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

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Bahk Climatic factors can affect the incidence of foodborne diseases (FBDs). Moreover, microbial network inference is useful for predicting the interrelationships between the incidence of FBDs and climatic factors. However, the interrelationships between FBD pathogens and most climatic factors are unknown. Using principal component analysis (PCA) and partial correlation coefficient matrices (PCCMs), we determined the intra-ecosystem interrelationship network of the multiple combined effects of 5 climatic factors (temperature, relative humidity, rainfall, insolation, and cloudiness) and the monthly incidences of 12 bac...
Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Article Source Type: research
In this study, antimicrobial, anti-quorum sensing and anti-biofilm forming activities of phenolic-enriched extracts produced by enzyme-assisted extraction from oven-dried and lyophilized black grape (Vitis vinifera x (Vitis labrusca x Vitis riparia)), apple (Malus domestica cv. Jonagold) and yellow pitahaya (Hylocereus megalanthus) residues were investigated. Both disk-diffusion and minimal inhibitory concentration (MIC) assays showed increased antimicrobial capacity for many extracts after the carbohydrase treatments. The lowest MIC (12.5 mg/mL) was found for black grape samples against Bacillus cereus and Bacillus subt...
Source: LWT Food Science and Technology - Category: Food Science Source Type: research
In this study, we successfully developed two novel antimicrobial peptides (AMPs), named crab-ALF2A and crab-ALF6A, which contain changes to the amino acid sequences of the lipopolysaccharide binding domain and signal peptide, respectively, of the ALF of the swimming crab Portunus trituberculatus. The crab-ALF2A peptide showed potent antimicrobial activity against the Gram-positive bacteria Bacillus cereus, Staphylococcus aureus, and Streptococcus iniae (minimal effective concentration [MEC] 1.51–1.93 μg/mL) and the Gram-negative bacteria Pseudomonas aeruginosa and Escherichia coli (MEC 1.87–1.98 μg/mL...
Source: Fish and Shellfish Immunology - Category: Biology Source Type: research
This study focused on the utilisation of Streptomyces isolate S12 purified from waste discharge soil in the biological synthesis of silver (Ag), selenium (Se), and zinc oxide (ZnO) NPs. The isolate S12 was related to Streptomyces enissocaesilis according to 16S rRNA sequence analysis, morphological characteristics, and biochemical reactions. The cell-free supernatant has been used for the synthesis of Ag, Se, and ZnO NPs. The synthesised NPs were characterised using ultraviolet–visible spectroscopy, dynamic light scattering (DLS), transmission electron microscopy, and Fourier transform infrared spectroscopy. The biog...
Source: IET Nanobiotechnology - Category: Nanotechnology Source Type: research
Publication date: 1 November 2018Source: Journal of Molecular Liquids, Volume 269Author(s): Alla B. Mirgorodskaya, Rushana A. Kushnazarova, Svetlana S. Lukashenko, Alexandra D. Voloshina, Oxana A. Lenina, Lucia Ya. Zakharova, Oleg G. SinyashinAbstractHerein novel cationic carbamate-bearing surfactants have been synthesized and characterized as effective building blocks for the development of polyfunctional nanosystems showing solubilizing, antimicrobial and membrane-tropic activity. For this purpose aggregation behavior of the surfactants has been evaluated, with the structure of head group and hydrophobicity varied. Their...
Source: Journal of Molecular Liquids - Category: Molecular Biology Source Type: research
ConclusionThe results suggest that these plants are potential sources of antioxidants with free radicals-scavenging and antiglycation activities and could be useful for decreasing the oxidative stress and glycation end-products formation in glycation-related diseases.Please cite this article as: Moe TS, Win HH, Hlaing TT, Lwin WW, Htet ZM, Mya KM. Evaluation of in vitro antioxidant, antiglycation and antimicrobial potential of indigenous Myanmar medicinal plants. J Integr Med. 2018; Epub ahead of print.
Source: Journal of Integrative Medicine - Category: Complementary Medicine Source Type: research
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Source: Journal of Food and Drug Analysis - Category: Food Science Source Type: research
Publication date: July 2018Source: Biocatalysis and Agricultural Biotechnology, Volume 15Author(s): Kavitha Vijayaraghavan, Johanna Rajkumar, Mohamed Ali SeyedAbstractThe chronic bed ridden patients acquire infections are the main source of alarming morbidity and mortality as their correlation with fomites. Fomites are reservoirs of drug-resistant pathogens found in the unhygienic clinical environment, which can infect patients and leading to high nosocomial infection rates and use of antimicrobial drugs. The use of and search for drugs and dietary supplements derived from plants have accelerated various therapeutic applic...
Source: Biocatalysis and Agricultural Biotechnology - Category: Biotechnology Source Type: research
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Source: Inorganica Chimica Acta - Category: Chemistry Source Type: research
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Source: Particuology - Category: Science Source Type: research
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