Article
Materials Science, Multidisciplinary
Hongwei Xuan, Xiping Chen, Na Li, Weidong Zhao
Summary: In this paper, the co-precipitation method was used to prepare NaMgF3 and MgF2 using the leaching solution of SPL and magnesium sulfate as raw materials. The molar ratio of magnesium ion to fluorion (M/F) was found to be the decisive factor for the type of product. NaMgF3 was mainly produced when M/F < 0.33, while MgF2 gradually formed when M/F increased to 0.33-0.81, and the product became a mixture of NaMgF3 and MgF2. When M/F exceeded 0.81, MgF2 was the main product.
Article
Engineering, Environmental
Juan Carlos Burillo, Lourdes Ballinas, Guillermina Burillo, Ernesto Guerrero-Lestarjette, Daniel Lardizabal-Gutierrez, Humberto Silva-Hidalgo
Summary: This study fully characterized groundwater samples from Chihuahua City, northern Mexico, revealing natural contamination with arsenic, fluoride, and uranium. A batch equilibrium sorption procedure was implemented using chitosan hydrogels, showing high adsorption capacity for arsenic and fluoride ions. Kinetics sorption tests and adsorption isotherm studies indicated heterogeneous sorption and physisorption as the mechanism of retention for arsenic and fluoride ions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Miguel A. Casillas-Santana, Yael N. Slavin, Peng Zhang, Nereyda Nino-Martinez, Horacio Bach, Gabriel A. Martinez-Castanon
Summary: This study evaluates the osteoregenerative capacity of bone grafting materials in animals with induced bone defects. Colloidal chitosan dispersion nanocomposites, nanohydroxyapatite-chitosan (NHAP-Q) and nanosilver-chitosan (AgNP-Q), showed good biocompatibility and bone regeneration capability. The main research outcome of this study is the combination of two types of NPs to enhance antimicrobial and osteoregeneration activities.
Article
Pharmacology & Pharmacy
Dien Puji Rahayu, Roger Draheim, Aikaterini Lalatsa, Marta Roldo
Summary: Dental caries is a worldwide endemic chronic disease, and there is a need for new, effective, safe, and affordable oral products. A polymer (CS3H Lys F) has been found to have strong antibacterial properties and the ability to protect teeth from acid demineralization, making it a potential candidate for oral hygiene products.
Article
Biochemistry & Molecular Biology
Liping Mei, Jiao Wei, Ruirui Yang, Fei Ke, Chuanyi Peng, Ruyan Hou, Junsheng Liu, Xiaochun Wan, Huimei Cai
Summary: A novel and easily separable adsorbent in the shape of a membrane has been prepared to rapidly remove fluoride from water. The CS/PVA-La-Zr composite adsorbent can remove a large amount of fluoride within 1 min and reach adsorption equilibrium within 15 mins. The adsorption mechanism involves ion exchange with hydroxide and fluoride ions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Review
Pharmacology & Pharmacy
Jiaqi Weng, Alain Durand, Stephane Desobry
Summary: This article reviews the state of the art in using chitosan (CS) for preparing particulate carriers for drug delivery applications. It discusses the relationship between targeted controlled activity, preparation process, and release kinetics, focusing on matrix particles and capsules. The article emphasizes the relationship between the size/structure of CS-based particles and drug release kinetics, and reviews various techniques for characterizing particle properties. Mathematical models play a crucial role in understanding release mechanisms and identifying key structural characteristics, leading to the development of a novel design strategy for drug delivery devices.
Article
Mathematics, Applied
Pawan Kumar, Dezso Horvath, Agota Toth
Summary: This study investigates the dynamics of in situ prepared ethanol-containing chitosan gels in continuous and intermittent motion. The active life of the organic material follows a linear scaling with constant fuel level, and its velocity and projection area decrease with chitosan concentration.
