Interspecific and intraspecific variation of phenolics in the genus Equisetum subgenus Equisetum

Veit, Markus; Beckert, Cornelia; Höhne, Cornelia; Bauer, Katja; Geiger, Hans

doi:10.1016/0031-9422(94)00658-g

Cited by 90 publications

(82 citation statements)

References 21 publications

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“…Concerning the HPLC-DAD phenolic profiles, the results found for the analyzed species extends the groups of plants for which phenolic profiles have a species-specific condition, corroborating the proposal made by some authors on the relevance of phenolic profiles as important specific chemomarkers (Veit et al, 1995). These same authors and others (Almaraz-Abarca et al, 2013) have pointed out that under variable environmental conditions, the major changes occur in the concentrations of the individual phenolic compounds, keeping stable the qualitative composition.…”

Section: )supporting

confidence: 87%

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Foliar phenolic compounds of ten wild species of Verbenacea as antioxidants and specific chemomarkers

et al. 2017

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The family Verbenaceae hosts important species used in traditional medicine of many countries. The taxonomic controversies concerning the specific delimitation of several of its species make it difficult to guarantee the botanical origin of herbal preparations based on species of this family. To contribute to the development of both specific chemomarkers and a quality control tool to authenticate the botanical origin of herbal preparations of Verbenacea species, we determined the foliar HPLC-DAD phenolic profiles and the antioxidant properties of 10 wild species of this family occurring in Mexico. The contents of phenols and flavonoids varied significantly among species. Priva mexicana showed the highest levels of total phenolics (53.4 mg g -1 dry tissue) and Verbena carolina had the highest levels of flavonoids (17.89 mg g -1 dry tissue). Relevant antioxidant properties revealed by antiradical and reducing power were found for the analyzed species. These properties varied significantly in a species-dependent manner. The phenolic compounds accumulated were flavones and phenolic acids. Flavones were the only type of flavonoids found. The results of a cluster analysis showed that the compounds were accumulated in species-specific profiles. The phenolic profiles are proposed as valuable chemomarkers that can become a useful tool for the quality control concerning the botanical origin of herbal medicinal preparations based on the species analyzed. In addition, phenolic profiles could contribute importantly to solve the taxonomic controversies concerning species delimitation in the family Verbenaceae.Keywords: Verbenacea, antioxidant activity, chemomarkers, flavones, phenolic profiles. Compostos fenólicos das folhas de dez especies selvagem de Verbenaceae como antioxidantes e quimiomarcadores específicos ResumoA família Verbenaceae compreende importantes espécies utilizadas na medicina popular de muitos países. As dificuldades taxonômicas relativas à delimitação específica de muitas das suas espécies face difícil a verificar a origem botânico das preparações herbales baseadas nas espécies desta família. Para fazer uma contribuição ao desenvolvimento de indicadores taxonômicos e dum método de controle de qualidade para verificar a origem botânico de preparações herbales das espécies de Verbenaceae, os perfis fenólicos, obtidos pares HPLC-DAD, e as atividades antioxidantes das folhas de 10 espécies selvagens Mexicanas desta família foram determinados. Os conteúdos dos compostos fenólicos totais e dos flavonoides foram significativamente diferentes entre as espécies. Priva mexicana apresentou a maior quantidade de compostos fenólicos totais (53.4 mg g -1 amostra seca) e Verbena carolina apresentou a maior quantidade de flavonoides (17.89 mg g -1 amostra seca). Verifica-se importantes propriedades antioxidantes, como os resultados dos ensaios da capacidade antiradical e do poder redutor indicaram. As propriedades antioxidantes foram significativamente diferentes entre as espécies. Verificou-se que os compostos fe...

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Section: )supporting

confidence: 87%

“…For several groups of plants, profiles of these compounds have been reported as worthy chemomarkers because they were species-specific, like Equisetum (Veit et al, 1995), Pinus (Almaraz-Abarca et al, 2006), and Salvia (Kharazian, 2014). The species-specific condition of phenolic profiles could be of taxonomic relevance.…”

Section: Introductionmentioning

confidence: 99%

Foliar phenolic compounds of ten wild species of Verbenacea as antioxidants and specific chemomarkers

et al. 2017

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“…The accumulation of flavonoids, and in general of any phenolic compound, in the different plant species is strongly affected by environmental conditions like UV radiation and water supply, causing quantitative variations while the patterns of accumulated phenolics remained stable (Veit et al, 1995). The developmental conditions, like the maturation process also have effects on the accumulations of phenols (Fu et al, 2009).…”

Section: Flavonoid Contentmentioning

confidence: 99%

Flavonoid composition and antioxidant capacity of the edible flowers ofAgave durangensis(Agavaceae)

