Article
Environmental Sciences
Rima Nour Elhouda Tiri, Fulya Gulbagca, Aysenur Aygun, Ali Cherif, Fatih Sen
Summary: This study synthesized Ag-Pt bimetallic nanoparticles using an aqueous propolis extract and evaluated their antibacterial activity and catalytic activity in NaBH4 hydrolysis. The results showed that the nanoparticles exhibited significant antimicrobial activity against various bacteria and high hydrogen yield in the hydrolysis reaction.
ENVIRONMENTAL RESEARCH
(2022)
Article
Infectious Diseases
Jawaher J. Albaqami, Hamida Hamdi, Arunaksharan Narayanankutty, Naduvilthara U. Visakh, Anju Sasidharan, Aswathi Moothakoottil Kuttithodi, Ademola C. Famurewa, Berin Pathrose
Summary: This study extracted essential oils from the leaves of Curcuma species and evaluated their chemical composition, antioxidant properties, and antibacterial activity. The results showed that the essential oils from Curcuma exhibited high antioxidant and antibacterial activities, and demonstrated cytotoxicity against breast cancer cell lines.
Article
Pharmacology & Pharmacy
Shabnam Yavari, Kayode Olaifa, Darya Shafiee, Reza Rasuli, Mehdi Shafiee
Summary: Microorganisms are emerging contaminants in the environment and pose significant risks to public health. Conventional disinfection methods are often ineffective and have drawbacks. This study presents a method to synthesize nanomaterials with antimicrobial properties and demonstrates their effectiveness against Escherichia coli and Candida albicans. The synthesized nanomaterials show potential for biomedical applications.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Materials Science, Multidisciplinary
Jia-Jun Qiu, Ting-Ting Yang, Yi-Fan Li, Wen-Hao Qian, Xuan-Yong Liu
Summary: Au@Ag@Pt core-shell nanorods with noble metal combination were fabricated and assembled on medical titanium surface to investigate their antibacterial activity and biocompatibility. The Pt shell layer on Ti-Au@Ag@Pt was found to slow down the Ag ion release rate, which endowed the medical titanium surface with both antibacterial activity and good biocompatibility without obvious cell toxicity. The antibacterial rates of Ti-Au@Ag@Pt against S. epidermidis and P. aeruginosa were 89.7% and 92.7%, respectively.
Article
Biochemistry & Molecular Biology
Hai Thanh Nguyen, Siyuan Wu, Tomoki Ootawa, Hieu Chi Nguyen, Hong Thi Tran, Pitchaya Pothinuch, Hang Thi Thu Pham, Anh Thi Hong Do, Hao Thanh Hoang, Md. Zahorul Islam, Atsushi Miyamoto, Ha Thi Thanh Nguyen
Summary: Heat treatment can alter the therapeutic effects of turmeric. Dark-roasted turmeric has weaker antibacterial properties and reduced curcumin contents, total polyphenol values, and antioxidant activities. Non-roasting or light-roasting is more suitable for processing turmeric materials for bacterial infections.
Article
Environmental Sciences
Fuad Ameen, Hassan Karimi-Maleh, Rozhin Darabi, Merve Akin, Ali Ayati, Selma Ayyildiz, Muhammed Bekmezci, Ramazan Bayat, Fatih Sen
Summary: Activated carbon supported palladium cobalt bimetallic nanoparticles (PdCo@AC NPs) were synthesized using Cinnamomum verum extract. The nanoparticles were characterized and found to have a particle size of 2.467 nm. Their potential application as dopamine sensors was evaluated, achieving a Limit of Detection (LOD) and a Limit of Quantitation (LOQ) of 5.68 pM and 17.21 pM, respectively. The nanoparticles also exhibited good antibacterial properties against both gram positive (Staphylococcus aureus) and gram negative (Escherichia coli) bacteria. This study demonstrates the successful biogenic synthesis of AC supported PdCo bimetallic NPs and their potential in antibacterial and dopamine sensing applications.
ENVIRONMENTAL RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Murugesan Sindhu, Vallavan Rajkumar, Coimbatore Alagubrahmam Annapoorani, Chinnappan Gunasekaran, Malaichamy Kannan
Summary: This study developed CLEO-CSNPs by encapsulating Curcuma longa essential oil in chitosan nanopolymer. The encapsulated CLEO exhibited enhanced antibacterial, antifungal, and mycotoxin inhibitory efficacy. In vitro experiments demonstrated significant antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa, as well as complete inhibition of F. graminearum growth and mycotoxin production. Additionally, the encapsulated CLEO showed improved antioxidant activity and no phytotoxicity effects on germinating seeds.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Munirah F. Aldayel
Summary: Incorporating zinc oxide nanoparticles into Curcumin longa cultivation can improve the growth and alter the bioactive component compositions of the plant. This study investigates the effects of foliar application of ZnO NPs on the content of bioactive compounds and their antibacterial activities. Results show that spraying with (5 and 40 mg/L) of ZnO NPs increases the levels of bioactive compounds in C. longa approximately (2.69 and 3.45)-fold. Moreover, the ethanolic extracts from the plantlets exhibit antibacterial activity against S. aureus and P. aeruginosa.
