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Alves MF, Katchborian-Neto A, Bueno PCP, Carnevale-Neto F, Casoti R, Ferreira MS, Murgu M, de Paula ACC, Dias DF, Soares MG, Chagas-Paula DA. LC-MS/DIA-based strategy for comprehensive flavonoid profiling: an Ocotea spp. applicability case. RSC Adv 2024; 14:10481-10498. [PMID: 38567345 PMCID: PMC10985591 DOI: 10.1039/d4ra01384k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 03/22/2024] [Indexed: 04/04/2024] Open
Abstract
We introduce a liquid chromatography - mass spectrometry with data-independent acquisition (LC-MS/DIA)-based strategy, specifically tailored to achieve comprehensive and reliable glycosylated flavonoid profiling. This approach facilitates in-depth and simultaneous exploration of all detected precursors and fragments during data processing, employing the widely-used open-source MZmine 3 software. It was applied to a dataset of six Ocotea plant species. This framework suggested 49 flavonoids potentially newly described for these plant species, alongside 45 known features within the genus. Flavonols kaempferol and quercetin, both exhibiting O-glycosylation patterns, were particularly prevalent. Gas-phase fragmentation reactions further supported these findings. For the first time, the apigenin flavone backbone was also annotated in most of the examined Ocotea species. Apigenin derivatives were found mainly in the C-glycoside form, with O. porosa displaying the highest flavone : flavonol ratio. The approach also allowed an unprecedented detection of kaempferol and quercetin in O. porosa species, and it has underscored the untapped potential of LC-MS/DIA data for broad and reliable flavonoid profiling. Our study annotated more than 50 flavonoid backbones in each species, surpassing the current literature.
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Affiliation(s)
- Matheus Fernandes Alves
- Institute of Chemistry, Federal University of Alfenas-MG 37130-001 Alfenas Minas Gerais Brazil
| | - Albert Katchborian-Neto
- Institute of Chemistry, Federal University of Alfenas-MG 37130-001 Alfenas Minas Gerais Brazil
| | - Paula Carolina Pires Bueno
- Leibniz Institute of Vegetable and Ornamental Crops (IGZ) Theodor-Echtermeyer-Weg 1 14979 Großbeeren Germany
| | - Fausto Carnevale-Neto
- Northwest Metabolomics Research Center, Department of Anesthesiology and Pain Medicine, University of Washington 850 Republican Street Seattle Washington 98109 USA
| | - Rosana Casoti
- Antibiotics Department, Federal University of Pernambuco 50670-901 Recife Pernambuco Brazil
| | - Miller Santos Ferreira
- Institute of Chemistry, Federal University of Alfenas-MG 37130-001 Alfenas Minas Gerais Brazil
| | - Michael Murgu
- Waters Corporation Alameda Tocantins 125, Alphaville 06455-020 São Paulo Brazil
| | | | - Danielle Ferreira Dias
- Institute of Chemistry, Federal University of Alfenas-MG 37130-001 Alfenas Minas Gerais Brazil
| | - Marisi Gomes Soares
- Institute of Chemistry, Federal University of Alfenas-MG 37130-001 Alfenas Minas Gerais Brazil
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High-Resolution Mass Spectrometry Identification and Characterization of Flavonoids from Fridericia chica Leaves Extract with Anti-Arbovirus Activity. Molecules 2022; 27:molecules27186043. [PMID: 36144777 PMCID: PMC9501042 DOI: 10.3390/molecules27186043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/11/2022] [Accepted: 08/17/2022] [Indexed: 11/25/2022] Open
Abstract
Plant extracts are complex mixtures that are difficult to characterize, and mass spectrometry is one of the main techniques currently used in dereplication processes. Fridericia chica is a species with medicinal uses in Latin American countries, used in the treatment of inflammatory and infectious diseases. Extracts of this plant species are characterized by the presence of anthocyanidins. In this study, using high-resolution mass spectrometry coupled with liquid chromatography, it was possible to determine the molecular formula of thirty-nine flavonoids. Fragmentation analysis, ultraviolet spectrum and nuclear magnetic resonance data allowed the partial characterization of the structures of these compounds. The spectral dataset allowed the identification of a series of flavones in addition to the desoxyanthocyanidins common in extracts of the species. The occurrence of some of the proposed structures is uncommon in extracts of species of the Bignoniaceae family, and they are reported for the first time in the extract of this species. Quantitative analyses of total flavonoids confirmed the high content of these constituents in the species, with 4.09 ± 0.34 mg/g of dry plant material. The extract under study showed low in vitro cytotoxicity with CC50 ≥ 296.7 ± 1.4 µg/mL for Vero, LLC-MK2 and MRC-5 cell lines. In antiviral activity assays, inhibition of the cytopathic effects of Dengue, Zika and Mayaro viruses was observed, with EC50 values ranging between 30.1 and 40.9 µg/mL. The best result was observed against the Mayaro virus, with an EC50 of 30.1 µg/mL.