Barriada-Bernal

Almaraz-Abarca

Delgado-Alvarado

et al. 2013

CyTA - Journal of Food

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The antioxidant properties and the flavonoid composition of extracts of different hydrophobicity prepared from the entire edible flowers of Agave durangensis were evaluated. Separately, total extracts of tepals and anthers-pollen were analyzed in the same manner. The high performance liquid chromatography with photodiode array detection (HPLC-DAD) analysis revealed a total of eight flavonols (five quercetin glycosides and three kaempferol glycosides), varying in number and concentration in the different extracts. The total extracts of the entire flowers showed the highest flavonoid content (1210.4 µg/g dry extract) and the most complex flavonoid profile (eight compounds). All the extracts showed important antioxidant activity, which was not evidently associated with their flavonoid content. The total extracts of tepals showed the highest antioxidant properties (total antioxidant capacity, free radical scavenging activity, and iron reducing capacity: 30.2 mg ascorbic acid equivalents, EC 50 = 0.074 µg/mL, and IC 50 = 43.28 µg/mL, respectively). The flowers of A. durangensis represent an important source of antioxidant flavonols.Keywords: Agave durangensis; edible flowers; flavonoid profiles; antioxidant capacity; flavonol glycosides Se evaluaron las propiedades antioxidantes y composición fenólica de extractos de diferente hidrofobicidad de flores comestibles enteras de Agave durangensis. Separadamente, se analizaron extractos crudos de tépalos y anteras-polen. El análisis de HPLC-DAD reveló en total ocho flavonoles (cinco glicósidos de quercetina y tres glicósidos de canferol), que variaron en número y concentración en los extractos. Los extractos totales de las flores enteras tuvieron el contenido más alto de flavonoides (1210,4 µg/g extracto seco) y el perfil de flavonoides más complejo (ocho compuestos). Todos los extractos mostraron importante actividad antioxidante, no claramente asociada al contenido de flavonoides. Los extractos crudos de tépalos mostraron las propiedades antioxidantes más altas (capacidad antioxidante total, capacidad bloqueadora de radicales libres, y capacidad reductora de fierro: 30,2 mg de equivalentes de ácido ascórbico, EC 50 = 0,074 µg/mL, e IC 50 = 43,28 µg/mL, respectivamente). Las flores de A. durangensis representan una fuente importante de flavonoles antioxidantes.

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“…They are also used to treat inflammation and skin disorders and are believed to possess antimicrobial properties (Milovanovic et al 2007). Their phytochemical profile revealed the presence of silicic acid, flavonoids and manganese (Veit et al 1995).…”

Section: Introductionmentioning

confidence: 99%

Antibacterial, antioxidant and anti-proliferative properties and zinc content of five south Portugal herbs

Nunes

Paśko

Tyszka-Czochara

et al. 2016

Pharmaceutical Biology

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Context: Crataegus monogyna L. (Rosaceae) (CM), Equisetum telmateia L. (Equisataceae) (ET), Geranium purpureum Vil. (Geraniaceae) (GP), Mentha suaveolens Ehrh. (Lamiaceae) (MS), and Lavandula stoechas L. spp. luisieri (Lamiaceae) (LS) are all medicinal. Objective: To evaluate the antioxidant, antiproliferative and antimicrobial activities of plant extracts and quantify individual phenolics and zinc. Material and methods: Aerial part extracts were prepared with water (W), ethanol (E) and an 80% mixture (80EW). Antioxidant activity was measured with TAA, FRAP and RP methods. Phenolics were quantified with a HPLC. Zinc was quantified using voltammetry. Antibacterial activity (after 48 h) was tested using Enterococcus faecalis, Bacillus cereus, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and Listeria monocytogenes. Antiproliferative activity (after 24 h) was tested using HEP G2 cells and fibroblasts. Results: Solvents influenced results; the best were E and 80EW. GP had the highest antioxidant activity (TAA and FRAP of 536.90 mg AAE/g dw and 783.48 mg TE/g dw, respectively). CM had the highest zinc concentration (37.21 mg/kg) and phenolic variety, with neochlorogenic acid as the most abundant (92.91 mg/100 g dw). LS was rich in rosmarinic acid (301.71 mg/100 g dw). GP and LS inhibited the most microorganisms: B. cereus, E. coli and S. aureus. GP also inhibited E. faecalis. CM had the lowest MIC: 5830 lg/mL. The antibacterial activity is explained by the phenolics present. LS and CM showed the most significant anti-proliferative activity, which is explained by their zinc content. Conclusion: The most promising plants for further studies are CM, LS and GP.ARTICLE HISTORY

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Interspecific and intraspecific variation of phenolics in the genus Equisetum subgenus Equisetum

Cited by 90 publications

References 21 publications

Foliar phenolic compounds of ten wild species of Verbenacea as antioxidants and specific chemomarkers

Foliar phenolic compounds of ten wild species of Verbenacea as antioxidants and specific chemomarkers

Flavonoid composition and antioxidant capacity of the edible flowers ofAgave durangensis(Agavaceae)

Antibacterial, antioxidant and anti-proliferative properties and zinc content of five south Portugal herbs

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