Synthesis of polyethylene glycol functional bonded silica gel for selective recognition and separation of α-cyclodextrin

Zheng, Xinying; Qin, Yang; Meng, Xiaobing; Jin, Zhengyu; Fan, Liuping; Wang, Jinpeng

doi:10.1016/j.chroma.2021.461917

Cited by 7 publications

(3 citation statements)

References 43 publications

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“…From the data, a weight loss of 1.04% for the material was observed in the range of 30–61.80 °C due to water evaporation. 56 A weight loss of 3.94% observed in the range of 61.80–275.43 °C was attributed to the loss of boronic group, which was higher than the boiling point of phenylboronic acid (265.9 °C). 57 There was a weight loss of 9.18% in the range of 275.43–460.64 °C which may be attributed to the degradation of decomposition of the amino-propyl group on the surface.…”

Section: Resultsmentioning

confidence: 95%

Preparation of a phenylboronic acid and aldehyde bi-functional group modified silica absorbent and applications in removing Cr(vi) and reducing to Cr(iii)

et al. 2023

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Section: Resultsmentioning

confidence: 95%

Preparation of a phenylboronic acid and aldehyde bi-functional group modified silica absorbent and applications in removing Cr(vi) and reducing to Cr(iii)

et al. 2023

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“…The TGA curve of SiO 2 -NH 2 -FPBA is shown in Figure 1g. A small weight loss of 0.94% for the material was found due to the evaporation of water [35]. At slightly greater than the boiling point of phenylboronic acid (265.9 • C), a weight loss of 3.16% at 286.51 • C was produced, presumably due to phenylboronic acid degradation.…”

Section: Characterizationmentioning

confidence: 93%

Phenylboronic Acid and Amino Bifunctional Modified Adsorbent for Quickly Separating Phenolic Acids from Crude Extract of Clerodendranthus spicatus and Evaluation of Their Antioxidant and Hypoglycemic Activities

Cheng,

Song,

Zhang

et al. 2023

Molecules

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A novel phenylboronic acid and amino bifunctional modified silica gel (SiO2-NH2-FPBA) was prepared, which was 30–80 μm, had a pore size of 8.69 nm, a specific surface area of 206.89 m2/g, was stable at low temperature, and contained 0.4793 mmol/g of the phenylboronic acid group and 1.6377 mmol/g of the amino group. It was used to develop a rapid separation method for phenolic acids. The results showed that it could adsorb 93.64 mg/g caffeic acid, 89.35 mg/g protocatechuic acid and 79.66 mg/g gallic acid. The adsorption process was consistent with the pseudo-second-order model (R2 > 0.99), and fitted the Langmuir isotherm model well (R2 > 0.99). CH3COOH could effectively desorb phenolic acids (>90%) and did not destroy their structures. When SiO2-NH2-FPBA was added to crude extract of Clerodendranthus spicatus, 93.24% of the phenolic acids could be captured, and twenty-two kinds of phenolic acids were identified by Q Exactive HF LC-MS. Furthermore, the isolated phenolic acids from Clerodendranthus spicatus possessed great DPPH, ABTS, and hydroxyl radicals scavenging activities and ferric reducing power. They also demonstrated effective inhibition of α-amylase and α-glucosidase activities (IC50 = 110.63 ± 3.67 μg/mL and 64.76 ± 0.30 μg/mL, respectively). The findings indicate that SiO2-NH2-FPBA has significant potential in practical applications of separating active constituents from natural resources.

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“…Silica gel, resin, and polyamide are commonly used as sample pretreatment fillers due to their low cost and high separation selectivity [21,22]. Currently, several researchers have shown the viability of silica gel in the separation of steroids [23,24].…”

Section: Introductionmentioning

confidence: 99%

An Integrated Chromatographic Strategy for the Large-Scale Extraction of Ergosterol from Tulasnellaceae sp.

Wang

Zhang

et al. 2022

Separations

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A reliable chromatographic strategy is crucial for the extraction of target compounds from natural sources as it is related to the preparation efficiency, as well as the purity of the compounds. In this study, medium-pressure normal-phase liquid chromatography and high-pressure reverse-phase liquid chromatography were combined to prepare and purify ergosterol from Tulasnellaceae sp. of Gymnadenia orchidis. First, Tulasnellaceae sp. was extracted three times (2.0 L and 2 h each time) with ethyl acetate, and the 6.0 L of extract solution was concentrated under reduced pressure to yield 2.2 g of crude sample. Then, the crude sample was pretreated utilizing silica gel medium-pressure liquid chromatography to enrich the target ingredient (586.0 mg). Finally, high-pressure reversed-phase liquid chromatography was used to purify the target compound, and the compound was characterized as ergosterol (purity > 95%) using spectral data. Overall, the simple and reproducible integrated chromatographic strategy developed in this study has the potential for the large-scale purification of steroids for laboratory and even industrial research. To the best of our knowledge, this is also the first report of ergosterol in Tulasnellaceae sp.

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Synthesis of polyethylene glycol functional bonded silica gel for selective recognition and separation of α-cyclodextrin

Cited by 7 publications

References 43 publications

Preparation of a phenylboronic acid and aldehyde bi-functional group modified silica absorbent and applications in removing Cr(vi) and reducing to Cr(iii)

Preparation of a phenylboronic acid and aldehyde bi-functional group modified silica absorbent and applications in removing Cr(vi) and reducing to Cr(iii)

Phenylboronic Acid and Amino Bifunctional Modified Adsorbent for Quickly Separating Phenolic Acids from Crude Extract of Clerodendranthus spicatus and Evaluation of Their Antioxidant and Hypoglycemic Activities

An Integrated Chromatographic Strategy for the Large-Scale Extraction of Ergosterol from Tulasnellaceae sp.

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