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Andreas Schieber - One of the best experts on this subject based on the ideXlab platform.
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separation and quantification of inulin in selected artichoke cynara scolymus l cultivars and Dandelion taraxacum officinale web ex wigg roots by high performance anion exchange chromatography with pulsed amperometric detection
Biomedical Chromatography, 2006Co-Authors: Katrin Schutz, Erna Muks, Reinhold Carle, Andreas SchieberAbstract:The profile of fructooligosaccharides and fructopolysaccharides in artichoke heads and Dandelion roots was investigated. For this purpose, a suitable method for high-performance anion exchange chromatography with pulsed amperometic detection was developed. The separation of monomers, oligomers and polymers up to a chain length of 79 sugar residues was achieved in one single run. Glucose, fructose, sucrose and individual fructooligosaccharides (kestose, nystose, fructofuranosylnystose) were quantified in six different artichoke cultivars and in Dandelion roots. The contents ranged from 12.9 g/kg DM to 71.7 g/kg DM for glucose, from 15.8 g/kg DM to 67.2 g/kg DM for fructose, and from 16.8 g/kg DM to 55.2 g/kg DM for sucrose in the artichoke heads. Kestose was the predominant fructooligosaccharide, followed by nystose and fructofuranosylnystose. In four cultivars fructofuranosylnystose was only detectable in traces and reached its maximum value of 3.6 g/kg DM in the cultivar Le Castel. Furthermore, an average degree of polymerization of 5.3 to 16.7 was calculated for the individual artichoke cultivars, which is noticeably lower than hitherto reported. In contrast, the contents of kestose, nystose and fructofuranosylnystose in Dandelion root exceeded that of artichoke, reflecting the short chain characteristic of the inulin, which was confirmed by chromatographic analysis. Copyright © 2006 John Wiley & Sons, Ltd.
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separation and quantification of inulin in selected artichoke cynara scolymus l cultivars and Dandelion taraxacum officinale web ex wigg roots by high performance anion exchange chromatography with pulsed amperometric detection
Biomedical Chromatography, 2006Co-Authors: Katrin Schutz, Erna Muks, Reinhold Carle, Andreas SchieberAbstract:The profile of fructooligosaccharides and fructopolysaccharides in artichoke heads and Dandelion roots was investigated. For this purpose, a suitable method for high-performance anion exchange chromatography with pulsed amperometic detection was developed. The separation of monomers, oligomers and polymers up to a chain length of 79 sugar residues was achieved in one single run. Glucose, fructose, sucrose and individual fructooligosaccharides (kestose, nystose, fructofuranosylnystose) were quantified in six different artichoke cultivars and in Dandelion roots. The contents ranged from 12.9 g/kg DM to 71.7 g/kg DM for glucose, from 15.8 g/kg DM to 67.2 g/kg DM for fructose, and from 16.8 g/kg DM to 55.2 g/kg DM for sucrose in the artichoke heads. Kestose was the predominant fructooligosaccharide, followed by nystose and fructofuranosylnystose. In four cultivars fructofuranosylnystose was only detectable in traces and reached its maximum value of 3.6 g/kg DM in the cultivar Le Castel. Furthermore, an average degree of polymerization of 5.3 to 16.7 was calculated for the individual artichoke cultivars, which is noticeably lower than hitherto reported. In contrast, the contents of kestose, nystose and fructofuranosylnystose in Dandelion root exceeded that of artichoke, reflecting the short chain characteristic of the inulin, which was confirmed by chromatographic analysis.
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characterization of phenolic acids and flavonoids in Dandelion taraxacum officinale web ex wigg root and herb by high performance liquid chromatography electrospray ionization mass spectrometry
Rapid Communications in Mass Spectrometry, 2005Co-Authors: Katrin Schutz, Reinhold Carle, Dietmar R Kammerer, Andreas SchieberAbstract:Phenolic acids and flavonoids were extracted from a Dandelion (Taraxacum officinale WEB. ex WIGG.) root and herb juice and characterized by high-performance liquid chromatography/electrospray ionization mass spectrometry. Among the 43 compounds detected, 5 mono- and dicaffeoylquinic acids, 5 tartaric acid derivatives, 8 flavone and 8 flavonol glycosides were characterized based on their UV spectra and their fragmentation patterns in collision-induced dissociation experiments. The predominant compound was chicoric acid (dicaffeoyltartaric acid). Furthermore, several caffeoylquinic acid isomers were distinguished in Dandelion extracts for the first time by their specific mass spectral data. The present study reveals that even more quercetin glycosides were found in Dandelion than hitherto assumed. The occurrence of di- and triglycosylated flavonoids in particular has not yet been described. This paper marks the first report on HPLC-DAD/ESI-MSn investigations of phenolic compounds in Dandelion.
