scholarly journals Development and characterization of pomegranate and orange fruit peel extract based silver nanoparticles

2018 ◽  
Vol 4 (1) ◽  
pp. 72-85
Author(s):  
C.H. Vinay ◽  
P. Goudanavar ◽  
A. Acharya
Keyword(s):  
Particle Size ◽  
Silver Nanoparticles ◽  
Zeta Potential ◽  
Orange Peel ◽  
Nano Particles ◽  
Powdered Sample ◽  
Prepared Nanoparticles ◽  
Soxhlet Apparatus ◽  
Positive Results ◽  
Peel Extract

Background: Nanoparticles are those whose size ranges 1 nm to 100 nm. They are in different sizes and shape, such as triangular, spherical, irregular, etc. In recent years, nanoparticles synthesis has received considerable attention due to their unique properties and potential applications. Powdered sample (100gm)was extracted with 800ml ethanol by Soxhlet extraction method for 6 hours. The resultant extract was used to prepare nanoparticles.Methods: The main objective of the present work was to prepare pomegranate and orange peel extract based nano particles by chemical complexation method. Ethanolic extracts of pomegranate and orange peel were prepared by using Soxhlet apparatus and evaluated for phyto-chemical constituents.Results: Qualitative analysis of pomegranate peel showed positive results for Alkaloids, Anthraquinones, Saponins and Terpenoids, where as orange peel showed positive results for Alkaloids, Tannin and Saponins. The percentage moisture content obtained from the 2 fruits (pomegranate and orange) was 72% and 96.12% respectively. The pH was found to be 3.6 and 3.8 for pomegranate and orange respectively. A zeta potential of prepared nanoparticles for pomegranate extract was found in the range of -24.6 mV to -34.5 mV (P20 & P50) and -21.4 mV to 32.0 mV (O20 & O50) for orange extract, respectively. These values of nanoparticles having higher surface charge which indicates there is least chance of aggregation. The particle size for pomegranate extract was found in the range of 118.6 nm to 231.7 nm (P20 & P30) and 178.8 nm to 191.6 nm (O20 & O50) for orange extract, respectively. These range confirms that obtained particles were in nano range, i.e. <500 nm size. SEM results indicated the formation of nanoparticles and were relatively spherical in shape. Energy dispersive spectrometry (EDS) analysis confirms the presence of AgNPs.Conclusion: The silver nanoparticles were prepared by using fruit peels extract of pomegranate and orange. Computability study FT-IR showed no any change of functional groups of peel extracts in prepared nanoparticles. Zeta potential showed higher value hence less particle aggregation. Prepared nanoparticles were spherical in shape and having particle size of approximately 200±20nm. Further the study will be extended for anti-microbial and wound healing activities.JMMIHS,2018;4(1):72-85

scholarly journals Antimicrobial activity of the biosynthesized silver nanoparticles of Gossypium hirsutum leaves extract

2021 ◽  
Vol 15 (3) ◽  
pp. 189-198
Author(s):  
Laxman S Vijapur ◽  
Y Srinivas ◽  
Anita R Desai ◽  
Jayadev N Hiremath ◽  
Channayya I Swami ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Particle Size ◽  
Silver Nanoparticles ◽  
Zeta Potential ◽  
Gossypium Hirsutum ◽  
Colour Change ◽  
Ethanolic Extract ◽  
Inhibition Zone ◽  
Nano Particles ◽  
Diffusion Method

Silver nanoparticles were successfully synthesized using silver nitrate and Gossypium hirsutum leaves extracts by varying the different concentration of aqueous & ethanolic extract. The Gossypium hirsutum leaves extract was containing phytoconstituents like carbohydrates, proteins, glycosides, flavonoids, alkaloids, tannins and phenolic compounds. Formation of Silver Nano Particles was primarily confirmed by colour change of yellow to brownish color. Silver nanoparticle with phytochemicals was confirmed by UV-Visible spectra by observing peak absorption of aqueous and ethanolic SNP at 430.0 nm and 416.0 nm respectively. Dynamic light scattering of the prepared formulations revealed all the formulation were within nano range, The particle size of SNP were in between 282.1nm to 205.7nm& zeta potential -38.66mV to -4.80mv for aqueous extract & particle size of SNP for ethanolic extract were in between 201.7nm to 156.1nm & zeta potential -29.95mV to -25.36mv.SEM showed the bio synthesized SNP were found to be spherical with rough surface & agglomerated. Antimicrobial activity of biosynthesized SNP was evaluated by means of inhibition zone analysis through well diffusion method, where SNP biosynthesized from aqueous and ethanolic extracts of G.hirsutum showed good antimicrobial activity against studied microorganisms.