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Gribner C, Barbosa V, Monteiro LM, Swiech JND, Raman V, Manfron J, Miguel OG, Montrucchio DP, de Fátima Gaspari Dias J. Microscopic investigations of Ocotea paranaensis-A Brazilian endemic and endangered species. Microsc Res Tech 2022; 85:3316-3324. [PMID: 35751588 DOI: 10.1002/jemt.24186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 05/28/2022] [Accepted: 06/06/2022] [Indexed: 11/06/2022]
Abstract
This article describes the morpho-anatomies of the leaves and stems of Ocotea paranaensis Brotto, Baitello, Cervi & Santos (Lauraceae) using light and scanning electron microscopy. The main anatomical features characterizing the species are the presence of simple non-glandular trichomes in the leaves and stems, large secretory cells in the leaves, flat-convex petioles with two small lateral ribs, brachysclereids in the stem cortex and pith, and the presence of starch grains and various types of calcium oxalate crystals in the pith. Histochemical tests indicated the presence of lignin in stone cells, fibers, and xylem. Lipophilic contents were found in the secretory cells. Phenolic compounds were detected in the epidermis, hypodermis, phloem, and xylem. The present study's findings can contribute to the taxonomy and authentication of O. paranaensis.
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Affiliation(s)
- Caroline Gribner
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Parana, Curitiba, Brazil
| | - Vanessa Barbosa
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Parana, Curitiba, Brazil
| | - Luciane Mendes Monteiro
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa, Brazil
| | | | - Vijayasankar Raman
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, USA
| | - Jane Manfron
- Postgraduate Program in Pharmaceutical Sciences, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Obdulio Gomes Miguel
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Parana, Curitiba, Brazil
| | - Deise Prehs Montrucchio
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Parana, Curitiba, Brazil
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Boeno SI, Vieira IJC, Braz-Filho R, de Souza Passos M, Curcino Vieira MG, do Nascimento MFA, Gontijo DC, de Oliveira AB. Antiplasmodial and cytotoxic effects of the methanol extract, canthinone alkaloids, squalene- and protolimonoid-type triterpenes from Homalolepis suffruticosa roots. JOURNAL OF ETHNOPHARMACOLOGY 2022; 285:114890. [PMID: 34864128 DOI: 10.1016/j.jep.2021.114890] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Different species of the Simaroubaceae family are used in traditional medicine to treat malaria. Among these is Homalolepis suffruticosa (syn. Simaba suffruticosa and Quassia suffruticosa), which is native to Central Brazil and popularly known as calunga. However, there is a lack of investigation concerning its antimalarial effects. AIM OF THE STUDY To investigate the antiplasmodial and cytotoxic effects of the isolated metabolites and methanol extract from H. suffruticosa roots as well as to conduct the dereplication of this extract aiming to characterize its metabolic profile by UPLC-DAD-ESI-MS/MS. MATERIALS AND METHODS Methanol extract of the H. suffruticosa roots and six isolated compounds were evaluated against chloroquine-resistant Plasmodium falciparum W2 strain by the PfLDH method and cytotoxicity in HepG2 cells by the MTT assay. Dereplication of the extract was performed by UPLC-DAD-ESI-MS/MS. RESULTS The six isolated compounds disclosed high to moderate antiplasmodial activity (IC50 0.0548 ± 0.0083 μg/mL to 26.65 ± 2.40 μg/mL) and cytotoxicity was in the range of CC50 0.62 ± 0.33 μg/mL to 56.43 ± 2.54 μg/mL, while 5-metoxycantin-6-one proved to be the most potent constituent of the six assayed ones. The methanol extract of the roots showed high in vitro antiplasmodial activity (IC50 1.88 ± 0.56 μg/mL), moderate cytotoxicity (CC50 41.93 ± 2.30 μg/mL), and good selectivity index (SI = 22.30). Finally, C20 quassinoids and canthin-6-one alkaloids were putatively identified in the H. suffruticosa methanol extract by LC-MS. CONCLUSIONS Taken together, the isolated compounds, mainly the 5-metoxycantin-6-one and the methanol extract from H. suffruticosa roots, disclose good antiplasmodial activity, supporting the ethnopharmacological history of the Simaroubaceae species as traditional antimalarial drugs.
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Affiliation(s)
- Samyra Imad Boeno
- Laboratório de Ciências Químicas, CCT, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamengo, 2000, Parque Califórnia, 28013-602, Campos dos Goytacazes, RJ, Brazil
| | - Ivo José Curcino Vieira
- Laboratório de Ciências Químicas, CCT, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamengo, 2000, Parque Califórnia, 28013-602, Campos dos Goytacazes, RJ, Brazil
| | - Raimundo Braz-Filho
- Laboratório de Ciências Químicas, CCT, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamengo, 2000, Parque Califórnia, 28013-602, Campos dos Goytacazes, RJ, Brazil
| | - Michel de Souza Passos
- Laboratório de Ciências Químicas, CCT, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamengo, 2000, Parque Califórnia, 28013-602, Campos dos Goytacazes, RJ, Brazil
| | - Milena Gonçalves Curcino Vieira
- Instituto Federal de Educação, Ciência e Tecnologia, Rua Dr. Siqueira, 273, Parque Dom Bosco, 28030-130, Campos dos Goytacazes, RJ, Brazil
| | - Maria Fernanda Alves do Nascimento
- Faculdade de Farmácia, Departamento de Produtos Farmacêuticos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil
| | - Douglas Costa Gontijo
- Faculdade de Farmácia, Departamento de Produtos Farmacêuticos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil
| | - Alaíde Braga de Oliveira
- Faculdade de Farmácia, Departamento de Produtos Farmacêuticos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil.
