Composição química, atividade antibacteriana in vitro e toxicidade em Artemia salina do óleo essencial das inflorescências de Ocimum gratissimum L., Lamiaceae

Silva, Lenise L.; Heldwein, Clarissa G.; Reetz, Luiz Gustavo Brenner; Hörner, Rosmari; Mallmann, Carlos Augusto; Heinzmann, Berta Maria

doi:10.1590/s0102-695x2010005000010

Cited by 21 publications

(16 citation statements)

References 22 publications

(27 reference statements)

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“…O. gratissimum is a common culinary herb in West Africa. Its essential oil contains eugenol and shows some evidence of antibacterial activity [58, 59]. This compound has otherwise showed anti-insect activity, therefore supporting the use of the plant as insect repellent.…”

Section: Discussionmentioning

confidence: 99%

Ethnobotanical survey of medicinal plants used as insects repellents in six malaria endemic localities of Cameroon

Youmsi

Fokou

Menkem

et al. 2017

J Ethnobiology Ethnomedicine

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BackgroundThe combined efforts to combat outdoor/indoor transmission of malaria parasites are hampered by the emerging vector resistance in a wide variety of malaria-endemic settings of Africa and the rest of the world, stressing the need for alternative control measures. This study aimed at documenting insect’s repellent plant species used by indigenous populations of 6 localities of East, South, West and Centre regions of Cameroon.MethodsInformation was gathered through face-to-face interviews guided by a semi-structured questionnaire on the knowledge of medicinal plants with insect repellent properties.ResultsA total of 182 informants aged from 25 to 75 years were recruited by convenience from May to June 2015. The informants had general knowledge about insects’ repellent plants (78.6%). A total of 16 plant species were recorded as insects’ repellents with 50% being trees. The most cited plants were Canarium schweinfurthii (Burseraceae) (in four localities, 58/182), Elaeis guineensis (Arecaceae) (in three localities, 38/182), Chromolaena odorata (Compositae) (16/182) and Citrus limon (Rutaceae) (11/182) in two localities each. Among the repellent plant species recorded, 50% were reported to be burnt to produce in-house smokes, 31.2% were mashed and applied on the body, and 18.8% were hung in the houses. The leaf was the most commonly used plant part (52.9%), followed by the bark (17.6%).ConclusionsThis study has shown that rural populations of the 6 targeted localities possess indigenous knowledge on repellent plants that are otherwise cost-effective and better choice for repelling insects including malaria-transmitting mosquitoes. Meanwhile, such practices should be validated experimentally and promoted as sustainable malaria transmission control tools in the remotely located communities.Electronic supplementary materialThe online version of this article (doi:10.1186/s13002-017-0155-x) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Ethnobotanical survey of medicinal plants used as insects repellents in six malaria endemic localities of Cameroon

Youmsi

Fokou

Menkem

et al. 2017

J Ethnobiology Ethnomedicine

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“…O efeito biológico dos compostos fenólicos, como o eugenol, e das essências em geral é fácil ser observado nos experimentos, mas o mecanismo de ação ainda não é bem elucidado. Por via de regra, considera-se como início do mecanismo a degradação da parede celular, provocando danos à membrana proteica e citoplasmática, a interrupção da força motriz de prótons, o fluxo de elétrons e o transporte ativo, favorecendo a coagulação do citoplasma (Kotzekidouet al, 2008, Silva et al, 2010, Devi et al, 2010.…”

Section: Resultsunclassified

“…Uma das áreas de grande interesse é o uso de extratos de plantas e em particular os seus óleos essenciais, que além de possuírem atividades antimicrobianas, podem reduzir a expressão de fatores de virulência pelos microorganismos, como por exemplo, as enterotoxinas A e B e α-toxina produzidas por S. aureus (Smith-Palmer et al, 2004).…”

Section: Introductionunclassified

Potencial antimicrobiano dos óleos essenciais de cravo-da-índia (Syzygium aromaticum L.) e alfavacão (Ocimum gratissimum L.) em carne moída de ovinos contaminada experimentalmente com Staphylococcus aureus

