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Total 2868 results found since Jan 2013.

Molecules, Vol. 28, Pages 4596: Pb(II) Uptake from Polluted Irrigation Water Using Anatase TiO2 Nanoadsorbent
Ramos-Guivar The adsorption characteristics of titanium dioxide nanoparticles (nano-TiO2) for the removal of Pb(II) from irrigation water were investigated in this work. To accomplish this, several adsorption factors, such as contact time and pH, were tested to assess adsorption efficiencies and mechanisms. Before and after the adsorption experiments, commercial nano-TiO2 was studied using X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM and TEM), energy dispersive spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The outcomes showed that anatase nano-TiO2 was remarkably efficie...
Source: Molecules - June 7, 2023 Category: Chemistry Authors: Miguel A. Vasquez-Caballero Yamerson Canchanya-Huaman Angie F. Mayta-Armas Jemina Pomalaya-Velasco Noemi-Raquel Checca-Huaman Y éssica Bendezú-Roca Juan A. Ramos-Guivar Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4614: Enhancing Oil Recovery by Polymeric Flooding with Purple Yam and Cassava Nanoparticles
In this study, new nano-polymeric materials have been prepared from purple yam and cassava starches. The yield of purple yam nanoparticles (PYNPs) was 85%, and that of cassava nanoparticles (CSNPs) was 90.53%. Synthesized materials were characterized through particle size distribution (PSA), Zeta potential distribution, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and transmission electron microscopy (TEM). The performance of PYNPs in recovering oil was better than CSNPs, as found from the recovery experiments. Zeta potential distribution results confirmed the stability of PYNPs ...
Source: Molecules - June 7, 2023 Category: Chemistry Authors: Hasanain A. Al-Jaber Agus Arsad Muhammad Tahir Mustafa Jawad Nuhma Sulalit Bandyopadhyay Abdulmunem R. Abdulmunem Anis Farhana Abdul Rahman Zakiah binti Harun Augustine Agi Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4611: Screening of Volatile Compounds, Traditional and Modern Phytotherapy Approaches of Selected Non-Aromatic Medicinal Plants (Lamiaceae, Lamioideae) from Rtanj Mountain, Eastern Serbia
In conclusion, we can say that selected plants could be used as natural agents for promoting health, as a source of raw material in the food industry, and as supplements, as well as in the pharmaceutical industry for developing plant-based remedies for prevention and treatment of many diseases, especially cancer.
Source: Molecules - June 7, 2023 Category: Chemistry Authors: Milica A ćimović Jovana Stankovi ć Jeremić Ana Miljkovi ć Milica Rat Biljana Lon čar Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4607: Synergistic Influence of Yeast Extract and Calcium Oxide Nanoparticles on the Synthesis of Bioactive Antioxidants and Metabolites in Swertia chirata In Vitro Callus Cultures
In this study, we investigated the effects of elicitation with yeast extract and calcium oxide nanoparticles (CaONPs) on in vitro cultures of Swertia chirata (Roxb. ex Fleming) Karsten. Specifically, we examined the effects of different concentrations of CaONPs in combination with different concentrations of yeast extract on various parameters related to callus growth, antioxidant activity, biomass and phytochemical contents. Our results showed that elicitation with yeast extract and CaONPs had significant effects on the growth and characteristics of callus cultures of S. chirata. The treatments involving yeast extract and...
Source: Molecules - June 7, 2023 Category: Chemistry Authors: Tauqeer Sardar Mehwish Maqbool Muhammad Ishtiaq Muhammad Waqas Mazhar Mohamed A. El-Sheikh Ryan Casini Eman A. Mahmoud Hosam O. Elansary Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4573: Magnetic Nanozyme Based on Loading Nitrogen-Doped Carbon Dots on Mesoporous Fe3O4 Nanoparticles for the Colorimetric Detection of Glucose
unjie Liu The simple and accurate monitoring of blood glucose level is of great significance for the prevention and control of diabetes. In this work, a magnetic nanozyme was fabricated based on loading nitrogen-doped carbon dots (N-CDs) on mesoporous Fe3O4 nanoparticles for the colorimetric detection of glucose in human serum. Mesoporous Fe3O4 nanoparticles were easily synthesized using a solvothermal method, and N-CDs were then prepared in situ and loaded on the Fe3O4 nanoparticles, leading to a magnetic N-CDs/Fe3O4 nanocomposite. The N-CDs/Fe3O4 nanocomposite exhibited good peroxidase-like activity and could catalyz...
