期刊
ANALYTICAL BIOCHEMISTRY
卷 631, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ab.2021.114373
关键词
Solid-phase extraction; Rutin; Emodin; Quercetin; 1; 8-Dihydroxyanthraquinone
资金
- National Natural Science Foundation of China (NSFC) [21005021]
- Natural Science Foundation of Guangdong Province [2016A030313740, 2021A1515011410]
- Guangdong Provincial Science and Technology Project [2016B030303002]
A new solid-phase extraction (SPE) coupled with capillary electrophoresis (CE) method was developed for preconcentration and determination of anthraquinones and flavonoids in honey. By optimizing extraction parameters and using chitin as adsorbent, the method achieved enrichment and detection of target compounds with high sensitivity.
ABS T R A C T Based on advantages of capillary electrophoresis (CE), a new solid-phase extraction (SPE) coupled with CE has been developed for preconcentration, enrichment and determination of anthraquinones and flavonoids (rutin, emodin, quercetin, 1,8-dihydroxyanthraquinone) in honey. The environmental-friendly chitin activated after an easy processing is selected as the adsorbent to enrich analytes. Then, chitin was filled into the filter as the solid phase. To improve the extraction effect, some key parameters of extraction were optimized. Under the optional extraction conditions, the chitin showed excellent adsorption capacity and selectivity over rutin, emodin, quercetin, and 1,8-dihydroxyanthraquinone, with enrichment factors reaching 5 folds. The CE coupled with fluorescence detection was used for the detection. Results prove the method is simple, fast, and highly sensitive, with the limit of detection (LOD) is 3.00-200.0 ng/mL; the recovery is 90.0-107.0%, and relative standard deviation of (RSD) is 1.8-8.3%.
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