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. 2020 Aug 10;5(33):20825-20830.
doi: 10.1021/acsomega.0c01929. eCollection 2020 Aug 25.

Rapid and Simultaneous Quantification of Five Quinolizidine Alkaloids in Lupinus angustifolius L. and Its Processed Foods by UPLC-MS/MS

In Min Hwang  1 , Hae-Won Lee  1 , Hee Min Lee  1 , Ji-Su Yang  1 , Hye Young Seo  1 , Yun-Jo Chung  2 , Sung Hyun Kim  1
Affiliations

Rapid and Simultaneous Quantification of Five Quinolizidine Alkaloids in Lupinus angustifolius L. and Its Processed Foods by UPLC-MS/MS

In Min Hwang et al. ACS Omega. .

Abstract

Quinolizidine alkaloids (QAs) are toxic secondary metabolites of Lupinus plants. This study reports the simultaneous quantification of five alkaloids from Lupinus angustifolius L. and its processed foods by ultraperformance liquid chromatography with electrospray ionization mass spectrometric detection. After optimizing the extraction conditions, the analytical method was validated for the QAs in lupin beans and in three major processed foods through detection and quantification limits, linearity, precision, and accuracy. The detection and quantification limits of the QAs were 0.5-1.7 and 1.5-5.7 mg kg-1, respectively. The linearity was greater than 0.9992 and the precision was less than 3.1%. The recoveries of three different concentrations of each QA were 89.5-106.2%. For both raw lupin beans and processed foods, lupanine was the major QA, and 13-hydroxylupanine and angustifoline were detected in lower amounts. This method could be widely used for accurate risk assessment of QAs.

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Conflict of interest statement

The authors declare no competing financial interest.

Figures

Figure 1
Figure 1
Representative analyzed L. angustifolius chromatograms of lupin alkaloids. (A) Lupinine, (B) 13-hydroxylupanine, (C) lupanine, (D) angustifoline, and (E) sparteine.
See this image and copyright information in PMC

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