Screening of Plectranthus species for antibacterial activity

Rabe, T.; Staden, J. Van

doi:10.1016/s0254-6299(15)30834-6

Cited by 25 publications

(24 citation statements)

References 7 publications

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“…Various works have been carried out to identify the chemical constituents of the genus (Vera et al, 1993;Liu;Ruedi, 1996;Ngassoum et al, 2001;Abdel-Mogib et al, 2002;Kerntopf et al, 2002;Mendes et al, 2006), and to investigate their antioxidant (Burgi;Ruedi, 1993;Juch;Ruedi, 1997;Narukawa et al, 2001), antimicrobial (Rabe;Van Staden, 1998;Zollo et al, 1998;Mathpal et al, 2002;Rijo et al, 2002;Gaspar-Marques et al, 2006;Oliveira et al, 2007b) and pharmacological properties (Buznego;Perez-Saad, 1999;Cerqueira et al, 2004;Uawonggul et al, 2006). An extensive review of ethnobotanical uses of Plectranthus has been presented by Lukhoba et al (2006).…”

Section: Introductionmentioning

confidence: 99%

Stem and leaf anatomy of Plectranthus neochilus Schltr., Lamiaceae

Duarte¹,

Lopes²

2007

Rev. bras. farmacogn.

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RESUMO: "Anatomia caulinar e foliar de Plectranthus neochilus Schltr., Lamiaceae". Plectranthus neochilus Schltr. é uma erva aromática denominada boldo ou "boldo-gambá" e empregada no tratamento de insufi ciência hepática e dispepsia na medicina popular. Este trabalho investigou a anatomia caulinar e foliar, com a fi nalidade de contribuir na identifi cação dessa planta medicinal. O material botânico foi preparado de acordo com microtécnicas usuais. O caule tem secção transversal quadrangular e, em crescimento secundário no nível analisado, exibe epiderme unisseriada e numerosos tricomas. Os tricomas glandulares são capitados e peltados. Os primeiros têm pedicelo curto e unicelular ou longo e pluricelular e cabeça uni ou bicelular. Os peltados apresentam pedicelo curto e cabeça ovóide com oito células. Os tricomas tectores são pluricelulares, unisseriados e recobertos com cutícula granulosa. Observam-se colênquima angular, câmbio vascular formando fl oema em direção centrífuga e xilema para o centro, e calotas de fi bras perivasculares apostas ao fl oema. A lâmina foliar tem epiderme uniestratifi cada revestida por cutícula estriada, estômatos diacíticos em ambas as superfícies, numerosos tricomas similares aos do caule e mesofi lo homogêneo. A nervura central possui um ou dois feixes vasculares colaterais e o pecíolo apresenta vários feixes colaterais em arco aberto. Unitermos: Plectranthus neochilus, Lamiaceae, anatomia, boldo-gambá, tricomas.ABSTRACT: Plectranthus neochilus Schltr. is an aromatic herb named "boldo" or "boldogambá" and employed for treating hepatic insuffi ciency and dyspepsia in folk medicine. This paper has investigated its stem and leaf anatomy, in order to contribute for the medicinal plant identifi cation. The botanical material was prepared according to standard microtechniques. The stem has quadrangular transection and, in secondary growth at the level analyzed, shows uniseriate epidermis and numerous trichomes. The glandular ones are capitate and peltate. The former has short unicellular or long multicellular stalk and uni-or bicellular head. The latter presents short stalk and eight-celled ovoid head. The non-glandular trichomes are multicellular, uniseriate and coated with granular cuticle. It is observed angular collenchyma, cambia forming phloem outward and xylem inward, and perivascular fi ber caps next to the phloem. The blade has uniseriate epidermis coated with striate cuticle, diacytic stomata on both surfaces, numerous trichomes similar to the stem ones, and homogeneous mesophyll. The midrib shows one or two collateral bundles and the petiole has many of them distributed as an open arc.

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Section: Introductionmentioning

confidence: 99%

Stem and leaf anatomy of Plectranthus neochilus Schltr., Lamiaceae

Duarte¹,

Lopes²

2007

Rev. bras. farmacogn.

