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Separation of flavonoids in the leaves of Sophora japonica by macroporous adsorption resin mixed-bed technology

Yingyu Zhao ( Lanzhou University of Technology , Lanzhou, China)
Zhenbin Chen (School of Material Science and Engineering, Lanzhou University of Technology , Lanzhou, China)
Donglei Liu (School of Material Science and Engineering, Lanzhou University of Technology , Lanzhou, China)
Jiapeng Long (School of Material Science and Engineering, Lanzhou University of Technology , Lanzhou, China)
Duolong Di (Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou, China, and Lanzhou Institute of Chemical Physics , Chinese Academy of Sciences, Lanzhou, China)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 2 May 2017

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Abstract

Purpose

The purpose of this paper is to separate and purify flavonoids existing in the leaves of Sophora japonica by a novel method, macroporous adsorption resin (MAR) mixed-bed technology, and the optimal MAR mixed bed was screened based on the adsorption experimental result with the order of single, two, three and four MAR mixed bed separately.

Design/methodology/approach

The adsorption performance of MAR and MAR mixed bed for flavonoids was studied using ultraviolet – visible (UV-VIS) spectrophotometry.

Findings

This research showed that the MAR mixed bed of LZ-54 + LZ-67 with a mass ratio of mLZ-54:mLZ-67 = 1:1 was the optimized combination with the optimal conditions of adsorption (volume V = 140 mL, pH = 5, T = 35°C) and desorption (liquid ratio R = 50 per cent, T = 30°C, pH = 6) obtained, relatively.

Practical implications

This study aims to find an efficient way of separating flavonoids and other components that are useful for human health from Sophora japonica, which is complying with the policy of sustainable development.

Originality/value

This contribution provided a novel way to separate flavonoids from Sophora japonica. Under the optimal conditions, the adsorption rate (F) of MAR mixed bed LZ-54 + LZ-67 to the flavonoids was 63.65 per cent, the desorption rate (D) was 87.31 per cent and the purity was dramatically achieved at 58.17 per cent from 17.67 per cent after a round of adsorption/desorption operation.

Keywords

Acknowledgements

This research project was financially supported by the National Natural Sciences Foundation of China (NSFC No. 21374128).

Citation

Zhao, Y., Chen, Z., Liu, D., Long, J. and Di, D. (2017), "Separation of flavonoids in the leaves of Sophora japonica by macroporous adsorption resin mixed-bed technology", Pigment & Resin Technology, Vol. 46 No. 3, pp. 235-243. https://doi.org/10.1108/PRT-01-2016-0007

Publisher

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Emerald Publishing Limited

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