Katrin Schutz - One of the best experts on this subject based on the ideXlab platform.
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separation and quantification of inulin in selected artichoke cynara scolymus l cultivars and Dandelion taraxacum officinale web ex wigg roots by high performance anion exchange chromatography with pulsed amperometric detection
Biomedical Chromatography, 2006Co-Authors: Katrin Schutz, Erna Muks, Reinhold Carle, Andreas SchieberAbstract:The profile of fructooligosaccharides and fructopolysaccharides in artichoke heads and Dandelion roots was investigated. For this purpose, a suitable method for high-performance anion exchange chromatography with pulsed amperometic detection was developed. The separation of monomers, oligomers and polymers up to a chain length of 79 sugar residues was achieved in one single run. Glucose, fructose, sucrose and individual fructooligosaccharides (kestose, nystose, fructofuranosylnystose) were quantified in six different artichoke cultivars and in Dandelion roots. The contents ranged from 12.9 g/kg DM to 71.7 g/kg DM for glucose, from 15.8 g/kg DM to 67.2 g/kg DM for fructose, and from 16.8 g/kg DM to 55.2 g/kg DM for sucrose in the artichoke heads. Kestose was the predominant fructooligosaccharide, followed by nystose and fructofuranosylnystose. In four cultivars fructofuranosylnystose was only detectable in traces and reached its maximum value of 3.6 g/kg DM in the cultivar Le Castel. Furthermore, an average degree of polymerization of 5.3 to 16.7 was calculated for the individual artichoke cultivars, which is noticeably lower than hitherto reported. In contrast, the contents of kestose, nystose and fructofuranosylnystose in Dandelion root exceeded that of artichoke, reflecting the short chain characteristic of the inulin, which was confirmed by chromatographic analysis. Copyright © 2006 John Wiley & Sons, Ltd.
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separation and quantification of inulin in selected artichoke cynara scolymus l cultivars and Dandelion taraxacum officinale web ex wigg roots by high performance anion exchange chromatography with pulsed amperometric detection
Biomedical Chromatography, 2006Co-Authors: Katrin Schutz, Erna Muks, Reinhold Carle, Andreas SchieberAbstract:The profile of fructooligosaccharides and fructopolysaccharides in artichoke heads and Dandelion roots was investigated. For this purpose, a suitable method for high-performance anion exchange chromatography with pulsed amperometic detection was developed. The separation of monomers, oligomers and polymers up to a chain length of 79 sugar residues was achieved in one single run. Glucose, fructose, sucrose and individual fructooligosaccharides (kestose, nystose, fructofuranosylnystose) were quantified in six different artichoke cultivars and in Dandelion roots. The contents ranged from 12.9 g/kg DM to 71.7 g/kg DM for glucose, from 15.8 g/kg DM to 67.2 g/kg DM for fructose, and from 16.8 g/kg DM to 55.2 g/kg DM for sucrose in the artichoke heads. Kestose was the predominant fructooligosaccharide, followed by nystose and fructofuranosylnystose. In four cultivars fructofuranosylnystose was only detectable in traces and reached its maximum value of 3.6 g/kg DM in the cultivar Le Castel. Furthermore, an average degree of polymerization of 5.3 to 16.7 was calculated for the individual artichoke cultivars, which is noticeably lower than hitherto reported. In contrast, the contents of kestose, nystose and fructofuranosylnystose in Dandelion root exceeded that of artichoke, reflecting the short chain characteristic of the inulin, which was confirmed by chromatographic analysis.