Development and Characterization of Pomegranate-Based Nanoparticles for Drug Delivery Applications

2018 ◽  
Vol 11 (1) ◽  
pp. 3984-3989
Author(s):  
Vinay C H ◽  
Gulzar Ahmed Mohammed ◽  
Prakash Goudanavar ◽  
Ankit Acharya Acharya
Keyword(s):  
Energy Dispersive Spectrometry ◽  
Chemical Constituents ◽  
Nano Particles ◽  
Pomegranate Peel ◽  
Eds Analysis ◽  
Soxhlet Apparatus ◽  
Pomegranate Peel Extract ◽  
Positive Results ◽  
Peel Extract

The main objective of the present work was to prepare pomegranate peel extract based nano particles by chemical complexation method. Ethanolic extracts of pomegranate peel were prepared by using Soxhlet apparatus and evaluated for phyto-chemical constituents. Qualitative analysis showed that pomegranate peel extract showed positive results for alkaloids, anthraquinones, saponins and terpenoids.The percentage moisture content and pH of the extract was found to be 72% and 3.6 respectively. A zeta potential and particle size of prepared nanoparticles was found in the range of -24.6 to– 34.5 mV and 118.6 nm to 231.7 nm, respectively. These range confirms that obtained particles were in nano range, i.e. <500 nm size. SEM results indicated the formation of nanoparticles and were relatively spherical in shape. Energy dispersive spectrometry (EDS) analysis confirms the presence of AgNPs. Further the study will be extended for anti-microbial and wound healing activities.          

scholarly journals Silver nanoparticles biogenic synthesized using an orange peel extract and their use as an anti-bacterial agent

2014 ◽  
Vol 9 (3) ◽  
pp. 34-40 ◽  
Author(s):  
A. Awad Manal ◽  
A. Hendi Awatif ◽  
M. O. Ortashi Khalid ◽  
F. A. Elradi Dalia ◽  
E. Eisa Nada ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Orange Peel ◽  
Bacterial Agent ◽  
Orange Peel Extract ◽  
Peel Extract

scholarly journals Biosynthetic potential assessment of four food pathogenic bacteria in hydrothermally silver nanoparticles fabrication

2019 ◽  
Vol 8 (1) ◽  
pp. 629-634 ◽  
Author(s):  
Amir Rahimirad ◽  
Afshin Javadi ◽  
Hamid Mirzaei ◽  
Navideh Anarjan ◽  
Hoda Jafarizadeh-Malmiri
Keyword(s):  
Particle Size ◽  
Silver Nanoparticles ◽  
Zeta Potential ◽  
Pathogenic Bacteria ◽  
Heating Time ◽  
Synthesis Process ◽  
Ag Nps ◽  
Physico Chemical ◽  
Minimum Particle Size ◽  
Particle Size Analyzer

