Article
Engineering, Environmental
Ke Luo, Ye-lin Yoon, Hyein Park, Soo-Jin Choi, Young-Rok Kim
Summary: TiO2 (E171) is commonly used as a coloring agent in processed food. Concerns about the potential health effects of TiO2 nanoparticles have led to the need for monitoring the size distribution and cytotoxic properties of TiO2 in commercial food. This study found that the extracted TiO2 from commercial foods had an average particle diameter of 121-143 nm, with a fraction of nanoscale particles ranging from 7.5% to 35.7%. Certain types of food, such as candy and jelly, were found to contain smaller TiO2 particles with a higher fraction of nanoscale particles. Additionally, the study investigated the effect of three organic acids on the physicochemical properties of TiO2, and found that citric acid reduced the size of TiO2 and generated fragmented nanoparticles. The study highlights the importance of fully assessing the potential long-term health effects of altered TiO2 in processed food.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Marius Stoian, Andrei Kuncser, Florentina Neatu, Mihaela Florea, Marcela Popa, Sorina N. Voicu, Mariana C. Chifiriuc, Anamaria Hanganu, Maria Elena Anghel, Madalina Tudose
Summary: This article presents the first efficient and environmentally friendly chemical reduction method for synthesizing aminated hyaluronic acid-based silver nanoparticles on the modified surface of titanium dioxide nanoparticles for biological applications. The study investigates the effect of nanoparticle size and chemical composition on the obtained materials and evaluates the antimicrobial, antioxidant, and anti-inflammatory activity of the fabricated composites.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Oladipupo Moyinoluwa David, Kim Leigh Lategan, Maria Fidalgo de Cortalezzi, Edmund John Pool
Summary: This study investigated the effects of various media on the properties of TiO2NPs and the effects of TiO2NP exposure on human cells. The results showed that TiO2NPs increased in size over time in different media, but the zeta potential remained stable. In addition, TiO2NPs induced cell stress biomarkers but had no effect on inflammatory biomarkers. Moreover, TiO(2)NPs displayed some anti-angiogenic properties at the no-observed-adverse-effect level and require further investigation.
Article
Nanoscience & Nanotechnology
Julien Vignard, Aurelie Pettes-Duler, Eric Gaultier, Christel Cartier, Laurent Weingarten, Antje Biesemeier, Tatjana Taubitz, Philippe Pinton, Cecilia Bebeacua, Laurent Devoille, Jacques Dupuy, Elisa Boutet-Robinet, Nicolas Feltin, Isabelle P. Oswald, Fabrice H. Pierre, Bruno Lamas, Gladys Mirey, Eric Houdeau
Summary: The food additive titanium dioxide (TiO2) may have potential toxicity on buccal mucosa and can enter the systemic circulation. Research conducted on pig buccal mucosa and human buccal cells shows that food-grade TiO2 particles can be absorbed through the oral route and cause cytotoxicity and genotoxicity in cells. This study highlights the importance of considering buccal exposure in toxicokinetic studies and risk assessment of TiO2 used as a food additive.
Article
Chemistry, Physical
Alejandra Romero-Moran, Jose L. Sanchez-Salas, Joel Molina-Reyes
Summary: The study established the influence of the crystalline phase and agglomeration degree of TiO2 nanoparticles on photocatalytic hydroxyl radical formation and bacterial inactivation in TiO2/SiO2 composite coatings. A relationship between hydroxyl radicals' formation and charge carrier transfer mechanism between defect levels in SiO2 and TiO2 embedded nanoparticles was established through a simple spectroscopic method. This correlation complements the lack of mechanisms behind the photocatalytic activity in TiO2/SiO2 composites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
Jiang Bing, Xu Xiao, David Julian McClements, Yuan Biao, Cao Chongjiang
Summary: The study found interactions between four plant proteins and titanium dioxide nanoparticles, leading to the formation of protein coronas of varying thicknesses and changes in the surface potentials of the nanoparticles, affecting the secondary structures of the plant proteins.
FOOD HYDROCOLLOIDS
(2021)
Article
Chemistry, Multidisciplinary
Ionela Cristina Nica, Bogdan Andrei Miu, Miruna S. Stan, Lucian Diamandescu, Anca Dinischiotu
Summary: Researchers found that co-doped TiO2 NPs with enhanced photocatalytic activity in the visible light spectrum showed less oxidative stress and lower formation of autophagic vacuoles in human lung cells compared to pure TiO2 NPs.
