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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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AbstractTwo angular phenothiazines and one angular phenoxazine were successfully synthesized via anhydrous base condensation reaction of 2,6-diamino-4-chloropyrimidine-5-thiol, with 7-chloro-5,8-quinolinequinone,2-aminothiophenol and 2-aminophenol, respectively. Condensation reaction between 2-6-diamino-4-chloropyrimidine-5-thiol and 7-chloro-5,8-quinolinequinone in the presence of anhydrous sodium carbonate yielded 10-amino-8-chloro-1,9,11-triaza-5H-benze[a]phenothiazine-5-one, 1-aza-5H-benzo[a]phenothiazine-5-one and 1-aza-5H-benzo[a]phenoxazine-5-one were produced with anhydrous basic condensation between 7-chloro-5,8-q...
Source: Medicinal Chemistry Research - Category: Chemistry Source Type: research
Publication date: April 2018 Source:Phytochemistry Letters, Volume 24 Author(s): Li Zhang, GuoHu Zhao, CaiLing Yang, Lin Bai, HaiXia Liu A new daphniphyllum alkaloid daphnicyclidin M (1), containing one rare cyclopentadienyl anion, was isolated from the stems and leaves of Daphniphyllum paxianum Rosanth along with five known alkaloids, longistylumphylline A (2), caldaphnidine A (3), caldaphnidine E (4), daphnilongeranin A (5), and 2-hydroxyyunnandaphnine D (6). The structures were elucidated on the basis of spectroscopic data, and the absolute configuration of 1 was assigned by single-crystal X-ray diffraction crystallogr...
Source: Phytochemistry Letters - Category: Chemistry Source Type: research
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Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
Silver phosphate nanoparticles were biologically synthesised, for the first time, using a dilute silver nitrate solution as the silver ion supplier, and without any source of phosphate ion. The applied bacterium was Sporosarcina pasteurii formerly known as Bacillus pasteurii which is capable of solubilising phosphate from soils. It was speculated that the microbe accumulated phosphate from the organic source during the growth period, and then released it to deionised water. According to the transmission electron microscopy images and X-ray diffraction results, the produced nanoparticles were around 20 nm in size and identi...
Source: IET Nanobiotechnology - Category: Nanotechnology Source Type: research
Abstract The aim of this study was to evaluate the microbiological quality and safety of fresh produce at retail level in Korea in order to periodically update information and establish available risks associated with consumption of fresh fruits and vegetables. The samples from different markets located in 3 provinces of South Korea were collected. The protocol in the Korean Food Standards Codex was applied and generic Escherichia coli, coliforms, aerobic mesophilic bacteria (AMB), and yeast and mold (YM) in 360 packaged and unpackaged fresh fruits and vegetables were analyzed. Presence of pathogens was examined using real...
Source: Journal of Food Science - Category: Food Science Authors: Tags: Food Microbiology & Safety Source Type: research
We synthesized a tridentate Schiff base ligand, 6‐(((2‐hydroxyphenyl)amino)methylene)‐2‐methoxycyclohexa‐2,4‐dienone [H2L], as well as its Mo(VI) complex [MoO2(L)(DMSO)], and then characterized them completely using elemental analysis, FT‐IR, UV–Vis and 1HNMR spectroscopy techniques. X‐ray single crystal diffraction method was used for the determination of the structure of the synthesized ligand and complex. All other spectroscopic techniques performed, confirmed that [MoO2(L)(DMSO)]had an octahedral geometry around the Mo(VI) central ion coordinated by the donor atoms of the deprotonated ligand, two ...
Source: Applied Organometallic Chemistry - Category: Chemistry Authors: Tags: FULL PAPER Source Type: research
Publication date: February 2018 Source:Microbial Pathogenesis, Volume 115 Author(s): MubarakAli Davoodbasha, Baldev Edachery, Thajuddin Nooruddin, Sang-Yul Lee, Jung-Wan Kim Fatty acid methyl esters (FAME) derived from lipids of microalgae is known to have wide bio-functional materials including antimicrobials. FAME is an ideal super-curator and superior anti-pathogenic. The present study evaluated the efficiency of FAME extracted from microalgae Scenedesmus intermedius as an antimicrobial agent against Gram positive (Staphylococcus aureus, Streptococcus mutans, and Bacillus cereus) Gram negative (Escherichia coli and Pse...
Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
Publication date: Available online 3 January 2018 Source:Microbial Pathogenesis Author(s): Shuai Wei, Ramachandran Chelliah, Byung-Jae Park, Joong-Hyun Park, Fereidoun Forghani, Youn-Seo Park, Min-Seok Cho, Dong-Suk Park, Deog-Hwan Oh The aim of the study was to identify and evaluate specific biomarkers to differentiate within Bacillus cereus group species from contaminated food samples with the use of real-time PCR. A total of 120 strains, comprising of 28 reference, 2 type, 78 wild strains of B. cereus and B. thuringiensis along with 12 strains representing 2 bacterial groups – B. mycoides, B. pseudomycoides, B. w...
Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
The initial introduction of new medicinal agents into the health care system sometimes, requires information beyond that is recorded in libraries relying instead, on reports available through traditions and healers within a society. This paper explored the antibacterial activity of aqueous and hydromethanolic extracts of nine folkloric medicinal plant from Bechar region (southwest Algeria) namely:A. nardus, A. schoenanthus, G. vulgaris,two species of H. scoparia green&red, P. laevigata, R. tripartita, T. gallica andT. nudatum, frequently used in the local traditional medicine. The antibacterial activity of different ex...
Source: International Journal of Phytomedicine - Category: Science Authors: Source Type: research
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Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
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