Source: Molecules - June 6, 2023 Category: Chemistry Authors: Yunxi Huang Zhanling Ding Yutong Li Fengna Xi Junjie Liu Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4562: Progress in the Mechanism of the Effect of Fe3O4 Nanomaterials on Ferroptosis in Tumor Cells
nbo Mou Ferroptosis is a new form of iron-dependent programmed cell death discovered in recent years, which is caused by the accumulation of lipid peroxidation (LPO) and reactive oxygen species (ROS). Recent studies have shown that cellular ferroptosis is closely related to tumor progression, and the induction of ferroptosis is a new means to inhibit tumor growth. Biocompatible Fe3O4 nanoparticles (Fe3O4-NPs), rich in Fe2+ and Fe3+, act as a supplier of iron ions, which not only promote ROS production but also participate in iron metabolism, thus affecting cellular ferroptosis. In addition, Fe3O4-NPs combine with other...
Source: Molecules - June 5, 2023 Category: Chemistry Authors: Yaxuan Wang Xiao Wu Xiaoying Bao Xianbo Mou Tags: Review Source Type: research

Molecules, Vol. 28, Pages 4546: Photocatalytic Activity of the Blends Based on TiO2 Nanoparticles and Reduced Graphene Oxide for Degradation of Acetaminophen
la Baibarac The aim of this work is to highlight the influence of blends based on TiO2 nanoparticles and reduced graphene oxide (RGO) on the photodegradation of acetaminophen (AC). To this end, the catalysts of TiO2/RGO blends with RGO sheet concentrations equal 5, 10, and 20 wt. % were prepared by the solid-state interaction of the two constituents. The preferential adsorption of TiO2 particles onto the RGO sheets’ surfaces via the water molecules on the TiO2 particle surface was demonstrated by FTIR spectroscopy. This adsorption process induced an increase in the disordered state of the RGO sheets in th...
Source: Molecules - June 4, 2023 Category: Chemistry Authors: Monica Daescu Madalina Chivu Elena Matei Catalin Negrila Oana Cramariuc Mihaela Baibarac Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4527: Biosynthesis of Nanoparticles from Various Biological Sources and Its Biomedical Applications
Bum Cho In the last few decades, the broad scope of nanomedicine has played an important role in the global healthcare industry. Biological acquisition methods to obtain nanoparticles (NPs) offer a low-cost, non-toxic, and environmentally friendly approach. This review shows recent data about several methods for procuring nanoparticles and an exhaustive elucidation of biological agents such as plants, algae, bacteria, fungi, actinomycete, and yeast. When compared to the physical, chemical, and biological approaches for obtaining nanoparticles, the biological approach has significant advantages such as non-toxicity and ...
Source: Molecules - June 2, 2023 Category: Chemistry Authors: Gopalu Karunakaran Kattakgoundar Govindaraj Sudha Saheb Ali Eun-Bum Cho Tags: Review Source Type: research

Molecules, Vol. 28, Pages 4516: Targeting Myeloperoxidase Activity and Neutrophil ROS Production to Modulate Redox Process: Effect of Ellagic Acid and Analogues
thys-Mickalad Malaria is an infectious disease caused by a Plasmodium genus parasite that remains the most widespread parasitosis. The spread of Plasmodium clones that are increasingly resistant to antimalarial molecules is a serious public health problem for underdeveloped countries. Therefore, the search for new therapeutic approaches is necessary. For example, one strategy could consist of studying the redox process involved in the development of the parasite. Regarding potential drug candidates, ellagic acid is widely studied due to its antioxidant and parasite-inhibiting properties. However, its low oral bioavaila...
Source: Molecules - June 2, 2023 Category: Chemistry Authors: Gilles Degotte Michel Frederich Pierre Francotte Thierry Franck Thomas Colson Didier Serteyn Ange Mouithys-Mickalad Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4498: Preparation of Biocompatible Manganese Selenium-Based Nanoparticles with Antioxidant and Catalytic Functions
In this study, we prepared a composite nanoparticle of manganese dioxide and selenite by a one-step redox method, and their stability under physiological conditions was improved with a bovine serum protein modification to obtain MnO2/Se-BSA nanoparticles (SMB NPs). In the SMB NPs, manganese dioxide and selenite endowed the SMB NPs with acid-responsive and catalytic, and antioxidant properties, respectively. The weak acid response, catalytic activity, and antioxidant properties of composite nanoparticles were verified experimentally. Moreover, in an in vitro hemolysis assay, different concentrations of nanoparticles were in...
