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  1. Article ; Online: Seasonal Variability of a Caryophyllane Chemotype Essential Oil of Eugenia patrisii Vahl Occurring in the Brazilian Amazon

    Ellen de Nazaré S. da Cruz / Luana de Sousa Peixoto / Jamile S. da Costa / Rosa Helena V. Mourão / Walnice Maria O. do Nascimento / José Guilherme S. Maia / William N. Setzer / Joyce Kelly da Silva / Pablo Luis B. Figueiredo

    Molecules, Vol 27, Iss 2417, p

    2022  Volume 2417

    Abstract: Eugenia patrisii Vahl is a native and non-endemic myrtaceous species of the Brazilian Amazon. Due to few botanical and phytochemical reports of this species, the objective of the present work was to evaluate the seasonal variability of their leaf ... ...

    Abstract Eugenia patrisii Vahl is a native and non-endemic myrtaceous species of the Brazilian Amazon. Due to few botanical and phytochemical reports of this species, the objective of the present work was to evaluate the seasonal variability of their leaf essential oils, performed by GC and GC-MS and chemometric analysis. The results indicated that the variation in oil yields (0.7 ± 0.1%) could be correlated with climatic conditions and rainy (R) and dry seasons (D). ( E )-caryophyllene (R = 17.1% ± 16.0, D = 20.2% ± 17.7) and caryophyllene oxide (R = 30.1% ± 18.4, D = 14.1% ± 19.3) are the major constituents and did not display significant differences between the two seasons. However, statistically, a potential correlation between the main constituents of E. patrisii essential oil and the climatic parameters is possible. It was observed that the higher temperature and insolation rates and the lower humidity rate, which are characteristics of the dry season, lead to an increase in the ( E )-caryophyllene contents, while lower temperature and insolation and higher humidity, which occur in the rainy season, lead to an increase in the caryophyllene oxide content. The knowledge of variations in the E. patrisii essential oil composition could help choose the best plant chemical profile for medicinal purposes.
    Keywords Myrtaceae ; essential oil composition ; seasonal variation ; chemometrics ; sesquiterpenes ; Organic chemistry ; QD241-441
    Language English
    Publishing date 2022-04-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Chemical composition and in vitro biological activities of essential oil chemotypes of Licaria rigida (Kosterm.) Kosterm. (Lauraceae)

    Joyce Kelly Da Silva / Marcus Gomes / Noura Dosoky / José Guilherme Maia / William Setzer

    International Journal of Applied Research in Natural Products, Vol 9, Iss 3, Pp 1-

    2016  Volume 9

    Abstract: Summary. The essential oils (EOs) of leaves, twigs and bark of three specimens of Licaria rigida (Kosterm.) Kosterm. were obtained by hydrodistillation using a Clevenger-type apparatus and the chemical composition was determined by GC and GC-MS. The ... ...

    Abstract Summary. The essential oils (EOs) of leaves, twigs and bark of three specimens of Licaria rigida (Kosterm.) Kosterm. were obtained by hydrodistillation using a Clevenger-type apparatus and the chemical composition was determined by GC and GC-MS. The specimens showed different chemotypes characterized by phenylpropanoids, sesquiterpene hydrocarbons and oxygenated sesquiterpenes. The main compounds of chemotype I (LR1) were 6-methoxy-elemicin (39.6 – 63.3%) and selin-11-en-4α-ol (9.7 – 24.0%) in all plant parts. Chemotype II (LR2) was dominated by β-caryophyllene (76.1%) in leaves, caryophyllene oxide and 14-hydroxy-9-epi-β-caryophyllene in twigs; the chemotype III (LR3) showed δ-cadinene (10.53%), β-caryophyllene (9.73%) and β-bourbonene (9.44%) in the leaves and g-cadinene (12.0%) and terpinen-4-ol (10.7%) in barks. The LR1 essential of leaves displayed higher antioxidant activity by DPPH free radical method (718.1 ± 106.5 mg.TE.mL-1). The EOs oils of specimens LR2 and LR3 were submitted to cytotoxicity and antimicrobial screenings and the most cytotoxicity activity was found to EO of LR3-leaves (IC50 66.5 ± 4.4 µg.mL-1) against MCF-7 cells. In addition, the EOs displayed promising antimicrobial activity against Escherichia coli (MIC < 19.5 µg.mL-1). Industrial relevance. The wood of Licaria species from the Amazon are used lightweight constructions and luxury furniture. However, leaves, twigs and barks from these species are rejected by industry. Few studies have focused on the volatile compounds of Licaria rigida, which can be applied on large scale as antioxidant, antimicrobial and anticancer agents and promote a decrease in environment impacts in the Amazon region. Keywords. Lauraceae; 6-methoxy-elemicin; β-caryophyllene, sequiterpenes; DPPH; Escherichia coli.
    Keywords Lauraceae ; 6-methoxy-elemicin ; β-caryophyllene ; sequiterpenes ; DPPH ; Escherichia coli ; Pharmacy and materia medica ; RS1-441 ; Medicine ; R
    Subject code 580
    Language English
    Publishing date 2016-07-01T00:00:00Z
    Publisher Healthy Synergies Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Percepção de integrantes de um movimento social sobre suas condições de vida e saúde

