Fungal-derived nanoparticles

About: Fungal-derived nanoparticles is a research topic. Over the lifetime, 14 publications have been published within this topic receiving 4984 citations.

Synthesis of silver nanoparticles using microorganisms

Abstract: Biosynthesis of silver nanoparticles using Penicillium fungi has been reported. The extracellular mechanism of silver nanoparticles creation was investigated by UV-Vis spectroscopy, electron microscopy and laser diffraction. The zeta potential of silver nanoparticles has also been determined.

Fungi-assisted silver nanoparticle synthesis and their applications.

Abstract: Nanotechnology is a rapidly developing field because of its wide range of applications in science, nanoscience and biotechnology. Nanobiotechnology deals with nanomaterials synthesised or modified using biotechnology. Fungi are used to synthesise metal nanoparticles and they have vast applications in wound healing, pathogen detection and control, food preservation, textiles, fabrics, etc. The present review describes the different types of fungi used for the biosyntheses of silver nanoparticles (AgNPs), along with their characterisation and possible biological applications. AgNPs synthesised by other physical and chemical methods are expensive and have toxic substances adsorbed onto them. Therefore, green, simple and effective approaches have been chosen for the biosynthesis of AgNPs, which are very important because of their lower toxicity and environmentally friendly behaviour. AgNPs synthesised using fungi have high monodispersity, specific composition and a narrow size range. In this regard, among the different biological methods used for metal nanoparticle synthesis, fungi are considered to be a superior biogenic method owing to their diversity and better size control. To further understand the biosynthesis of AgNPs using various fungi and evaluate their potential applications, this review discusses the antimicrobial, antibacterial, antifungal, antiviral, antidermatophytic, anti-inflammatory, antitumor, hepatoprotective, cytotoxic, hypotensive, and immunomodulatory activities of these AgNPs. The synthesis of AgNPs using fungi is a clean, green, inexpensive, eco-friendly, reliable, and safe method that can be used for a range of applications in real life for the benefit of human beings.

Biosurfactants as green stabilizers for the biological synthesis of nanoparticles.

Abstract: Taking into consideration the needs of greener bioprocesses and novel enhancers for synthesis using microbial processes, biosurfactants, and/or biosurfactant producing microbes are emerging as an alternate source for the rapid synthesis of nanoparticles A microemulsion technique using an oil-water-surfactant mixture was shown to be a promising approach for nanoparticle synthesis Biosurfactants are natural surfactants derived from microbial origin composed mostly of sugar and fatty acid moieties, they have higher biodegradability, lower toxicity, and excellent biological activities The biosurfactant mediated process and microbial synthesis of nanoparticles are now emerging as clean, nontoxic, and environmentally acceptable “green chemistry’’ procedures The biosurfactant-mediated synthesis is superior to the methods of bacterial- or fungal-mediated nanoparticle synthesis, since biosurfactants reduce the formation of aggregates due to the electrostatic forces of attraction and facilitate a uniform morpho

Nanosilver products and toxicity

Abstract: Nanotechnology focuses on materials in which at least one dimension is lower than 100 nm. Those materials have unique properties because their structures have high surface to mass ratios. For instance, silver nanoparticles are increasingly added to everyday products because silver nanoparticles have a high biocidal effect against bacteria, viruses and fungi. Here, we review products enriched in silver nanoparticles and the fate of nanoparticles in the environment. Silver nanoparticles can be absorbed by plant and animal tissues and thus penetrate into the food chain. Despite a paucity of studies of their toxicity to the human body, literature reports show the negative effects of nanoparticles on animals. Products such as hygiene preparations, dental implants, toothpastes and textiles may release silver nanoparticles in the environment. Rainwater washes silver nanoparticles out of building materials such as paint, siding and roofing. Silver nanoparticles may then accumulate in the soil. Silver nanoparticles that are added to air conditioners and air filters may penetrate the atmosphere then be inhaled by living organisms.