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. 2019 Feb 15;24(4):709.
doi: 10.3390/molecules24040709.

A New Method for Simultaneous Determination of Phenolic Acids, Alkaloids and Limonoids in Phellodendri Amurensis Cortex

Yao Chen  1 , Zhao Zhang  2 , Yang Zhang  3 , Xiaomei Zhang  4 , Zhipeng Zhang  5 , Yonghong Liao  6 , Bengang Zhang  7
Affiliations

A New Method for Simultaneous Determination of Phenolic Acids, Alkaloids and Limonoids in Phellodendri Amurensis Cortex

Yao Chen et al. Molecules. .

Abstract

Phellodendri Amurensis Cortex (PAC) is a well-known herbal medicine in China with complex components, but the previous research has mostly focused on its alkaloids analysis. For the first time, a simpler and more efficient method was proposed in this paper to simultaneously determine the content of three different kinds of compounds-phenolic acids, alkaloids and limonoids-in PAC. The phenolic acids included 3-O-feruloylquinic acid, 4-O-feruloylquinic acid and syringin. The alkaloids include magnoflorine, phellodendrine, jatrorrhizine, palmatine and berberine, while the limonoids include obaculactone and obacunone. An approach combining multi-wavelength and HPLC-DAD was used in this study due to the great difference in maximum absorption wavelength of the various components. Four wavelengths at 215, 275, 280 and 310 nm, respectively, were chosen for monitoring. It has been indicated through appropriate tests that this approach is of high accuracy, good repeatability and stability and provides a scientific basis for the quality assessment of PAC and associated derivatives. In addition, the chromatographic fingerprints method combined with multivariate statistical analysis chosen in this study was proved to be effective and reasonable for an accurate classification of 33 batches of samples collected from different locations.

Keywords: alkaloids; limonoids; multi-wavelength; phellodendri amurensis cortex; phenolic acids; quality evaluation.

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Conflict of interest statement

We declare that we have no financial or personal relationships with people or organizations that could inappropriately influence our work.

Figures

Figure 1
Figure 1
Structures of the 10 constituents identified in Phellodendri Amurensis Cortex (PAC).
Figure 1
Figure 1
Structures of the 10 constituents identified in Phellodendri Amurensis Cortex (PAC).
Scheme 1
Scheme 1
Proposed fragmentations of chlorogenic acid, 3-O-feruloylquinic acid (1) and 4-O-feruloylquinic acid (2).
Scheme 2
Scheme 2
Proposed fragmentation of syringin.
Scheme 3
Scheme 3
Proposed fragmentation of obaculactone.
Figure 2
Figure 2
Chromatograms for chemical analysis. (A) Phellodendri Amurensis Cortex (PAC) sample, (B) standard mixture. Peak identities: 3-O-feruloylquinic acid (1), 4-O-feruloylquinic acid (2), magnoflorine (3), syringing (4), phellodendrine (5), jatrorrhizine (6), berberine (7), palmatine (8), obaculactone (9), obacunone (10).
Figure 3
Figure 3
Chromatographic fingerprints for Phellodendri Amurensis Cortex (PAC) samples.
Figure 4
Figure 4
Dendrogram of hierarchical cluster analysis for the 33 Phellodendri Amurensis Cortex (PAC) samples.
See this image and copyright information in PMC

References

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