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Gontijo DC, do Nascimento MFA, Rody HVS, Magalhães RA, Margalho LF, Brandão GC, de Oliveira AB. In vitro antiplasmodial activity, targeted LC-MS metabolite profiling, and identification of major natural products in the bioactive extracts of Palicourea and Psychotria species from the Amazonia and Atlantic Forest biomes, Brazil. Metabolomics 2021; 17:81. [PMID: 34480651 DOI: 10.1007/s11306-021-01833-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 08/25/2021] [Indexed: 10/20/2022]
Abstract
INTRODUCTION A great variety of bioactive natural products has been reported for different Palicourea and Psychotria species (Rubiaceae). However, few of them as well as few of species of these botanical genera have been evaluated for antiplasmodial activity. OBJECTIVE To assess the antiplasmodial activity of 24 extracts from Palicourea and Psychotria genera, along with the targeted LC-MS metabolite profiling, as well as identification of the main metabolites in the bioactive extracts. METHODS Twenty four ethanol and acid-base extracts from Palicourea and Psychotria genera collected in the Amazonia and Atlantic Forest, Brazil, were evaluated against chloroquine-resistant Plasmodium falciparum W2 strain by PfLDH. The metabolite profiling and putative identification of metabolites from bioactive extracts were determined by LC-DAD-ESI-MS and LC-HRMS, respectively. RESULTS The ethanol extracts disclosed low antiplasmodial activity (% GI < 50%). High antiplasmodial effect was observed for the acid-base extracts from Psychotria apoda and Psychotria colorata with 100% inhibition of parasite growth inhibition. Fragment ions related to pyrrolidinoindoline alkaloids were observed by LC-DAD-ESI-MS mainly in the most bioactive extracts. The results of the in vitro screening associated with the LC-DAD-ESI-MS and LC-HRMSn data allowed to predict, for the first time, the pyrrolidinoindoline alkaloids as possible antiplasmodial representing, then, new potential natural antimalarial hits. In addition, other metabolite classes such as flavanones, lignans and chalcones were also putatively identified in the bioactive extracts of Psychotria apoda, Psychotria capitata, and Psychotria poeppigiana. CONCLUSION The present results point to Palicourea and Psychotria species as sources of new antimalarial hits.
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Affiliation(s)
- Douglas Costa Gontijo
- Departamento de Produtos Farmacêuticos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Maria Fernanda Alves do Nascimento
- Departamento de Produtos Farmacêuticos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Hugo Vianna Silva Rody
- Escola Superior de Agricultura "Luiz de Queiroz", Departamento de Genética, Universidade de São Paulo, Av. Pádua Dias, 11, Piracicaba, SP, 13418-900, Brazil
| | - Rodrigo Andrade Magalhães
- Departamento de Botânica, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | | | - Geraldo Célio Brandão
- Escola de Farmácia, Universidade Federal de Ouro Preto, Morro Do Cruzeiro, s/n, Ouro Prêto, MG, 35400-000, Brazil
| | - Alaíde Braga de Oliveira
- Departamento de Produtos Farmacêuticos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil.
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Betim FCM, Oliveira CFD, Rech KS, Souza AM, Miguel OG, Miguel MD, Montrucchio DP, Maurer JBB, Dias JDFG. Ocotea nutans (Nees) Mez: structural elucidation of C-hetorosides flavonoids and evaluation of their antioxidant and antibacterial properties from ethyl acetate extract. Nat Prod Res 2021; 36:2902-2906. [PMID: 34039181 DOI: 10.1080/14786419.2021.1931184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The Ocotea genus exhibits a variety of pharmacological, antibacterial and antioxidant effects. The aim of the present study was to evaluate the antioxidant potential and antibacterial properties of the ethyl acetate fraction of Ocotea nutans leaves. Isolation and identification of the phenolic compounds from the fraction was also carried out. The isolated compounds were characterised by one- and two-dimensional nuclear magnetic resonance analysis and identified as vitexin (1) and isovitexin (2). The ethyl acetate fraction of Ocotea nutans leaves demonstrated considerable antioxidant potential. The observed minimum inhibitory concentration of 250 µg.mL-1 was classified as a moderate antibacterial activity against Enterococcus faecalis. Findings from this study demonstrate the utility of this plant as a potential source of antioxidant and antibacterial agents.
