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| Triglyceride fingerprint construction and adulteration identification of Qinghai flaxseed oil |
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| DOI： |
| KeyWord:Qinghai flaxseed oil triglyceride fingerprint adulteration identification |
| FundProject: |
| Author Name | Affiliation | | WANG Xingrui1, HAN Yuze1, LI Yingxia1, WANG Shuzhen1,CHEN Yunyun1, WANG Jinying1, 2 | 1.College of Agriculture and Animal Husbandry,Qinghai University, Xining 810016，China
2.State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016，China |
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| Abstract: |
| The triglyceride (TAG) components in Qinghai flaxseed oil were determined qualitatively and quantitatively by HPLC-ELSD, and the standard TAG fingerprint was established by the similarity evaluation system of traditional Chinese medicine chromatographic fingerprint. The fingerprint constructed was used to identify the adulteration model of soybean oil, corn oil, rapeseed oil, peanut oil, sunflower seed oil and sesame oil with adulteration amount 5%-50%. The results showed that the main TAGs in Qinghai flaxseed oil were OLnLn (29.40%), LnLnLn (23.71%), OLnO (15.10%), OLLn (13.43%), LLnLn (13.32%).The relative error between the identification result and the true adulteration amount showed that the fingerprint constructed could identify the adulteration models of soybean oil, sunflower seed oil and sesame oil with adulteration amount 5%-50%, and the relative error for the 10% peanut oil adulteration model was relatively high (915%), and the identification of the 5% rapeseed oil adulteration model could not be realized. The TAG fingerprint of Qinghai flaxseed oil constructed provides a theoretical basis for quality control and adulteration identification of Qinghai flaxseed oil. |
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