Simultaneous purification of tea polyphenols and caffeine from discarded green tea by macroporous adsorption resins

Liu, Yongfeng; Bai, Qingshun; Liu, Yi; Di, Duolong; Guo, Mei; Zhao, Lei; Li, Jintian

doi:10.1007/s00217-013-2073-z

Cited by 19 publications

(6 citation statements)

References 37 publications

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“…Macroporous adsorption resins (MAR) have drawn great attention in many elds for their excellent properties, such as large specic surface area, low density and high adsorption capacity. 1,2 Due to these unique advantages, MAR have been widely applied in the separation and purication of bioactive compounds from natural resources: avonoids from the extract of Chinese wolfberry, 3 narirutin from extracts of Citrus unshiu peels, 4 anthocyanins from grape pomace extracts, 5 and tea polyphenols and caffeine from discarded green tea, 6 etc. However, the pore size of the MAR mentioned above are approximately 5-10 nm in general.…”

Section: Introductionmentioning

confidence: 99%

Design and preparation of porous polymer particles with polydopamine coating and selective enrichment for biomolecules

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Design and preparation of porous polymer particles with polydopamine coating and selective enrichment for biomolecules

et al. 2017

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“…Although several works dealt with PC adsorption, only a few studies focused on the development of continuous flow processes for the adsorption of PC mixtures [39][40][41][42][43][44][45]. Among these, only one used an actual OMW [39], whereas the others used other natural sources or synthetic PC mixtures.…”

Section: Introductionmentioning

confidence: 99%

Batch and Continuous Flow Adsorption of Phenolic Compounds from Olive Mill Wastewater: A Comparison between Nonionic and Ion Exchange Resins

Pinelli

Bacca

Kaushik

et al. 2016

International Journal of Chemical Engineering

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The goals of this work were (i) to compare two anion ion exchange resins (IRA958 Cl and IRA67) and a nonionic resin (XAD16) in terms of phenolic compounds adsorption capacity from olive mill wastewater and (ii) to compare the adsorption capacity of the best resin on columns of different length. The ion exchange resins performed worse than nonionic XAD16 in terms of resin utilization efficiency (20% versus 43%) and phenolic compounds/COD enrichment factor (1.0 versus 2.5). The addition of volatile fatty acids did not hinder phenolic compounds adsorption on either resin, suggesting a noncompetitive adsorption mechanism. A pH increase from 4.9 to 7.2 did not affect the result of this comparison. For the best performing resin (XAD16), an increase in column length from 0.5 to 1.8 m determined an increase in resin utilization efficiency (from 12% to 43%), resin productivity (from 3.4 to 7.6 g sorbed phenolics /kg resin ), and phenolics/COD enrichment factor (from 1.2 to 2.5). An axial dispersion model with nonequilibrium adsorption accurately interpreted the phenolic compounds and COD experimental curves.

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“…Macroporous resin has unique adsorption properties coupled with advantages such as high mechanical strength, resistance to acid and base, and ease of regeneration, and so it has been widely applied in the separation and purification of natural products . However, there have been few reports on its application as an SPE adsorbent .…”

Section: Resultsmentioning

confidence: 99%

Determination of polycyclic aromatic hydrocarbons in water samples by gas chromatography coupled to triple quadrupole tandem mass spectrometry using macroporous resin solid‐phase extraction

Xing

Wang

et al. 2018

J of Separation Science

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A method for the determination of 16 polycyclic aromatic hydrocarbons in water has been developed. First, we made a solid-phase extraction column. After this, the parameters affecting the efficacy of the experimental method were optimized, including appropriate selection of a solid-phase extraction column and cleanup conditions on columns. The separation was achieved by gas chromatography and detection with triple quadrupole tandem mass spectrometry. The method showed satisfactory linearity (R > 0.999) over the range assayed (0.01-1 μg/mL), and limits of quantification ranging from 0.0011 to 0.0199 μg/L. The recoveries ranged from 83 to 113%. The relative standard deviation is in the range 0.86-3.1%. The results indicated that this method had high selectivity and precision that was suitable for the simultaneous determination of 16 polycyclic aromatic hydrocarbons in water.

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Simultaneous purification of tea polyphenols and caffeine from discarded green tea by macroporous adsorption resins

Cited by 19 publications

References 37 publications

Design and preparation of porous polymer particles with polydopamine coating and selective enrichment for biomolecules

Design and preparation of porous polymer particles with polydopamine coating and selective enrichment for biomolecules

Batch and Continuous Flow Adsorption of Phenolic Compounds from Olive Mill Wastewater: A Comparison between Nonionic and Ion Exchange Resins

Determination of polycyclic aromatic hydrocarbons in water samples by gas chromatography coupled to triple quadrupole tandem mass spectrometry using macroporous resin solid‐phase extraction

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