TERMIUM Plus®

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HEAT TEST [2 records]

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Filter results by subject field

Alphabetical list of terms

Record 1 2014-10-29

English

Subject field(s)
  • Food Industries
  • Fatty Substances (Food)
  • Grain Growing
CONT

Many crude vegetable oils contain large amounts of phosphatides or "break" material. This material is very similar to the parent triglyceride except that one of the fatty acid chains has been replaced by a compound of phosphorus. The phosphatides precipitate as a gelatinous mass when the oil is heated to 260°C to 300°C. ... In such a test, the oil is carefully heated in a test tube; if any break is present, the oil clouds at about 260°C and within 5° to 25°C the break will have separated. Also, at the temperature of incipient break, the oil will bleach, the extent of heat-bleach (as well as the amount of break) giving a good indication as to the quality of the oil.

OBS

Term used at the Canadian Grain Commission.

French

Domaine(s)
  • Industrie de l'alimentation
  • Corps gras (Ind. de l'aliment.)
  • Culture des céréales
CONT

Beaucoup d'huiles végétales brutes renferment de grandes quantités de phospholipides. Ces substances ressemblent aux triglycérides correspondants sauf que l'un des acides gras est remplacé par un composé phosphoré. Les phospholipides forment en précipitant une masse gélatineuse lorsque l'huile est chauffée entre 260° et 300°C. [...] Il est très important, dans le contrôle de la qualité, de disposer d'un test pour vérifier la présence de phospholipides. Dans l'essai à la chaleur, l'huile est chauffée lentement dans un tube à essai; si elle contient des phospholipides, elle se trouble vers 260°C et une élévation de la température de 5° à 25°C provoque la séparation des phospholipides [...]

OBS

Terme en usage à la Commission canadienne des grains.

Spanish

Campo(s) temático(s)
  • Industria alimentaria
  • Substancias grasas (Industria alimentaria)
  • Cultivo de cereales
Save record 1

Record 2 - external organization data 1994-10-04

English

Subject field(s)
  • Engineering Tests and Reliability
  • Transport of Goods
  • Radiation Protection
  • Compartment - Canadian Nuclear Safety Commission
CONT

Test for Special Form Radioactive Material. ... Heat test: The material is heated in air to a temperature of 800°C and maintained at that temperature for a period of 10 minutes. The material is then allowed to cool.

French

Domaine(s)
  • Fiabilité, contrôle et essais (Ingénierie)
  • Transport de marchandises
  • Radioprotection
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

Épreuves pour les matières radioactives sous forme spéciale. [...] Épreuve de résistance à la chaleur. Les matières sont chauffées dans de l'air porté à la température 800 °C et sont maintenues à cette température pendant dix minutes, après quoi on les laisse refroidir.

Spanish

Save record 2

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