Green Synthesis Nanopartikel Perak (Agnps) Terkonjugasi Etil Parametoksi Sinamat (Epms) sebagai Bahan Tabir Surya: Green Synthesis Of Nanopartikel Perak (Agnps) Terkonjugasi Etil Parametoksi Sinamat (Epms) sebagai Bahan Tabir Surya

Green Synthesis is a method to make silver nanoparticles (AgNPs) by utilizing natural materials as bioreductors. One of the natural materials that can reduce metal ions is Kaempferia galanga rhizome because it has a chemical component that can penetrate the metal. The compounds are ethyl paramethoxycinnamate (EPMC) which is used as sunscreen. This study aims to produce AgNPs conjugated with EPMC that can be used as raw material sunscreen. This study was conducted by extracting EPMS from the Kaempferia galanga rhizome and synthesizing the AgNPs conjugated with EPMC. The synthesis results were characterized by UV-Vis Spectrophotometry, FTIR, SEM, PSA and sunscreen activity. Extracted result was obtained crystalline is ethyl paramethoxycinnamate compound with yield 2,3%. The characterization of EPMC with UV-Vis spectrophotometer was obtained maximum wavelength of 308 nm and FTIR analysis result at wave number 1701,27 cm-1 indicated the presence of carbonyl group (C = O) and 1165,97 cm-1 presence of C-O and showed specific characteristic from EPMS. Characterization of AgNPs using Uv-Vis spectrophotometer was obtained maximum wavelength of 469 nm. Characterization of AgNPs using SEM are spherical and monodispers forms.  Then, particle size using PSA obtained an average diameter of 182 nm. AgNPs conjugated with EPMS has a sunscreen activity with sunblock category and successfully provide protection against UV exposure at low concentration (200 ppm) categorized as ultra protection with SPF value 36,4

Synthesis and characterization of silver nanoarticles from extract of Eucalyptus citriodora

The primary motivation for the study to develop simple eco-friendly green synthesis of silver nanoparticles using leaf extract of Eucalyptus citriodora as reducing and capping agent. The green synthesis process was quite fast and silver nanoparticles were formed within 0.5 h. The synthesis of the particles was observed by UV-visible spectroscopy by noting increase in absorbance. Characterization of the particles was carried out by X-ray diffraction, FTIR and electron microscopy. The developed nanoparticles demonstrated that E. citriodora is good source of reducing agents. UV-visible absorption spectra of the reaction medium containing silver nanoparticles showed maximum absorbance at 460 nm. FTIR analysis confirmed reduction of Ag+ to Ag0 atom in silver nanoparticles. The XRD pattern revealed the crystalline structure of silver nanoparticles. The SEM analysis showed the size and shape of the nanoparticles. The method being green, fast, easy and cost effective can be recommended for large scale production of AgNPs for their use in food, medicine and materials

COMPARATIVE PERFORMANCE ANALYSIS OF GREEN SYNTHESIS USING CROTON SPARSIFLORUS MORONG LEAF WITH CYNODON DACTYLON LEAF

There is an increasing commercial demand for nanoparticles (NPs) due to their wide applicability in various areas. The development of reliable and eco-friendly processes for synthesis of metallic nanoparticles is an important step in the field of nanotechnology. Plant extracts are eco-friendly and thus can be an economic and efficient alternative for the large-scale synthesis of nanoparticles. This process of plant extracts based synthesis is called as Green Synthesis. We evaluated the silver nanoparticles produced by green synthesis of two different plants leafs. This paper presents Comparative Performance Analysis of Green Synthesis using Croton Sparsiflorus Morong leaf with Cynodon Dactylon leaf. Green synthesis of Exopolysaccharides coated silver nanoparticles uses Croton sparsiflorus morong leaf and silver nanoparticles uses Cynodon Dactylon leaf. Comparative performance analysis uses EDX analysis, UV- Vis Spectral Analysis, FTIR analysis and Antimicrobial Activity. Compare to green synthesis of silver nanoparticles using Cynodon Dactylon leaf, Green synthesis of Exopolysaccharides coated silver nanoparticles uses Croton sparsiflorus morong leaf is high efficient in terms of different performance analysis.&nbsp