Article
Biochemistry & Molecular Biology
Fabiola Sciscione, Simon Guillaume, Abil E. Aliev, Declan T. Cook, Hugo Bronstein, Helen C. Hailes, Paul C. Beard, Tammy L. Kalber, Olumide Ogunlade, Alethea B. Tabor
Summary: Semiconducting polymer nanoparticles (SPN) have potential as exogenous contrast agents for photoacoustic imaging (PAI), but require active targeting strategies and effective characterization techniques. This study developed EGFR-targeted SPN using peptide conjugation and a new NMR method. Preliminary experiments indicated ineffective delivery or destabilization of the formulation.
BIOORGANIC & MEDICINAL CHEMISTRY
(2023)
Article
Agriculture, Dairy & Animal Science
Salim Albukhaty, L. Al-Bayati, H. Al-Karagoly, S. Al-Musawi
Summary: A novel method for synthesizing stable titanium dioxide nanoparticles (TiO2 NPs) using a sol-gel process was developed and their cytotoxicity and antibacterial activity were investigated. The prepared TiO2 NPs were characterized by various techniques to confirm their morphologies, compositions, and physicochemical properties. The results showed that the synthesized nanoparticles had a diameter of approximately 68 nm and exhibited anatase phase. The nanoparticles also demonstrated high stability, with a hydrodynamic radius of about 140.4 nm and a zeta potential of -44.6 mV. MTT assay revealed no cytotoxicity, and the TiO2 NPs exhibited superior antibacterial activity against Staphylococcus aureus and Escherichia coli at a concentration of 200 mg/mL. In conclusion, the synthesized TiO2 NPs showed promising properties for biomedical applications, including decreased size and increased antibacterial activity.
ANIMAL BIOTECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Wahyudiono, Hiroki Kondo, Siti Machmudah, Hideki Kanda, Yaping Zhao, Motonobu Goto
Summary: The study demonstrated the utilization of an electric field generated by high voltage discharge plasma over a liquid water surface containing glycine compound to synthesize TiO2 nanoparticles. The applied voltages, pulse numbers, and repetition rates significantly influenced the decomposition reaction of glycine compounds and electrode erosion. The UV-vis spectra and HRTEM images confirmed the formation of TiO2 nanoparticles and TiC as nanoparticle products, suggesting that this process has potential for advanced nanoparticle synthesis technology.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Pamela Zuniga Fallas, Jaime Quesada Kimzey, Prabhas Hundi, Md Tariqul Islam, Juan C. Noveron, Pedro J. J. Alvarez, Rouzbeh Shahsavari
Summary: This study introduces a novel combinatorial data science approach to investigate the influence of various photocatalytic cement composites based on limited datasets. Results suggest that cement composition has a greater impact on photocatalytic activity than cement microstructure, TiO2 type, and particle size.
Article
Chemistry, Physical
Paulo Siani, Giulia Frigerio, Edoardo Donadoni, Cristiana Di Valentin
Summary: Atomistic molecular dynamics simulations were used to investigate the structural and functional parameters of high-affinity cRGD-containing peptides. The study revealed the impact of cRGD density on ligand presentation, stability, and conformation. It was found that moderate density favored optimal spatial presentation of the ligands, while high densities led to over-clustering.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Polymer Science
M. G. Pena-Juarez, L. O. Sanchez-Vargas, L. A. Flores-Gonzalez, A. Almendarez-Camarillo, E. J. Gutierrez-Castaneda, J. Navarrete-Damian, E. Perez, J. A. Gonzalez-Calderon
Summary: This study evaluated the mechanical, antibacterial, and non-cytotoxic performance of isotactic polypropylene nanocomposites filled with silanized TiO2-Ag nanoparticles. The research found that the nanocomposites prepared using the one-step method with dietary supplement quercetin had the highest antibacterial activity and showed improved mechanical properties. Additionally, the nanocomposites were non-toxic to cells, suggesting potential industrial and commercial applications.
Article
Environmental Sciences
Amal Halawa, Gehad Elshopakey, Mohamed El-Adl, Samah Lashen, Nancy Shalaby, Ehab Eldomany, Ahmed Farghali, Shaymaa Rezk
Summary: The study demonstrated that titanium dioxide nanoparticles induce neurotoxicity by affecting various neuronal biomarkers, leading to neuronal damage and apoptosis. While chitosan shows neuroprotective effects, its inhibitory effect on Arc expression should be taken into consideration.