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Affiliation(s)
- Fernando Cesar Martins Betim
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
| | - Camila Freitas de Oliveira
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
| | - Katlin Suellen Rech
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
| | - Angela Maria Souza
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
| | - Obdulio Gomes Miguel
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
| | - Marilis Dallarmi Miguel
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
| | - Deise Prehs Montrucchio
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
| | - Juliana Bello Baron Maurer
- Department of Biochemistry and Molecular Biology, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
| | - Josiane de Fátima Gaspari Dias
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil
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de Alcântara BGV, Oliveira FPD, Katchborian-Neto A, Casoti R, Domingos ODS, Santos MFC, Oliveira RBD, Paula ACCD, Dias DF, Soares MG, Chagas-Paula DA. Confirmation of ethnopharmacological anti-inflammatory properties of Ocotea odorifera and determination of its main active compounds. JOURNAL OF ETHNOPHARMACOLOGY 2021; 264:113378. [PMID: 32918995 DOI: 10.1016/j.jep.2020.113378] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/28/2020] [Accepted: 09/04/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ocotea odorifera (Vell.) Rohwer has been used in traditional medicine in the south of Brazil for the treatment of inflammatory-related conditions, such as rheumatism. However, there is not any scientific evidence for popular use. AIMS OF THE STUDY To investigate the O. odorifera anti-inflammatory potential and identification of the main active compounds through metabolomic approaches. MATERIALS AND METHODS In order to in vivo evaluate the inhibition of the main inflammatory pathways, the leaf decoction, leaf extract, its fractions and the essential oils from leaves and branches were submitted to the ear oedema and the neutrophils recruitment assays. The samples were chemically investigated by UHPLC-HRMS or GC-MS. The multivariate statistical analysis (PLS-DA) was used to determine the substances correlated with the anti-inflammatory properties. RESULTS The in vivo studies indicated a promissory anti-inflammatory effect on both oedema and neutrophil recruitment for some samples including the decoction; hydroethanolic, ethyl acetate, and chloroform fractions; and the essential oils. According to the PLS-DA, the S-(+)-reticuline was evidenced as one of the three compounds of the plant most correlated with both anti-inflammatory mechanisms. Thus, S-(+)-reticuline was isolated and the anti-inflammatory activity was confirmed. Moreover, for the first time, the dual inhibition of oedema and neutrophil recruitment was uncovered and reported. Another compound positively correlated with the anti-inflammatory activity is likely to be a new compound since zero hit on the comprehensive mass database were encountered. The compounds found in the essential oils also showed significant anti-inflammatory activity, and thus indeed the plant has different classes of active substances. CONCLUSIONS The decoction of O. odorifera and different fractions from its ethanolic extract demonstrated anti-inflammatory activity through dual inhibition of oedema and neutrophil recruitment. Thus, corroborating the popular medicinal use of the decoction of leaves from O. odorifera as an anti-inflammatory medicine. Besides, reticuline, one of the main active compounds, was isolated and proved to display the dual mechanism of action, indicating the O. odorifera as a promising source of active compounds for the treatment of inflammatory conditions.
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Affiliation(s)
- Bianca Gonçalves Vasconcelos de Alcântara
- Laboratory of Phytochemistry and Medicinal Chemistry, Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Felipe Policarpo de Oliveira
- Laboratory of Phytochemistry and Medicinal Chemistry, Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Albert Katchborian-Neto
- Laboratory of Phytochemistry and Medicinal Chemistry, Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Rosana Casoti
- AsterBioChem, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo (USP), Av. Do Café S/nº, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Olívia da Silva Domingos
- Laboratory of Phytochemistry and Medicinal Chemistry, Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Mário Ferreira Conceição Santos
- Laboratory of Phytochemistry and Medicinal Chemistry, Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Rejane Barbosa de Oliveira
- Federal University of Technology - Parana (UTFPR), Rua Cerejeira, S/n°, 85892-000, Santa Helena, Paraná, Brazil
| | - Ana Cláudia Chagas de Paula
- Department of Pharmaceutical Sciences, Federal University of Juiz de Fora (UFJF), Rua José Lourenço Kelmer, S/n, 36036-900, Juiz de Fora, Minas Gerais, Brazil
| | - Danielle Ferreira Dias
- Laboratory of Phytochemistry and Medicinal Chemistry, Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Marisi Gomes Soares
- Laboratory of Phytochemistry and Medicinal Chemistry, Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Daniela Aparecida Chagas-Paula
- Laboratory of Phytochemistry and Medicinal Chemistry, Chemistry Institute, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, 37130-001, Alfenas, Minas Gerais, Brazil.
