[BMIM] PF6 ionic liquid mediated green synthesis of ceramic SrO/CeO2 nanostructure using Pedalium murex leaf extract and their antioxidant and antibacterial activities

2019 ◽  
Vol 45 (9) ◽  
pp. 12138-12148 ◽  
Author(s):  
Nithya Pandiyan ◽  
Balaji Murugesan ◽  
Jegatheeswaran Sonamuthu ◽  
Selvam Samayanan ◽  
Sundrarajan Mahalingam
Keyword(s):  
Ionic Liquid ◽  
Green Synthesis ◽  
Leaf Extract ◽  
Antibacterial Activities ◽  
Pedalium Murex

scholarly journals Green synthesis of copper nanoparticles using leaf extract of Ageratum houstonianum Mill. and study of their photocatalytic and antibacterial activities

Nano Express ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 010033
Author(s):  
Sandip Kumar Chandraker ◽  
Mishri Lal ◽  
Mithun Kumar Ghosh ◽  
Vivek Tiwari ◽  
Tanmay Kumar Ghorai ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Copper Nanoparticles ◽  
Leaf Extract ◽  
Antibacterial Activities

scholarly journals Green Synthesis of Silver Nanoparticles Using Muntingia calabura Leaf Extract and Evaluation of Antibacterial Activities

2020 ◽  
Vol 10 (5) ◽  
pp. 6253-6261 ◽  
Keyword(s):  
Escherichia Coli ◽  
Green Synthesis ◽  
Bacillus Cereus ◽  
Leaf Extract ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Spherical Form ◽  
Stabilizing Agents ◽  
Microbial Inhibition ◽  
Muntingia Calabura

The present work aims to investigate a green synthesis of AgNPs using Muntingia calabura leaf extract as reducing and stabilizing agents. The AgNPs formation was monitored using UV-Vis spectrophotometer. Characterisations of AgNPs size and shape were observed by TEM. The elemental analysis was analyzed using XDS. The maximum surface Plasmon resonance for AgNPs was detected at 425-430 nm. This study revealed that the AgNPs were polydispersed and polycrystalline nature. The microbial inhibition test against Escherichia coli and Bacillus cereus showed that the muntingia leaf-mediated AgNPs had inhibited the growth of these bacteria, as indicated by the formation of inhibition zone. The average inhibition zone for Escherichia coli was 10.3±0.5 mm and for Bacillus cereus at 9.5±0.6 mm. TEM results showed that the synthesised AgNPs have spherical form with the sizes ranging from 22 to 37 nm. Hence, the synthesised AgNPs can potentially be applied for water treatment and medicinal purposes.

Antibacterial Activities of Sirih Merah (Piper crocatum) Leaf Extracts

2019 ◽  
Vol 5 (3) ◽  
pp. 1-10
Author(s):  
Puspa Julistia Puspita ◽  
Mega Safithri ◽  
Nirmala Peni Sugiharti
Keyword(s):  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Agent ◽  
Leaf Extract ◽  
Antibacterial Activities ◽  
Leaf Extracts ◽  
Herbal Plants

Piper crocatum is one of medicinal herbal plants with a large number of benefits. Usually herbal plants have activity as antibacterial agent. Therefore, the objectives of this research were to obtain information on antibacterial activities of the leaf extracts of Piper crocatum againts four types of bacteria, in that Staphylococcus, Bacillus substilis, Escherichia coli, and Pseudomonas aeruginosa and then to analyze the phytochemistry of the leaf extracts of Piper crocatum. The leaves of Piper crocatum were extracted by maceration and reflux using ethanol 30%. The assays of the antibacterial activities and phytochemistry on the extracts were carried out using the method of Maria Bintang. Results showed that the yield of the extraction using ethanol by maceration method was 20.8%. Meanwhile, using the reflux method, the yield was obtained about 26.25%. The phytochemistry analysis showed that the leaf extracts of Piper crocatum contained alkaloid, steroid and tanin. According to this study, it was found that the leaf extract of Piper crocatum can be used to inhibit the growth of B. subtilis and P. aeuruginosa, but can not inhibit the growth of E.coli and S. aureus.

scholarly journals Green Biosynthesis of Silver Nanoparticles Using Leaf Extract of Carissa carandas L. and Their Antioxidant and Antimicrobial Activity against Human Pathogenic Bacteria

Biomolecules ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 299
Author(s):  
Reetika Singh ◽  
Christophe Hano ◽  
Gopal Nath ◽  
Bechan Sharma
Keyword(s):  
Silver Nanoparticles ◽  
Pathogenic Bacteria ◽  
Leaf Extract ◽  
Room Temperature ◽  
Xrd Analysis ◽  
Antibacterial Activities ◽  
Effect Of Temperature ◽  
Human Pathogenic Bacteria ◽  
Carissa Carandas ◽  
Antioxidant And Antimicrobial Activity

Carissa carandas L. is traditionally used as antibacterial medicine and accumulates many antioxidant phytochemicals. Here, we expand this traditional usage with the green biosynthesis of silver nanoparticles (AgNPs) achieved using a Carissa carandas L. leaf extract as a reducing and capping agent. The green synthesis of AgNPs reaction was carried out using 1mM silver nitrate and leaf extract. The effect of temperature on the synthesis of AgNPs was examined using room temperature (25 °C) and 60 °C. The silver nanoparticles were formed in one hour by stirring at room temperature. In this case, a yellowish brown colour was developed. The successful formation of silver nanoparticles was confirmed by UV–Vis, Fourier transform infrared (FT-IR) and X-ray diffraction (XRD) analysis. The characteristic peaks of the UV-vis spectrum and XRD confirmed the synthesis of AgNPs. The biosynthesised AgNPs showed potential antioxidant activity through DPPH assay. These AgNPs also exhibited potential antibacterial activity against human pathogenic bacteria. The results were compared with the antioxidant and antibacterial activities of the plant extract, and clearly suggest that the green biosynthesized AgNPs can constitute an effective antioxidant and antibacterial agent.

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