Animal and vegetable fats and oils — Determination of aliphatic hydrocarbons in vegetable oils
动植物油脂 - 植物油中脂肪烃的测定
发布日期:
2015-08-13
ISO 17780:2015规定了一种方法,用于测定植物油中天然来源的C10至C56饱和脂肪烃,以及检测矿物油和柴油的存在。
该方法适用于所有类型的粗制和精制食用油和脂肪,矿物油的浓度为50 mg/kg至1000 mg/kg。
附录C中提出了精炼油和初榨油(或冷榨油)的快速方法。由于某些样品中观察到的甘油三酯缺乏保留,该快速方法不适用于原油。
附录D中提出了通过混合溶剂索氏提取法从食品样品中回收脂肪的方法。
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.