Introduction: This study explores the potential of the endophytic fungus Aureobasidium pullulans AKW for melanin production and its anticancer activity.
Method: We report a significant achievement: AKW synthesized 4.89 g/l of melanin in a simple fermentation medium devoid of tyrosine, a precursor typically required for melanin biosynthesis.
This study presents a novel and efficient approach for pullulan production using artificial neural networks (ANNs) to optimize semi-solid-state fermentation (S-SSF) on faba bean biomass (FBB). This method achieved a record-breaking pullulan yield of 36.81 mg/g within 10.
View Article and Find Full Text PDFDue to increasing concerns about environmental impact and toxicity, developing green and sustainable methods for nanoparticle synthesis is attracting significant interest. This work reports the successful green synthesis of silver (Ag), silver-titanium dioxide (Ag@TiO), and silver-selenium dioxide (Ag@SeO) nanoparticles (NPs) using L. extract.
View Article and Find Full Text PDFThis study bio-synthesized Ag@SeO bmNPs successfully, using turmeric ethanol extract, and characterized them using various techniques. The FT-IR analysis reveals the involvement of these plant-derived compounds, especially phenolics, in the reduction process by acting as electron donors and stabilizing/capping agents. Zeta potential analysis showed a slight negative surface charge for the stability of Ag@SeO NPs, where TEM revealed spherical nanoparticles with an average size of 20 nm.
View Article and Find Full Text PDFMelanin as a natural polymer is found in all living organisms, and plays an important role in protecting the body from harmful UV rays from the sun. The efficiency of fungal biomass () and its extracellular melanin as Cr(VI) biosorbents was comparatively considered. The efficiency of Cr(VI) biosorption by the two sorbents used was augmented up to 240 min.
View Article and Find Full Text PDFThe effect of three independent variables (i.e., tyrosine, sucrose, and incubation time) on melanin production by Aureobasidium pullulans AKW was unraveled by two distinctive approaches: response surface methodology (i.
View Article and Find Full Text PDFHeavy metals, including chromium, are associated with developed industrialization and technological processes, causing imbalanced ecosystems and severe health concerns. The current study is of supreme priority because there is no previous work that dealt with the modeling of the optimization of the biosorption process by the immobilized cells. The significant parameters (immobilized bacterial cells, contact time, and initial Cr concentrations), affecting Cr biosorption by immobilized Pseudomonas alcaliphila, was verified, using the Plackett-Burman matrix.
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October 2020
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
View Article and Find Full Text PDFChromium is one of the heavy metal pollutants that causing risky health issues when discharged into the aquatic ecosystems. The current investigation focused on the bioremoval of Cr depending on the bacterial sorption process by using Pseudomonas sp. NEWG-2 which was identified on the basis of morphological, cultural characteristics, 16S rRNA sequencing and phylogenetic analysis as Pseudomonas alcaliphila strain NEWG-2.
View Article and Find Full Text PDFHeavy metals are environmental pollutants affect the integrity and distribution of living organisms in the ecosystem and also humans across the food chain. The study targeted the removal of copper (Cu) from aqueous solutions, depending on the biosorption process. The bacterial candidate was identified using 16S rRNA sequencing and phylogenetic analysis, in addition to morphological and cultural properties as Azotobacter nigricans NEWG-1.
View Article and Find Full Text PDFBackground: Amino acids are important for living organisms, they acting as crucial for metabolic activities and energy generation, wherein the deficiency in these amino acids cause various physiological defects.
Objective: The aim of this study is to investigate the effect of some nutritional factors on the amino acids production by Mucor mucedo KP736529 during fermentation intervals.
Methodology: Mucor mucedo KP736529 was selected according to proteolytic activity.
Saccharification of five cellulosic wastes, i.e. rice husks, wheat bran, corn cobs, wheat straw and rice straw by three cellulytic fungi, i.
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