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“…The methanol extract of V. peduncularis showed the highest mean zone of inhibition (22.670 ±0.667 mm) and the lowest MIC (62.5 μg /mL) and MBC values (125.0 μg /mL) against S. aureus followed by M. luteus (21.670 ±0.667 mm; MIC (62.5 μg /mL). Bakht et al, 2012 (Rabe and van Staden, 1994). In the present study, the ethyl acetate extract of Plectranthus amboinicus was identified for its potential antimicrobial activity against all the microorganisms tested.…”

Section: Discussionmentioning

confidence: 68%

Antimicrobial activity of various extracts of Plectranthus ambionicus and Phyllanthus amarus

M¹,

Thamizhiniyan²

2016

jaar

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Hexane, chloroform, ethyl acetate and methanol extracts of leaves of Plectranthus ambionicus and Phyllanthus amarus were screened for their antimicrobial activity against human pathogenic bacterial and fungal strains. Antimicrobial activity was carried out by disc diffusion method, determination of minimum inhibitory concentrations (MIC), minimum bactericidal concentrations (MBC) and minimum fungicidal concentrations (MFC) against four strains of Gram positive bacteria, three strains of Gram negative bacteria and three species of fungi. The antimicrobial activity of various extracts of Plectranthus ambionicus and Phyllanthus amarus showed varied levels of antimicrobial activity against the studied bacterial and fungal pathogens. The mean zone of inhibition produced by all the tested extracts ranged from 7.0 ± 0.50 mm to 29.5 ± 0.50 mm. The MIC, MBC and MFC values were between 15.62 and 1000 μg/mL. The ethyl acetate extract of Plectranthus ambionicus showed good antimicrobial activity with the highest mean zone of inhibition (29.5±0.5 mm), lowest MIC (15.62 μg/mL) and MBC (31.25 μg/mL) values followed by ethyl acetate extract of Phyllanthus amarus (23.6±0.50 mm; MIC=62.5; MBC=125 μg/mL) against Aspergillus fumigates.

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“…Extracts from the leaves and the strongly oreganolike scented essential oils from this plant genus are also used against a variety of skin problems including burns, wounds, sores, insect bites, parasitic infections, and allergies [178,179], as well as an antiseptic dressing for wounds [180]. Some of these traditional uses may be explained by the presence in these plant species of monoterpenes and sesquiterpenes diterpenoids and phenolic compounds with, among others, antimicrobial, anti-inflammatory, and antioxidant properties [181,182].…”

Section: Plectranthus Amboinicus Lourmentioning

confidence: 99%

“A thing of beauty is a joy forever”. Plants and plant-based preparations for facial care in Suriname

Mans¹,

Grant²

2017

Clin Med Invest

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People have probably used plant-based substances to improve their appearance since the existence of mankind. The first documented use of cosmetics dates back to 3,000 BC from ancient Egypt, but it is safe to say that this custom has been (and still is) an integral part of daily life in all civilizations. The initial use of plantderived makeup -sometimes supplemented with paints and dyes -has come full circle and is back with the contemporary trend of using beauty products that are mainly derived from plant sources. The Republic of Suriname (South America) is renowned for its extensive ethnopharmacological knowledge and unique plant biodiversity that provides ample raw material that can be processed into cosmetics and cosmeceuticals. This paper gives some historical highlights on the use of makeup throughout the world with the emphasis on naturally-derived products; focuses on the herbal cosmetics industry in Suriname; extensively addresses the scientific rationale for incorporating extracts from plants in cosmetics and cosmeceuticals in the country; and concludes with the conditions to establish a beauty products industry in Suriname.

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Screening of Plectranthus species for antibacterial activity

Cited by 25 publications

References 7 publications

Stem and leaf anatomy of Plectranthus neochilus Schltr., Lamiaceae

Stem and leaf anatomy of Plectranthus neochilus Schltr., Lamiaceae

Antimicrobial activity of various extracts of Plectranthus ambionicus and Phyllanthus amarus

“A thing of beauty is a joy forever”. Plants and plant-based preparations for facial care in Suriname

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