Article
Engineering, Environmental
Zehao Li, Xinling Wang, Xiaoli Zhang, Yuxin Yang, Jinyou Duan
Summary: This study investigated the adsorption of cefotaxime (CTX) in water by chitosan particles and films, revealing that the film had a stronger adsorption capacity and was an efficient and reusable adsorbent for antibiotics elimination in water. Various experimental conditions and analysis factors influenced the CTX removal, with the mechanism of adsorption mainly based on plane strengthening effect, electrostatic attraction, nucleophilic addition reaction, and hydrogen bonding.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
A. Dzieniszewska, J. Nowicki, G. Rzepa, J. Kyziol-Komosinska, I. Semeniuk, D. Kie Lkiewicz, J. Czupio
Summary: This study prepared novel biosorbents based on chitosan and imidazolium ionic liquid for the removal of fluoride from aqueous solutions. Experimental results showed that the introduction of ionic liquid significantly improved the adsorption performance of fluoride, and the adsorption was influenced by the experimental conditions and the method of ionic liquid synthesis.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Microbiology
Chun-Cheng Lai, Chun-Pin Lin, Yin-Lin Wang
Summary: This study developed a fissure sealant containing chitosan/fluoride microparticles. The results showed that 2% chitosan/fluoride microparticles had good antibacterial ability and mechanical properties, as well as good fluoride release and recharge ability.
JOURNAL OF ORAL MICROBIOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Meline Gurtat Porcel, Bruna Tais Ferreira de Mello, Helton Jose Alves, Ricardo Schneider, Camila da Silva, Carlos Eduardo Borba
Summary: The use of heterogeneous catalysts in the transesterification process under pressurized conditions can minimize the operation temperature, making it more viable. This study aimed to determine the optimal synthesis condition of a catalyst based on KF and glass waste for transesterification in a continuous reactor under pressurized media. A central composite rotational design was used, and the catalyst's mass ratio and calcination temperature were varied. The results showed that the KF/WGP catalyst had the potential to produce esters in continuous flow under pressurized conditions, with a high ethyl ester content and low potassium leaching.
Article
Chemistry, Applied
Shohreh Fahimirad, Hamid Abtahi, Parastu Satei, Ehsanollah Ghaznavi-Rad, Mohsen Moslehi, Ali Ganji
Summary: The study successfully fabricated electrospun nanofibers containing curcumin-loaded chitosan nano-encapsulated particles. Electrospraying curcumin on the surface enhanced antibacterial, antioxidant, and cell proliferation properties, as well as higher swelling and water vapor transition rates, leading to significant improvement in wound healing in vivo.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Pakawat Chittratan, Jongjit Chalitangkoon, Karn Wongsariya, Arjnarong Mathaweesansurn, Ekarat Detsri, Pathavuth Monvisade
Summary: Chitosan-grafted thymol coated on gold nanoparticles exhibited strong antimicrobial activity against cariogenic bacteria and provided good dispersion and stability. The synthesis step and tuning of the capping agent strongly influenced the antimicrobial activity of the nanoparticles.
Article
Dentistry, Oral Surgery & Medicine
Mariele Vertuan, Paula Fontana Machado, Beatriz Martines de Souza, Aline Silva Braga, Ana Carolina Magalhaes
Summary: The experimental solution containing TiF4/NaF and chitosan showed no antimicrobial effect but significantly reduced enamel caries development compared to the control group under this model.
JOURNAL OF DENTISTRY
(2021)
Article
Biochemistry & Molecular Biology
Mingyu Liu, Zhongyang Zang, Shusheng Zhang, Gangfeng Ouyang, Runping Han
Summary: Zirconium (IV)-impregnated magnetic chitosan graphene oxide (Zr-MCGO) was synthesized to remove fluoride from aqueous solution in batch mode. The study showed that Zr-MCGO exhibited good defluoridation capacity at different pH levels, could be easily separated using an external magnet, and potential adsorption mechanisms include electrostatic force, ligand exchange, and Lewis acid-base interaction.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Materials Science, Multidisciplinary