Abstract Silver nanoparticles (Ag NPs) were synthesized using four pathogenic bacterial extracts namely, Bacillus cereus, E. coli, Staphylococcus aureus and Salmonella entericasubsp.enterica. Synthesis process were hydrothermally accelerated using temperature, pressure and heating time of 121°C, 1.5 bar ad 15 min. Physico- chemical characteristics of the fabricated Ag NPs, including, particle size, polydispersity index (PDI), zeta potential, broad emission peak (λmax) and concentration were evaluated using UV-Vis spectrophotometer and dynamic light scattering (DLS) particle size analyzer. Furthermore, main existed functional groups in the provided bacterial extracts were recognized using Fourier transform infrared spectroscopy. The obtained results revealed that two main peaks were detected around 3453 and 1636.5 cm-1, for all bacterial extracts, were interrelated to the stretching vibrations of hydroxyl and amide groups which those had key roles in the reduction of ions and stabilizing of the formed Ag NPs. The results also indicated that, Ag NPs with much desirable characteristics, including minimum particle size (25.62 nm) and PDI (0.381), and maximum zeta potential (-29.5 mV) were synthesized using S. e. subsp. enterica extract. λmax, absorbance and concentration values for the fabricated Ag NPs with this bacterial extract were 400 nm, 0.202% a.u. and 5.87 ppm.

scholarly journals Green Synthesis of Silver Nanoparticles Using Pomegranate and Orange Peel Extracts and Their Antifungal Activity against Alternaria solani, the Causal Agent of Early Blight Disease of Tomato

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2363
Author(s):  
Yasser S. Mostafa ◽  
Saad A. Alamri ◽  
Sulaiman A. Alrumman ◽  
Mohamed Hashem ◽  
Zakaria A. Baka
Keyword(s):  
Silver Nanoparticles ◽  
Orange Peel ◽  
Alternaria Solani ◽  
Pomegranate Peel ◽  
Orange Peels ◽  
Crude Extracts ◽  
Biosynthesized Agnps ◽  
Pomegranate Peel Extract ◽  
Orange Peel Extract ◽  
Peel Extract

This study aimed to synthesize silver nanoparticles (AgNPs) by pomegranate and orange peel extracts using a low concentration of AgNO3 solution to controlearly blight of tomato caused by Alternaria solani. The pathogen was isolated from infected tomato plants growing in different areas of Saudi Arabia. The isolates of this pathogen were morphologically and molecularly identified. Extracts from peels of pomegranate and orange fruits effectively developed a simple, quick, eco-friendly and economical method through a synthesis of AgNPs as antifungal agents against A. solani. Phenolic content in the pomegranate peel extract was greater than orange peel extract. Phenolic compounds showed a variation of both peel extracts as identified and quantified by High-Performance Liquid Chromatography. The phenolic composition displayed variability as the pomegranate peel extract exhibited an exorbitant amount of Quercitrin (23.62 mg/g DW), while orange peel extract recorded a high amount of Chlorogenic acid (5.92 mg/g DW). Biosynthesized AgNPs were characterized using UV- visible spectroscopy which recorded an average wavelength of 437 nm and 450 nm for pomegranate and orange peels, respectively. Fourier-transform infrared spectroscopy exhibited 32x73.24, 2223.71, 2047.29 and 1972.46 cm−1, and 3260.70, 1634.62, 1376.62 and 1243.76 cm−1 for pomegranate and orange peels, respectively. Transmission electron microscopy showed spherical shape of nanoparticles. Zetasizer analysis presented negative charge values; −16.9 and −19.5 mV with average particle sizes 8 and 14 nm fin case of pomegranate and orange peels, respectively. In vitro, antifungal assay was done to estimate the possibility of biosynthesized AgNPs and crude extracts of fruit peels to reduce the mycelial growth of A. solani. AgNPs displayed more fungal mycelial inhibition than crude extracts of two peels and AgNO3. We recommend the use of AgNPs synthesized from fruit peels for controlling fungal plant pathogens and may be applied broadly and safely in place by using the chemical fungicides, which display high toxicity for humans.

scholarly journals Design, Development and Evaluation Of Anti-Hypertensive Drug Solid Lipid Nano Particles

2021 ◽  
Vol 11 (4) ◽  
Keyword(s):  
Particle Size ◽  
Drug Release ◽  
Zeta Potential ◽  
Entrapment Efficiency ◽  
Nano Particles ◽  
Release Mechanism ◽  
In Vitro Drug Release ◽  
Solid Lipid ◽  
Wide Range