Article
Chemistry, Multidisciplinary
Xueqing Wang, Ming Li, Pengcheng Xu, Ying Chen, Haitao Yu, Xinxin Li
Summary: Bimetallic Pd-Ag alloy nanoparticles have been found to enhance the performance of H-2 sensors. However, the long-term stability of the sensors with Pd-Ag nanoparticles as catalysts decreases significantly during operation. In this study, gas-cell in situ transmission electron microscopy (TEM) was used to investigate the failure mechanisms of Pd-Ag nanoparticles under operation conditions. Based on the results, two failure mechanisms were identified, and the H-2 sensor was comprehensively optimized to improve stability. The optimized sensor exhibited satisfactory H-2-sensing properties and negligible response decline after 1 month.
Article
Biochemistry & Molecular Biology
Maria Isabel Quiros-Fallas, Felipe Vargas-Huertas, Silvia Quesada-Mora, Gabriela Azofeifa-Cordero, Krissia Wilhelm-Romero, Felipe Vasquez-Castro, Diego Alvarado-Corella, Andres Sanchez-Kopper, Mirtha Navarro-Hoyos
Summary: Curcuma longa rhizomes produced in Costa Rica contain a variety of polyphenols, including curcumin, demethoxycurcumin, and bisdemethoxycurcumin, which have been found to possess important biological activities such as anti-inflammatory, antioxidant, anticancer, antimicrobial, antihypertensive, and anticoagulant effects. The study also demonstrates that the content of curcuminoids and antioxidant activity vary among different samples from different regions of Costa Rica.
Article
Biochemistry & Molecular Biology
Yu-Qin Guo, Guang-Xu Wu, Cheng Peng, Yun-Qiu Fan, Lei Li, Fei Liu, Liang Xiong
Summary: This study isolated 10 bisabolane-type sesquiterpenoids from Curcuma longa L., including two pairs of new epimers. One of the compounds significantly inhibited the production of inflammatory mediators and showed inhibitory activity against macrophage-derived foam cell formation. These findings suggest that bisabolane-type sesquiterpenoids have the potential to alleviate the atherosclerosis process by preventing inflammation and inhibiting macrophage foaming.
Article
Chemistry, Applied
Tamara S. Kharlamova, Margarita V. Salina, Valery A. Svetlichnyi, Mikhail A. Salaev, Andrey I. Stadnichenko, Grigory V. Mamontov
Summary: This study focuses on the design of ceria-supported Pt-Ag bimetallic catalysts for the reduction of 4-nitrophenol. The addition of silver to platinum and the conditions used for bimetallic catalyst treatment can enhance catalyst activity. The optimal Pt:Ag ratio depends on the sample pretreatment and can impact the catalyst's activity.
Article
Food Science & Technology
Grazielle Oliveira, Caroline Marques, Anielle de Oliveira, Amanda de Almeida dos Santos, Wanderlei do Amaral, Rafael Porto Ineu, Fernanda Vitoria Leimann, Ana Paula Peron, Luciana Igarashi-Mafra, Marcos R. Mafra
Summary: This study utilized ultrasound-assisted extraction to extract bioactive compounds from different parts of Curcuma longa L., and conducted multiple analyses on the extracts. The extracts showed antibacterial and iron chelation activities, with DES-based extracts exhibiting high enzyme inhibition rates.
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
(2021)
Article
Chemistry, Physical
Yejin Song, Daeho Kim, Seunghwa Hong, Taek-Seung Kim, Ki-Jeong Kim, Jeong Young Park
Summary: The formation and impact of the Pt-CoO interface on Pt-Co bimetallic NPs were investigated, revealing that the interfacial structures play a key role in enhancing catalytic activity.
