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| 餐饮废油与食用植物油品质的GC-MS检测 |
| Quality analysis of cooking waste oil and edible vegetable oil by GC-MS |
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| DOI： |
| 中文关键词: 潲水油 煎炸老油 合格植物油 气相色谱-质谱联用仪 |
| 英文关键词:hogwash oil deep-frying oil qualified vegetable oil GC-MS |
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| 中文摘要: |
| 采用气相色谱-质谱联用(GC-MS)法分析餐饮废油特征性脂肪酸组成成分.以合格鲜榨菜籽油、调和油和餐饮废油潲水油、煎炸老油为材料,通过油样的皂化、甲酯化处理后,以毛细管柱DB-5MS作分离柱,用气相色谱一质谱仪分析出脂肪酸组成与含量.结果表明,潲水油、煎炸老油中脂肪酸相对不饱和度(U/R≈1.9)明显小于合格植物油(U/R≈4.4),并在其中检测到了十三烷酸(含量约0.27%)和十七烷酸(含量约6.49%)等奇数碳脂肪酸. |
| 英文摘要: |
| The distinctive fatty acid compositions of cooking waste oil were identified by GC-MS.The fresh pressed rapeseed oil,blend oil,hogwash oil and deep-frying oil were saponified and methyl esterified,then the fatty acids of them were separated by capillary column DB-5MS and detected by GC-MS.The results showed that the relative unsaturation(U/R,1.9) of fatty acids in cooking waste oil was significantly less than that of the qualified oil(U/R,4.4),and they contained distinctive fatty acids such as tridecylic ac... |
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