The Antimicrobial Activities of <i>Psidium guajava</i> and <i>Juglans regia</i> Leaf Extracts to Acne-Developing Organisms

Qadan, Fadi; Thewaini, Abdul-Jalil; Ali, Dalia A.; Afifi, Rana O.; Elkhawad, Abdalla Omer; Matalka, Khalid Z.

doi:10.1142/s0192415x05002783

Cited by 98 publications

(68 citation statements)

References 13 publications

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“…This could provide an explanation for our results [10,21]. Inhibitory effects of acetone leaf extracts showed similar results to those of other studies [6,10,22].…”

Section: Discussionsupporting

confidence: 92%

“…Psidium guajava juice has also been used as a hypoglycemic agent [4]. Studies on the antimicrobial effect of guava have been carried mainly on extracts of leaves, shoots and barks, as well as seeds [5,6,7,8,9]such extracts have also been found to inhibit the growth of drug resistant microbes such as V. cholera [10]and to act synergistically with existing antibiotics to treat the pathogenic Staphylococcus aureus [11]as well as other food pathogens [5,6,7,11,12], or in improving oral hygiene and inhibiting biofilm formation by Streptococcus mutant [13].…”

Section: Introductionmentioning

confidence: 99%

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Peels of Psidium Guajava Fruit Possess Antimicrobial Properties

Abdelmalek

Mohsen

Awad

et al. 2016

int. arab. j antimicrob. agents

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Objective: Psidium guajava (guava) leaf extracts have been extensively studied for their antimicrobial effect. Yet, very few studies investigated the antimicrobial effect of the ripe guava fruit. This study aims at examining aqueous extracts of ripe Psidium guajava fruit, bulb, seeds and peels (harvested in autumn at Jordan River valley). Materials and methods:Decreasing concentrations of water extracts of three parts of the fruit were tested against Gram positive and Gram negative bacteria as well as the yeast Saccharomyces cerevesea using the agar diffusion method. Clinical isolates of methicillin resistant Staphylococcus aureus (MRSA) were also included.Results: Water extracts of Guava peels at concentrations ≥ 10% were inhibitory to coagulase positive S. aureus and MRSA strains, and at ≥1% were inhibitory to coagulase negative Staphylococci. Water extracts of peels acted synergistically with cell wall synthesis inhibitor antibiotics towards S. aureus and MRSA strains used. HPLC-MS-MS analysis through ion trap and subsequent fragmentation of the isolated ions from peels water extracts allowed the clear identification of two wellknown phenolic compounds that are known for their antimicrobial activity: Gallic acid (957.6 μg/mL) and Ferulic acid(13 μg/mL). Conclusion:The ripe fruit of Guava is a nutritionally rich fruit with an outer covering that possess antimicrobial properties.

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“…This could provide an explanation for our results [10,21]. Inhibitory effects of acetone leaf extracts showed similar results to those of other studies [6,10,22].…”

Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Peels of Psidium Guajava Fruit Possess Antimicrobial Properties

Abdelmalek

Mohsen

Awad

et al. 2016

int. arab. j antimicrob. agents

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show abstract

mentioning

confidence: 99%

“…In vitro studies on plants used in traditional medicine have been carried out in the field of microbiology, especially on pathogenic bacterial growth; and some of these studies were about the antimicrobial activity of Mikania glomerata Spreng ("guaco") (Boyayan 2002, Holetz et al 2002, Psidium guajava L (guava) (Gnan & Demello 1999, Jaiarj et al 1999, Nascimento et al 2000, Ahmad & Beg 2001, Abdelrahim et al 2002, Holetz et al 2002, Voravuthikunchai et al 2004, Qadan et al 2005 (Ankri & Mirelman 1999, Ahmad & Beg 2000, Srinivasan et al 2001, Benkeblia 2004, Zingiber officinale Roscoe (ginger) (Silva Junior et al 1994, Konning et al 2004, Cymbopogon citratus (DC) Stapf (lemongrass) (Cimanga et al 2002, Di Stasi & HirumaLima 2002, Mentha piperita L (mint) (Silva Junior et al 1994, Tassou et al 2000, and Baccharis trimera (Less.) DC ("carqueja") (Avancini et al 2000).…”

mentioning

confidence: 99%

Synergism between plant extract and antimicrobial drugs used on Staphylococcus aureus diseases

