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Antimicrobial effect plant extract

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https://www.readbyqxmd.com/read/28819625/antagonistic-properties-of-some-halophilic-thermoactinomycetes-isolated-from-superficial-sediment-of-a-solar-saltern-and-production-of-cyclic-antimicrobial-peptides-by-the-novel-isolate-paludifilum-halophilum
#1
Donyez Frikha Dammak, Ziad Zarai, Soumaya Najah, Rayed Abdennabi, Lassaad Belbahri, Mostafa E Rateb, Hafedh Mejdoub, Sami Maalej
This study has focused on the isolation of twenty-three halophilic actinomycetes from two ponds of different salinity and the evaluation of their ability to exert an antimicrobial activity against both their competitors and several other pathogens. From the 23 isolates, 18 strains showed antagonistic activity, while 19 showed activities against one or more of the seven pathogen strains tested. Six strains exhibited consistent antibacterial activity against Gram-negative and Gram-positive pathogens characterized at the physiological and molecular levels...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28816372/in-vitro-antitubercular-activity-of-3-deoxysappanchalcone-isolated-from-the-heartwood-of-caesalpinia-sappan-linn
#2
Hoonhee Seo, Sukyung Kim, Hafij Al Mahmud, Md Imtiazul Islam, Kung-Woo Nam, Byung-Eui Lee, Hanna Lee, Myoung-Lae Cho, Heung-Mook Shin, Ho-Yeon Song
Responsible for nearly 1.5 million deaths every year, the infectious disease tuberculosis remains one of the most serious challenges to global health. The emergence of multidrug-resistant tuberculosis and, more recently, extensively drug-resistant tuberculosis poses a significant threat in our effort to control this epidemic. New drugs are urgently needed to combat the growing threat of antimicrobial resistance. To achieve this goal, we screened approximately 500 species of medicinal plant methanol extracts and their solvent partitioned fractions for potential inhibitors of Mycobacterium tuberculosis growth...
August 17, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28816369/in-vitro-study-of-five-herbs-used-against-microbial-infections-in-burundi
#3
Jérémie Ngezahayo, Sofia Oliveira Ribeiro, Véronique Fontaine, Léonard Hari, Caroline Stévigny, Pierre Duez
The emergence of antimicrobial resistant infectious diseases remains a major threat to worldwide public health, in developed and in developing countries. Therefore, new antimicrobial agents acting by new mechanisms of action are urgently needed. As plants used in traditional medicine may help to overcome these problems, Justicia subsessilis, Platostoma rotundifolium, Pavetta ternifolia, Stomatanthes africanus, and Virectaria major (plants highly cited to be used against microbial infections in traditional Burundian medicine) were studied to assess their traditional use efficacy...
August 17, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28816181/antimicrobial-and-antiproliferative-activity-of-bauhinia-forficata-link-and-cnidoscolus-quercifolius-extracts-commonly-used-in-folk-medicine
#4
Erika P Alves, Rennaly de F Lima, Carolina M de Almeida, Irlan A Freires, Pedro L Rosalen, Ana Ltg Ruiz, Ana F Granville-Garcia, Gustavo P Godoy, Jozinete V Pereira, Edja Mm de Brito Costa
BACKGROUND: Bauhinia forficata and Cnidoscolus quercifolius plants are commonly used in folk medicine. However, few studies have investigated their therapeutic potential. AIM: Herein, we evaluated the antimicrobial activity of B. forficata and C. quercifolius extracts against microorganisms of clinical relevance and their antiproliferative potential against tumor cells. MATERIALS AND METHODS: The following tests were performed: Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC)/minimum fungicidal concentration (MFC), inhibition of biofilm adhesion, and effects on cell morphology...
August 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28810849/in-vitro-antiplasmodial-activity-and-prophylactic-potentials-of-extract-and-fractions-of-trema-orientalis-linn-stem-bark
#5
John Oludele Olanlokun, Oluwole Moses David, Anthony Jide Afolayan
BACKGROUND: Trema orientalis (T. orientalis Linn) has been used in the management of malaria in the western part of Nigeria and despite its application in ethnomedicine, there is dearth of scientific evidence to justify the acclaimed prophylactic antimalarial usage of the plant. The aim of this study is to assess the in vitro antiplasmodial cell-free assay and chemopreventive efficacy of the methanol extract of the stem bark of T. orientalis and its fractions as a prophylactic regimen for malaria prevention...