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characterization of phenolic acids and flavonoids in Dandelion taraxacum officinale web ex wigg root and herb by high performance liquid chromatography electrospray ionization mass spectrometry
Rapid Communications in Mass Spectrometry, 2005Co-Authors: Katrin Schutz, Reinhold Carle, Dietmar R Kammerer, Andreas SchieberAbstract:Phenolic acids and flavonoids were extracted from a Dandelion (Taraxacum officinale WEB. ex WIGG.) root and herb juice and characterized by high-performance liquid chromatography/electrospray ionization mass spectrometry. Among the 43 compounds detected, 5 mono- and dicaffeoylquinic acids, 5 tartaric acid derivatives, 8 flavone and 8 flavonol glycosides were characterized based on their UV spectra and their fragmentation patterns in collision-induced dissociation experiments. The predominant compound was chicoric acid (dicaffeoyltartaric acid). Furthermore, several caffeoylquinic acid isomers were distinguished in Dandelion extracts for the first time by their specific mass spectral data. The present study reveals that even more quercetin glycosides were found in Dandelion than hitherto assumed. The occurrence of di- and triglycosylated flavonoids in particular has not yet been described. This paper marks the first report on HPLC-DAD/ESI-MSn investigations of phenolic compounds in Dandelion.
Kaisheng Zhang - One of the best experts on this subject based on the ideXlab platform.
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a novel biomimetic Dandelion structure inspired carbon nanotube coating with sulfur as a lithium sulfur battery cathode
Nanotechnology, 2019Co-Authors: Jinyun Liu, Wen Zhang, Yu Chen, Ping Zhou, Kaisheng ZhangAbstract:Lithium-sulfur (Li-S) batteries have attracted considerable attention because of their high theoretical energy density. However, poor conductivity and a large volume change in S during cycling, together with a shuttle effect of polysulfides, severely restrict the battery performance, and remain a great challenge. Herein, inspired by a natural Dandelion structure, we present a novel biomimetic S-coated carbon nanotube composite consisting of Dandelion-like three-dimensional carbon nanotubes coated with S particles on the surface. Carbon nanotubes provide high-speed electron transfer pathways for S during cycling, while the special Dandelion-like morphology provides a suitable environment for accommodating the volume change in S upon charge-discharge. The Dandelion-like S-coated carbon nanotube-based Li-S batteries exhibit a stable capacity exceeding 760 mAh g-1 after 500 cycles at 0.1 C, along with a Coulombic efficiency as high as 99.9%. Even under repeated rounds of rate-performance measurements, and cycling at different charge versus discharge rates, the batteries retain high capacities and good recovery capabilities. In addition, the proportion of capacitive contribution in the overall capacity is high, indicating a good reversible capacity provided by the composite.
Reinhold Carle - One of the best experts on this subject based on the ideXlab platform.
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separation and quantification of inulin in selected artichoke cynara scolymus l cultivars and Dandelion taraxacum officinale web ex wigg roots by high performance anion exchange chromatography with pulsed amperometric detection
Biomedical Chromatography, 2006Co-Authors: Katrin Schutz, Erna Muks, Reinhold Carle, Andreas SchieberAbstract:The profile of fructooligosaccharides and fructopolysaccharides in artichoke heads and Dandelion roots was investigated. For this purpose, a suitable method for high-performance anion exchange chromatography with pulsed amperometic detection was developed. The separation of monomers, oligomers and polymers up to a chain length of 79 sugar residues was achieved in one single run. Glucose, fructose, sucrose and individual fructooligosaccharides (kestose, nystose, fructofuranosylnystose) were quantified in six different artichoke cultivars and in Dandelion roots. The contents ranged from 12.9 g/kg DM to 71.7 g/kg DM for glucose, from 15.8 g/kg DM to 67.2 g/kg DM for fructose, and from 16.8 g/kg DM to 55.2 g/kg DM for sucrose in the artichoke heads. Kestose was the predominant fructooligosaccharide, followed by nystose and fructofuranosylnystose. In four cultivars fructofuranosylnystose was only detectable in traces and reached its maximum value of 3.6 g/kg DM in the cultivar Le Castel. Furthermore, an average degree of polymerization of 5.3 to 16.7 was calculated for the individual artichoke cultivars, which is noticeably lower than hitherto reported. In contrast, the contents of kestose, nystose and fructofuranosylnystose in Dandelion root exceeded that of artichoke, reflecting the short chain characteristic of the inulin, which was confirmed by chromatographic analysis. Copyright © 2006 John Wiley & Sons, Ltd.
