Harnessing the Power of Seabuckthorn in Green Synthesis of Nanoparticles

Sea buckthorn extract mitigates chronic obstructive pulmonary disease by suppression of ferroptosis via scavenging ROS and blocking p53/MAPK pathways

Food packaging has to preserve food products, not only providing protection against mechanical factors, but also providing antioxidant and antimicrobial protection. This article describes the effects of PBS film modification with two sea buckthorn extracts (chloroform extract and supercritical CO2 extract) at two different concentrations (1 or 5 g per 100 g of polymer). The films were tested to determine the effect of the active additive on optical properties, mechanical properties, moisture sorption, antioxidant and antimicrobial properties (against Escherichia coli, Staphylococcus aureus, and Candida albicans). The extracts improved free radical scavenging significantly (up to 41.13 ± 1.31% for PBS-CO2 0.05) and reduced the number of microorganisms studied (more than a 6000-fold reduction for E. coli, a 1400-fold reduction in S. aureus and a 1200-fold reduction in C. albicans). The ability to block UV radiation was dependent on the concentration of extracts in the polymer matrix. No significant changes were noticed for mechanical properties or FTIR spectra. The films obtained appear to be potential packaging materials for food products with special protective properties.

Nanobiotechnology is an encouraging and noticeable field of nanotechnology. In recent years, the demands for the synthesis of biocompatible nanoparticles (NPs) are increasing for various applications in different areas such as health, medicine, environmental pollution, and agriculture, etc. A green synthesis of various NPs from different metal/ metal ions using different plant extracts has been extensively studied. Green synthesis of NPs is an alternative way of chemical and physical methods of NPs synthesis and is considered an eco-friendly approach in nanotechnology. Green synthesis of NPs is affected by various factors such as pH, temperature, and incubation time which must be considered to obtain an optimal result. NPs synthesized via green methodology have many potential applications in environment and climate change, biomedicals and agriculture. This mini-review provides brief information about different approaches and methods in synthesizing NPs, their characterization by various instrumental applications, and their applications in many areas that are important for humans, animals, and plants.

Nanotechnology has rapidly advanced over the recent past. Top-down and bottom-up approaches are the two major processes used to synthesize nanoparticles. Most of chemical and physical methods of nanoparticle synthesis are time consuming and costly. Most methods require high temperatures, vacuum conditions or harsh chemicals which may have adverse effects on involved persons. In recent years, researchers have shown immense interest in the environment - friendly green synthesis of nanoparticles. Honey mediated green synthesis is a relatively novel green synthesis method that has been used in recent years to synthesize metal nanoparticles. Honey-mediated green synthesis of nanoparticles is a simple, rapid, cost-effective, biocompatible, reproducible, and safe method. In the present work, we present the sunlight - induced green synthesis of silver nanoparticles using honey from aqueous silver nitrate. We studied the effect of light intensity on the synthesis of silver nanoparticles and also analyzed the growth of the nanoparticles. The particle size is determined from plasmon resonance using Mie theory.Nanotechnology has rapidly advanced over the recent past. Top-down and bottom-up approaches are the two major processes used to synthesize nanoparticles. Most of chemical and physical methods of nanoparticle synthesis are time consuming and costly. Most methods require high temperatures, vacuum conditions or harsh chemicals which may have adverse effects on involved persons. In recent years, researchers have shown immense interest in the environment - friendly green synthesis of nanoparticles. Honey mediated green synthesis is a relatively novel green synthesis method that has been used in recent years to synthesize metal nanoparticles. Honey-mediated green synthesis of nanoparticles is a simple, rapid, cost-effective, biocompatible, reproducible, and safe method. In the present work, we present the sunlight - induced green synthesis of silver nanoparticles using honey from aqueous silver nitrate. We studied the effect of light intensity on the synthesis of silver nanoparticles and also analyzed the growt...

A critical need in the field of nanotechnology is the development of a sustainable and eco-friendly process for the synthesis of metallic nanoparticles (NPs). To accomplish this, the use of live plants becomes essential for the production of low-cost, energy-efficient, and nontoxic metallic NPs. In this study, we tried in-vivo synthesis (green synthesis) of silver and gold NPs using seeds of bean, radish, and alfalfa, which were grown hydroponically in aqueous solutions containing metal salts, 20-25 nm sized NPs were found on the inner surfaces of the plants' vascular cylinders and cortex. The amounts of NPs taken up by the intracellular systems were clearly dependent on the exposure time and concentration of the metal salts. Although these results regarding the green synthesis of NPs on the growth of plant species are somewhat interesting and effective, metal salts adversely affected the root growth of the plants. Silver ions in the growth media showed a more negative impact on root growth compared to gold ions. Therefore, even though biosynthesis of metal NPs using live plants is considered as green synthesis, we have to consider their phytotoxicity on plant growth.

