Green Synthesis of Silver Nanoparticles from the Leaf Extract of Volkameriainermis

Abstract

Nanoparticles are gaining interest in biomedical applications due to its importance such as anti-bacterial, anti-fungal and anti-cancer agents. Conventional methods for the synthesis of metal nanoparticles involves toxic reagents which produce harmful by-products and are hazardous to the environment. To overcome these limitations, green synthesis of nanoparticles was established. Eco-friendly methods using plant extracts are gaining popularity due to the abundance of raw materials and the production of non-toxic by-products threatening to the environment. Moreover, the nanoparticles synthesized from the plant extract are cost-effective. In addition, nanoparticles produced by green synthesis methods produces synergetic effect where both the nanoparticles as well as the natural bioactive constituents of the plant influence the biocidal properties. Different methods namely heating in water bath, microwave oven and exposure to bright sunlight were adopted for the synthesis of silver nanoparticles. Plant extract based synthesis of silver nanoparticles was eco-friendly and shows an alternative promise in bio-medical applications and it undertakes the negative effects of synthetic drugs.

A Review on Green-Synthesis of Cerium Oxide Nanoparticles: Focus on Central Nervous System Disorders

“…Reaction temperature, pH, duration, the concentration of salt precursor or plant extracts, and plant component utilized may have contributed to the observed differences in size [35]. It was found that plant-derived CeO2NPs were exceptionally stable throughout a wide variety of experimental settings [36]. Nanoparticles derived from green ceria, for example, have no physiochemical alterations in liquid solution.…”

Evaluation of detoxification of aflatoxin-b1 by using Ag nanoparticles of oil extracts user prepared by using some medical herbs

“…Silver nanoparticles from leaves of thyme, mint, rosemary and eucalyptus were prepared using silver nitrate, according to Ojha et al [12] and Krishnadhas et al [13] with some modifications. An amount of 1 g of hexane extracts were taken from leaves of mint, thyme, rosemary and eucalyptus and dissolved with 10 ml of ethanol, then added to 200 ml of silver nitrate (AgNo 3 ) under ultrasonic conditions with a power of 100 W and a frequency of 42 kHz for 30 minutes then placed on a magnetic vibrator without heat for 48 hours, noticing changes in color of the solution.…”

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“…The clear filtrate (extracellular extract) was used for nanoparticles synthesis 7,8,9,10 . Silver nitrate solution was interacted with the plant extract (1:1) mixing ratio for different time periods at 30°C in a rotary shaker at 120 rpm.…”