Phytochemical Investigation and Antimicrobial Activities of Jordanian Psidium guajava Raw Fruit Peel Extract using Soxhlet and Microwave Extraction Methods

Conclusion: Optimization of the extraction method used is required in order to increase the content of the polar portion in the extract, which showed to have the highest antimicrobial activity. These data can be utilized in developing combined remedies composed of synthetic antibiotics with phytochemicals obtained from P. guajava peel extracts, which can be used for different purposes; such as functional food development and in food preservative.
Source: Research Journal of Medicinal Plant - Category: Complementary Medicine Source Type: research

Related Links:

Publication date: Available online 24 May 2018 Source:Journal of Materials Research and Technology Author(s): Y.A. Syed Khadar, A. Balamurugan, V.P. Devarajan, R. Subramanian, S. Dinesh Kumar Different concentrations (2, 4, 6, and 8 mole %) of cobalt doped cerium oxide nanoparticles (CeO2:Co NPs) were synthesized by hydrothermal method. The synthesized samples were characterized by using various techniques to understand their structural, optical and surface morphological properties. The face-centred cubic (FCC) structure of the CeO2:Co NPs was identified from the X-ray diffraction (XRD) analysis. The calculated crystallit...
Source: Journal of Materials Research and Technology - Category: Materials Science Source Type: research
Silver nanoparticles (SNPs) were synthesised by using the Arial part extract of Dorema ammoniacum D. and characterised by employing UV–visible spectroscopy, Fourier transform infrared spectroscopy and X-ray diffraction techniques. Transmission electron microscopy and field emission scanning electron microscopy were applied to investigate the morphological structure of the bio-synthesised SNPs. The antimicrobial activity of SNPs was studied against Gram positive (Bacillus cereus and Staphylococcus aureus) and Gram-negative (Escherichia coli and Salmonella typhimurium) bacteria by employing the disk diffusion agar proc...
Source: IET Nanobiotechnology - Category: Nanotechnology Source Type: research
Publication date: 1 August 2018 Source:Inorganica Chimica Acta, Volume 480 Author(s): Sara Abdolmaleki, Mohammad Ghadermazi, Morahem Ashengroph, Andisheh Saffari, Salime Moradi Sabzkohi Four coordination complexes, [2-mimH]2[Co(pydc)2][ClO4]. H2O (1), [2-mimH]2[Zr(pydc)3] (2), [imiH]2[Zr(pydc)3].4H2O (3) and [Ca(pydcH2)2(H2O)]2[Co(pydc)2]2·6H2O (4) have been prepared from the reaction between proton-transfer compounds containing pyridine-2,6-dicarboxylic acid (pydcH2) with 2-methylimidazole (2-mim) and imidazole (imi) in 1:2 M ratio and metal salts. These compounds have been characterized by spectroscopic methods...
Source: Inorganica Chimica Acta - Category: Chemistry Source Type: research
Publication date: October 2018 Source:Food Control, Volume 92 Author(s): K. Walia, A. Kapoor, J.M. Farber This qualitative risk assessment (QRA) aims to estimate the microbiological risk associated with the consumption of locally sourced cricket powder by infants and children aged 6–23 months to prevent or treat undernutrition in Siem Reap, Cambodia. It follows the Codex principles and guidelines for risk assessment and takes into account all the potential microbial and microbial related toxic hazards that are associated with the consumption of cricket powder. A comprehensive literature search was carried out for fo...
Source: Food Control - Category: Food Science Source Type: research
Publication date: Available online 20 April 2018 Source:Journal of Pharmaceutical Analysis Author(s): Hina Singh, Juan Du, Priyanka Singh, Tae Hoo Yi Silver nanoparticles (AgNPs) are known to have bacteriostatic and bactericidal effects. The present study highlights the extracellular synthesis of AgNPs and its antibacterial properties. The AgNPs are synthesized using Pseudomonas sp. THG-LS1.4, the strain has been isolated from soil. The AgNPs were characterized by field emission-transmission electron microscopy (FE-TEM), X-ray diffraction (XRD), fourier transform-infrared spectroscopy (FT-IR), and particle size distributi...