    Joyce Kelly Da Silva Santos / Magaly Bushatsky / Gabriela Paula Dos Santos Andrade / Maynara Fernandes Gomes Da Silva / Mariana Boulitreau Siqueira Campos

    Revista Enfermagem Digital Cuidado e Promoção da Saúde, Vol 5, Iss 2, Pp 80-

    2020  Volume 87

    Abstract: Objetivo: Compreender a percepção de trabalhadoras rurais sobre as condições de vida e saúde antes e depois de integrarem um movimento social. Metodos: Estudo transversal, qualitativo, exploratório e interpretativo com dados coletados através de ... ...

    Abstract Objetivo: Compreender a percepção de trabalhadoras rurais sobre as condições de vida e saúde antes e depois de integrarem um movimento social. Metodos: Estudo transversal, qualitativo, exploratório e interpretativo com dados coletados através de entrevistas semi-estruturadas, analisadas e representadas através do Discurso do Sujeito Coletivo com mulheres do Movimento dos Trabalhadores Rurais Sem Terra. Resultados: Revelaram que as participantes da pesquisa perceberam mudanças nas condições de vida e de saúde ao integrar o movimento. considerações finais: Dessa forma, é possível perceber a melhoria na adesão de hábitos de vida saudável, em contrapartida, apontam alternativas pela dificuldade no acesso à saúde.
    Keywords população rural ; atenção primária à saúde ; necessidades e demandas de serviços de saúde ; Public aspects of medicine ; RA1-1270 ; Nursing ; RT1-120
    Language English
    Publishing date 2020-12-01T00:00:00Z
    Publisher Universidade de Pernambuco
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Essential Oils from Neotropical Piper Species and Their Biological Activities

    Joyce Kelly da Silva / Rafaela da Trindade / Nayara Sabrina Alves / Pablo Luís Figueiredo / José Guilherme S. Maia / William N. Setzer

    International Journal of Molecular Sciences, Vol 18, Iss 12, p

    2017  Volume 2571

    Abstract: The Piper genus is the most representative of the Piperaceae reaching around 2000 species distributed in the pantropical region. In the Neotropics, its species are represented by herbs, shrubs, and lianas, which are used in traditional medicine to ... ...

    Abstract The Piper genus is the most representative of the Piperaceae reaching around 2000 species distributed in the pantropical region. In the Neotropics, its species are represented by herbs, shrubs, and lianas, which are used in traditional medicine to prepare teas and infusions. Its essential oils (EOs) present high yield and are chemically constituted by complex mixtures or the predominance of main volatile constituents. The chemical composition of Piper EOs displays interspecific or intraspecific variations, according to the site of collection or seasonality. The main volatile compounds identified in Piper EOs are monoterpenes hydrocarbons, oxygenated monoterpenoids, sesquiterpene hydrocarbons, oxygenated sesquiterpenoids and large amounts of phenylpropanoids. In this review, we are reporting the biological potential of Piper EOs from the Neotropical region. There are many reports of Piper EOs as antimicrobial agents (fungi and bacteria), antiprotozoal (Leishmania spp., Plasmodium spp., and Trypanosoma spp.), acetylcholinesterase inhibitor, antinociceptive, anti-inflammatory and cytotoxic activity against different tumor cells lines (breast, leukemia, melanoma, gastric, among others). These studies can contribute to the rational and economic exploration of Piper species, once they have been identified as potent natural and alternative sources to treat human diseases.
    Keywords piperaceae ; neotropics ; antimicrobial ; cytotoxic ; antiprotozoal ; anticholinesterase ; anti-inflammatory ; analgesic ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Subject code 590
    Language English
    Publishing date 2017-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Chemical Diversity, Biological Activity, and Genetic Aspects of Three Ocotea Species from the Amazon

    Joyce Kelly da Silva / Rafaela da Trindade / Edith Cibelle Moreira / José Guilherme S. Maia / Noura S. Dosoky / Rebecca S. Miller / Leland J. Cseke / William N. Setzer

    International Journal of Molecular Sciences, Vol 18, Iss 5, p

    2017  Volume 1081

    Abstract: Ocotea species present economic importance and biological activities attributed to their essential oils (EOs) and extracts. For this reason, various strategies have been developed for their conservation. The chemical compositions of the essential oils ... ...