August 15, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28809799/update-on-monoterpenes-as-antimicrobial-agents-a-particular-focus-on-p-cymene
#6
REVIEW
Anna Marchese, Carla Renata Arciola, Ramona Barbieri, Ana Sanches Silva, Seyed Fazel Nabavi, Arold Jorel Tsetegho Sokeng, Morteza Izadi, Nematollah Jonaidi Jafari, Ipek Suntar, Maria Daglia, Seyed Mohammad Nabavi
p-Cymene [1-methyl-4-(1-methylethyl)-benzene] is a monoterpene found in over 100 plant species used for medicine and food purposes. It shows a range of biological activity including antioxidant, anti-inflammatory, antinociceptive, anxiolytic, anticancer and antimicrobial effects. This last property has been widely investigated due to the urgent need for new substances with antimicrobial properties, to be used to treat communicable diseases whose diffusion in developed countries has been facilitated by globalization and the evolution of antimicrobial resistance...
August 15, 2017: Materials
https://www.readbyqxmd.com/read/28808379/screening-of-fruits-of-seven-plants-indicated-for-medicinal-use-in-iraq
#7
Omar Aldulaimi
INTRODUCTION: Coumarins exert many biological effects in humans, animals, and plants, which make the evaluation of their biological activities and study of their role in ethnomedicine highly valued. OBJECTIVES: Here, we selected seven plants which have ethnopharmacological use as antimicrobial in Iraq and the aims were to quantify the two structural isomers bergapten and methoxsalen in their seeds, to evaluate the antibacterial activities against several clinical isolates, and to isolate bergapten and methoxsalen from Ammi majus...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28793029/chemical-composition-antimicrobial-and-antioxidant-potential-of-the-essential-oil-of-guarea-kunthiana-a-juss
#8
J A Pandini, F G S Pinto, M C Scur, C B Santana, W F Costa, L G Temponi
The essential oils are extracted from plant compounds and can present activities antimicrobial and antioxidant properties. The goals of the present study were: (a) to determine the chemical composition of the essential oil of Guarea kunthiana A. Juss using the method of gas chromatography coupled to mass spectrometry (GC-MS); (b) to evaluate the antimicrobial potential of this oil using the broth microdilution method against different microorganisms: five Gram-negative bacteria, four Gram-positive bacteria and a yeast and (c) to determine the antioxidant activity of the oil using the DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical assay...
July 27, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28781969/immunomodulatory-effects-of-taiwanese-neolitsea-species-on-th1-and-th2-functionality
#9
Yin-Hua Cheng, Ying-Chi Lin, Ih-Sheng Chen, Sian-De Liu, Jih-Heng Li, Chia-Chi Wang
Neolitsea species, medicinal plants belonging to Lauraceae, contain rich alkaloids, steroids, sesquiterpenoids, and triterpenoids which possess antimicrobial, antioxidant, and anti-inflammatory bioactivities. However, species differences in the immunomodulatory effects and evidence pertaining to the effects of Neolitsea species on adaptive immunity are scarce. This study aimed to evaluate the immunomodulatory properties of ten Taiwanese Neolitsea plants on T helper (Th) cell functionality, especially Th1 and Th2...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28774297/citrus-lemon-essential-oil-chemical-composition-antioxidant-and-antimicrobial-activities-with-its-preservative-effect-against-listeria-monocytogenes-inoculated-in-minced-beef-meat
#10
Anis Ben Hsouna, Nihed Ben Halima, Slim Smaoui, Naceur Hamdi
BACKGROUND: Lemon (Citrus limon) is a flowing plant belonging to the Rutaceae family. Citrus plants constitute one of the main valuable sources of essential oil used in foods and medicinal purposes. METHODS: In this study, we assessed chemical composition, antioxidant and antimicrobial activities of C. limon essential oil (ClEO) with its preservative effect against Listeria monocytogenes inoculated in minced beef meat. Gas chromatography/mass spectrometry (GC-MS) was used to identify the major components of the obtained ClEO...