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Ibrahim H, Aoussar N, Mhand RA, Rhallabi N, Oili AD, Mellouki F. In vitro antioxidant and antistaphylococcal properties of leaf extracts of Ocotea comorensis Kosterm (Lauraceae). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2020.101892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Samulski GB, Gontijo DC, Moreira NC, Brandão GC, Braga de Oliveira A. Dereplication of Palicourea sessilis ethanol extracts by UPLC-DAD-ESI-MS/MS discloses the presence of hydroxycinnamic acid amides and the absence of monoterpene indole alkaloids. BIOCHEM SYST ECOL 2020. [DOI: 10.1016/j.bse.2020.104114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gribner C, Rech KS, Moura PF, Ruscheweyh Rigoni AA, Gatto LJ, Veiga A, Kerber VA, Miguel MD, Miguel OG, Dias JDFG. Characterization and identification of chemical constituents of Ocotea paranaensis Brotto, Baitello, Cervi, & E.P. Santos and their biological properties. Nat Prod Res 2020; 36:2379-2385. [DOI: 10.1080/14786419.2020.1826476] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Caroline Gribner
- Pharmaceutical Sciences Graduate Program, Federal University of Paraná, Curitiba, PR, Brazil
| | - Katlin Suellen Rech
- Pharmaceutical Sciences Graduate Program, Federal University of Paraná, Curitiba, PR, Brazil
| | | | | | - Larissa Junqueira Gatto
- Pharmaceutical Sciences Graduate Program, Federal University of Paraná, Curitiba, PR, Brazil
| | - Andressa Veiga
- Pharmaceutical Sciences Graduate Program, Federal University of Paraná, Curitiba, PR, Brazil
| | - Vitor Alberto Kerber
- Pharmaceutical Sciences Graduate Program, Federal University of Paraná, Curitiba, PR, Brazil
| | - Marilis Dallarmi Miguel
- Pharmaceutical Sciences Graduate Program, Federal University of Paraná, Curitiba, PR, Brazil
| | - Obdulio Gomes Miguel
- Pharmaceutical Sciences Graduate Program, Federal University of Paraná, Curitiba, PR, Brazil
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Antonio ADS, Aguiar ATC, Dos Santos GRC, Pereira HMG, da Veiga-Junior VF, Wiedemann LSM. Phytochemistry by design: a case study of the chemical composition of Ocotea guianensis optimized extracts focused on untargeted metabolomics analysis. RSC Adv 2020; 10:3459-3471. [PMID: 35497754 PMCID: PMC9048970 DOI: 10.1039/c9ra10436d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 01/15/2020] [Indexed: 02/04/2023] Open
Abstract
Untargeted metabolomics aim to provide a global chemical fingerprint of biological matrices. This research field can be used in phytochemical screenings for bioactive species or in the identification of species. Despite its importance in providing a global chemical profile, little research has focused on the optimization of the extraction methods, as each type of matrix requires a specific procedure. Therefore, we propose to evaluate the effect of different extraction features in an ultrasound-assisted extraction for the untargeted metabolomic study of an Ocotea species, a genus of great economical interest but little chemical exploitation. Method optimization was performed in a full factorial 2232 design, evaluating the solvent composition, extraction temperature, sample particle size and sample : solvent ratio effects in the metabolomic response. The effect of these parameters on the quality of the untargeted metabolomic profiles was studied by analysis of the extraction yield as well as the chromatographic and spectrometric profiles. Most substances identified were glycosylated flavonoids and aporphinic alkaloids. The application of 70% ethanol enhanced the extraction of several specialized metabolites. Statistical analysis of extraction yield and chemical profiles indicates that high temperatures and low proportion between sample and extracting solvent reduce the quality and modify the chemical profile, both qualitatively and quantitatively. The use of 70% ethanol as the extracting solvent, 1 : 12 sample : solvent ratio, 40 °C as the extraction temperature and particle size of 0.595 mm were the optimized conditions to produce a comprehensive chemical profile for Ocotea guianensis.
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Affiliation(s)
- Ananda da Silva Antonio
- Chemistry Department, Institute of Exact Sciences, Federal University of Amazonas Avenida Rodrigo Octávio, 6200, Coroado CEP: 69.077-000 Manaus AM Brazil
| | - Ana Tayná Chaves Aguiar
- Chemistry Department, Institute of Exact Sciences, Federal University of Amazonas Avenida Rodrigo Octávio, 6200, Coroado CEP: 69.077-000 Manaus AM Brazil
| | - Gustavo Ramalho Cardoso Dos Santos
- Federal University of Rio de Janeiro, Chemistry Institute, Brazilian Doping Control Laboratory (LBCD - LADETEC/IQ - UFRJ) Avenida Horácio Macedo, 1281 - Pólo de Química - Cidade Universitária, Ilha do Fundão CEP: 21941-598 Rio de Janeiro RJ Brazil
| | - Henrique Marcelo Gualberto Pereira
- Federal University of Rio de Janeiro, Chemistry Institute, Brazilian Doping Control Laboratory (LBCD - LADETEC/IQ - UFRJ) Avenida Horácio Macedo, 1281 - Pólo de Química - Cidade Universitária, Ilha do Fundão CEP: 21941-598 Rio de Janeiro RJ Brazil
| | - Valdir Florêncio da Veiga-Junior
- Chemistry Department, Institute of Exact Sciences, Federal University of Amazonas Avenida Rodrigo Octávio, 6200, Coroado CEP: 69.077-000 Manaus AM Brazil
- Chemical Engineering Section, Military Institute of Engineering Praça General Tibúrcio, 80, Praia Vermelha, Urca CEP: 22.290-270 Rio de Janeiro RJ Brazil
| | - Larissa Silveira Moreira Wiedemann
- Chemistry Department, Institute of Exact Sciences, Federal University of Amazonas Avenida Rodrigo Octávio, 6200, Coroado CEP: 69.077-000 Manaus AM Brazil