Article
Biochemistry & Molecular Biology
Chih-Hao Chang, Li-Hui Tsai, Yi-Chen Lee, Wei-Cheng Yao, Jiang-Jen Lin
Summary: In this study, a hybrid of AgNP/ZnONP/NSP was prepared by co-synthesizing zinc oxide nanoparticles and silver nanoparticles on a nano-silicate platelet. AgNP/ZnONP/NSP showed higher efficacy against Staphylococcus aureus compared to ZnONP/NSP and AgNP/NSP. In cell culture tests, 1/10/99 (weight ratio) of AgNP/ZnONP/NSP exhibited low cytotoxicity for mammalian cells.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Yingji Wu, Rima Nour Elhouda Tiri, Muhammed Bekmezci, Elif Esra Altuner, Aysenur Aygun, Changtong Mei, Yan Yuan, Changlei Xia, Elena-Niculina Dragoi, Fatih Sen
Summary: A novel activated carbon supported trimetallic Pt-Ru-Ni nanoparticles were synthesized and demonstrated to be an efficient catalyst for hydrogen production and enhanced photodegradation of methylene blue dye. The nanoparticles were characterized using various techniques, and the results showed high photocatalytic degradation of the dye and good catalytic activity for hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Editorial Material
Chemistry, Multidisciplinary
Hassan Karimi-Maleh, Elena Niculina Dragoi, Eric Lichtfouse
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Environmental Sciences
Rosan Zokhtareh, Mostafa Rahimnejad, Ghasem Najafpour-Darzi, Hassan Karimi-Maleh
Summary: The development of efficient antibiotic monitoring systems to reduce the environmental risks of antibiotic resistant genes is crucial. In this study, an electrochemical sensor was fabricated using green synthesis of Fe3O4 nanoparticles with the help of Sambucus ebulus L. leaves alcoholic plant extract. The sensor showed excellent catalytic activity and was successfully used for the electrochemical detection of metronidazole in real aqueous samples.
ENVIRONMENTAL RESEARCH
(2023)
Review
Environmental Sciences
M. Gokhan Gunay, Ubade Kemerli, Ceren Karaman, Onur Karaman, Afsin Gungor, Hassan Karimi-Maleh
Summary: It is crucial to develop energy-efficient and faster methods for water treatment and desalination due to the increasing water demand and the drying out or contamination of water sources. This study reviews nano-porous structures with functional groups for desalination and water treatment and finds that a well-designed membrane should have small pore size to reject contaminants while allowing high water permeation. The addition of functional groups to membranes affects permeability and rejection rate, with hydrophilic groups increasing permeability and hydrophobic ones decreasing it.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Ramazan Bayat, Hakan Burhan, Muhammed Bekmezci, Elif Sahin Isgin, Merve Akin, Fatih Sen
Summary: In this study, a PtRu catalyst supported by carbon nanofibers (CNF) was developed and investigated for the electrochemical oxidation of methanol and ethanol. The synthesized PtRu@CNF nanoparticles exhibited good diffusion efficiency, oxidation potential, and forward peak current density. The forward peak current densities for ethanol and methanol oxidation were measured to be 29.17 mA/cm2 and 48.14 mA/cm2, respectively. These PtRu@CNF nanoparticles possess high conductivity, low onset potential, and high electrochemical surface area, making them suitable catalysts for direct alcohol fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Reza Mostafazadeh, Hassan Karimi-Maleh, Ali Ghaffarinejad, Fariba Tajabadi, Yasamin Hamidian
Summary: In this study, the electrochemical behavior of Azithromycin (Azi) antibiotic was investigated using a carbon paste electrode (CPE) improved by graphene nanoribbon-CoFe2O4@NiO nanocomposite and 1-hexyl-3 methylimidazolium hexafluorophosphate (HMIM PF6) as an ionic liquid binder. The results showed that the modifiers enhanced the conductivity and electrochemical activity of the CPE. Under optimal conditions, the sensor exhibited linear ranges from 10 μM to 2 mM with a LOD of 0.66 μM for Azi determination. The reproducibility (3.15%), repeatability (2.5%), selectivity, and stability (for 30 days) of the sensor were also confirmed.
APPLIED NANOSCIENCE
(2023)
Review
Nanoscience & Nanotechnology
Hassan Karimi-Maleh, Yasin Orooji, Fatemeh Karimi, Ceren Karaman, Yasser Vasseghian, Elena Niculina Dragoi, Onur Karaman
Summary: Current energy demand and environmental pollution issues are growing due to global urbanization and development, which leads to increased energy/material consumption, irreversible damage to the ecosystem, and waste formation. Generating hydrogen from renewable biomass/waste is a promising solution to reduce carbon emissions and contribute to a low-carbon bioeconomy. Nanostructured systems based on renewable biomass/waste sources have the potential to produce sustainable and low carbon biohydrogen due to their unique physicochemical properties.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Environmental Sciences
Zhouxiang Zhang, Hassan Karimi-Maleh
Summary: Researchers developed a novel electrochemical aptasensor based on AuNPs/PPy/Ti3C2Tx nanocomposites for sensitive and selective detection of Pb2+ in environmental fluids. The nanocomposites exhibited excellent stability and electrochemical performance, and the sensor demonstrated a wide linear range and low limit of detection. It successfully detected Pb2+ in environmental fluids such as NongFu Spring and tap water.
