Mervet Gameel Hassan

Benha University · Botany and Microbiology

Efficiently mitigating and managing environmental pollution caused by the improper disposal of dyes and effluents from the textile industry is of great importance. This study evaluated the effectiveness of Streptomyces albidoflavus 3MGH in decolorizing and degrading three different azo dyes, namely Reactive Orange 122 (RO 122), Direct Blue 15 (DB 1...

Recent advances in nanotechnology have offered novel ways to combat cancer. By utilizing the reducing capabilities of Lactobacillus acidophilus, silver nanoparticles (AgNPs) are synthesized. The anti-cancer properties of AgNPs have been demonstrated in previous studies against several cancer cell lines; it has been hypothesized that these compounds...

Background As antibiotics and chemotherapeutics are no longer as efficient as they once were, multidrug resistant (MDR) pathogens and cancer are presently considered as two of the most dangerous threats to human life. In this study, Selenium nanoparticles (SeNPs) biosynthesized by Streptomyces parvulus MAR4, nano‑chitosan (NCh), and their nanoconju...

Cancer is a huge global disease burden. Every year, tens of millions of people worldwide are diagnosed with cancer, and more than half of them die as a result of it. The great biodiversity of the marine environment has increasingly piqued the interest of experts, especially in the field of drug discovery. The marine fungus Aspergillus fumigatus WA7...

Corn and wheat flours are a significant part of the daily diet for millions of people. This work aimed to detect all the fungal flora associations and determine the mycotoxin production in the local corn and wheat flours. All corn and wheat flours were packed in 50kg bags as commercial presentations of each type. Samples were collected from three l...

The present article targeted to biosynthesis and description of copper oxide nanoparticles (CuO NPs) using probiotic isolate and assessment the antibacterial, cytotoxicity of these NPs and its effect on wound heals. The CuO NPs are biosynthesized using probiotic isolate identified as Bacillus cereus. These CuO NPs are characterized using UV, FT-IR,...

Cancer cells can become resistant to existing treatments over time, so it is important to develop new treatments that target different pathways to stay ahead of this resistance. Many cancer treatments have severe side effects that can be debilitating and even life-threatening. Developing drugs that can effectively treat cancer while minimizing the...

Environmental contamination by phenol has been reported in both aquatic and atmospheric environments. This study aimed to separate and purify the peroxidase enzyme from bacteria that degrade phenol from wastewater sources. An enrichment culture of MSM was used to screen 25 bacterial isolates from different water samples for peroxidase production, s...

Citation: Elawady, M.E.; Hamed, A.A.; Alsallami, W.M.; Gabr, E.Z.; Abdel-Monem, M.O.; Hassan, M.G. Abstract: Endophytic fungi are a highly unpredictable group of microorganisms that can create a diverse range of secondary metabolites with biological activity. These metabolites enhance the host's ability to tolerate stress caused by various factors,...

Aniseeds (Pimpinella anisum) have gained increasing attention for their nutritional and health benefits. Aniseed extracts are known to contain a range of compounds, including flavonoids, terpenes, and essential oils. These compounds have antimicrobial properties, meaning they can help inhibit the growth of nasty bacteria and other microbes. The pur...

The emergence of resistance by biofilm-forming bacteria has reached alarming and dangerous levels that threaten human civilization. The current study sought to investigate the antibio-film potential of green-synthesized silver nanoparticles, mediated by a new Streptomyces strain. Zeta potential, transmission electron microscopy (TEM), and UV-Vis sp...

Marine environments are considered an interesting source of new active ingredients. The discovery and subsequent clinical introduction of antibiotics is one of the most important game-changers in the history of medicine. So, A pure compound of Dibutyl phthalate ester was extracted from a marine-derived fungus of Aspergillus sp. 3MAG isolated from s...

The fungal pathogens considered the major human opportunistic, 50–60% of candidiasis cases patients Candida albicans. Green synthesis of AgNPs from NaNO3 using Curcuma extract was performed. UV–Vis spectrophotometry and TEM characterization were measured. AgNPs absorption peak showed between 420-440 nm and results of TEM observed, the AgNPs has a u...

Escherichia coli is a part of human intestinal flora and considered the second most common death factor between children younger than five years. Escherichia coli Shiga-like, Heat-labile toxins and multidrug-resistant are important virulence factors. Therefore, the main targets of this work were molecular diagnosis and characterization of toxine ge...

Antibiotics have been used for the control of plant pathogenic bacteria and it has become a problem in pathosystems. The current study aimed to detection plasmid curing in species of the genus Xathomonas antibiotic resistance isolated from citrus, almonds and beans. Methods: Common bacteria blight disease in citrus , almond and beans were detected...

In this study, thirty Streptomyces strains were isolated from macroalgae around the Euphrates river by spread plate method as well as to optimize cultural growth conditions for maximum antibacterial productivity. The colonies were purified by repeated streak on an international Streptomyces project-2 (ISP-2) medium subculture plate for active strai...

This study aimed to study the applications of bacteriophages as a biocontrol agent against certain antibiotic-resistant bacteria causing a chronic wound. Here, the chronic wound caused by Pseudomonas aeruginosa were isolated and characterized biochemically using the automated VITEK® 2 system. The antibiotic sensitivity pattern of the isolated chron...

The Taguchi design has been used to optimize citrine factors affecting on specific processes. Lactobacillus paracasei ATCC 25,302 was used for cholesterol assimilation and applied the experimental factorial design to optimize cholesterol assimilation conditions. The model predicted that the optimal conditions for cholesterol assimilation were 120 l...

