Atividade antioxidante e antimicrobiana de Calceolaria chelidonioides Humb. Bonpl. &amp; Kunth.

Falcão, Deborah Quintanilha; Costa, Edlaine Rijo; Alviano, Daniela Sales; Alviano, Celuta Sales; Küster, Ricardo Machado; Menezes, Fábio S.

doi:10.1590/s0102-695x2006000100013

Cited by 25 publications

(16 citation statements)

References 21 publications

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“…The (DPPH) stable free radical photocolorimetric method is frequently used to evaluate the antioxidant property of different extracts from plants (Falcão et al, 2006;Vicentino & Menezes, 2007;Nunes et al, 2008). In relation to the antioxidant property of M. salicifolia, the extracts EHF, EBF, EMF and EHT were considered Maytenus salicifolia: triterpenes isolated from stems and antioxidant property of extracts from aerial parts Cássia G. Magalhães et al inactive, but the extracts EMT and EAF showed significant activity at concentrations above 40.0 µg/mL, EAPF and EAT>30.0 µg/mL and EMPF>20.0 µg/mL (Figure 1).…”

Section: Resultsmentioning

confidence: 99%

Maytenus salicifolia Reissek, Celastraceae: triterpenes isolated from stems and antioxidant property of extracts from aerial parts

Magalhães¹,

Ferrari²,

Guimarâes³

et al. 2011

Rev. bras. farmacogn.

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Six pentacyclic triterpenes were isolated from hexane extract of stems of Maytenus salicifolia Reissek, Celastraceae: 30-hydroxyfriedelan-3-one (1), 3,16-dioxofriedelane (2), friedeline (3), lupeol (4), betuline (5) and lup-20(29)-en-3,30-diol (6). The structure each one was established on the basis of detailed 1 H and 13 C NMR spectral investigation and by comparison with the respective literature values. For compound 1, the complete 2D NMR (HMBC, HMQC and NOESY) spectral data were herein reported for the first time. Compounds 1, 2, 5 and 6 were isolated for the first time from this plant. Antioxidant activity is described for some extracts from species of the Celastraceae family, then, the extracts from aerial parts of M. salicifolia were evaluated in relation to antioxidant potential using the DPPH method. Compared to quecertin, the AcEt extract (EAF) from leaves, AcEt (EAPF) and MeOH (EMPF) from pulp fruit and AcEt (EAT) and MeOH (EMT) from stems showed significant antioxidant property.

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Section: Resultsmentioning

confidence: 99%

Maytenus salicifolia Reissek, Celastraceae: triterpenes isolated from stems and antioxidant property of extracts from aerial parts

Magalhães¹,

Ferrari²,

Guimarâes³

et al. 2011

Rev. bras. farmacogn.

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“…The free radical scavenging activity was measured using the 2,2-diphenyl-1-picrylhydrazil (DPPH) assay [18]. Sample stock solutions (1.0 mg/mL) of extracts were diluted to final concentrations of 243, 81, 27, 9, 3 and 1 mg/mL, in ethanol.…”

Section: Dpph Radical Assaymentioning

confidence: 99%

Phytochemical analysis and evaluation of antioxidant and photoprotective activities of extracts from flowers of Bromelia laciniosa (Bromeliaceae)

Oliveira-Júnior

Ferraz

Souza

et al. 2017

Biotechnology & Biotechnological Equipment

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In this study, the phytochemical profile of extracts from the flowers of Bromelia laciniosa was characterized. The total phenolic and flavonoids contents were determined and the antioxidant and photoprotective activities were evaluated using in vitro assays. Phytochemical analysis demonstrated that the extracts were found to be positive for the presence of anthracene derivatives, anthraquinones, coumarins, flavonoids and tannins, lignans, mono and diterpenes. The ethanol extract (Bl-EtOH) presented the most significant total phenolic content (53.75 § 1.25 mg GAE/g). The dichloromethane extract (Bl-CH 2 Cl 2 ) showed the highest flavonoid content (46.06 § 1.18 mg CE/g). The methanol extract (Bl-MeOH) was the most effective extract in the DPPH (2,2-diphenyl-1-picrylhydrazil) assay (EC 50 141.90 § 3.01 mg/mL). Bl-EtOH and Bl-MeOH showed higher sun protection factor at a concentration of 100 mg/L (3.38 § 0.04 and 3.78 § 0.11, respectively). Therefore, the extracts proved to be interesting for the development of new studies aiming their incorporation into photoprotective cosmetic formulations.

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“…The free radical scavenging activity was measured using the 2, 2-diphenyl-1-picrylhydrazyl radical (DPPH) assay (Falcão et al, 2006). Sample stock solutions (1.0 mg/ml) of extracts were diluted to final concentrations of 243, 81, 27, 9, 3 and 1 μg/ml, in ethanol.…”

Section: Antioxidant Activity In Vitro -Dpph Free Radical Scavenging mentioning

confidence: 99%

High-performance liquid chromatography-diode-array detector (HPLC-DAD) analysis and evaluation of antioxidant and photoprotective activities of extracts from seeds of Simira gardneriana M. R. V. Barbosa and Peixoto (Rubiaceae)

Ferraz¹,

Oliveira-JÃºnior²,

Oliveira³

et al. 2017

Afr. J. Biotechnol.

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Simira gardneriana is a Rubiaceae species commonly found in the Brazilian Northeast region, presented several therapeutic and biotechnological applications. In this paper, the antioxidant and photoprotective properties of extracts from the seeds of S. gardneriana were highlighted. The antioxidant activity of ethanol and methanol extracts (Si-EtOH and Si-MeOH, respectively) was determined, using 1,1-Diphenyl-2-picryl-hydrazyl (DPPH) free radical scavenging assay. The photoprotective activity of the extracts was evaluated using a spectrophotometric method. Total phenolic and flavonoid content was determined. In addition, a qualitative analysis of phytochemical markers and a high-performance liquid chromatography-diode-array detector (HPLC-DAD) analysis were also performed for both extracts. Concerning the antioxidant activity in vitro, Si-MeOH (EC 50 = 70.94±2.17 µg/ml) showed greater activity in comparison to Si-EtOH (EC 50 = 138.60±7.39 µg/ml). Once the sun protection factor spectrophotometric (SPF spectrophotometric ) of samples was calculated, it was demonstrated that the extracts show a similar photoprotective effect on all concentrations tested. SiEtOH and Si-MeOH tested on a concentration of 100 mg/l, exhibited SPF values equal to 3.37±0.006 and 3.36±0.007, respectively. HPLC fingerprints was recorded and showed the presence of characteristic peaks for phenolic compounds. The extracts showed significant phenols and flavonoids content according to the quantification methods used. According to the results, it was concluded that Si-EtOH and Si-MeOH have significant antioxidant and photoprotective activities. These activities are probably related to the profile of flavonoids and phenolic compounds found in this species.

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Atividade antioxidante e antimicrobiana de Calceolaria chelidonioides Humb. Bonpl. & Kunth.

Cited by 25 publications

References 21 publications

Maytenus salicifolia Reissek, Celastraceae: triterpenes isolated from stems and antioxidant property of extracts from aerial parts

Maytenus salicifolia Reissek, Celastraceae: triterpenes isolated from stems and antioxidant property of extracts from aerial parts

Phytochemical analysis and evaluation of antioxidant and photoprotective activities of extracts from flowers of Bromelia laciniosa (Bromeliaceae)

High-performance liquid chromatography-diode-array detector (HPLC-DAD) analysis and evaluation of antioxidant and photoprotective activities of extracts from seeds of Simira gardneriana M. R. V. Barbosa and Peixoto (Rubiaceae)

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