentrations of unconsumed raw materials. The inefficiency is particularly great in the synthesis of products such as penicillin, which is a secondary metabolite: it is made by living cells but its synthesis does not arise in the course of the metabolism that keeps the cells alive and growing. It is characteristic of the industrial production of a secondary metabolite that the proliferation of the organism precedes the accumulation of the metabolite by a significant margin.

French

Domaine(s)
  • Sciences biologiques
DEF

Type de réacteur dans lequel on contrôle la réaction par l'intermédiaire du flux entrant. On fixe la concentration d'une substance nutritive critique à une valeur telle que les autres substances nutritives se trouvent en excès. La substance nutritive critique impose alors une limite à la prolifération des micro-organismes.

CONT

Pour la production industrielle, il est nécessaire de réaliser des cultures de micro-organismes en très grandes quantités dans des récipients, adaptés aux différents types de fabrication, nommés fermenteurs, dont le volume peut atteindre plusieurs centaines de litres. Ils doivent être thermostatés avec précision. [...] La tendance actuelle est une automatisation de plus en plus poussée, avec un développement ininterrompu des cultures (technique du «chemostat»).

Spanish

Save record 1

Record 2 1994-04-15

English

Subject field(s)
  • Farm Management and Policy
  • Seafood and Freshwater Food (Food Industries)
  • Algae
CONT

Continuous culture is usually carried out using devices called chemostats and turbidostats .... Using some sort of overflow device, fresh medium enters the algal culture and displaces some of the old medium containing the algal cells. The chemostat has a pump that adds new medium at a continuous, fixed rate, ....

French

Domaine(s)
  • Gestion et politique agricole
  • Produits de mer et d'eau douce (Industr. alim.)
  • Algues
DEF

Système de culture continue d'algues par stabilisation de la croissance de la population en renouvelant en permanence le milieu dans lequel un élément limitant joue un rôle de régulation.

Spanish

Campo(s) temático(s)
  • Gestión y política agrícola
  • Productos del mar y de agua dulce (Ind. alimentaria)
  • Algas
Save record 2

Record 3 1986-11-26

English

Subject field(s)
  • Microbiology and Parasitology
  • Biochemistry
DEF

A device that permits cultivation of microbes under constant conditions by providing inflow of medium and outflow of culture at the same rate, the density of the growth being set by some limiting nutrient.

French

Domaine(s)
  • Microbiologie et parasitologie
  • Biochimie
DEF

Réacteur biologique dont le débit d'entrée est égal au débit de sortie par apport et soutirage continus du milieu.

Spanish

Save record 3

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