Simultaneous analysis of eight vitamin E isomers in Moringa oleifera Lam. leaves by ultra performance convergence chromatography
文献类型： 外文期刊
作者： Qi, Ningli 1 ; Gong, Xiao 2 ; Feng, Cuiping 3 ; Wang, Xiaoxi 4 ; Xu, Yongwei 5 ; Lin, Lijing 2 ;
作者机构： 1.Minist Agr Zhanjiang, Ctr Food Qual Supervis & Testing, Chinese Acad Trop Agr Sci, 48 Renmindadaonan, Zhanjiang 524001, Peoples R China
2.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, 48 Renmindadaonan, Zhanjiang 524001, Peoples R China
3.Shanxi Agr Univ, Coll Food Sci & Engn, Jinzhong 030801, Peoples R China
4.Nutricia Pharmaceut Wuxi Co Ltd, 17 Xinming Rd, Wuxi 214111, Peoples R China
5.Waters Corp, Bldg 13,1000 Jinhai Rd, Shanghai 201206, Peoples R China
关键词： Tocopherols;Tocotrienols;UPC2;Moringa oleifera Lam. leaf
期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： A new method for simultaneous determination of eight vitamin E isomers including alpha-, beta-, gamma-, and delta-tocopherol and alpha-, beta-, gamma-, and delta-tocotrienol by ultra-performance convergence chromatography (UPC2) equipped with a diode array detector was reported. They were separated on a BEH 2-EP column (3.0 mm x 100 mm, 1.7 mu m) using gradient elution (95: 5-80: 20) with a mobile phase consisted of CO2 and methanol: isopropanol (1: 1, v/v), back pressure of 1800 psi, flow rate of 1.5 ml/min and detection at 294 nm. The results showed good linearity (R-2 = 0.9990-0.9998) and high resolution (1.48-7.67). Limits of detection (LOD) and quantification (LOQ) ranged from 23-49 ng/L and 70-150 ng/L, respectively. Relative standard deviations (RSD) for repeatability and reproducibility were 0.62-3.16% and 0.82-3.34%, respectively. Moreover, this method was successfully applied to analysis the vitamin E isomers in Moringa oleifera leaf samples. (C) 2016 Elsevier Ltd. All rights reserved.
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