Characterization of phenolic acids and flavonoids in dandelion (<i>Taraxacum officinale</i> WEB. ex WIGG.) root and herb by high‐performance liquid chromatography/electrospray ionization mass spectrometry

Schütz, Katrin; Kammerer, Dietmar R.; Carle, Reinhold; Schieber, Andreas

doi:10.1002/rcm.1767

Cited by 200 publications

(166 citation statements)

References 43 publications

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“…Therefore, the differences observed for antioxidant activity of the samples are related to the amount of phenolic compounds and not with the phenolic compounds profile, which is similar ( Table 3). Schütz et al (2005) also reported chicoric acids as the main phenolic compounds found in dandelion (Taraxacum officinale). Indeed, chicoric acids are relevant secondary metabolites in plants of the tribe Cichorieae (family Asteraceae), including genus Taraxacum or Lactuca, being used for taxonomic purposes (Schütz et al, 2005).…”

Section: Antioxidants Contributionmentioning

confidence: 92%

“…Schütz et al (2005) also reported chicoric acids as the main phenolic compounds found in dandelion (Taraxacum officinale). Indeed, chicoric acids are relevant secondary metabolites in plants of the tribe Cichorieae (family Asteraceae), including genus Taraxacum or Lactuca, being used for taxonomic purposes (Schütz et al, 2005). Williams et al (1996) and Gatto et al (2011), using different extraction and analysis methods, reported similar results on flowers and leaves of T. officinale.…”

Section: Antioxidants Contributionmentioning

confidence: 92%

“…The majority of reports found in literature is focused in a particular species, T. officinalis, and describe antioxidant properties (Hu &Kitts, 2003 and2005;Hudec et al, 2007;Jeon et al, 2008), nutritional value (Escudero, Arellano, Fernández, Albarracín, & Mucciarelli, 2003) and fatty acids (Liu, Howe, Zhou, Hocart, & Zhang, 2002). The same occurs regarding phenolic profile being flavonoid glycosides and hidroxycinammic acids, mainly chicoric acid, reported as the most abundant compounds (Williams, Goldstone, & Greenham, 1996;Gatto et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Nutritional composition, antioxidant activity and phenolic compounds of wild Taraxacum sect. Ruderalia

Días

Barros

Alves

et al. 2014

Food Research International

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Flowers and vegetative parts of wild Taraxacum identified as belonging to sect.Ruderalia were chemically characterized in nutritional composition, sugars, organic acids, fatty acids and tocopherols. Furthermore, the antioxidant potential and phenolic profiles were evaluated in the methanolic extracts, infusions and decoctions. The flowers gave higher content of sugars, tocopherols and flavonoids (mainly luteolin Ohexoside and luteolin), while the vegetative parts showed higher content of proteins and ash, organic acids, polyunsaturated fatty acids (PUFA) and phenolic acids (caffeic acid derivatives and especially chicoric acid). In general, vegetative parts gave also higher antioxidant activity, which could be related to the higher content in phenolic acids (R 2 =0.9964, 0.8444, 0.4969 and 0.5542 for 2,2-diphenyl-1-picrylhydrazyl, reducing power, β-carotene bleaching inhibition and thiobarbituric acid reactive substances assays, respectively). Data obtained demonstrated that wild plants like Taraxacum, although not being a common nutritional reference, can be used in an alimentary base as a source of bioactive compounds, namely antioxidants.

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Section: Antioxidants Contributionmentioning

confidence: 92%

Section: Antioxidants Contributionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Nutritional composition, antioxidant activity and phenolic compounds of wild Taraxacum sect. Ruderalia

Días

Barros

Alves

et al. 2014

Food Research International

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“…Taraxacum officinale (common dandelion) and Taraxacum kok-saghyz (Russian dandelion) are members of the Asteraceae and therefore possess articulated laticifers (Esau, 1965;Evert, 2006) that secrete a latex rich in polyphenols (Schü tz et al, 2005; C. Schulze Gronover, unpublished data). T. kok-saghyz latex is a good source of high-molecular-weight rubber (Mooibroek and Cornish, 2000;Bushman et al, 2006) and was investigated as an alternative to H. brasiliensis during World War II, when rubber supplies to Europe and the United States were interrupted.…”

