Composition and antimicrobial activity of essential oils from aromatic plants used in Brazil

Sartoratto, Adilson; Machado, Ana Lúcia M.; Delarmelina, Camila; Figueira, Glyn Mara; Duarte, Marta Cristina Teixeira; Rehder, Vera Lúcia Garcia

doi:10.1590/s1517-83822004000300001

Cited by 507 publications

(377 citation statements)

References 18 publications

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“…The antimicrobial activity of essential oil and extracts was determined using the broth microdilution method proposed by Sartoratto et al (2004), and plant extract by Ayres et al (2008).…”

Section: Antimicrobial Activitymentioning

confidence: 99%

Antimicrobial and antioxidant activity of essential oil and different plant extracts of Psidium cattleianum Sabine

et al. 2016

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The goals of the study were to determine: the antimicrobial and antioxidant activities of essential oil and plant extracts aqueous and ethanolic of Psidium cattleianum Sabine; the chemical composition of the essential oil of P. cattleianum; and the phytochemical screening of aqueous and ethanolic extracts of the same plant. Regarding the antimicrobial activity, the ethanolic extract exhibited moderate antimicrobial activity with respect to bacteria K. pneumoniae and S. epidermidis, whereas, regarding other microorganisms, it showed activity considered weak. The aqueous extract and the essential oil showed activity considered weak, although they inhibited the growth of microorganisms. About the antioxidant potential, the ethanolic and aqueous extracts exhibited a scavenging index exceeding 90%, while the essential oil didn´t show significant antioxidant activity. Regarding the phytochemical composition, the largest class of volatile compounds identified in the essential oil of P. cattleianum included the following terpenic hydrocarbons: α-copaene (22%); eucalyptol (15%), δ-cadinene (9.63%) and α-selinene (6.5%). The phytochemical screening of extracts showed the presence of tannins, flavonoids, and triterpenoids for aqueous and ethanolic extracts. The extracts and essential oils inhibit the growth of microrganisms and plant extracts showed significant antioxidant activity. Also, the phytochemical characterization of the essential oil showed the presence of compounds interest commercial, as well as extracts showed the presence of important classes and compounds with biological activities.Keywords: Psidium cattleianum, antimicrobial action, microdilution, GC-MS, antioxidant activity. Atividade antimicrobiana e antioxidante do óleo essencial e diferentes extratos vegetais de Psidium cattleianum Sabine ResumoOs objetivos do trabalho foram determinar: as atividades antimicrobiana e antioxidante do óleo essencial e dos extratos vegetais aquoso e etanólico de Psidium cattleianum Sabine; a composição química do óleo essencial P. cattleianum e a triagem fitoquímica dos extratos vegetais aquoso e etanólico da mesma planta. Quanto à atividade antimicrobiana, o extrato etanólico apresentou atividade antimicrobiana moderada frente as bactérias K. pneumonieae e S. epidermidis, enquanto frente aos demais micro-organismos apresentou atividade considerada fraca. O extrato aquoso e o óleo essencial apresentaram atividade considerada fraca, embora tenham inibido o crescimento dos micro-organismos. Em relação ao potencial antioxidante, os extratos etanólico e aquoso apresentaram índice de sequestro superior a 90%, enquanto o óleo essencial não apresentou atividade antioxidante significativa. Para a composição fitoquímica, a maior classe de compostos voláteis identificados no óleo essencial de P. cattleianum foram os hidrocarbonetos terpênicos, sendo eles: α-copaeno (22%), eucaliptol (15%), δ-cadineno (9,63%) e α-selineno (6,5%). Na triagem fitoquímica dos extratos verificou-se a presença de taninos, flavonóides e triterpenói...

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“…The antimicrobial activity of essential oil and extracts was determined using the broth microdilution method proposed by Sartoratto et al (2004), and plant extract by Ayres et al (2008).…”

Section: Antimicrobial Activitymentioning

confidence: 99%

Antimicrobial and antioxidant activity of essential oil and different plant extracts of Psidium cattleianum Sabine

et al. 2016

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“…A planta apresenta inúmeros compostos, sendo o eugenol o composto majoritário (Ueda-Nakamura et al, 2006;Sartoratto et al, 2004;Lorenzi & Matos, 2002;Ilori et al, 1996).…”

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“…Estes compostos podem ser responsáveis por atributos carcinogênicos, teratogênicos e também apresentar toxicidade residual (Moreira et al, 2005). Outro fator relevante para a busca por conservantes naturais é que muitos microrganismos patogênicos adquirem resistência aos antibióticos, havendo a necessidade de serem substituídos por produtos de origem natural (Sartoratto et al, 2004). Estudos vêm sendo realizados para avaliar a atividade antimicrobiana e antifúngica de plantas medicinais (Chah et al, 2006;Faria et al, 2006).…”

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“…Estudos vêm sendo realizados para avaliar a atividade antimicrobiana e antifúngica de plantas medicinais (Chah et al, 2006;Faria et al, 2006). Ocimum gratissimum, por sua vez, apresenta esta propriedade conservante devido às substâncias encontradas em seu óleo essencial tais como: cimen-8-ol, eugenol e trans-cariofileno, entre outras (Sartoratto et al, 2004;Nguefack, 2004;Nakamura et al, 1999;Ilori et al, 1996). Orafidiya et al, (2002) descrevem atividade antibacteriana em formulações com óleo essencial de Ocimum gratissimum utilizadas como antissépticas no tratamento de feridas ou lesões com solução de continuidade.…”