Green Synthesis of Nanomaterials and Their Biological Applications

The book "Green Synthesis of Nanomaterials and Their Biological Applications" present novel advances about the green synthesis of nanomaterials, as well as on the possible biological applications, including studies dealing with entomology, parasitology, biomedicine, and environmental research

Green Synthesis of Potential Antifungal Agents: 2-Benzyl Substituted Thiobenzoazoles

A series of benzyl-substituted thiobenzoazoles were synthesized by an environmentally friendly 18 approach, to search for new antifungal agrochemicals. Compounds were prepared starting from 2- 19 mercaptobenzoazoles, using KOH, benzyl halides and water, resulting in a simple and ecological 20 method. New antifungals were tested against a group of phytopathogenic fungi. Two compounds 21 showed an interesting activity against Botrytis cinerea, Fusarium oxysporum and Aspergillus spp.: 22 2-((4-(trifluoromethyl)benzyl)thio)benzo[d]thiazole, 3ac, and 2-((4- 23 methylbenzyl)thio)benzo[d]thiazole, 3al. Thus, 3ac and 3al can be considered as broad spectrum 24 antifungal agents. Furthermore, two new compounds, 2-((4-iodobenzyl)thio)benzo[d]thiazole, 3aj, 25 and 2-(benzylthio)benzo[d]oxazole, 3ba, showed better inhibitory effect against Botrytis cinerea 26 and Fusarium oxysporum when compared to the commercial fungicide Captan. Thus, 3aj and 3ba 27 can be considered reduced-spectrum antifungalsFil: Ballari, María Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Herrera Cano, Natividad Carolina. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: López, Abel Gerardo. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Ciencia y Tecnología de los Alimentos; ArgentinaFil: Wunderlin, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Ciencia y Tecnología de Alimentos Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Ciencia y Tecnología de Alimentos Córdoba; ArgentinaFil: Feresin, Gabriela Egly. Universidad Nacional de San Juan. Facultad de Ingeniería. Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Santiago, Ana Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentin

Development of new silver nanoparticles suitable for materials with antimicrobial properties.

Silver nanoparticles are the most important nanoparticles in connection with the antimicrobial effect. Nowadays, the green synthesis of various types of nanoparticles is rapid, effective and produce less toxic nanoparticles often with specific properties. In our experiment we have developed and described in details various types of silver nanoparticles synthesized chemically or by the green synthesis. Nine different silver nanoparticles were synthesized, three by citrate method at different pHs (8; 9; 10), four using gallic acid at alkaline pHs (10; 11), and two by green synthesis using green tea and coffee extracts, both at pH 9. Characterisation of silver nanoparticles was performed using dynamic light scattering, scanning electron microscopy, and ultraviolet-visible absorption spectroscopy. Silver nanoparticles prepared by green synthesis showed the highest antioxidant activity and also ability for quenching of free radicals. Antibacterial activity of silver nanoparticles was determined on bacterial cultures such as Staphylococcus aureus and Escherichia coli. Silver nanoparticles synthesized using green tea and coffee extracts showed the highest antibacterial activity for both bacterial strains. Minimal inhibition concentration for both strains was found to be 65 {aelig}M at each silver nanoparticle synthesized using green synthesis

Mini Review: Citrus sinensis Sebagai Bioreduktor Dalam Green Synthesis Nanopartikel

Green synthesis is an eco-friendly approach that provides a viable alternative to traditional physical and chemical methods for the production of nanoparticles. This technique employs non-toxic and safe materials, such as plants, microorganisms, algae, bacteria, yeast, and fungi, to generate stable and less toxic nanoparticles. Citrus sinensis, commonly known as sweet orange, is a plant that contains various active compounds. These bioactive compounds can be extracted and used as bioreductants in green synthesis of nanoparticles. This mini review aimed to provide an overview of the current state of research on the utilization of Citrus sinensis as a bioreductant in the production of nanoparticles. A systematic search strategy was employed to identify research articles that met the criteria of discussing green synthesis of nanoparticles with Citrus sinensis as a bioreductant. The nanoparticles produced using Citrus sinensis extract can be either metal nanoparticles or metal oxide nanoparticles. The review highlights the distribution of nanoparticles produced with Citrus sinensis extract, their applications, and the extraction process of Citrus sinensis commonly employed in green synthesis of nanoparticles. Hopefully this review serves as a useful reference for researchers and practitioners who are interested in employing the Citrus sinensis plant as a bioreductant in the green synthesis of nanoparticles