Source: Molecules - June 1, 2023 Category: Chemistry Authors: Yang Yu Peng Fan Jinfeng Li Shige Wang Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4497: Carbon Adsorbents Obtained from Pistachio Nut Shells Used as Potential Ingredients of Drinking Water Filters
icki Water resources are increasingly degraded due to the discharge of waste generated in municipal, industrial and agricultural areas. Therefore, the search for new materials enabling the effective treatment of drinking water and sewage is currently of great interest. This paper deals with the adsorption of organic and inorganic pollutants on the surface of carbonaceous adsorbents prepared by thermochemical conversion of common pistachio nut shells. The influence of the direct physical activation with CO2 and chemical activation with H3PO4 on parameters, such as elemental composition, textural parameters, acidic&a...
Source: Molecules - June 1, 2023 Category: Chemistry Authors: Agata Wawrzyniak Ma łgorzata Wiśniewska Piotr Nowicki Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4494: Enhancing Cu2+ Ion Removal: An Innovative Approach Utilizing Modified Frankincense Gum Combined with Multiwalled Carbon Tubes and Iron Oxide Nanoparticles as Adsorbent
iddiqui Kondaiah Seku Aquatic pollution, which includes organic debris and heavy metals, is a severe issue for living things. Copper pollution is hazardous to people, and there is a need to develop effective methods for eliminating it from the environment. To address this issue, a novel adsorbent composed of frankincense-modified multi-walled carbon nanotubes (Fr-MMWCNTs) and Fe3O4 [Fr-MWCNT-Fe3O4] was created and subjected to characterization. Batch adsorption tests showed that Fr-MWCNT-Fe3O4 had a maximum adsorption capacity of 250 mg/g at 308 K and could efficiently remove Cu2+ ions over a pH range of 6 to 8. The ...
Source: Molecules - June 1, 2023 Category: Chemistry Authors: Mushtaq Hussain Syed Sulaiman Hussaini Mohammad Shariq Hanan Alzahrani Arafa A. Alholaisi Samar H. Alharbi Sirajah A. Alsharif Wafa Al-Gethami Syed Kashif Ali Abdel-Nasser M. A. Alaghaz Mohd Asim Siddiqui Kondaiah Seku Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4484: Change in Lipofectamine Carrier as a Tool to Fine-Tune Immunostimulation of Nucleic Acid Nanoparticles
l A. Afonin Nucleic acid nanoparticles (NANPs) require a carrier to allow for their intracellular delivery to immune cells. Cytokine production, specifically type I and III interferons, allows for reliable monitoring of the carrier effect on NANP immunostimulation. Recent studies have shown that changes in the delivery platform (e.g., lipid-based carriers vs. dendrimers) can alter NANPs’ immunorecognition and downstream cytokine production in various immune cell populations. Herein, we used flow cytometry and measured cytokine induction to show how compositional variations in commercially available lipofe...
Source: Molecules - June 1, 2023 Category: Chemistry Authors: Hannah S. Newton Yasmine Radwan Jie Xu Jeffrey D. Clogston Marina A. Dobrovolskaia Kirill A. Afonin Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4460: Group I Intron as a Potential Target for Antifungal Compounds: Development of a Trans-Splicing High-Throughput Screening Strategy
Paget The search for safe and efficient new antifungal compounds for agriculture has led to more efforts in finding new modes of action. This involves the discovery of new molecular targets, including coding and non-coding RNA. Rarely found in plants and animals but present in fungi, group I introns are of interest as their complex tertiary structure may allow selective targeting using small molecules. In this work, we demonstrate that group I introns present in phytopathogenic fungi have a self-splicing activity in vitro that can be adapted in a high-throughput screening to find new antifungal compounds. Ten candidat...
Source: Molecules - May 31, 2023 Category: Chemistry Authors: Bastien Malbert Virginie Labaurie C écile Dorme Eric Paget Tags: Article Source Type: research

Molecules, Vol. 28, Pages 4453: Gold Nanoparticles Functionalized with 2-Thiouracil for Antiproliferative and Photothermal Therapies in Breast Cancer Cells
dez Nanoparticles have been used to transport drugs to various body parts to treat cancer. Our interest is in gold nanoparticles (AuNPs) since they have the capacity to absorb light and convert it to heat, inducing cellular damage. This property is known as photothermal therapy (PTT) and has been studied in cancer treatment. In the present study, biocompatible citrate-reduced AuNPs were functionalized with a biologically active compound, 2-thiouracil (2-TU), of potential anticancer activity. Both the unfunctionalized (AuNPs) and functionalized (2-TU-AuNPs) were purified and characterized by UV–Vis absorpt...
Source: Molecules - May 31, 2023 Category: Chemistry Authors: G énesis Lorenzana-Vázquez Ioana Pavel Enrique Mel éndez Tags: Article Source Type: research