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confidence: 99%

Polyphenoloxidase Silencing Affects Latex Coagulation in Taraxacum Species

et al. 2009

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Latex is the milky sap that is found in many different plants. It is produced by specialized cells known as laticifers and can comprise a mixture of proteins, carbohydrates, oils, secondary metabolites, and rubber that may help to prevent herbivory and protect wound sites against infection. The wound-induced browning of latex suggests that it contains one or more phenoloxidizing enzymes. Here, we present a comprehensive analysis of the major latex proteins from two dandelion species, Taraxacum officinale and Taraxacum kok-saghyz, and enzymatic studies showing that polyphenoloxidase (PPO) is responsible for latex browning. Electrophoretic analysis and amino-terminal sequencing of the most abundant proteins in the aqueous latex fraction revealed the presence of three PPO-related proteins generated by the proteolytic cleavage of a single precursor (pre-PPO). The laticifer-specific pre-PPO protein contains a transit peptide that can target reporter proteins into chloroplasts when constitutively expressed in dandelion protoplasts, perhaps indicating the presence of structures similar to plastids in laticifers, which lack genuine chloroplasts. Silencing the PPO gene by constitutive RNA interference in transgenic plants reduced PPO activity compared with wild-type controls, allowing T. kok-saghyz RNA interference lines to expel four to five times more latex than controls. Latex fluidity analysis in silenced plants showed a strong correlation between residual PPO activity and the coagulation rate, indicating that laticifer-specific PPO plays a major role in latex coagulation and wound sealing in dandelions. In contrast, very little PPO activity is found in the latex of the rubber tree Hevea brasiliensis, suggesting functional divergence of latex proteins during plant evolution.

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“…It provides a powerful approach to characterize and identify a variety of polar and thermally labile compounds such as flavonoids in crude extracts of plants (Wang et al 2004;Schutz and others 2005;Tai et al 2006;Guo et al 2007;Ren et al 2007;Zheng et al 2007;Avul et al 2008;Liu et al 2008). Various hyphenated and hybrid mass spectrometers have now become widely adopted, and, among them, TimeOf-Flight (TOF) MS and its hybrid or in combination use with Tandem Mass Spectrometry (MS/MS) have proven to be very powerful tools for the structural characterization of natural compounds in view of their complementary capacity to provide multistage fragmentations and accurate mass measurements for precise elemental compositions of molecular ions and subsequent product ions (Schutz et al 2005;Ferrer et al 2004;Yokosuka et al 2006;Zhu et al 2007). Recently, Liquid Chromatography Electrospray Ionization source in combination with hybrid Ion Trap and high-resolution Time-of-flight Mass Spectrometry (LC-(ESI)-IT-TOF/MS) has been successful in the identification and characterization of compounds in various fields Gao et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Rapid Identification and Detection of Flavonoids Compounds From Bamboo Leaves by Lc-(Esi)-It-Tof/MS

Lv¹,

Dong²,

Zhang³

2012

BioResources

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This paper provides an applicable approach to identifying flavonoid compounds from bamboo leaves extracts, based on the use of the powerful Liquid Chromatography Electrospray Ionization source in combination with hybrid Ion Trap and high-resolution Time-of-flight Mass Spectrometry (LC-(ESI)-IT-TOF/MS). The strategy involves four procedural steps including searching flavonoid components based on an ultraviolet spectrum scan, getting the accurate mass of flavonoid components parent ion, retrieving the corresponding formula by software, and speculating as to the chemical structure according to mass spectrum decomposition rules. The presently developed methodology has been well proven to be useful and valuable by successful application to the identification of flavonoid components from Dendrocalamopsis oldham leaves. All of the 13 flavonoid components detected have been successfully identified by this approach, except that it failed to confirm 3 flavonoid component chemical structures. The calibration curves of two flavonoid components (orientin and vitexin) that had been identified in bamboo leaves showed a good linear fit (R 2 ≥ 0.9998) in the concentration range of 6.25 to 200 mg/L. The limits of detection (LOD) were less 0.02 mg/L (S/N=3), and the estimated limits of quantification (LOQ) were less 0.06 mg/L (S/N=10). Intra-and inter-day relative standard deviations were less than 1.04 and 1.82%, respectively.

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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

Cited by 200 publications

References 43 publications

Nutritional composition, antioxidant activity and phenolic compounds of wild Taraxacum sect. Ruderalia

Nutritional composition, antioxidant activity and phenolic compounds of wild Taraxacum sect. Ruderalia

Polyphenoloxidase Silencing Affects Latex Coagulation in Taraxacum Species

Rapid Identification and Detection of Flavonoids Compounds From Bamboo Leaves by Lc-(Esi)-It-Tof/MS

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