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das Chagas Almeida A, Azevedo Rodrigues L, dos Santos Paulino G, Pereira Aguilar A, Andrade Almeida A, Olavo Ferreira S, Brandão GC, Viana Leite JP, de Oliveira Barros Ribon A. Prenylated flavonoid-enriched fraction from Maclura tinctoria shows biological activity against Staphylococcus aureus and protects Galleria mellonella larvae from bacterial infection. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:189. [PMID: 31357964 PMCID: PMC6664575 DOI: 10.1186/s12906-019-2600-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 07/18/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND The Atlantic Forest biome extends along the entire Brazilian coast and is home to approximately 20,000 plant species, many of which are endemic; it is considered one of the hotspot regions of the planet. Several of these species are sources of natural products with biological activities that are still unknown. In this study, we evaluated the antimicrobial activity of 90 extracts derived from native Atlantic Forest tree species against Staphylococcus aureus, an important human and veterinary pathogen. METHODS Extracts from native Atlantic Forest tree species were evaluated for their antimicrobial activity against S. aureus by in vitro standard methods. Phytochemical fractionation of the extract from Maclura tinctoria was performed by liquid-liquid partitioning. LC-DAD-ESI-MS was used for identification of constituents in the most active fraction. Damage of cells and alterations in the permeability of cell membrane were determined by atomic force microscopy (AFM) and crystal violet uptake assay, respectively. In vivo antimicrobial activity was evaluated using Galleria mellonella larvae infected with S. aureus with survival data collected using the Kaplan-Meier method. RESULTS Among the organic or aqueous extracts tested here, 26 showed biological activity. Eight species showed relevant results, with a minimum inhibitory concentration (MIC) below 1 mg/mL. Antibacterial activity was registered for three species for the first time. An organic extract from Maclura tinctoria leaves showed the lowest MIC (0.08 mg/mL). Fractionation of this extract by liquid-liquid partitioning led to obtaining fraction 11FO d with a MIC of 0.04 mg/mL. This fraction showed strong activity against veterinary S. aureus isolates and contributed to the increased survival of Galleria mellonella larvae infected with S. aureus ATCC 29213. The bacterial surface was not altered by the presence of 11FO d, and no cell membrane damage was detected. The LC-DAD-ESI/MS analyses identified prenylated flavonoids as the major constituents responsible for the antibacterial activity of this active extract. CONCLUSION A fraction enriched in prenylated isoflavones and flavanones from M. tinctoria showed in vitro and in vivo efficacy as antistaphylococcal agents. These findings justify the need for further research to elucidate the mechanisms of action of these compounds.
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Gontijo DC, Gontijo PC, Brandão GC, Diaz MAN, de Oliveira AB, Fietto LG, Leite JPV. Antioxidant study indicative of antibacterial and antimutagenic activities of an ellagitannin-rich aqueous extract from the leaves of Miconia latecrenata. JOURNAL OF ETHNOPHARMACOLOGY 2019; 236:114-123. [PMID: 30853643 DOI: 10.1016/j.jep.2019.03.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/04/2019] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
Ethnopharmacological relevance; Several plant species of Miconia genus are commonly used in Brazilian folk medicine as anti-inflammatory agents and for the treatment of infectious diseases. Infusions and extracts of Miconia species are also reported as analgesic, antimicrobial, antimalarial, antioxidant, anti-inflammatory, antinociceptive, antimutagenic, and antitumoral. Aim of the study; To determine the phytochemical composition of an aqueous extract of Miconia latecrenata leaves and to evaluate its antioxidant, antibacterial, antimutagenic and antigenotoxic activities. Materials and Methods; The following methods were used for the different effects: I) antioxidant - β-carotene/linoleic acid, lipid peroxidation, and DPPH• radical scavenging; II) antibacterial - agar well diffusion and MIC methods); III) antimutagenic assays - Ames Test; and IV) antigenotoxic - Plasmid cleavage test. The phytochemical analysis and phenolic quantification were carried out by UPLC-DAD-ESI-MS/MS and colorimetry, respectively. In addition, statistical correlation analysis was performed aiming to evaluate the Pearson correlation between phenolic compounds and biological assays. Results; A high content of tannins was observed and the ellagitannin isomers of 1,2,3,5-tris-galloyl-4,6-HHDP-glucose were identified as the main constituents of the leaves aqueous extract. High antioxidant effect, in different tests, high antibacterial activity to gram-positive and negative strains, as well as high antimutagenic activity were observed. Statistical analysis showed a high Pearson correlation for the tannin content in relation to the results of the antioxidant and antibacterial tests. In general, the antioxidant action of the aqueous extract showed low correlation with the antimutagenic activity. Conclusions; The present results confirmed the expectations regarding the pharmacological profile of M. latecrenata supporting its therapeutic potential in relation to ROS/RNS related disorders. Furthermore, the phenolic compounds of M. latecrenata can act, in turn, minimizing or inhibiting the biological macromolecules damage, especially DNA.
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Affiliation(s)
- Douglas Costa Gontijo
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP, 31270-901, Belo Horizonte, MG, Brazil; Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n - Campus Universitário, CEP, 36570-000, Viçosa, MG, Brazil
| | - Pablo Costa Gontijo
- Setor de Agronomia, Instituto Federal Goiano, Rodovia Sul Goiana, Km 01, CEP, 75901-970, Rio Verde, GO, Brazil
| | - Geraldo Célio Brandão
- Escola de Farmácia, Universidade Federal de Ouro Preto, Morro do Cruzeiro, s/n, CEP, 35400-000, Ouro Preto, MG, Brazil
| | - Marisa Alves Nogueira Diaz
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n - Campus Universitário, CEP, 36570-000, Viçosa, MG, Brazil
| | - Alaíde Braga de Oliveira
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, CEP, 31270-901, Belo Horizonte, MG, Brazil
| | - Luciano Gomes Fietto
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n - Campus Universitário, CEP, 36570-000, Viçosa, MG, Brazil
| | - João Paulo Viana Leite
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n - Campus Universitário, CEP, 36570-000, Viçosa, MG, Brazil.