Chapter 17 - Broad spectrum antibacterial silver nanoparticle green synthesis: Characterization, and mechanism of action

The present study was conducted to evaluate the total phenolic content (TPC) and antibacterial properties of crude extracts of sea buckthorn ( Hippophae rhamnoides L.) pomace, seeds and leaves against 17 foodborne pathogens. The methanolic extract of leaves exhibited high total phenolic content (278.80 mg GAE/g extract) and had low minimum inhibitory concentration (MIC) value of 125 μg/ml against Listeria monocytogenes . Salmonella typhimurium strain was found to be resistant against all tested extracts. The antilisterial activity of the methanolic extract of leaves was tested on carrots. Bacterial enumeration was significantly reduced by 0.15 to 0.31, 0.26 to 1.72 and 0.59 to 4.10 log cfu/g after 0 to 60 min exposure when treated with 125, 2500 and 5000 μg/ml extract, respectively. Thus, in addition to its use as a functional food ingredient, leaves extract from sea buckthorn (SBT) can possibly be used as a biosanitizer in food industries. Key words: Antimicrobial activity, Hippophae, Listeria monocytogenes , natural sanitizer, seabuckthorn.

In this review, we examine ‘greener’ routes to nanoparticles of copper oxides, an emphasis on recent developments. natural products or extracted from natural products. such as different plant extracts, have been used as reductants and as capping agents during synthesis. A very easy, efficient and environment-friendly protocol was developed to synthesize green nanoparticles with an aqueous extract of the various plant. Nanoparticles and their compounds are known to exert a strong inhibitory and microbial activity on bacteria, viruses, and fungi. Green synthesis, characterization, and application of nanoparticles (NPs) are becoming an important challenge in nanotechnology. Green synthesis of nanoparticles is made in large quantities worldwide for a wide range of applications. This technique is very safe and environmentally friendly.

Nanotechnology, which involves the synthesis, design and application of materials or devices with sizes in the 1-100 nm range, has been an important topic in various basic and applied sciences such as medicine, pharmacy, dentistry, chemistry, biology, environment and materials science. Nanotechnology, which has ease of application, is a new emerging technology. The rapid increase in nanotechnological research around the world in recent years has allowed the development of nanoscale devices and new materials. Nanotechnology has opened up new dimensions in the field of biotechnology and nanomedicine, among various other important applications such as drug delivery, electronics, cosmetics, personal care products and biosensors. Nanoparticles (NPs), which form the basis of nanotechnology, have remarkable properties such as specific sizes, surface structures, chemical compositions, large surface area volume ratios, electronic structure, and interfacial reactivity. As the sizes and shapes of NPs change, the physical, chemical, optical, electrical, thermal, catalytic, bioactivity and toxicity properties of the particles also change. NPs of various shapes and sizes are synthesized by three different methods as physical, chemical and biological. Synthesis of NPs by conventional methods such as physical and chemical methods causes high energy consumption, low efficiency, high cost and formation of toxic products. Green synthesis, which has been widely used recently, is a more cost-effective, easy to synthesize and environmentally friendly method using biological agents. Different natural and harmless biomaterials such as plants, plant extracts, fungi, algae, yeasts, bacteria, virus DNA are used for the biological synthesis of different NPs. With this method, the effect of chemicals is greatly reduced and their damage is eliminated as much as possible. In addition, it does not require high pressure and high temperature values. Many metals and metal oxide nanoparticles such as gold, zinc, silver, palladium, manganese, iron oxide, titanium dioxide, copper oxide and lead oxide are synthesized in a single step with the green synthesis method. The fact that the green synthesis method has many advantages compared to other processes and the continuous development of nanotechnology allows the green synthesis method to develop and be used more widely. The aim of this study is to reveal the importance of green synthesis, the biomaterials used in green synthesis, the properties and usage areas of synthesized NPs.

Environmental degradation is a growing concern, driving researchers to explore eco-friendly nanoparticle (NP) synthesis, for diverse applications. Within this context, the employment of olive oil waste (OOW) as a green source for the synthesis of NPs has emerged as a viable alternative to conventional techniques. The olive industry has a significant impact in the Mediterranean region, and alongside it, comes the OOW, where most of it cannot be left untreated. In the present review, a comprehensive overview of the NPs’ green synthesis derived from OOW and its potential applications in both environmental and health areas have been assessed, outlining its major challenges and potential outcomes for future research. Both principles and methods of green NPs synthesis were also explored, focusing on the unique properties of OOW as an effective agent for reduction and stabilization, as well as the characterization techniques used for characterizing the synthesized NPs. The OOW-derived NPs can have a wide variety of environmental applications including water purification, pollutant degradation, and remediation of contaminated environments. In the health field, the OOW applications include drug delivery systems, antimicrobial activity and cancer therapy. These OOW NPs have been successfully used as efficient drug delivery vehicles to cancer cells, enhancing treatment outcomes and potentially minimizing side effects. However, it is imperative to point out the importance of performing in-depth toxicity assessments, particularly at higher concentrations of NPs.