ENVIRONMENTAL TOXICOLOGY
(2022)
Article
Toxicology
Joo-Hee Park, Dong Ju Kim, Choul Yong Park
Summary: The retina is essential for human vision, and nanoparticles are a potential platform for ocular drug delivery. However, the toxicity of nanoparticles in retinal tissue has not been well-studied. This study found that two commonly used types of nanoparticles, silica nanoparticles and titanium dioxide nanoparticles, had significant dose-dependent toxicity on retinal precursor cells. Increased reactive oxygen species generation, autophagy, and decreased mTOR phosphorylation were observed. Diffuse apoptosis of retinal cellular layers was also detected in rat models.
TOXICOLOGY RESEARCH
(2022)
Article
Environmental Sciences
Muqiu Hu, Xin Zhao, Jinghan Gu, Lulu Qian, Zhiqing Wang, Yuanyuan Nie, Xiaoyu Han, Long An, Haiqiang Jiang
Summary: Due to its simple process, environmental friendliness, and low operating costs, biometallurgy has become a popular technology for metals recovering from low-grade ores and tailings. An optimized agar was used to isolate and grow functional bacteria, resulting in the successful isolation of six functional stains. These strains were further tested for their ability to leach metals from polymetallic sulfide tailings, with significant improvements observed when the strains were mixed together. The selection of leaching process should be based on tailings composition and target metals.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Saqib Hassan, Aswin Thacharodi, Anshu Priya, R. Meenatchi, Thanushree A. Hegde, R. Thangamani, Ht Nguyen, Arivalagan Pugazhendhi
Summary: An Endocrine Disrupting Chemical (EDC) is a compound that disrupts the function of the endocrine system and is found in the environment. EDCs, such as Bisphenol A and pesticides, have been shown to have negative effects on the female reproductive system. Understanding the relationship between EDCs and women's health is crucial for developing strategies to protect reproductive health and informing public policy decisions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Lichang Zhou, Zhaoling Li, Boyi Cheng, Jinqi Jiang, Xinqi Bi, Zongping Wang, Guanghao Chen, Gang Guo
Summary: Thiosulfate can promote sulfur-mediated bacterial activity, inhibit glycogen accumulating organisms, and enhance denitrification efficiency. After the carbon source is reduced, the competitive ability of glycogen accumulating organisms increases, resulting in reduced sulfate reduction.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Claire E. Campbell, Devyn L. Cotter, Katherine L. Bottenhorn, Elisabeth Burnor, Hedyeh Ahmadi, W. James Gauderman, Carlos Cardenas-Iniguez, Daniel Hackman, Rob McConnell, Kiros Berhane, Joel Schwartz, Jiu-Chiuan Chen, Megan M. Herting
Summary: Recent studies have found a connection between air pollution and increased risk for behavioral problems during development. However, more longitudinal studies are needed to investigate how exposure during the transition to adolescence may affect emotional behaviors.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Jing-hong Liang, Ru-yu Yang, Mei-ling Liu, Ying-qi Pu, Wen-wen Bao, Yu Zhao, Li-xin Hu, Yu-shan Zhang, Shan Huang, Nan Jiang, Xue-ya Pu, Shao-yi Huang, Guang-hui Dong, Ya-jun Chen
Summary: This study examines the association between urban Green and blue spaces (GBS) exposure and Emotion and behavior problems (EBP) in youth populations. The findings suggest that higher exposure to GBS, particularly green spaces (GS) and blue spaces (BS), is associated with a decrease in the risk of developing total difficulties in young individuals. The joint effect of GS and BS may also contribute to the decrease in EBPs.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Diego Ruiz-Sobremazas, Mario Ruiz Coca, Miguel Morales-Navas, Rocio Rodulfo-Cardenas, Caridad Lopez-Granero, Maria Teresa Colomina, Cristian Perez-Fernandez, Fernando Sanchez-Santed
Summary: Air pollution is associated with a range of health issues and gestational exposure to environmental pollutants may be linked to neurodevelopmental disorders. This study investigated the effects of oral gestational exposure to particulate matter (PM) on ultrasonic vocalizations (USV). The findings suggest that this exposure may lead to social deficits and abnormal gene expression related to neurotransmitter systems. Further research is needed to better understand the effects of air pollution on neurodevelopmental disorders and the neurotransmission systems involved.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yagmur Kabakci, Sadiye Kosar, Ozgur Dogan, Fehmi Gorkem Uctug, Osman Atilla Arikan
Summary: This study investigated the effect of electrohydrolysis pretreatment on municipal solid waste. The results showed that applying electrohydrolysis pretreatment increased methane production and reduced the time required for hydrolysis, suggesting it is a promising method to improve anaerobic digestion efficiency.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Chuanwu Zhao, Yaozhong Pan, Hanyi Wu, Yu Zhu