Carlos Bruno Barreto Luna, Edcleide Maria Araujo, Danilo Diniz Siqueira, Dayanne Diniz de Souza Morais, Edson Antonio dos Santos Filho, Marcus Vinicius Lia Fook
JOURNAL OF ELASTOMERS AND PLASTICS
(2020)
Article
Materials Science, Multidisciplinary
Carlos Bruno Barreto Luna, Danilo Diniz Siqueira, Edcleide Maria Araujo, Marcus Vinicius Lia Fook
JOURNAL OF ELASTOMERS AND PLASTICS
(2020)
Article
Engineering, Multidisciplinary
Nichollas Guimardes Jaques, Jose William de Lima Souza, Matthias Popp, Jana Kolbe, Marcus Vinicius Lia Fook, Renate Maria Ramos Wellen
COMPOSITES PART B-ENGINEERING
(2020)
Article
Materials Science, Multidisciplinary
Hermano de Vasconcelos Pina, Andreza Josiany Aires de Farias, Francivandi Coelho Barbosa, Jose William de Lima Souza, Ana Beatriz de Sousa Barros, Marcio Jose Batista Cardoso, Marcus Vinicius Lia Fook, Renate Maria Ramos Wellen
MATERIALS RESEARCH EXPRESS
(2020)
Article
Nanoscience & Nanotechnology
J. F. B. Rodrigues, E. P. S. Junior, K. S. Oliveira, M. R. R. Wellen, S. S. Simoes, M. V. L. Fook
JOURNAL OF NANOMATERIALS
(2020)
Article
Thermodynamics
Josue da Silva Buriti, Maria Eduarda Vasconcelos Barret, Francivandi Coelho Barbosa, Bruna Michele Arruda de Brito Buriti, Jose William de Lima Souza, Hermano de Vasconcelos Pina, Patricia de Luna Rodrigues, Marcus Vinicius Lia Fook
Summary: This study synthesized pure and silver-doped bioglasses using the sol-gel method, developed chitosan/45S5-Ag biocomposites, and evaluated their performance. The silver-doped bioglasses showed enhanced antibacterial activity and biodegradability without cytotoxicity, making them suitable for tissue regeneration.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Anatomy & Morphology
Elizandra Silva da Penha, Rogerio Lacerda-Santos, Luanna Abilio Diniz Melquiades de Medeiros, Rosana Araujo Rosendo, Antonielson dos Santos, Marcus Vinicius Lia Fook, Wladymyr Jefferson Bacalhau de Sousa, Millena de Oliveira Firmino, Erik Montagna
MICROSCOPY RESEARCH AND TECHNIQUE
(2020)
Article
Pharmacology & Pharmacy
Thayse S. Medeiros, Livia M. C. C. Moreira, Tiago M. T. Oliveira, Demis F. Melo, Eduardo P. Azevedo, Amanda E. G. Gadelha, Marcus V. L. Fook, Joao A. Oshiro-Junior, Bolivar P. G. L. Damasceno
Article
Chemistry, Applied
Daniel Bezerra Lima, Monica Adriana Araujo de Souza, Gabriel Goetten de Lima, Erick Platini Ferreira Souto, Hugo Miguel Lisboa Oliveira, Marcus Vinicius Lia Fook, Marcelo Jorge Cavalcanti de Sa
CARBOHYDRATE POLYMERS
(2020)
Article
Chemistry, Physical
Bruna de Siqueira Nunes, Rosana Araujo Rosendo, Abrahao Alves de Oliveira Filho, Marcus Vinicius Lia Fook, Wladymyr Jefferson Bacalhau de Sousa, Rossemberg Cardoso Barbosa, Hermano de Vasconcelos Pina, Joao Emidio da Silva Neto, Solomon Kweku Sagoe Amoah, Carlos Eduardo Fontana, Carlos Eduardo da Silveira Bueno, Alexandre Sigrist De Martin
Summary: This study aimed to develop a chitosan-based biomaterial with calcium hydroxide and 2% chlorhexidine for intracanal treatment to reduce microorganisms in the root canal system. The formulated biomaterial showed promising antimicrobial properties, with larger inhibition zones observed in samples containing chlorhexidine.
Article
Polymer Science
Henrique Nunes da Silva, Milena Costa da Silva, Flavia Suzany Ferreira dos Santos, Jose Alberto Campos da Silva Junior, Rossemberg Cardoso Barbosa, Marcus Vinicius Lia Fook
Summary: This study aimed to develop CS woven meshes from wet-spun mono- and multifilament threads for potential biomedical applications, with mechanical properties, biodegradation rate, and fluid absorption influenced by thread configuration. Hydrated CS meshes showed a larger elastic zone, suggesting potential applications in the biomedical field.
Article
Polymer Science
Rafaela Q. C. Melo, Marcus V. Lia Fook, Antonio G. B. de Lima
Review
Polymer Science
Francivandi Coelho Barbosa, Milena Costa da Silva, Henrique Nunes da Silva, Danyllo Albuquerque, Allyson Antonio Ribeiro Gomes, Suedina Maria de Lima Silva, Marcus Vinicius Lia Fook
Article
Chemistry, Physical
Hugo Yves C. Eulalio, Mariana Vieira, Thiago B. Fideles, Helena Tomas, Suedina M. L. Silva, Carlos A. Peniche, Marcus Vinicius L. Fook
Article
Polymer Science
I. D. S. Silva, J. J. P. Barros, A. Albuquerque, N. G. Jaques, M. V. L. Fook, R. M. R. Wellen
EXPRESS POLYMER LETTERS
(2020)