Background: Nanotechnology is one the most crucial areas of research with a wide biomedical application including drug delivery. Conventionally physical, and chemical methods have been used for the synthesis of metal-based nanoparticles (NPs) however, they show cytotoxicity and even not better for sustainable environment. Therefore, green synthesis of NPs using plant extract is a better alternative. Herein, we report the synthesis, characterization, and antimicrobial activity of silver nanoparticles with rhizome extract of Curcuma longa (AgNPs-RECL). Objective: To perform green synthesis of AgNPs-RECL, followed by their characterization via scanning electron microscopy (SEM), ultraviolet (UV)-visible spectroscopy, X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), and high-performance liquid chromatography (HPLC). Further, antimicrobial activity of AgNPs-RECL was examined using disc diffusion test. Result: AgNPs-RECL showed antimicrobial activity towards two plant pathogenic bacteria Xanthomonas anoxopodis and Erwinia amylovora. Conclusion: It was concluded that AgNPs-RECL have the potential to inhibit plant pathogenic bacteria like Xanthomonas and Erwinia, which could be useful for nano drug delivery applications.

Hammada scoparia (Pomel) is a powerful plant with important biological properties. In this study, we report on the green synthesis of silver-doped nickel and copper nanoparticles (NPs) in the presence of H. scoparia leaf extract using a self-propagating sol–gel autocombustion process. The synthesized NiO, CuO, Ag-NiO, and Ag-CuO NPs were characterized with Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Afterward, they were tested for their antimicrobial activity as well as their potential to remove dyes from aqueous solutions using adsorption processes for malachite green (MG) and photocatalytic degradation for methylene blue (MB). Our results showed that the mass of the adsorbent had a significant effect on the adsorption rate, which increased to reach a maximum value of 98%. The Ag-CuO NP showed the best final conversion of MB (97.95%) compared to NiO, CuO, and Ag-NiO. In addition, we noted that the NPs doped with silver had the best performance in the removal of dyes. These results indicated that the photocatalytic performance was significantly improved after the addition of silver. Moreover, the antimicrobial activity showed that the studied NPs had moderate activity against the tested bacteria and a weak activity or were ineffective against Candida albicans. Therefore, the green synthesis of NPs from H. scoparia leaf extract is considered a sustainable alternative to removing dyes from aqueous solutions. However, further investigation should be performed on the other dyes to understand the overall effectiveness of these NPs.

Male infertility is a distressingly common condition affecting about 1 in 20 of the male population. In a majority of the cases, the male partner produces sufficient numbers of spermatozoa to achieve fertilization but there are functional defects in these cells that prevent conception from occurring. In this study, the effects of Wi-Fi radiation on spermatogenesis, testes and testosterone of large white male rats were studied, and also hydro alcoholic extract of sea buckthorn fruit were used as a protective agent against the effects of Wi-Fi radiation, and the comparative study was done . For this study 60 white male laboratory rats weighing 200-250 g were selected then tested in good conditions of light and food. The mice were randomly divided in terms of Wi-Fi Radiation and received gavage Sea buckthorn into 6 out of groups of 10.It was found that in the groups that had received Wi-Fi radiation, waves did not affect sperm count, testes weight, testosterone and testicular tissue, but it caused a significant decrease in fertilized sperm motility, and sea buckthorn extract could work as a protective agent against the radiations. According to the results of this research, it can be the probability that Sea buckthorn extract, having antioxidant substance can prevent destructive effects of waves that cause free radicals and having vitamin E improves sperm quality.

Green synthesis of silver nanoparticles on biosilica diatomite: Well-dispersed particle formation and reusability

The aim of this study was to evaluate the physico-chemical, microbiological, sensory properties and antioxidant activity of the functional cream cheese prepared with lipophilic extracts of sea buckthorn (Hippophae rhamnoides L.). The first step of the research consisted of an evaluation of the physico-chemical characteristics and the antioxidant capacity of the sea buckthorn lipophilic extracts. The sea buckthorn extracts had a significant antioxidant capacity (67.04 ± 2.67%), a content of total carotenoids of 8.27 ± 0.01mgL-1 and a content of total polyphenols of 1842.86 ± 1.41mg/100gdry vegetal material. The addition of the sea buckthorn extracts did not negatively affect the fresh cream cheese's sensory characteristics. The addition of sea buckthorn extracts to the cream cheese resulted in an increase of antiradical activity and dry matter content, a decrease in acidity and higher growth inhibitition of germs.