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Brito LF, Gontijo DC, Toledo RCL, Barcelos RM, de Oliveira AB, Brandão GC, de Sousa LP, Ribeiro SMR, Leite JPV, Fietto LG, de Queiroz JH. Mangifera indica leaves extract and mangiferin modulate CB1 and PPARγ receptors and others markers associated with obesity. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Brainina K, Stozhko N, Bukharinova M, Khamzina E, Vidrevich M. Potentiometric method of plant microsuspensions antioxidant activity determination. Food Chem 2019; 278:653-658. [DOI: 10.1016/j.foodchem.2018.11.098] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 11/20/2018] [Accepted: 11/20/2018] [Indexed: 10/27/2022]
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Optimization of Flavonoid Extraction in Dendrobium officinale Leaves and Their Inhibitory Effects on Tyrosinase Activity. Int J Anal Chem 2019; 2019:7849198. [PMID: 31001339 PMCID: PMC6436366 DOI: 10.1155/2019/7849198] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 02/19/2019] [Accepted: 02/25/2019] [Indexed: 11/30/2022] Open
Abstract
In order to establish the extraction technology of flavonoids from Dendrobium officinale leaves, a method combining Plackett–Burman design (PBD), steepest ascent design, and central composite design was developed to optimize the extraction of flavonoids. In addition, the tyrosinase activity inhibition of flavonoids was further tested in vitro. PBD results showed that ethanol concentration and number of extractions were key factors. Response surface methodology (RSM) indicated that the optimal extraction conditions were 78% ethanol concentration, six extraction times, 2 h, and 1:50 solid-liquid ratio. Under these conditions, the total flavonoid content could reach 35 mg/50 mL. In vitro tyrosinase experiment, the extracted total flavonoids had better inhibitory effect on tyrosinase activity than β-arbutin, and its inhibition rate for monophenolase and diphenolase exceeded 100% and 70%, respectively. These results indicate that RSM can effectively improve the extraction of flavonoids from Dendrobium officinale leaves and the flavonoids have the prospect of being applied to foods and cosmetics.
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Luca SV, Miron A, Aprotosoaie AC, Mihai CT, Vochita G, Gherghel D, Ciocarlan N, Skalicka-Woźniak K. HPLC-DAD-ESI-Q-TOF-MS/MS profiling of Verbascum ovalifolium Donn ex Sims and evaluation of its antioxidant and cytogenotoxic activities. PHYTOCHEMICAL ANALYSIS : PCA 2019; 30:34-45. [PMID: 30155925 DOI: 10.1002/pca.2788] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 07/04/2018] [Accepted: 07/08/2018] [Indexed: 06/08/2023]
Abstract
INTRODUCTION Plant species of Verbascum genus have been intensively investigated in the last decades but most studies focused on evaluation of their biological activities; there are only few studies dealing with their chemical characterisation. OBJECTIVE Detailed investigation of the qualitative and quantitative chemical composition, antioxidant and cytogenotoxic activities of a previously non-studied Verbascum species (V. ovalifolium Donn ex Sims). METHODS Qualitative analysis of secondary metabolites was performed by HPLC-DAD-ESI-Q-TOF-MS/MS, whereas quantitative data were obtained through HPLC-DAD. Antioxidant activity was evaluated using in vitro assays; cytotoxic and genotoxic effects were assessed by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium (MTT) and comet assays, respectively. RESULTS More than 50 secondary bioactive metabolites belonging to various classes (iridoids, phenylethanoids, flavonoids, phenolic acids) were detected in the methanolic extract of V. ovalifolium and its fractions. The fragmentation pathways of acylated catalpol-type iridoid diglycosides are thoughtfully described herein. The extracts showed good free radical scavenging and ferric ion reducing properties correlated with phenolic, flavonoid, chlorogenic acid and verbascoside contents. Moreover, 24 h treatment of SK-MEL-2 cells with V. ovalifolium extracts produced significant changes in terms of tumour cell viability. The crude extract and the ethyl acetate fraction showed no important signs of cytogenotoxicity in non-tumour cells. CONCLUSION The performed phytochemical and biological analyses contribute to the preclinical knowledge about V. ovalifolium and they could help exploiting it in novel herbal medicinal products.
