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CRUDE VEGETABLE OIL [3 records]

Filter results by subject field Alphabetical list of terms

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 This material is very similar to the parent triglyceride except that one of the fatty acid chains has been replaced by a compound of phosphorus.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 2004-10-15

English

Subject field(s)
  • Chemical Engineering
CONT

Sulfuric acid treatment of mineral oils results in oils of improved odor, color, color stability, stability to heat and oxidation and resistance to sludge formation.

CONT

acid refining : Process whereby the impurities in a crude vegetable oil are removed by treatment with sulphuric [sic : obsolete form for sulfuric] acid.

French

Domaine(s)
  • Génie chimique
CONT

raffinage à l'acide : Procédé par lequel les impuretés d'une huile végétale brute sont éliminées par traitement à l'acide sulfurique.

Spanish

Save record 2

Record 3 2001-11-05

English

Subject field(s)
  • Food Industries
  • Industrial Techniques and Processes
  • Fatty Substances (Food)
DEF

A process whereby the impurities in a crude vegetable oil are removed by treatment with sulphuric acid.

French

Domaine(s)
  • Industrie de l'alimentation
  • Techniques industrielles
  • Corps gras (Ind. de l'aliment.)
DEF

Procédé par lequel les impuretés d'une huile végétale brute sont éliminées par traitement à l'acide sulfurique.

Spanish

Save record 3

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