REVIEW: GREEN SYNTHESIS NANOPARTIKEL TiO2 SEBAGAI MATERIAL FOTOKATALIS

Nanopartikel TiO2 merupakan material yang baik digunakan sebagai fotokatalis, hal ini dibuktikan dengan berbagai penelitian yang telah berhasil. Adapun metode sintesis dan ramah lingkungan yaitu dengan metode green synthesis. Metode green synthesis telah menarik perhatian para ilmuan karena proses yang ramah lingkungan dengan pereduksi yang berasal dari ekstrak tanaman. Berbagai macam esktrak tanaman yang telah berhasil disintesis diantaranya daun juwet, kulit lemon, daun Malaka, akar tarum, jeruk nipis, gel aloevera, daun lidah buaya dan daun pagar jarak. Hasil dari nanopartikel tersebut telah sesuai dengan standart TiO2 melalui karakterisasi XRD, FTIR, SEM, TEM dan UV-Vis. Nanopartikel TiO2 yang baik memiliki ukuran partikel yang kecil dan energi band gap yang kecil, dapat diketahui dari SEM, TEM dan UV-Vis. Selain itu, nanopartikel TiO2 yang disintesis menggunakan ekstrak tanaman juga telah berhasil dimanfaatkan sebagai fotokatalis dalam mengurangi konsentrasi polutan diantaranya timbal (Pb), rhodamine B, coralline red, metilen biru, metilen oren, asam pikrat dan treated municipal wastewater (TWW). Dalam proses degradasi nanopartikel TiO2 dapat mencapai hingga 99%, dengan begitu nanopartikel TiO2 yang telah disintesis menggunakan green synthesis berhasil dimanfaatkan dalam aktivitas fotokatalis. Kata Kunci: Nanopartikel TiO2, Green synthesis, Fotokatalis Abstract               TiO2 nanoparticles are a good material to use as a photocatalyst, this has been proven by various successful studies. The synthetic and environmentally friendly method is the green synthesis method. The green synthesis method has attracted the attention of scientists because it is an environmentally friendly process with reducing agents derived from plant extracts. Various kinds of plant extracts that have been successfully synthesized include juwet leaves, lemon peel, Malacca leaves, tarum root, lime juice, aloevera gel, aloe vera leaves and jatropha leaves. The results of these nanoparticles comply with the TiO2 standard through XRD, FTIR, SEM, TEM and UV-Visible characterization. TiO2 nanoparticles have a small particle size and a small band gap energy, which can be seen from SEM, TEM and UV-Vis. In addition, TiO2 nanoparticles synthesized using plant extracts have also been successfully used as photocatalysts in reducing pollutant concentrations including lead (Pb), rhodamine B, coralline red, methylene blue, methylene orange, picric acid and treated municipal wastewater (TWW). In the process of degradation of TiO2 nanoparticles it can reach up to 99%, so that TiO2 nanoparticles that have been synthesized using green synthesis are successfully utilized in photocatalyst activities. Keywords: TiO2 Nanoparticles, Green synthesis, Photocatalyst

Green Synthesis Nanocomposite Membranes

A nanocomposite membrane includes a macroporous polymer membrane having a plurality of pores. A plurality of metal nanoparticles are synthesized and immobilized within those plurality of pores. The nanoparticles are reduced and capped with a green reducing and capping agent such as green tea extract

Green Synthesis of Nanomaterials

Nanomaterials possess astonishing physical and chemical properties. They play a key role in the development of novel and effective drugs, catalysts, sensors, and pesticides, to cite just a few examples. Notably, the synthesis of nanomaterials is usually achieved with chemical and physical methods needing the use of extremely toxic chemicals or high-energy inputs. To move towards more eco-friendly processes, researchers have recently focused on so-called “green synthesis”, where microbial, animal-, and plant-borne compounds can be used as cheap reducing and stabilizing agents to fabricate nanomaterials. Green synthesis routes are cheap, environmentally sustainable, and can lead to the fabrication of nano-objects with controlled sizes and shapes—two key features determining their bioactivity