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| 菜籽油中蜡含量快速测定方法的研究 |
| Rapid determination method of wax content in rapeseed oil |
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| DOI： |
| 中文关键词: 菜籽油 浊度仪 蜡质 微量 |
| 英文关键词:rapeseed oil turbidity instrument wax trace |
| 基金项目: |
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| 中文摘要: |
| 建立了一种菜籽油中蜡含量的快速检测方法。根据蜡质在冰水混合浴中结晶析出的特性，利用高灵敏度的浊度仪测其浑浊度来确定蜡含量。结果表明：该方法测定的蜡含量在0～250 mg/kg范围内具有良好的线性关系；10、20、30 mg/kg和60 mg/kg的加标回收率分别为75.0%～89.0%，715%～88.5%，83.3%～102.3%和90.0%～103.3%；对同一未脱蜡菜籽油和脱蜡菜籽油中的蜡含量测定结果分别为30.0～33.9 mg/kg和12.7～13.3 mg/kg。说明该法结果准确、重现性较好，且操作简便、耗时短，可应用于菜籽油中微量蜡质的快速测定。 |
| 英文摘要: |
| A rapid determination method of wax content in rapeseed oil was established. According to the crystallization characteristics of wax in ice-water mixing bath, the wax content was determined through measuring the turbidity value by turbidity instrument with high sensitivity. The results showed that a good linear relationship was obtained when the content of wax was in the range of 0-250 mg/kg by the method. The recoveries of the standard addition of 10, 20, 30 mg/kg and 60 mg/kg were 75.0%-89.0%，71.5%-88.5%，83.3%-102.3% and 90.0%-103.3% respectively. The wax contents in rapeseed oils before and after dewaxing were determined and the results were 30.0-33.9 mg/kg and 12.7-13.3 mg/kg respectively. It indicated that the method had the items of accurate result, good reproducibility, simple operation and shorter time consuming, which could be applied to rapidly determine trace wax in rapeseed oil. |
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