NF ISO 17780
Animal and vegetable fats and oils - Determination of aliphatic hydrocarbons in vegetable oils
ISO 17780:2015 specifies a method for the determination of saturated aliphatic hydrocarbons from C10 to C56 of natural origin present in vegetable oils, and for detecting the presence of mineral oil and diesel oil. The method is applicable to all types of crude and refined edible oils and fats, for concentrations of mineral oils from 50 mg/kg to 1 000 mg/kg. A rapid method for refined and virgin (or cold-pressed) oils is proposed in Annex C. This rapid method is not adapted for crude oils due to a lack of retention of triglycerides observed for some samples. A method for fat recovery from food samples by soxhlet extraction with a blend of solvents is proposed in Annex D.
ISO 17780:2015 specifies a method for the determination of saturated aliphatic hydrocarbons from C10 to C56 of natural origin present in vegetable oils, and for detecting the presence of mineral oil and diesel oil.
The method is applicable to all types of crude and refined edible oils and fats, for concentrations of mineral oils from 50 mg/kg to 1 000 mg/kg.
A rapid method for refined and virgin (or cold-pressed) oils is proposed in Annex C. This rapid method is not adapted for crude oils due to a lack of retention of triglycerides observed for some samples.
A method for fat recovery from food samples by soxhlet extraction with a blend of solvents is proposed in Annex D.
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1 Domaine d'application
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2 Références normatives
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3 Termes et définitions
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4 Principe
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5 Réactifs
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6 Appareillage
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7 Échantillonnage
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8 Préparation de l'échantillon pour essai
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9 Mode opératoire
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10 Dosage des hydrocarbures susceptibles d'être d'origine minérale
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11 Fidélité
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12 Rapport d'essai
- Annexe A Exemples de chromatogrammes
- Annexe B Validation de la purification sur gel de silice imprégné de nitrate d'argent
- Annexe C Mode opératoire de la méthode rapide
- Annexe D Extraction de la matière grasse d'un échantillon alimentaire
- Annexe E Résultats des essais interlaboratoires
- Bibliographie
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