Antibiotic resistance is a global threat to public health, causing continual anxiety of almost intractable bacterial diseases. It is critical to investigate new antibiotic-free strategies to combat bacterial infections like “Klebsiella pneumonia”. As a result, the phytochemicals produced by the plant as natural products with antimicrobial capabilit...

Antibiotic resistance is a global threat to public health, causing continual anxiety of almost intractable bacterial diseases. It is critical to investigate new antibiotic-free strategies to combat bacterial infections like “Klebsiella pneumonia”. As a result, the phytochemicals produced by the plant as natural products with antimicrobial capabilit...

Background Rhizopus species is among the most well-known lipase producers, and its enzyme is suitable for use in many industrial applications. Our research focuses on the production of lipase utilizing waste besides evaluating its applications. Results An extracellular lipase was partially purified from the culture broth of Rhizopus oryzae R1 isol...

Proteus mirabilis is one of the most frequent causes of catheter-associated urinary tract infections (CAUTIs) owing to its capability to colonize and develop crystalline multidrug-resistant (MDR) biofilms. Here, we report the isolation and partial characterization of three novel bacteriophages, vB_PmiM-ES1a, vB_PmiM-ES1b, and vB_PmiM-ES1c, which we...

Recently, the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) resulted in Coronavirus Disease 2019 (COVID-19) outbreak. A new SARS-CoV-2 strain is expected to emerge in late 2020, including B.1.1.7. The high transmission rate of SARS-CoV-2 B.1.1.7 has raised public health concerns in several countries. Hence, in this study, we assessed...

The present work established that the exopolysaccharide taken from Lactobacillus brevis and its Nano crystalline form are very efficient as an anti-colon cancer. The produced exopolysaccharide and its Nano crystalline were preliminarily conformed by UV spectroscopy, FTIR spectroscopy and TEM. The UV analysis revealed the peak at 258 nm which corres...

The present work established that the exopolysaccharide taken from Lactobacillus brevis and its Nano crystalline form are very efficient as an anti-colon cancer. The produced exopolysaccharide and its Nano crystalline were preliminarily conformed by UV spectroscopy, FTIR spectroscopy and TEM. The UV analysis revealed the peak at 258 nm which corres...

The aim of this study is to isolate and characterize bacteriophages, as an alternative solution against multidrug-resistant Acinetobacter baumannii-S-MH bacteria causing an outbreak in hospital environments and intensive care units (ICUs). Here, biochemically; isolating and characterizing Acinetobacter baumannii-S-MH by the automated Vitek 2 system...

test the ability and optimize the decolorization of textile azo Reactive Orange 122 by Streptomyces sp (A5) isolated from dye contaminated soil.

A strain of Pseudovibrio sp. strain 4MS 2020 with high exopolysaccharide production was isolated from sawa lake in Iraq and identified based on morphological, physiological, biochemical characteristics and phylogenetic examination of 16S rDNA sequences. Pseudovibrio sp. strain 4MS 2020 was optimized for production of maximum yeild of EPS which gave...

Treponema pallidum is a motile Gram-negative bacterium causing syphilis. Syphilis is one of the known sexually transmitted infections (STIs) and transfusion transmitted infections (TTIs). Blood samples from 16,000 Egyptian blood donors attending all blood banks in Suhag governorate during the period between January 2015 to December 2015 were screen...

Treponema pallidum is a motile Gram-negative bacterium causing syphilis. Syphilis is one of the known sexually transmitted infections (STIs) and transfusion transmitted infections (TTIs). Blood samples from 16,000 Egyptian blood donors attending all blood banks in Suhag governorate during the period between January 2015 to December 2015 were screen...

Antibiotics have been used for the control of plant pathogenic bacteria and it has become a problem in pathosystems. The current study aimed to detection plasmid curing in species of the genus Xathomonas antibiotic resistance isolated from citrus, almonds and beans. Methods: Common bacteria blight disease in citrus , almond and beans were detected...

The unceasing emerging of multidrug-resistant bacteria imposes a global foremost human health threat and discovery of new alternative remedies are necessity. The use of plant essential oil in the treatment of many pathogenic bacteria is promising. Acne vulgaris is the most common skin complaint that fears many people about their aesthetic appearanc...

Escherichia coli is considered one of the most frequent causative agents of common bacterial infections worldwide. In addition, effective treatment and prevention measures are still in demand due to the rise of antibiotic resistance and the emergence of new virulent strains. In this work, we evaluated antibiotics and bacteriophages as interventions...

THE CURRENT research deals with optimization of the factors affecting lipase production under submerged culture system. The most efficient isolate R1 was identified depending on cultural and morphological characteristics together with 18S rRNA sequence as Rhizopus oryzae. Using one variable at a time, the maximum lipase activity (171.8 U/mL) was re...

Seven populations of two species of Ocimum were analyzed using data from morphological and biochemical (seed proteins and isozymes) characters to measure genetic variation within and between populations and species of Ocimum in Egypt. Ten isozyme systems revealed 23 loci and a total of 49 alleles in the studied Ocimum populations. The constructed t...

Electrophoretic protein profiles and morphological traits were used to study the genetic diversity among accessions of Mentha spp. (M 10ngifolia, M. spicata and M piperita) collected from thirty eight populations distributed in different habitats in Egypt. Ten individuals from each accession were examined for their morphological traits and the Tris...

Isozyme polymorphism has been used to measure genetic diversity, genetic population structure and for the estimation of the amount of genetic divergence within and between populations and species of Mentha in Egypt. Ten isozyme systems revealed 31 isozyme loci and a total of 79 alleles in 32 populations of M . longifolia , five populations of M . s...