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Affiliation(s)
- Simon Vlad Luca
- Department of Pharmacognosy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, Romania
| | - Anca Miron
- Department of Pharmacognosy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, Romania
| | - Ana Clara Aprotosoaie
- Department of Pharmacognosy, Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, Romania
| | - Cosmin-Teodor Mihai
- Institute of Biological Research/National Institute of Research and Development for Biological Sciences, Iasi, Romania
- Advanced Centre for Research and Development in Experimental Medicine (CEMEX), Grigore T. Popa University of Medicine and Pharmacy Iasi, Iasi, Romania
| | - Gabriela Vochita
- Institute of Biological Research/National Institute of Research and Development for Biological Sciences, Iasi, Romania
| | - Daniela Gherghel
- Institute of Biological Research/National Institute of Research and Development for Biological Sciences, Iasi, Romania
| | - Nina Ciocarlan
- Botanical Garden, Academy of Sciences of Moldova, Chisinau, Republic of Moldova
| | - Krystyna Skalicka-Woźniak
- Chair and Department of Pharmacognosy with Medicinal Plant Unit, Medical University of Lublin, Lublin, Poland
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Gontijo DC, Nunes LG, Farias LM, Duarte MGR, Carvalho AF, Fietto LG, Leite JPV. Assessment of the phenolic content, mutagenicity and genotoxicity of ethanolic extracts of stem bark and leaves from Strychnos pseudoquina A. St.-hil. Drug Chem Toxicol 2018; 43:539-545. [PMID: 30212238 DOI: 10.1080/01480545.2018.1515218] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Strychnos pseudoquina is a plant species whose stem bark is used as bitter tonic beverage. The phytochemical analysis, as well as quantification of phenolic constituents and antioxidant activity of ethanolic extracts from S. pseudoquina stem bark, and leaves were conducted. The extracts were tested for mutagenicity (Ames test) and DNA-damaging activity (Plasmid Cleavage test). Leaves recorded the largest amount of flavonoids. The performed high-performance liquid chromatography (HPLC) showed flavonoids such as isorhamnetin and strychnobiflavone (phytochemical markers of the investigated species) in stem barks, but not in leaves. The proanthocyanidin content and antioxidant activity were significantly higher in stem barks than in leaves. Stem bark and leaf extracts presented mutagenic activity against TA98 and TA100 strains with, and without, metabolic activation (S9). The Plasmid Cleavage test did not indicate DNA-damaging activity. Our results suggest that extracts deriving from S. pseudoquina should be used with extreme caution, mainly the stem bark extract, which is widely used in folk medicine.
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Affiliation(s)
- Douglas Costa Gontijo
- Departamento de Produtos Farmacêuticos, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.,Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - Líria Granato Nunes
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - Letícia Monteiro Farias
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | | | - André Furtado Carvalho
- Instituto de Ciências Agrárias, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Luciano Gomes Fietto
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - João Paulo Viana Leite
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, MG, Brazil
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Gontijo DC, Diaz MAN, Brandão GC, Gontijo PC, Oliveira ABD, Fietto LG, Leite JPV. Phytochemical characterization and antioxidant, antibacterial and antimutagenic activities of aqueous extract from leaves of Alchornea glandulosa. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:805-818. [PMID: 29999476 DOI: 10.1080/15287394.2018.1492479] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 06/19/2018] [Accepted: 06/20/2018] [Indexed: 06/08/2023]
Abstract
Plant extracts exist as a complex matrix which serves as a source of numerous bioactive metabolites. The ultra performance liquid chromatography with diode-array detection-coupled electrospray ionization-mass spectrometry/mass spectrometry technique was used to characterize the aqueous extract from leaves of Alchornea glandulosa (EAG), a species popularly used to treat gastrointestinal problems as an antiulcer agent. Quantification of phenolic derivatives was determined using Folin-Ciocalteu and aluminum trichloride (AlCl3) methods. In addition, antioxidant (2,2-diphenyl-1-picrylhydrazyl [DPPH•] radical scavenging, β-carotene-linoleic acid, and lipid peroxidation), antibacterial (agar well diffusion method and minimum inhibitory concentration), antimutagenic (Ames test), and antigenotoxic (plasmid cleavage) assays were also performed on this plant extract. The ellagitannin tris-galloyl-hexahydroxydiphenic acid-glucose was identified as the predominant compound along with tannins as majority metabolites. EAG showed high antioxidant activity accompanied by moderate antibacterial activity against Staphylococcus aureus. The highest antimutagenic activity was observed for TA97 strain without metabolic activation (S9) and with metabolic activation, TA100 and TA102 were completely inhibited. In addition, EAG exhibited potential signs of antigenotoxic action. The high antioxidant and antimutagenic activity observed for EAG suggests important therapeutic uses that still need to be verified in future studies.
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Affiliation(s)
- Douglas Costa Gontijo
- a Departamento de Produtos Farmacêuticos , Universidade Federal de Minas Gerais , Belo Horizonte , MG , Brazil
- b Departamento de Bioquímica e Biologia Molecular , Universidade Federal de Viçosa , Viçosa , MG , Brazil
| | - Marisa Alves Nogueira Diaz
- b Departamento de Bioquímica e Biologia Molecular , Universidade Federal de Viçosa , Viçosa , MG , Brazil
| | - Geraldo Célio Brandão
- c Escola de Farmácia , Universidade Federal de Ouro Preto , Ouro Preto , MG , Brazil
| | - Pablo Costa Gontijo
- d Departamento de Entomologia , Universidade Federal de Lavras , Lavras , MG , Brazil
| | - Alaíde Braga de Oliveira
- a Departamento de Produtos Farmacêuticos , Universidade Federal de Minas Gerais , Belo Horizonte , MG , Brazil
| | - Luciano Gomes Fietto
- b Departamento de Bioquímica e Biologia Molecular , Universidade Federal de Viçosa , Viçosa , MG , Brazil
| | - João Paulo Viana Leite
- b Departamento de Bioquímica e Biologia Molecular , Universidade Federal de Viçosa , Viçosa , MG , Brazil
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