Summary: This study analyzed the impact of industrial zones on urban heat islands using remote sensing images and a novel spectral index. The research found that the contraction or expansion of industrial zones has a significant effect on land surface temperature. The results are valuable for environmental assessment and fine management of industrial cities.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Bang Du, Zhongzhong Wang, Piet N. L. Lens, Xinmin Zhan, Guangxue Wu
Summary: This study investigated the performance, syntrophic relationships, microbial communities, and metabolic pathways of ethanol-fed reactors with different operational modes and solids retention times. The results showed that different microorganisms were enriched under different SRT conditions, and syntrophic bacteria related to methane production could be enriched under low SRT conditions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Gokulan Ravindiran, Sivarethinamohan Rajamanickam, Muralikrishnan Ramalingam, Gasim Hayder, Balamurugan Karupaiya Sathaiah, Madhava Krishna Reddy Gaddam, Senthil Kumar Muniasamy, Priya Arunkumar
Summary: The present study investigated the sustainable approach for wastewater treatment using waste algal blooms. The biochar produced by the marine algae Ulva reticulata was used to remove chromium, nickel, and zinc from aqueous solutions. The study examined the adsorbents' properties and stability using SEM/EDX, FTIR, and XRD. The results showed that the biochar had high removal efficiency for the toxic metals, and the packed bed column effectively removed the heavy metal ions. The Thomas and Adams-Bohart models were found to best fit the regression values, and desorption studies were conducted to understand the sorption and elution processes.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Vignesh Vinayagam, Kavitha Nagarasampatti Palani, Sudha Ganesh, Siddharth Rajesh, Vedha Varshini Akula, Ramapriyan Avoodaiappan, Omkar Singh Kushwaha, Arivalagan Pugazhendhi
Summary: The presence of pollutants in water contributes to global pollution and poses significant threats to humans and wildlife. Finding effective wastewater treatment techniques is crucial for reducing pollutant accumulation in the environment. This paper highlights recent advances in the electrochemical advanced oxidation method and other processes for treating pharmaceuticals, dyes, and pesticide-polluted effluents.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
M. M. M. Ahmed, Kai-Yue Chen, Fang-Yu Tsao, Yi-Cheng Hsieh, Yu-Ting Liu, Min Tzou
Summary: This study investigated the sorption of citric acid onto humic acid-iron hydr(o)xide coprecipitate (HAFHCP) and the reciprocal effects of citric acid and P sorption on HAFHCP. The results showed that citric acid could increase P availability and have an impact on P sorption.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Xibo Xu, Zeqiang Wang, Xiaoning Song, Wenjie Zhan, Shuting Yang
Summary: The selection of predictor variables is crucial in building a digital mapping model for potentially toxic elements (PTEs) in soil. Traditionally, spatial and spectral parameters have been used as predictor variables, but the temporal dimension is often overlooked. This study demonstrates the value of incorporating temporal indices in the model, leading to significant performance improvements. The temporal-spatial-spectral covariate combinations used in a random forest (RF) algorithm achieve satisfactory mapping accuracy and outperform other methods.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yan Pei, Xun Liu, Mengbo Cao, Zijun Wang, Hongbing Yang
Summary: Heteroatom doping can reconfigure the electronic structure of heterogeneous catalysts, leading to the development of advanced oxidation water purification materials with superior performance and stability. In this study, a series of catalysts with different elemental doping were prepared using a simple and environmentally friendly method. The S-doped NiCo2O4 catalyst showed excellent catalytic performance for the removal of Tetracycline, with significantly increased kinetic constant and high oxidation and mineralization efficiency in a wide pH range. The degradation process was dominated by non-radical oxidation pathway after S doping, and the overall process moved towards low toxicity.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Srivalli Thimmarayan, Harshavardhan Mohan, Gaddapara Manasa, Karthi Natesan, Shanmugam Mahendran, Pavithra Muthukumar Sathya, Byung-Taek Oh, R. Ravi Kumar, Rangasamy Sigamani Gandhimathi, Arul Jayaprakash, Kamala-Kannan Seralathan
Summary: This study investigated the bacterial degradation of naphthalene (NPT) isolated from crude oil-contaminated soil. Bacillus sp. GN 3.4, a potential bacteria for NPT biodegradation, was isolated and the optimal conditions for NPT degradation were determined. The study suggests that Bacillus sp. GN 3.4 could potentially aid in bioremediation by eliminating NPT from the soil.
ENVIRONMENTAL RESEARCH
(2024)