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separation and quantification of inulin in selected artichoke cynara scolymus l cultivars and Dandelion taraxacum officinale web ex wigg roots by high performance anion exchange chromatography with pulsed amperometric detection
Biomedical Chromatography, 2006Co-Authors: Katrin Schutz, Erna Muks, Reinhold Carle, Andreas SchieberAbstract:The profile of fructooligosaccharides and fructopolysaccharides in artichoke heads and Dandelion roots was investigated. For this purpose, a suitable method for high-performance anion exchange chromatography with pulsed amperometic detection was developed. The separation of monomers, oligomers and polymers up to a chain length of 79 sugar residues was achieved in one single run. Glucose, fructose, sucrose and individual fructooligosaccharides (kestose, nystose, fructofuranosylnystose) were quantified in six different artichoke cultivars and in Dandelion roots. The contents ranged from 12.9 g/kg DM to 71.7 g/kg DM for glucose, from 15.8 g/kg DM to 67.2 g/kg DM for fructose, and from 16.8 g/kg DM to 55.2 g/kg DM for sucrose in the artichoke heads. Kestose was the predominant fructooligosaccharide, followed by nystose and fructofuranosylnystose. In four cultivars fructofuranosylnystose was only detectable in traces and reached its maximum value of 3.6 g/kg DM in the cultivar Le Castel. Furthermore, an average degree of polymerization of 5.3 to 16.7 was calculated for the individual artichoke cultivars, which is noticeably lower than hitherto reported. In contrast, the contents of kestose, nystose and fructofuranosylnystose in Dandelion root exceeded that of artichoke, reflecting the short chain characteristic of the inulin, which was confirmed by chromatographic analysis.
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characterization of phenolic acids and flavonoids in Dandelion taraxacum officinale web ex wigg root and herb by high performance liquid chromatography electrospray ionization mass spectrometry
Rapid Communications in Mass Spectrometry, 2005Co-Authors: Katrin Schutz, Reinhold Carle, Dietmar R Kammerer, Andreas SchieberAbstract:Phenolic acids and flavonoids were extracted from a Dandelion (Taraxacum officinale WEB. ex WIGG.) root and herb juice and characterized by high-performance liquid chromatography/electrospray ionization mass spectrometry. Among the 43 compounds detected, 5 mono- and dicaffeoylquinic acids, 5 tartaric acid derivatives, 8 flavone and 8 flavonol glycosides were characterized based on their UV spectra and their fragmentation patterns in collision-induced dissociation experiments. The predominant compound was chicoric acid (dicaffeoyltartaric acid). Furthermore, several caffeoylquinic acid isomers were distinguished in Dandelion extracts for the first time by their specific mass spectral data. The present study reveals that even more quercetin glycosides were found in Dandelion than hitherto assumed. The occurrence of di- and triglycosylated flavonoids in particular has not yet been described. This paper marks the first report on HPLC-DAD/ESI-MSn investigations of phenolic compounds in Dandelion.
Haram Jung - One of the best experts on this subject based on the ideXlab platform.
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extraction of cage like sporopollenin exine capsules from Dandelion pollen grains
Scientific Reports, 2018Co-Authors: Jae Hyeon Park, Quynh Anh Pham, Raghavendra C Mundargi, Michael G Potroz, Haram JungAbstract:Pollen-based microcapsules such as hollow sporopollenin exine capsules (SECs) have emerged as excellent drug delivery and microencapsulation vehicles. To date, SECs have been extracted primarily from a wide range of natural pollen species possessing largely spherical geometries and uniform surface features. Nonetheless, exploring pollen species with more diverse architectural features could lead to new application possibilities. One promising class of candidates is Dandelion pollen grains, which possess architecturally intricate, cage-like microstructures composed of robust sporopollenin biopolymers. Here, we report the successful extraction and macromolecular loading of Dandelion SECs. Preservation of SEC morphology and successful removal of proteinaceous materials was evaluated using scanning electron microscopy (SEM), matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry, elemental CHN analysis, dynamic image particle analysis (DIPA) and confocal laser scanning microscopy (CLSM). Among the tested processing schemes, acidolysis using 85% (v/v) phosphoric acid refluxed at 70 °C for 5 hours yielded an optimal balance of intact particle yield, protein removal, and preservation of cage-like microstructure. For proof-of-concept loading, bovine serum albumin (BSA) was encapsulated within the Dandelion SECs with high efficiency (32.23 ± 0.33%). Overall, our findings highlight how hollow microcapsules with diverse architectural features can be readily prepared and utilized from plant-based materials.
