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Identification and determination of carboxylic acids in food samples using 2-(2-(anthracen-10-yl)-1H-phenanthro[9,10-d]imidazol-1-yl)ethyl
Zhiwei Sun; Jinmao You; Cuihua Song; Lian Xia
2011-05-18
Source PublicationTalanta
ISSN0039-9140
Volume85Pages:1088-1099
AbstractA new labeling reagent for carboxylic acids, 2-(2-(anthracen-10-yl)-1H-phenanthro[9,10-d]imidazol-1-yl)ethyl 4-methylbenzenesulfonate (APIETS) has been designed and synthesized. It was used to label eight fatty acids (lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, oleic acid, linoleic acid and linolenic acid) and four hydroxy pentacyclic triterpene acids (oleanolic acid, ursolic acid, betulinic acid and maslinic acid), successfully. APIETS could easily and quickly label carboxylic acids in the presence of K2CO3 catalyst at 85 ?C for 35 min in N,N-dimethylformamide solvent. The carboxylic acids derivatives were separated on a C8 reversed-phase column with gradient elution and fluorescence detection at _ex/_em = 315/435 nm. Identification of these derivatives was carried out by online mass spectrometry with atmospheric pressure chemical ionization in positive ion mode. The detection limits obtained were 13.37–30.26 fmol (signal-to-noise ratio of 3). The proposed method has been applied to the quantification of carboxylic acids in sultana raisin (Thompson seedless), hawthorn flake (Crataegus pinnatifida Bge.), Lycium barbarum seed oil and Microula sikkimensis seed oil with recoveries over 95.3%. It has been demonstrated that APIETS is a prominent labeling reagent for determining carboxylic acids with highperformance liquid chromatography.
Indexed BySCI
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/2112
Collection中国科学院西北高原生物研究所
Recommended Citation
GB/T 7714
Zhiwei Sun,Jinmao You,Cuihua Song,et al. Identification and determination of carboxylic acids in food samples using 2-(2-(anthracen-10-yl)-1H-phenanthro[9,10-d]imidazol-1-yl)ethyl[J]. Talanta,2011,85:1088-1099.
APA Zhiwei Sun,Jinmao You,Cuihua Song,&Lian Xia.(2011).Identification and determination of carboxylic acids in food samples using 2-(2-(anthracen-10-yl)-1H-phenanthro[9,10-d]imidazol-1-yl)ethyl.Talanta,85,1088-1099.
MLA Zhiwei Sun,et al."Identification and determination of carboxylic acids in food samples using 2-(2-(anthracen-10-yl)-1H-phenanthro[9,10-d]imidazol-1-yl)ethyl".Talanta 85(2011):1088-1099.
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