Antioxidant and antimicrobial properties of Teucrium arduini L. (Lamiaceae) flower and leaf infusions (Teucrium arduini L. antioxidant capacity)

Šamec, Dunja; Grúz, Jiří; Strnad, Miroslav; Kremer, Dario; Kosalec, Ivan; Grubešić, Renata Jurišić; Karlović, Ksenija; Lučić, Ana; Piljac-Žegarac, Jasenka

doi:10.1016/j.fct.2009.09.026

Cited by 55 publications

(29 citation statements)

References 36 publications

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“…The tested yeast strains and E. coli strain were resistant to T. montanum extracts, which our results also indicate. Staphylococcus aureus ATCC 6538 was most sensitive to leaf and flower infusions of T. arduini [17]. None of the tested infusions exhibited antimicrobial activity against Gram-negative bacteria (E. coli ATCC 10535, P. aerugimosa ATCC 27853), or the tested fungi (C. albicans ATCC 10231, A. niger ATCC 16404).…”

Section: Discussionmentioning

confidence: 99%

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Antimicrobial activity, total phenolic content and flavonoid concentrations of Teucrium species

et al. 2012

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In vitro antimicrobial activity of 21 crude extracts obtained from seven taxa of the genus Teucrium (T. chamaedrys, T. montanum, T. arduini, T. polium, T. scordium subsp. scordium, T. scordium subsp. scordioides and T. botrys) was tested against bacterial and fungal species. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined using a microdilution analysis method. Total phenolic content and flavonoid concentrations were measured spectrophotometrically. Total phenols were determined using Folin-Ciocalteu reagent and their amounts ranged from 28.49 up to 159.84 mg CA/g of extract (chlorogenic acid equivalent). The amounts of flavonoids ranged from 38.17 up to 190.45 mg RU/g of extract (rutin equivalent).The plant extracts showed greater potential of antibacterial than antifungal activity. A relationship was found between total phenolics and biological activity. The highest level of total phenols was measured in the methanol extracts, which demonstrated higher antimicrobial activity than acetone and ethyl acetate extracts. Staphylococcus aureus ATCC 25923 appeared to be the most sensitive organism. Our results indicate that Teucrium spp extracts are rich sources of phenolic compounds and are promising candidates for further development as natural antimicrobial agents.

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Section: Discussionmentioning

confidence: 99%

“…Different extracts of Teucrium montanum were investigated for their antimicrobial activity [16]. The ethyl acetate, n-butanol and chloroform extracts of Teucrium montanum were the most active while the extracts of Teucrium arduini and Teucrium polium showed low antibacterial and antifungal activity [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial activity, total phenolic content and flavonoid concentrations of Teucrium species

et al. 2012

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“…Research of Šamec et al [33] showed that extracts of T. arduini leaves (prepared as hot water infusions) possess antibacterial activity against Staphylococcus aureus ATCC 6538 in MIC concentrations between 1.56 and 4.16 mg/mL, depending on the gathering area of T. arduini specimens.…”

Section: Antibacterial and Antifungal Activitymentioning

confidence: 99%

Chemical traits and antimicrobial activity of endemic Teucrium arduini L. from Mt Biokovo (Croatia)

Kremer

Müller²,

Dunkić

et al. 2012

Open Life Sciences

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Chemical composition of the essential oil (analysed by GC-FID and GC-MS), the content of macroelements and trace elements (analysed by ICP-AES), and antimicrobial activities were investigated in Teucrium arduini L. from Mt Biokovo (Croatia). Additionally, a study on the types and distribution of glandular trichomes which produce essential oils was investigated. The oil was characterized by a high concentration of sesquiterpene hydrocarbons (68.5%) of which β-caryophyllene (32.9%) and germacrene D (16.4%) being the major compounds. Among the macroelements, the content of calcium was the highest (9772 mg/kg), while the content of sodium was the smallest (117.74 mg/kg). Among the micronutrients, the most represented element was iron (72.07 mg/kg). The content of each investigated toxic metal (As, Hg, Pb, Cd and Cr) was below permissible levels. The essential oils showed antimicrobial activity against bacterial species tested, with MIC values ranging from 6.25 mg/mL to 37.50 mg/mL. Fungal species were susceptible with MIC values from 7.81 mg/mL and 25.00 mg/mL.

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“…R. intermedia leaf extract exhibited higher TP content than methanol extracts of 133 analyzed Indian medicinal plants 10 and 44 medicinal plants (expect Sargentodoxa cuneata) analyzed by Li et al 11 Also, the leaf extract from R. intermedia has shown a 4-fold higher TP content in comparison to the aqueous leaf extracts from the Croatian endemic plant Teucrium arduini studied earlier. 26 We also quantified ten free phenolic acids in leaf extracts (protocatechuic, p-hydroxybenzoic, gallic, salycilic, chlorogenic, vanillic, caffeic, syringic, p-coumaric and ferulic) and six phenolic acids in bark extracts (protocatechuic, p-hydroxybenzoic, gallic, salycilic, p-coumaric and ferulic). Significantly higher content of all detected phenolic acids, exept salicylic (leaf: 60.55 ± 2.36 µmol g -1 DW; bark: 111.10 ± 14.14 µmol g -1 DW) acid was found in leaf extracts.…”

Section: Phytochemicals Contentmentioning

confidence: 99%

Rhamnus intermedia Steud. et Hochst. – a New Source of Bioactive Phytochemicals

Šamec¹,

Kremer²,

Grúz³

et al. 2012

Croat. Chem. Acta

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Abstract. Antioxidant capacity and various classes of phenolic antioxidants were quantified in leaf and bark methanol extracts of a medicinal plant, Rhamnus intermedia Steud. et Hochst., whose phytochemical composition is unknown. Three well-established assays were used to determine the antioxidant potency of the extracts: the Ferric Reducing/Antioxidant Power assay (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, and 2,2'-azinobis (3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) assay, as well as oxygen radical absorbance capacity (ORAC) assay. Total phenol (TP, Folin-Ciocalteu assay), total flavonoid (TF, colorimetric assay with AlCl 3 ) and free phenolic acid (UPLC-MS/MS) content of extracts was quantified. In comparison to bark extracts, leaf extracts exhibited significantly higher TP and TF contents, as well as higher antioxidant capacity according to all four assays. Ten free phenolic acids were quantified in leaf extracts while six were detected in bark extracts. The most abundant phenolic acid in leaves was vanilic acid (1647.06 ± 79.35 μmol g -1 DW; DW, dry weight) while salycilic acid was the most concentrated in the bark (111.10 ± 14.14 μmol g -1 DW). (doi: 10.5562/cca1946)

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Antioxidant and antimicrobial properties of Teucrium arduini L. (Lamiaceae) flower and leaf infusions (Teucrium arduini L. antioxidant capacity)

Cited by 55 publications

References 36 publications

Antimicrobial activity, total phenolic content and flavonoid concentrations of Teucrium species

Antimicrobial activity, total phenolic content and flavonoid concentrations of Teucrium species

Chemical traits and antimicrobial activity of endemic Teucrium arduini L. from Mt Biokovo (Croatia)

Rhamnus intermedia Steud. et Hochst. – a New Source of Bioactive Phytochemicals

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