Article
Engineering, Environmental
Ramazan Bayat, Merve Akin, Bahar Yilmaz, Muhammed Bekmezci, Mevlut Bayrakci, Fatih Sen
Summary: Biogenic platinum nanoparticles (Pt NPs) were synthesized using a green synthesis method. The Pt NPs and plant extract were characterized using XRD, TEM, and FTIR. The cytotoxic and antibacterial effects of the Pt NPs were investigated on various cell lines and bacterial strains, and the Pt NPs were also studied for their potential use in alternative clean energy production, showing promising results in alcohol oxidation.
CHEMICAL ENGINEERING JOURNAL ADVANCES
(2023)
Review
Environmental Sciences
Tao Wu, Hassan Karimi-Maleh, Elena Niculina Dragoi, Paridhi Puri, Dongxing Zhang, Zhouxiang Zhang
Summary: In recent years, pollution caused by disinfection by-products (DBPs) has become a global concern due to the rapid industrialization and the increased use of chlorinated disinfectants during the outbreak of COVID-19. This review comprehensively discusses the pretreatment methods and detection technologies for traditional and emerging DBPs, including the principles, applicability, and characteristics of large-scale instrumentation methods and the design, functionality, classification, and characteristics of rapid detection technologies like biosensors.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Zhouxiang Zhang, Hassan Karimi-Maleh, Yangpin Wen, Rozhin Darabi, Tao Wu, Pardis Alostani, Masoumeh Ghalkhani
Summary: In this study, an electrochemical aptamer sensor based on an antimonene@Ti3C2Tx nanohybrid was proposed for the sensitive determination of Pb2+. The nanohybrid, synthesized by ultrasonication, combined the advantages of both antimonene and Ti3C2Tx, leading to an enhanced sensing signal and simplified manufacturing flow. The surface morphology and microarchitecture of the nanohybrid were characterized using various techniques. The aptasensor exhibited a wide linear correlation with Log CPb2+ and a trace detection limit of 3.3 x 10-13 M. Additionally, the aptasensor showed excellent repeatability, consistency, selectivity, and reproducibility, suggesting its potential application in water quality control and environmental monitoring of Pb2+.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Muhammed Bekmezci, Ramazan Bayat, Merve Akin, Zeynep Kazel Coguplugil, Fatih Sen
Summary: In this article, a simple and label-free electrochemical miRNA biosensor was developed, which could detect miR-141 sensitively and selectively without tags. The hybridization between single-stranded DNA probes and target miR-141 sequence was successfully accomplished, and significant peaks were observed at different concentrations of miR-141. The detection limit of miR-141 was found to be 3 pM, and the biosensor showed a significant difference in peak currents between miR-141 and other target molecules. The integration of this strategy into mobile devices has also been successfully carried out.
Review
Chemistry, Analytical
Li Fu, Cheng-Te Lin, Hassan Karimi-Maleh, Fei Chen, Shichao Zhao
Summary: This review summarizes recent advances in leveraging localized surface plasmon resonance (LSPR) nanotechnology for sensitive cancer biomarker detection. Various optical techniques, including surface-enhanced Raman spectroscopy (SERS), dark-field microscopy (DFM), photothermal imaging, and photoacoustic imaging, have been enhanced by LSPR arising from noble metal nanoparticles. Nanoparticle engineering strategies and integration with microfluidics and point-of-care devices are discussed. Remaining challenges, such as toxicity, standardization, and clinical sample analysis, are examined.
Article
Energy & Fuels
Merve Akin, Muhammed Bekmezci, Ramazan Bayat, Iskender Isik, Fatih Sen
Summary: The production of structures from covalent organic frameworks, particularly graphene aerogel (GA), is of great importance in utilizing porous structures effectively. In this study, GA was synthesized using ascorbic acid as a green reducing agent and exhibited a 3D stacked ultralight and highly porous structure. The modified GA with PtFe3O4 showed enhanced electrocatalytic activity and long-term stability in methanol oxidation studies. The introduction of GA increased electrical conductivity and surface area, demonstrating its high potential in methanol oxidation research.