    Abstract Ocotea species present economic importance and biological activities attributed to their essential oils (EOs) and extracts. For this reason, various strategies have been developed for their conservation. The chemical compositions of the essential oils and matK DNA sequences of O. caudata, O. cujumary, and O. caniculata were subjected to comparison with data from O. floribunda, O. veraguensis, and O. whitei, previously reported. The multivariate analysis of chemical composition classified the EOs into two main clusters. Group I was characterized by the presence of α-pinene (9.8–22.5%) and β-pinene (9.7–21.3%) and it includes O. caudata, O. whitei, and O. floribunda. In group II, the oils of O. cujumary and O. caniculata showed high similarity due amounts of β-caryophyllene (22.2% and 18.9%, respectively). The EO of O. veraguensis, rich in p-cymene (19.8%), showed minor similarity among all samples. The oils displayed promising antimicrobial and cytotoxic activities against Escherichia coli (minimum inhibitory concentration (MIC) < 19.5 µg·mL−1) and MCF-7 cells (median inhibitory concentration (IC50) ≅ 65.0 µg·mL−1), respectively. The analysis of matK gene displayed a good correlation with the main class of chemical compounds present in the EOs. However, the matK gene data did not show correlation with specific compounds.
    Keywords Lauraceae ; volatile compounds ; terpenes ; matK gene ; phylogenetic analysis ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Subject code 540
    Language English
    Publishing date 2017-05-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Effect of arbuscular mycorrhizal fungi on the essential oil composition and antioxidant activity of black pepper (Piper nigrum L.)

    Shirlley F. M Da Luz / Laiany Reis / Oriel Lemos / José Guilherme Maia / Andrea De Mello / Alessandra Ramos / Joyce Kelly Da Silva

    International Journal of Applied Research in Natural Products, Vol 9, Iss 3, Pp 10-

    2016  Volume 17

    Abstract: Summary. Piper nigrum plants were inoculated by spores of arbuscular mycorrhizal fungi (AMF) and after 120 days, the essential oils (EO) and extracts of leaves and roots were obtained. The AMF inoculation promoted a decrease of sesquiterpene hydrocarbons ...

    Abstract Summary. Piper nigrum plants were inoculated by spores of arbuscular mycorrhizal fungi (AMF) and after 120 days, the essential oils (EO) and extracts of leaves and roots were obtained. The AMF inoculation promoted a decrease of sesquiterpene hydrocarbons (25.4% to 10.6%) and an increase of oxygenated sesquiterpenes (67.0% to 82.7%) in the leaf EO. In addition, an increase of the main compounds α-bisabolol (32.3% to 48.5%) and elemol (11.4% to 23.2%) was observed. However, in the roots EO the main compounds were monoterpenes as camphene, sabinene and limonene, which did not display variation. The leaf extract showed a significant variation in total phenolic content (6.8 ± 0.2 to 16.4 ± 1.0 mg AGE/g) and antioxidant activity (12.3 ± 2.0 to 73.7 ± 1.4 mg TE/g). The oils and extracts of the roots remained almost unchanged, suggesting that the inoculation with AMF induces a systemic response in P. nigrum and affects mainly the leaves. Industrial relevance. Piper nigrum essential oil is used as flavoring, antimicrobial and antioxidant agent in food preservation. These proprieties are attributed to the presence of the oxygenated sesquiterpenoids α-bisabolol and elemol, which displayed an increased its content after AMF inoculation. Keywords. Black pepper; AMF colonization; α-bisabolol; phenolic compounds; antioxidant activity
    Keywords Black pepper ; AMF colonization ; α-bisabolol ; phenolic compounds ; antioxidant activity ; Pharmacy and materia medica ; RS1-441 ; Medicine ; R
    Subject code 580
    Language English
    Publishing date 2016-07-01T00:00:00Z
    Publisher Healthy Synergies Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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