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“…Este composto apresenta uma série de atributos farmacológicos tais como: agente aromático para alimentos, anticonvulsivo, anestésico, analgésico dentário, antibactericida e fungicida (Ueda-Nakamura, 2006; Sartoratto et al, 2004;Lorenzi & Matos; Talos, folhas e flores da planta foram submetidos aos processos de extração alcoólica (a lc o o la t ur a / pla nt a i n n a tu ra ), e xt ra ç ã o hidroalcóolica (hidroalcoolatura/planta seca) e decocção (planta seca e in natura) para obtenção das soluções conservantes ou antibacterianas, se gundo Fa rma co péi a (195 9). As a mo stras v e ge t a i s re c é m c o lhi da s f o ra m t ri t ura da s grosseiramente e colocadas em álcool etílico, de cereais (Farmaquímica, Porto Alegre/RS/BR) a 96ºGL, na proporção de 400 g de planta para 1000 mL de álcool, na extração alcoólica.…”

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Inibição e inativação in vitro de diferentes métodos de extração de Ocimum gratissimum L. ("alfavacão", "alfavaca", "alfavaca-cravo") - Labiatae (Lamiaceae), frente a bactérias de interesse em alimentos

Passos

Carvalho

Wiest

2009

Rev. bras. plantas med.

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Inibição e inativação in vitro de diferentes métodos de extração de Ocimum gratissimum L. ("alfavacão", "alfavaca", "alfavaca-cravo") -Labiatae (Lamiaceae), frente a bactérias de interesse em alimentos Palavras-chave: Ocimum gratissimum, atividade antibacteriana, inibição bacteriana, inativação bacteriana, extratos vegetais ABSTRACT:In vitro inhibition and inactivation of different extraction methods in Ocimum gratissimum L. ("alfavacão", "alfavaca", "alfavaca-cravo") -Labiatae (Lamiaceae) against foodborne bacteria of interest. Dilution tests in multiple tube system were used to evaluate the intensity of bacterial inhibition activity (IINIB/bacteriostasis) and bacterial inactivation activity (IINAB/ bactericide) of conserver solutions containing ethanolic (alcoholature/in natura plant, hidroalcoholature/dry plant) and aqueous (decoctions/in natura or dry plant) extracts of Ocimum gratissimum L. ("alfavacão", "alfavaca", "alfavaca-cravo") -Labiatae -(Lamiaceae) on standardized inocula of Salmonella enteritidis (ATCC 11076), Escherichia coli (ATCC 11229) and Staphylococcus aureus (ATCC 25923). All the different extraction methods presented selective inhibition and/or inactivation on the bacterial inocula. The alcoholic extract had the highest antibacterial activity (inhibition/inactivation) against the three agents. Salmonella enteritidis was the most sensitive to the antibacterial activity in all conserver solutions. Staphylococcus aureus showed the lowest sensitivity to decoctions, whereas Escherichia coli was the least sensitive to the hydroalcoholic extraction.

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A detailed experimental and computational study of Cd complexes with pyridyl‐based thiazolyl hydrazones

Kokanov

Filipović

Višnjevac

et al. 2022

Applied Organom Chemis

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Interest in Cd complexes has been growing in recent years. Cd complexes are considered a potential solution in the search for novel antibiotics that can fight antimicrobial resistance. In addition, Cd complexes draw attention to material chemistry. The main objective of this work was to prepare the first Cd(II) complexes with anionic forms of pyridine‐based thiazolyl hydrazone (THs) ligands HLS2 [(E)‐4‐(4‐methoxyphenyl)‐2‐(2‐[pyridine‐2‐ylmethylene]hydrazinyl)thiazole] and HLS3 [(E)‐2‐(2‐[pyridine‐2‐ylmethylene]hydrazinyl)‐4‐(p‐tolyl)thiazole] and perform their structural and spectroscopic characterization, as well as stability in solution and upon heating. Studies related to their biological activities and possible electrochromic applications are also being conducted. Complexes [Cd(HLS2)2] (1) and [Cd(HLS3)2] (2) have been characterized by a single‐crystal X‐ray diffraction and computational analysis of intermolecular interactions responsible for their solid‐state structures was performed. Thermal stability of 1 and 2 in the solid‐state was analyzed by TGA/MS, where as their solution stability was determined by the spectrophotometric titration method. Electrochemical and in situ UV–Vis spectroelectrochemical analyses of 1 and 2 were carried out to determine redox mechanisms and the influence of the substituents and electrolytes on their redox responses. The antioxidant capacity of both complexes was tested in antioxidant assays, while their antimicrobial activity was tested against five Gram‐positive and four Gram‐negative bacteria, as well as against three fungi. The obtained results indicate their potent antioxidant capacity. The antimicrobial activity of investigated compounds on almost all tested bacterial strains was stronger than that of the standard antibiotic erythromycin. The results of docking studies indicate that the minor groove DNA is the possible biological target of 1 and 2.

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Composition and antimicrobial activity of essential oils from aromatic plants used in Brazil

Cited by 507 publications

References 18 publications

Antimicrobial and antioxidant activity of essential oil and different plant extracts of Psidium cattleianum Sabine

Antimicrobial and antioxidant activity of essential oil and different plant extracts of Psidium cattleianum Sabine

Inibição e inativação in vitro de diferentes métodos de extração de Ocimum gratissimum L. ("alfavacão", "alfavaca", "alfavaca-cravo") - Labiatae (Lamiaceae), frente a bactérias de interesse em alimentos

A detailed experimental and computational study of Cd complexes with pyridyl‐based thiazolyl hydrazones

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