Recently, solid lipid Nano-particles have received much attention by the researchers owing to its biodegradability, biocompatibility and the ability to deliver a wide range of drugs. The aim of the present study was to design Diltiazem solid lipid Nano-particles and to evaluate them. Diltiazem solid lipid Nano-particles were prepared by hot homogenization technique using different lipids (Tristearin, GMS and Comprital), soy lecithin as stabilizers and tween 80, Poloxamer as surfactants. The Nano-particles were evaluated for particle size & PDI, zeta potential, entrapment efficiency and in vitro drug release. The particle size ranged from 49.7 to 523.7 nm. PDI of all formulations were good within the range of 0.189 to 0.427. The zeta potential ranged from -10.5 to -29.6 Mv, Entrapment efficiency of all formulations were observed was in the range of 78.68 to 95.23 %. The cumulative percentage release of Diltiazem from different Diltiazem Nano-particles varied from 53.36 to 88.74% depending upon the drug lipid ratio and the type of lipid used. The average percentage of drug released from different SLNs after 24 hours showed in the following order: F9 (53.35%) < F6 (56.75%) < F4 (61.74%) < F7 (63.8%) < F5(67.77%) < F8(69.04%) < F3(75.31%) < F1(79.36%) <F2 (88.74%) respectively. The release kinetic studies showed that the release was first order diffusion controlled and the n values obtained from the Korsmeyer-Peppa’s model indicated the release mechanism was Quasi-Fickian type (n-value of 0.47). Keywords: Diltiazem, solid lipid Nano-particles, FTIR, in vitro drug release.

scholarly journals Nanostructural Features of Silver Nanoparticles Powder Synthesized through Concurrent Formation of the Nanosized Particles of Both Starch and Silver

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
A. Hebeish ◽  
M. H. El-Rafie ◽  
M. A. El-Sheikh ◽  
Mehrez E. El-Naggar
Keyword(s):  
Particle Size ◽  
Silver Nanoparticles ◽  
Zeta Potential ◽  
High Speed ◽  
Chemical Reduction ◽  
Reduction Process ◽  
Nanosized Particles ◽  
High Concentration ◽  
Particle Size Analyzer ◽  
Vis Spectroscopy

Green innovative strategy was developed to accomplish silver nanoparticles formation of starch-silver nanoparticles (St-AgNPs) in the powder form. Thus, St-AgNPs were synthesized through concurrent formation of the nanosized particles of both starch and silver. The alkali dissolved starch acts as reducing agent for silver ions and as stabilizing agent for the formed AgNPs. The chemical reduction process occurred in water bath under high-speed homogenizer. After completion of the reaction, the colloidal solution of AgNPs coated with alkali dissolved starch was cooled and precipitated using ethanol. The powder precipitate was collected by centrifugation, then washed, and dried; St-AgNPs powder was characterized using state-of-the-art facilities including UV-vis spectroscopy, Transmission Electron Microscopy (TEM), particle size analyzer (PS), Polydispersity index (PdI), Zeta potential (ZP), XRD, FT-IR, EDX, and TGA. TEM and XRD indicate that the average size of pure AgNPs does not exceed 20 nm with spherical shape and high concentration of AgNPs (30000 ppm). The results obtained from TGA indicates that the higher thermal stability of starch coated AgNPS than that of starch nanoparticles alone. In addition to the data obtained from EDX which reveals the presence of AgNPs and the data obtained from particle size analyzer and zeta potential determination indicate that the good uniformity and the highly stability of St-AgNPs).

Evaluation of the Conditions for the Synthesis of Silver Nanoparticles from Orange Peels and its Antibacterial Effect

2020 ◽  
Vol 14 (3) ◽  
pp. 250-258
Author(s):  
Jose E. Quiroz-Hernández ◽  
Oxana V. Kharissova ◽  
Victor E. Aguirre-Arzola ◽  
Guillermo C.G. Martinez-Avila ◽  
Uziel Castillo-Velazquez
Keyword(s):  
Silver Nanoparticles ◽  
Silver Nitrate ◽  
Plant Extracts ◽  
Antibacterial Effect ◽  
Orange Peel ◽  
Orange Peels ◽  
Agroindustrial Waste ◽  
Vis Spectroscopy ◽  
Orange Peel Extract ◽  
Peel Extract

