Citation: CHU Gang-Hui, WANG Kun, YIN Xue-Bo. Preconcentration of Luteoloside from Coreopsis Tinctoria and Determination by Near-infrared Spectroscopy[J]. Chinese Journal of Analytical Chemistry, ;2020, 48(4): 536-542. doi: 10.19756/j.issn.0253-3820.191677 shu

Preconcentration of Luteoloside from Coreopsis Tinctoria and Determination by Near-infrared Spectroscopy

CHU Gang-Hui ^1, ,
WANG Kun ¹ ,
YIN Xue-Bo ^1,2

1.
Xinjiang Laboratory of Native Medicinal and Edible Plant Resources Chemistry, College of Chemistry and Environmental Science, Kashgar University, Kashgar 844006, China;
2.
College of Chemistry, Nankai University, Tianjin 300071, China

Received Date: 15 November 2019
Revised Date: 16 January 2020

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21765012).

Benzoboric acid adsorbent was prepared tenderly for adsorption of trace luteoloside from Coreopsis tinctoria. Without desorption, the enriched samples were detected directly by near-infrared (NIR) diffuse reflectance spectroscopy method. To predict its content, a quantitative correction model for luteoloside was established by partial least square regression method. The results illustrated that the adsorption efficiency was 85.5% when 0.2 g of benzoboric acid adsorbent was selected and the sufficient adsorption was achieved via vibrating at room temperature for 20 min. For luteoloside in prediction set, the correlation coefficient between the reference concentration and the predicted concentration was 0.9765 after the NIR spectral data were processed with continuous wavelet transform. The recovery was 84.7%-113.2% in the concentration range of 0.15-19.5 mg/L. The results indicated that the preconcentration strategy with benzoboric acid adsorbent was successfully developed, and the determination was sensitive and selective for luteoloside by means of the combination of adsorption-preconcentration and NIR diffuse reflectance spectroscopy. The strategy could be recommended for the determination of other effective constituents in medicine plants.
- Luteoloside,
- Phenylboronic acid adsorbent,
- Preconcentration,
- Selective detection,
- Near-infrared diffuse reflectance spectroscopy
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