Betoni¹,

Mantovani²,

Barbosa³

et al. 2006

Mem. Inst. Oswaldo Cruz

282

160

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Searches for substances with antimicrobial activity are frequent, and medicinal plants have been considered interesting by some researchers since they are frequently used in popular medicine as remedies for many infectious diseases. The aim of this study was to verify the synergism between 13 antimicrobial drugs and 8 plant extracts -"guaco" (Mikania glomerata), guava (Psidium guajava), clove (Syzygium aromaticum), garlic (Allium sativum), lemongrass (Cymbopogon citratus), ginger (Zingiber officinale), "carqueja" (Baccharis trimera), and mint (Mentha piperita) -against Staphylococcus aureus strains, and for this purpose, the disk method was the antimicrobial susceptibility test performed. Petri dishes were prepared with or without dilution of plant extracts at sub-inhibitory concentrations in Mueller-Hinton Agar (MHA) In a constant attempt to improve their quality of life, men have used plants as source of food, shelter, clothing, medicine, cosmetics, and for seeking relief from hardship of life. Some plants are known as medicinal because they contain active substances that cause certain reactions, from relenting to the cure of diseases, on the human organism (Silva Junior et al. 1994). Knowledge on medicinal plants sometimes means the only therapeutic resource of some communities and ethnic groups (Di Stasi 1996); and their use, especially in South America, contributes significantly to primary health care (Holetz et al. 2002). Infectious diseases still represent an important cause of morbidity and mortality among humans, especially in developing countries. Even though pharmaceutical industries have produced a number of new antimicrobial drugs in the last years, resistance to these drugs by microorganisms has increased. In general, bacteria have the genetic ability to transmit and acquire resistance to drugs used as therapeutic agents (Nascimento et al. 2000).In vitro studies on plants used in traditional medicine have been carried out in the field of microbiology, especially on pathogenic bacterial growth; and some of these studies were about the antimicrobial activity of Mikania glomerata Spreng ("guaco") (Boyayan 2002, Holetz et al. 2002, Psidium guajava L (guava) (Gnan & Demello 1999, Jaiarj et al. 1999, Nascimento et al. 2000, Ahmad & Beg 2001, Abdelrahim et al. 2002, Holetz et al. 2002, Voravuthikunchai et al. 2004, Qadan et al. 2005, Syzygium MATERIALS AND METHODSPlant samples -M. glomerata, P. guajava, B. trimera, M. piperita, and C. citratus samples were collected in 2004 from an experimental field of the School of Agronomical Sciences, Unesp, Botucatu, São Paulo, Brazil, and the voucher specimens were deposited at the Herbarium of the Department of Botany, Institute of Biosciences, Unesp. Their leaves were dried at 40 o C and triturated in a mechanical mill. A. sativum, S. aromaticum, and Z. officinale samples were obtained from the local commerce in the same year and were used in natura for the extracts preparation. Preparation of plant extracts -Plant material, dried (M. glomerata, P. guajava, B. ...

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“…Leaf extract of the walnut showed, J. regia L., showed that they both had contact and systemic toxicity acaricidal activity on the mites Tetranychus cinnabarinus (Boisduval) and Tetranychusviennensis Zacher (Acari: Tetranychidae) [40]. J. regia leaves composed of terpenes, hydrocarbons, esters, flavonoids and phenolic compounds [41]. It was revealed that phenolic compounds such as tannins, flavanols and flavonoids were toxic to bacteria, fungi and insects [42].…”

Section: Effect On Egg Laying Capacitymentioning

confidence: 99%

Acaricidal Activity of Extracts of Juglans regia L. on Tetranychus urticae Koch (Acari: Tetranychidae)

Erdoğan¹,

Yılmaz²

2017

JFSE

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Two-spotted spider mite (Tetranychus urticae Koch) (Acari: Tetranychidae) is a very serious pest worldwide, causing considerable damage to vegetables, flowers and fruit crops. The application of plant extracts to control insects can be an effective alternative. In this study, the efficacy of an extract from Juglans regia L. (Juglandecaea) was tested as an alternative to conventional acaricides. Using two different methods, bioassays were used to determine the effects of varying concentrations J. regia (1%, 3%, 6%, 12%) of the extracts. Experiments were carried out using 3 cm diameter leaf disks of Phaseolus vulgaris L. In addition, the effects of the extract on mite reproduction and oviposition were investigated. As a result, in the leaf dipping method, the 12% concentration of the extract caused the highest mortality of nymph (90%) and adult (83.00%) stages. For the spraying method, the mortality of adults at the same concentration was 100%. In bioassays at lower concentrations, the adult mites laid lower numbers of eggs in comparison to the untreated mites. The highest effect occurred at concentration of 12% and the lowest effect was at 1%. The extract was no observed ovicidal effect.

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The Antimicrobial Activities of Psidium guajava and Juglans regia Leaf Extracts to Acne-Developing Organisms

Cited by 98 publications

References 13 publications

Peels of Psidium Guajava Fruit Possess Antimicrobial Properties

Peels of Psidium Guajava Fruit Possess Antimicrobial Properties

Synergism between plant extract and antimicrobial drugs used on Staphylococcus aureus diseases

Acaricidal Activity of Extracts of Juglans regia L. on Tetranychus urticae Koch (Acari: Tetranychidae)

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