Aims: To use an agroindustrial waste (orange peels) as a source of polyphenols as a reducing medium for obtaining silver nanoparticles by greener method. Background: Several techniques have been employed for AgNPs synthesis, nevertheless, most of them involve the use of toxic chemicals in the process. The use of fungi, bacteria, and plant extracts as subtracts for green synthesis is an ecofriendly alternative, although hypothetic, route for AgNPs large scale synthesis. In the case of plant extracts, it is believed that polyphenols are the biomolecules responsible for the reduction and stabilization of the Ag+ ions into AgNPs, being a sustainable and ecological option; polyphenols could be obtained from plant waste and agroindustrial subproducts. Objective: To develop an efficient, greener, and low-cost method of AgNPs production using natural products. Methods: The basic principle of silver nanoparticles synthesis is the interaction in a mixture of silver nitrate (source of Ag+ ions) and the orange peel extract (reducing and stabilizing agent) under certain conditions. Five treatments were carried out, evaluating several parameters during AgNPs synthesis such as pH, orange peel extract-silver nitrate ratio, time and conditions of incubation, irradiation of UV light, irradiation of microwave, and temperature. Result: The synthesis of silver nanoparticles from an agroindustrial waste as the orange peel was successfully carried out and checked by visual evaluation, UV-Vis spectroscopy, and EDS analysis. The particle size was estimated between 42.82 nm to 151.75 nm, having a spherical and ovoid morphology. Discussion: Through the analysis of several synthesis conditions, it has become possible to establish a suitable treatment to increase antibacterial yield and evaluate morphology and size traits in order to acquire the best conditions for a future industrial scale synthesis. Conclusion: The orange peel aqueous extract resulted as a great source of polyphenols, allowing the successful synthesis of silver nanoparticles in mild conditions. Thus, obtained AgNPs revealed an increased antibacterial effect and potential against Gram-positive bacteria such as Staphyloccocus aureus.

scholarly journals BIO-NANOPARTICLES: GREEN SYNTHESIS OF GOLD NANOPARTICLES AND ASSESSMENT OF BIOLOGICAL EVALUATION

2019 ◽  
pp. 133-138
Author(s):  
RATIH DYAH PERTIWI ◽  
SUWALDI ◽  
ERNA PRAWITA SETYOWATI ◽  
RONNY MARTIEN
Keyword(s):  
Particle Size ◽  
Gold Nanoparticles ◽  
Zeta Potential ◽  
Absorption Spectra ◽  
Biological Activities ◽  
Average Particle Size ◽  
Antioxidant Properties ◽  
Biological Evaluation ◽  
Nano Particles ◽  
Average Particle

Objective: The design like bio-nano particles are beneficial over chemical and physical composition due to the eco-friendly and lower-cost synthesis of nanoparticles. The current study was purposed for the biosynthesis of gold nanoparticles (GNPs) and their antioxidant evaluation. Methods: Aqua extract of Muntingia calabura, Linn was applied for the synthesis of GNPs and confirmed by UV visible and ATR-Fourier Transform Infra-Red (ATR-FTIR) spectroscopy. Transmission Electron Microscope and Particle Size Analyser were used for the shape zeta potential and determination of size. Antioxidant activity was examined by DPPH (1,1 diphenyl-2-picryl-hydrazyl) radical scavenging method. Results: The result showed that UV–vis absorption spectra of H Au Cl4 at 290 nm while absorption spectra of biosynthesis gold nanoparticles at 540 nm. The forming of nanoparticles were spherical, having an average particle size of 88 nm, and the result of zeta potential was 9.5 mV. Analysis of ATR-FTIR revealed the possible involvement of phytochemical constituents in gold nanoparticles of aqua extract. Green synthesized nanoparticles showed enhanced antioxidant properties. Conclusion: Green synthesized GNPs showed enhanced biological activities. Present results also support the benefit of using the biosynthesis method for the production of gold nanoparticles that have the potential of antioxidant and biology activities.

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