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| 气相色谱法测定食用油中的植物甾醇 |
| Determination of phytosterols in edible oil by GC |
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| DOI： |
| 中文关键词: 食用油 植物甾醇 气相色谱 内标 |
| 英文关键词:edible oil phytosterol GC internal standard |
| 基金项目: |
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| 中文摘要: |
| 对食用油进行皂化前处理，以胆甾烷醇为内标，采用气相色谱法测定菜籽甾醇、菜油甾醇、豆甾醇和β-谷甾醇4种植物甾醇含量。结果表明：该方法测定食用油中植物甾醇的专一性强，方法的检出限和定量限分别为3.00～3.30 mg/100 g和9.00～11.00 mg/100 g,精密度(RSD)为0.89%，回收率为90.51%～110.25%。该方法用于测定食用油中4种植物甾醇有效可靠。 |
| 英文摘要: |
| The edible oil was saponified, and the contents of brassicasterol, campesterol, stigmasterol and β-sitosterol were determined by GC method with cholesterol as internal standard. The results showed that determination of phytosterols in edible oil by GC- internal standard method was highly specific. The limits of detection and quantitation were 3.00-3.30 mg/100 g and 9.00-11.00 mg/100 g, respectively. The precision and recovery rate were 0.89% and 90.51%-110.25%, respectively. The method was reliable on analysing of four phytosterols in edible oil. |
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