Biomolecules present in plant extracts can be used to reduce metal ions to nanoparticles in a single-step green synthesis process. This biogenic reduction of metal ion to base metal is quite rapid, readily conducted at room temperature and pressure, and easily scaled up. Synthesis mediated by plant extracts is environmentally benign. The reducing agents involved include the various water solubl...

One of the most significant challenges facing the biomimetic synthesis of materials is achieving the requisite level of dimensional and spatial control. Typical reaction conditions for biomimetic silica synthesis allow for continued growth and ripening leading to the formation of larger nanospheres on the order of 200-600 nm in diameter. Herein, we have used polyamidoamine and polypropylenimine...

separation of some biogenic amines via rp-hplc using mixed micellar mobile phase was investigated. the compounds were derivatized before hand by dansyl chloride as a chromophoric reagent. appropriate conditions for separation, were determined by studying factors such as temperature, type and percentage of organic modifier, concentration of surfactants (sds and brij-35) and the ph of the mobile ...

The presence of enteric viruses in drinking water is a potential health risk. Growing interest has arisen in nanometals for water disinfection, in particular the use of silver-based nanotechnology. In this study, Lactobacillus fermentum served as a reducing agent and bacterial carrier matrix for zerovalent silver nanoparticles, referred to as biogenic Ag(0). The antiviral action of biogenic Ag(...

The determination of biogenic amines in alcoholic beverages is important to assess the potential risks associated with the consumption of high concentrations of these compounds. In addition, product storage conditions and the length of storage can cause the formation of biogenic amines that reduce product quality. We report a new method using cation-exchange chromatography with either suppresse...

The use of algae-based green synthesis metal oxide nanoparticles (MONPs) for bioremediation is an environmentally friendly and cost-effective alternative to conventional approaches. Algal-mediated offers several benefits over other biogenic processes, such as plants, bacteria, fungi, including ease synthesis, scalability, rapid synthesis. Algae are readily available in nature, nontoxic, can pro...

The frontiers of nanomedicine are consistently being challenged by the gradually expanding knowledge properties nanoparticles. Toward this end, biogenic synthesis silver nanoparticles utilizing natural compounds in plants as reducing and capping agents grabbed considerable attention, lieu synthetic hazardous physical chemical techniques. Green (AgNPs) has proven safe effective treating type 2 d...

BACKGROUND Although most reported biogenic Mn oxides are hexagonal birnessites, other types of biogenic Mn oxides also commonly occur in the environment. However, sorption characteristics and underlying mechanisms of the adsorption of heavy-metal ions on these biogenic Mn oxides are still rarely addressed. In this study, the sorption mechanisms of Cu(II) on a low valence biogenic Mn oxide, poor...

Biogenic amines are important neuromodulators whose discovery laid the foundation of modern neuropharmacology. These compounds (which include norepinephrine, dopamine, serotonin, and histamine) are stored in secretory vesicles located in the cytoplasm, are released into the extracellular space by regulated exocytosis, then activate specific G protein-coupled receptors (GPCRs) located in preand ...