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| 青海亚麻籽油脂肪酸指纹图谱 构建及掺伪识别 |
| Fatty acid fingerprint construction and adulteration identification of Qinghai flaxseed oil |
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| DOI： |
| 中文关键词: 青海亚麻籽油 脂肪酸组成 气相色谱法 指纹图谱 掺伪识别 |
| 英文关键词:Qinghai flaxseed oil fatty acid composition gas chromatography fingerprint adulteration identification |
| 基金项目:青海省青年自然科学基金(2018-ZJ-970Q)；青海大学省部共建三江源生态与高原农牧业国家重点实验室自主课题（2019-ZZ-06） |
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| 中文摘要: |
| 以青海省不同产地的亚麻籽为原料，采用索氏抽提法提取亚麻籽油，通过气相色谱法分析亚麻籽油脂肪酸组成，并运用中药色谱指纹图谱相似度评价系统建立青海亚麻籽油脂肪酸指纹图谱，利用指纹图谱鉴定掺伪量分别为10%、20%、30%、40%、50%的大豆油、玉米油、花生油、菜籽油、葵花籽油、芝麻油的掺伪模型。结果表明：构建的指纹图谱符合指纹图谱研究的技术要求，可在一定程度上代表青海亚麻籽油样品的整体性；该指纹图谱可以鉴别掺伪量20%及以上大豆油、葵花籽油掺伪模型，10%及以上玉米油、花生油和菜籽油掺伪模型，而对芝麻油掺伪识别效果欠佳，掺伪量大于30%时才能鉴定。 |
| 英文摘要: |
| Selecting flaxseed from different producing areas in Qinghai province as raw materials, flaxseed oil was extracted by Soxhlet extraction method, and the fatty acid composition of flaxseed oil was analyzed by gas chromatography, then the fatty acid standard fingerprint was constructed using the similarity evaluation system of chromatographic fingerprint of traditional Chinese medicine. The adulteration models of 10%, 20%, 30%, 40% and 50% of soybean oil, corn oil, peanut oil, rapeseed oil, sunflower seed oil and sesame oil mixed in flaxseed oil were identified by the constructed fingerprint. The results showed that the fingerprint constructed met the technical requirments for fingerprinting studies and could represent the overall properties of Qinghai flaxseed oil to a certain extent. The fingerprint could identify adulteration amount of equal to and above 20% soybean oil and sunflower seed oil, equal to and above 10% corn oil, peanut oil and rapeseed oil. The identification effect of sesame oil adulteration was not good, and the identification could only be performed when the adulteration amount was above 30%. |
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