Solid-phase extraction of tanshinones from Salvia Miltiorrhiza Bunge using ionic liquid-modified silica sorbents

Tian, Minglei; Yan, Hongyuan; Row, Kyung Ho

doi:10.1016/j.jchromb.2009.02.012

Cited by 107 publications

(45 citation statements)

References 33 publications

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“…Studies of ILs in analytical chemistry focused mainly on the following: ILs as solvents for extraction in conventional liquid-liquid extraction (LLE), microwave-assisted extraction (MAE), ultrasonicassisted extraction (UAE), liquid-phase microextraction (LPME) and solid-phase microextraction (SPME); as a mobile phase additive in high performance liquid chromatography (HPLC), capillary electrophoresis (CE) and countercurrent chromatography (CCC); and as a modifier of the sorbent or stationary phase in HPLC, SPE, gas chromatography (GC), and SPME [13][14][15][16][17][18][19][20][21][22]. ILs, as extraction solvents, can promote interactions between the analyte and solvent because of their unique chemical functional groups.…”

Section: Introductionmentioning

confidence: 99%

Application of ionic liquid for extraction and separation of bioactive compounds from plants

Tang

Tian

et al. 2012

Journal of Chromatography B

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Section: Introductionmentioning

confidence: 99%

Application of ionic liquid for extraction and separation of bioactive compounds from plants

Tang

Tian

et al. 2012

Journal of Chromatography B

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212

120

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“…In Fig. 3, the MI-IL-silica spectra exhibited an inconspicuous peak at a wavelength of 1,575 cm -1 , and the finger print region of the amide bands ranged from 1,500 to 1,600 cm -1 [34,35]. Therefore, ionic liquid groups were successfully synthesized on the surface of silica.…”

Section: Ft-ir Analysismentioning

confidence: 93%

SPE of Tanshinones from Salvia miltiorrhiza Bunge by using Imprinted Functionalized Ionic Liquid-Modified Silica

Tian

Row

2011

Chromatographia

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Ionic liquid-modified silica, with functional groups based on imidazole as the cation, was obtained. A molecular imprinting technique was introduced to form the order of functional groups. The selectivity of the obtained ionic liquid-modified silica was successfully used as a special imprinted sorbent in the solid-phase extraction to isolate cryptotanshinone, tanshinone I and tanshinone IIA from Salvia miltiorrhiza Bunge. Several washing and elution solvents with different polarities were evaluated. The ionic liquid-modified silica as the sorbent exhibited a higher selectivity than blank ionic liquid-modified silica, traditional silica and C 18 cartridges. A quantitative analysis was conducted by liquid chromatography with a C 18 column and methanol/water (75:25, v/v, containing 0.5% acetic acid) as the mobile phase. A good linearity was obtained from 0.5 9 10 -4 to 0.1 mg mL -1 (r 2 [ 0.99) with relative standard deviations that were less than 4.6%.

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“…The peak at 1593 cm À1 is attributable to imidazole groups [25,26] immobilized on the polymers. Comparison of 2880-3000 cm…”

Section: Procedures Of Spe and Preparation Of Natural Plant Extractmentioning

confidence: 99%

Separation of monosaccharides by solid‐phase extraction with ionic liquid‐modified microporous polymers

Tian

Row

2011

J of Separation Science

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Ionic liquid-modified porous polymers with large surface area and large amount of functional groups were developed and used in SPE to separate four monosaccharides. Adsorption isotherm showed that the sorbent with amino ionic liquid groups had the highest interaction with the target compounds. The mobile phase of acetonitrile/water 85:15 and 73:30 v/v can successfully separate the monosaccharides. The sorbent produced reproducible results and performed stably, demonstrating its potential applicability in the separation of extract from natural plant.

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Solid-phase extraction of tanshinones from Salvia Miltiorrhiza Bunge using ionic liquid-modified silica sorbents

Cited by 107 publications

References 33 publications

Application of ionic liquid for extraction and separation of bioactive compounds from plants

Application of ionic liquid for extraction and separation of bioactive compounds from plants

SPE of Tanshinones from Salvia miltiorrhiza Bunge by using Imprinted Functionalized Ionic Liquid-Modified Silica

Separation of monosaccharides by solid‐phase extraction with ionic liquid‐modified microporous polymers

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