August 3, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28767890/chemical-composition-antioxidant-and-antibacterial-activities-of-essential-oils-from-leaves-and-flowers-of-eugenia-klotzschiana-berg-myrtaceae
#11
Nárgella S Carneiro, Cassia C F Alves, José M Alves, Mariana B Egea, Carlos H G Martins, Thayná S Silva, Lizandra C Bretanha, Maira P Balleste, Gustavo A Micke, Eduardo V Silveira, Mayker L D Miranda
Many essential oils (EOs) of different plant species possess interesting antimicrobial effects on buccal bacteria and antioxidant properties. Eugenia klotzschiana Berg (pêra-do-cerrado, in Portuguese) is a species of Myrtaceae with restricted distribution in the Cerrado. The essential oils were extracted through the hydrodistillation technique using a modified Clevenger apparatus (2 hours) and chemically characterized by GC-MS. The major compounds were α-copaene (10.6 %) found in oil from leaves in natura, β-bisabolene (17...
July 31, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28766401/evaluation-of-a-pomegranate-peel-extract-pge-as-alternative-mean-to-control-olive-anthracnose
#12
Sonia Pangallo, Maria Giulia Li Destri Nicosia, Giovanni Enrico Agosteo, Ahmed Abdelfattah, Flora Valeria Romeo, Santa O Cacciola, Paolo Rapisarda, Leonardo Schena
Olive anthracnose is caused by different species of Colletotrichum spp. and may be regarded as the most damaging disease of olive fruits worldwide, greatly affecting quality and quantity of the productions. A pomegranate peel extract (PGE) proved very effective in controlling the disease. The extract had a strong in vitro fungicidal activity against Colletotrichum acutatum sensu stricto, was very effective in both preventive and curative trials with artificially inoculated fruit, and induced resistance in treated olive tissues...
August 2, 2017: Phytopathology
https://www.readbyqxmd.com/read/28764202/antimicrobial-effect-of-leaves-of-phyllanthus-niruri-and-solanum-nigrum-on-caries-causing-bacteria-an-in-vitro-study
#13
J Sunitha, Swathy Krishna, R Ananthalakshmi, J Sathiya Jeeva, As Smiline Girija, Nadeem Jeddy
INTRODUCTION: Solanum nigrum and Phyllanthus niruri are common herbs which are indigeneous to India. Solanum nigrum commonly called 'manathakkali Keerai' in Tamil, forms an indispensable part of South Indian diet. Phyllanthus niruri (keezhanelli in Tamil) is a widely used medicinal plant, the leaves of which have been used extensively in Ayurveda and native medicine to cure various liver ailments. The herbs Solanumnigrum and Phyllanthus niruri have been found to be effective against numerous enteropathogens in various in vitro studies...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28763985/increase-in-nitrite-content-and-functionality-of-ethanolic-extracts-of-perilla-frutescens-following-treatment-with-atmospheric-pressure-plasma
#14
Samooel Jung, Chul Woo Lee, Juri Lee, Hae In Yong, Su Jin Yum, Hee Gon Jeong, Cheorun Jo
This study investigated the effect of atmospheric pressure plasma (APP) treatment on nitrite content and functionality of plant extracts. Ethanolic extracts of Perilla frutescens (EEP) were prepared and treated with APP for 60min. Nitrite content increased from 0 to 45.8mg/l in EEP after APP treatment for 60min. Antimicrobial activity of EEP against Clostridium perfringens and Salmonella Typhimurium was increased by APP with no influence on antioxidative activity (p<0.05). Lyophilized EEP (LEEP) treated with APP for 60min contained 3...
December 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28762091/progress-in-the-chemistry-of-naturally-occurring-coumarins
#15
Satyajit D Sarker, Lutfun Nahar
Coumarins are the largest group of 1-benzopyran derivatives found in plants. The initial member of this group of compounds, coumarin (2H-1-benzopyran-2-one), a fragrant colorless compound, was first isolated from the Tonka bean (Dipteryx odorata, family Fabaceae) in 1820. The name coumarin comes from a French term for the tonka bean, coumarou. Since the discovery of coumarin, several of its derivatives, with umbelliferone (7-hydroxycoumarin) being the most common one, have been reported from various natural sources...