Source: Journal of Pharmaceutical Analysis - Category: Drugs & Pharmacology Source Type: research
Duquesne The aim of this study was to examine the influence of accelerated UV-aging on the activity against chosen microorganisms and the mechanical properties of poly-lactic acid (PLA) films enhanced with ZnO nanoparticles. The pure PLA films and tri-layered PLAZnO1%/PLA/PLAZnO1% films of 150 µm thickness were extruded. The samples were treated with UV-A and Q-SUN irradiation. After irradiation the antimicrobial activity and mechanical properties of the films were analyzed. The results of the study demonstrated that PLA films did not inhibit the growth of Staphylococcus aureus, Bacillus cereus, Escherichia coli,...
Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Article Source Type: research
MICROBIOLOGICAL SAFETY ASSESSMENT AND RISK MITIGATION OF INDIAN ROJAK (DEEP FRIED READYTO-EAT FOOD) IN SINGAPORE. Southeast Asian J Trop Med Public Health. 2016 Nov;47(6):1231-45 Authors: Aung KT, Lo JACY, Chau ML, Kang JSL, Yap HM, Gutiérrez RA, Yuk HG, Ng LC Abstract We conducted a microbiological assessment of Indian Rojak, a popular deep fried food in Singapore to evaluate its overall microbial quality, assess the effectiveness of reheating and identify key food items that could contribute to the microbial load of the dish. In 2009, an outbreak of foodborne illness associated with this food ...
Source: Southeast Asian Journal of Tropical Medicine and Public Health - Category: Tropical Medicine Tags: Southeast Asian J Trop Med Public Health Source Type: research
Publication date: Available online 11 April 2018 Source:Peptides Author(s): Charles G. Starr, Jerome L. Maderdrut, Jing He, David H. Coy, William C. Wimley Pituitary adenylate cyclase-activating polypeptide (PACAP) is a naturally occurring cationic peptide with potent immunosuppressant and cytoprotective activities. We now show that full length PACAP38 and to a lesser extent, the truncated form PACAP27, and the closely related vasoactive intestinal peptide (VIP) and secretin had antimicrobial activity against the Gram-negative bacteria Escherichia coli in the radial diffusion assay. PACAP38 was more potent than either the...
Source: Peptides - Category: Biochemistry Source Type: research
Abstract Foodborne diseases are a global concern. In Brazil, the most prevalent pathogen found in foodborne outbreaks is Salmonella sp. (14.4%), followed by Staphylococcus aureus (7.7%), Escherichia coli (6.5%), and Bacillus cereus (3.1%). With the aim to perform a regional detailed analysis of foodborne intoxication, we analyzed 253 outbreaks' profile reports to Food Surveillance team of the General Secretariat of Health Surveillance of Porto Alegre, Rio Grande do Sul State, between 2003 and 2013. In contrast to what was most notified in Brazil, in Porto Alegre the main outbreak agent identified was Bacillus cere...
Source: Cadernos de Saude Publica - Category: International Medicine & Public Health Authors: Tags: Cad Saude Publica Source Type: research
Conclusion: The results of the current study imply the presence of rare heat-resistant microorganisms in the soil of Gandom Beryan which may be further used to find out more about the function of natural bioactive compounds. Actinomycetes, as extremophile microorganisms, have shown the greatest genomic and metabolic diversity, as such the discovery of the novel Actinomycetes as a source of secondary metabolites is essential. PMID: 29487731 [PubMed]
Source: Iranian Journal of Microbiology - Category: Microbiology Tags: Iran J Microbiol Source Type: research
More News: Bacillus Cereus | Complementary Medicine | Gastroenteritis | Guava | Herbs | Jordan Health | Staphylococcus Aureus | Study