Almeida¹,

Oliveira²,

Paulo³

et al. 2013

RBCV

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ResumoAvaliou-se o potencial antimicrobiano dos óleos essenciais de alfavacão (Ocimumgratissimum L.) e de cravo-da-índia (Syzygiumaromaticum L.) em carne moída de ovinos contaminadas experimentalmente com S. aureus ATCC 25923. Ambos os óleos em estudo foram utilizados na concentração de 400 µL/g, e nos tempos de exposição de zero, cinco, 15 e 60 minutos. Os óleos essenciais analisados apresentaram atividade antimicrobiana na presença matriz alimentar utilizada. O óleo essencial do cravo-da índia apresentou maior efeito inibitório no tempo de 60 minutos em relação aos demais tratamentos (p≤0,001), sugerindo que o aumento do tempo de exposição potencializou o efeito antimicrobiano.Palavras-chave: Ocimumgratissimum L. e Syzygiumaromaticum L., condimentos, produtos naturais. AbstractThe antimicrobial potential of the essential ails of alfavacão (Ocimum gratissimum L.) and indian clove (Syzygium aromaticum L.) were evaluated i in minced sheep meat experimentally infected with S. aureus ATCC 25923. Both of the oils under study were used study were used at a concentration of 400 microlitres/g, and the exposure times were zero, five, 15 and 60 minutes. The essential oils analyzed showed antimicrobial activity in the presence of the food matrix used. The essential oil of Indian clove showed greater inhibitory effect on the time of 60 minutes compared to the treatments (p ≤ 0.001), suggesting that increasing the exposure time enhances the antimicrobial efficacy of the product.Keywords: Ocimum gratissimum L., Syzygium aromaticumL., condiments, natural products. IntroduçãoAs indústrias alimentares e farmacêuticas demandam por uma busca contínua de novos e melhores agentes antimicrobianos, especialmente tendo em vista o aumento da resistência aos antibióticos convencionais. Uma das áreas de grande interesse é o uso de extratos de plantas e em particular os seus óleos essenciais, que além de possuírem atividades antimicrobianas, podem reduzir a expressão de fatores de virulência pelos microorganismos, como por exemplo, as enterotoxinas A e B e α-toxina produzidas por S. aureus (Smith-Palmer et al., 2004).Comparados ao uso de aditivos sintéticos, a utilização de plantas, especiarias, frutos e óleos essenciais com ação antimicrobiana ainda demandam pesquisas no que se refere aos seus efeitos na alimentação humana, ao odor marcante e ao alto custo para obtenção dos mesmos em escala comercial, conforme apresentado em uma ampla revisão literária descrita por Tajkarimiet al., (2010).Tendo em vista a importância que a culinária utilizando carne de ovinos tem alcançado no país, pelas suas características nutricionais e políticas de incentivos à produção desta proteína *Recebido em 12 de setembro de 2013 e aceito em 7 de janeiro de 2014.

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“…The Allium cepa L. has been widely used as a bioindicator organism in experiments (Egito et al, 2007;Abreu-Junior et al, 2019), as its roots grow quickly and it is quite sensitive to environmental changes, making its results comparable to those obtained with prokaryotes, lymphocytes test systems and ames test (Cabuga et al, 2017;Klauck et al, 2017;Fatma et al, 2018). The Artemia salina L. is also an organism widely used to assess toxicity levels, since it is highly sensitive and provides biological responses in a relatively short time (Villarroel et al, 2003), besides having a good correlation with in vivo acute oral toxicity tests (Silva et al, 2010).…”

Section: Introductionmentioning

confidence: 95%

Assessment of phytoremediation potencial of Allium cepa L. in raw sewage treatment

et al. 2020

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Abstract Whereas the effects of the substances found in domestic sewage on live organisms is important to evaluate the use of plants to remove pollutants from the environment. The objective of this study was to assess the phytoremediation activity of Allium cepa L. (onion) roots exposed to raw sewage, as well as the acute toxic activity of this effluent for the bioindicators A. cepa, through a cytotoxicity test, and Artemia salina L., through a mortality/immobility test. The physicochemical assessments of the sewage were conducted in two scenarios: immediately after collection and after being in contact with onion roots (phytoremediation) for 24 hours. The physicochemical data indicate there was a reduction in nitrogen and phosphorus levels and in biochemical oxygen demand in sewage treated. The results from the cytotoxicity test with A. cepa indicated a reduction in the mitotic cell divisions of the onions treated with the raw sewage. The mortality/immobility test with A. salina indicated that the concentrations with 50 and 100% of raw sewage induced the mortality of the nauplii. Thus, the data suggest new studies that seek greater efficiency, efficacy and viability of onion phytoremediation.

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Composição química, atividade antibacteriana in vitro e toxicidade em Artemia salina do óleo essencial das inflorescências de Ocimum gratissimum L., Lamiaceae

Cited by 21 publications

References 22 publications

Ethnobotanical survey of medicinal plants used as insects repellents in six malaria endemic localities of Cameroon

Ethnobotanical survey of medicinal plants used as insects repellents in six malaria endemic localities of Cameroon

Potencial antimicrobiano dos óleos essenciais de cravo-da-índia (Syzygium aromaticum L.) e alfavacão (Ocimum gratissimum L.) em carne moída de ovinos contaminada experimentalmente com Staphylococcus aureus

Assessment of phytoremediation potencial of Allium cepa L. in raw sewage treatment

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