2017: Progress in the Chemistry of Organic Natural Products
https://www.readbyqxmd.com/read/28756155/formation-of-matricaria-chamomilla-extract-incorporated-ag-nanoparticles-and-size-dependent-enhanced-antimicrobial-property
#16
Esra Dogru, Ayse Demirbas, Berrak Altinsoy, Fatih Duman, Ismail Ocsoy
Various concentrations of Matricaria chamomilla (M. chamomilla) flower extract was used for biosynthesis of Ag NPs with different sizes, 70±5 (Ag NP-1), 52±5 (Ag NP-1) and 37±4nm (Ag NP-3), and size-specific antimicrobial activity of them was evaluated towards Gram+ Staphylococcus aureus (S. aureus), Gram- Escherichia coli (E. coli) bacteria and Candida fungus albicans (C. albicans). We also examine the formation of Ag NPs as a function of the plant extract volume, Ag ion concentration (Ag(+)) and reaction time...
July 24, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28752199/thymus-vulgaris-l-and-thymol-assist-murine-macrophages-raw-264-7-in-the-control-of-in-vitro-infections-by-staphylococcus-aureus-pseudomonas-aeruginosa-and-candida-albicans
#17
Jonatas Rafael de Oliveira, Leandro Wagner Figueira, Fábia Lugli Sper, Vanessa Marques Meccatti, Samira Esteves Afonso Camargo, Luciane Dias de Oliveira
Microorganisms are capable to combat defense cells by means of strategies that contribute to their stabilization and proliferation in invaded tissues. Frequently antimicrobial-resistant strains appear; therefore, alternative methods to control them must be investigated, for example, the use of plant products. The capacity of the thyme extract (Thymus vulgaris L.) and phytocompound thymol in the control of in vitro infections by Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans in murine macrophages (RAW 264...
August 2017: Immunologic Research
https://www.readbyqxmd.com/read/28735356/evaluation-of-anthelmintic-antimicrobial-and-antioxidant-activity-of-chenopodium-album
#18
Bashir A Lone, M Z Chishti, Fayaz Ahmad Bhat, Hidayatullah Tak, Suhaib A Bandh, Abida Khan
The objective of this study was to evaluate the anthelmintic, antimicrobial and antioxidant activities of Chenopodium album against gastrointestinal nematodes of sheep and some pathogenic microbes. A worm motility inhibition assay was used for in vitro study, and a faecal egg count reduction assay was used for an in vivo study. Various concentrations ranging from 100 to 500 μg/ml of the extract were subjected to antimicrobial screening by disc diffusion method against four selected bacterial (Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas multocida and Escherichia coli) and two fungal (Aspergillus flavus and Candida albicans) strains in order to estimate the medicinal potential of the herb...
July 22, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28725623/isolation-and-characterization-of-antimicrobial-compound-from-the-stem-bark-of-the-traditionally-used-medicinal-plant-adenium-obesum
#19
Mohammed Sohail Akhtar, Mohammad Amzad Hossain, Sadri Abdullah Said
BACKGROUND: Medicinal plants constitute a natural reservoir for medicines worldwide. They serve mainstream therapeutics and are central in folklore medicine. In case of Adenium obesum (Lav, Apocynaceae), indigenous people of Oman use it for the treatment of venereal diseases, wounds, skin diseases, headaches, muscle pain as well as joint pain; yet, the active ingredients have not been classified. To screened the antioxidant and antimicrobial activities of an identified compound that we isolated from the highest active chloroform extract...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28719862/green-biosynthesis-of-silver-nanoparticles-using-leaves-extract-of-artemisia-vulgaris-and-their-potential-biomedical-applications
#20
Tahir Rasheed, Muhammad Bilal, Hafiz M N Iqbal, Chuanlong Li
Biosynthesis of nanoparticles from plant extracts is receiving enormous interest due to their abundant availability and a broad spectrum of bioactive reducing metabolites. In this study, the reducing potential of Artemisia vulgaris leaves extract (AVLE) was investigated for synthesizing silver nanoparticles without the addition of any external reducing or capping agent. The appearance of blackish brown color evidenced the complete synthesis of nanoparticles. The synthesized silver nanoparticles were characterized by UV-vis spectroscopy, scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscope (TEM), atomic force microscopy (AFM) and Fourier transforms infrared spectroscopy (FT-IR) analysis...
July 8, 2017: Colloids and Surfaces. B, Biointerfaces
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