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Wang S, Wang S, Yang L, Wang P, Song H, Liu H. pH-responsive Aminated mesoporous silica microspheres modified with soybean hull polysaccharides for curcumin encapsulation and controlled release. Food Chem 2024; 454:139832. [PMID: 38820641 DOI: 10.1016/j.foodchem.2024.139832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 05/20/2024] [Accepted: 05/23/2024] [Indexed: 06/02/2024]
Abstract
Mesoporous silica microspheres (MSMs) possess poor biocompatibility. This study focuses on integrating MSMs with polymers to obtain hybrid materials with superior performance compared to the individual components and responsive release in specific environments. The synthesized MSMs were aminated, and subsequently, soybean hull polysaccharide (SHPs) was modified onto MSMs-NH2 to produce MSMs-NH2@SHPs nanoparticles. The encapsulation rate, loading rate of curcumin (Cur), and in vitro release behavior were investigated. Results indicated that the encapsulation efficiency of Cur by MSMs-NH2@SHPs nanoparticles reached 75.58%, 6.95 times that of MSMs-NH2 with a load capacity of 35.12%. It is noteworthy that these nanoparticles exhibit pH-responsive release capacity in vitro. The cumulative release rate of the three nanoparticles at pH 5.0 was higher than that at pH 7.4. MSMs-NH2@SHPs had a cumulative release rate of 56.55% at pH 7.4, increasing to 76.21% at pH 5.0. In vitro experiments have shown that MSMs-based nanoparticles have high delivery efficiency and can achieve pH-sensitive drug release, with a high release rate in a slightly acidic acid, highlighting the potential for controlled release of Cur.
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Affiliation(s)
- Shumin Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China
| | - Shengnan Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou, 121013, China.
| | - Lina Yang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou, 121013, China
| | - Peng Wang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou, 121013, China
| | - Hong Song
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou, 121013, China
| | - He Liu
- College of Food Science and Technology, Bohai University, Jinzhou 121013, China; Grain and Cereal Food Bio-efficient Transformation Engineering Research Center of Liaoning Province, Jinzhou, 121013, China
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Chen M, Sun Y, Niu J, Zhou H, Zhou Y, Chen X. As(V) adsorption by FeOOH@coal gangue composite from aqueous solution: performance and mechanisms. ENVIRONMENTAL TECHNOLOGY 2024; 45:4376-4387. [PMID: 37609908 DOI: 10.1080/09593330.2023.2251655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 04/22/2023] [Indexed: 08/24/2023]
Abstract
Arsenic (As) pollution in water poses a significant threat to the ecological environment and human health. Meanwhile, the resource utilisation of coal gangue is of utmost importance in ecologically sustainable development. Thus, the FeOOH@coal gangue composite (FeOOH@CG) was synthesised for As(V) adsorption in this study. The results showed that α-FeOOH, β-FeOOH and Schwertmannite loaded on the surface of FeOOH@CG. Moreover, the adsorption behaviour of As(V) by FeOOH@CG was investigated under different reaction conditions, such as pH, contact time, initial concentration and co-existing anions. The optimum adsorption conditions were as follows: initial As(V) concentration of 60 mg/L, pH of 3.0 and adsorption time of 180-240 h. The adsorption capacity of FeOOH@CG for As(V) was pH-dependent and the maximum adsorption capacity was 185.94 mg/g. The presence of anions (H 2 PO 4 - , HCO 3 - and C l - ) decreased the adsorption efficiency of FeOOH@CG for As(V). The adsorption process of FeOOH@CG for As(V) could be well-described by the pseudo-second-order model and Langmuir model, indicating that the adsorption process mainly depended on chemical adsorption. The thermodynamic analysis suggested that the adsorption was a spontaneous and endothermic process. In addition, according to the analyses of XRD, FTIR and XPS, the dominant mechanisms of As(V) adsorption by FeOOH@CG were electrostatic attraction, complexation and precipitation. In conclusion, FeOOH@CG has great potential as an efficient and environmentally friendly adsorbent for As(V) adsorption from aqueous solution.
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Affiliation(s)
- Min Chen
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
- Taizhou Institute of Zhejiang University, Zhejiang University, Taizhou, People's Republic of China
| | - Yuan Sun
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
| | - Jingwei Niu
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
| | - Hai Zhou
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
| | - Yuzhi Zhou
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
- Anhui Engineering Laboratory for Comprehensive Utilization of Water and Soil Resources & Ecological Protection in Mining Area with High Groundwater Level, Huainan, People's Republic of China
| | - Xiaoyang Chen
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, People's Republic of China
- Anhui Engineering Laboratory for Comprehensive Utilization of Water and Soil Resources & Ecological Protection in Mining Area with High Groundwater Level, Huainan, People's Republic of China
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Anghel N, Spiridon I, Dinu MV, Vlad S, Pertea M. Xanthan-Polyurethane Conjugates: An Efficient Approach for Drug Delivery. Polymers (Basel) 2024; 16:1734. [PMID: 38932084 PMCID: PMC11207320 DOI: 10.3390/polym16121734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/07/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024] Open
Abstract
The antifungal agent, ketoconazole, and the anti-inflammatory drug, piroxicam, were incorporated into matrices of xanthan or oleic acid-esterified xanthan (Xn) and polyurethane (PU), to develop topical drug delivery systems. Compared to matrices without bioactive compounds, which only showed a nominal compressive stress of 32.18 kPa (sample xanthan-polyurethane) at a strain of 71.26%, the compressive resilience of the biomaterials increased to nearly 50.04 kPa (sample xanthan-polyurethane-ketoconazole) at a strain of 71.34%. The compressive strength decreased to around 30.67 kPa upon encapsulating a second drug within the xanthan-polyurethane framework (sample xanthan-polyurethane-piroxicam/ketoconazole), while the peak sustainable strain increased to 87.21%. The Weibull model provided the most suitable fit for the drug release kinetics. Unlike the materials based on xanthan-polyurethane, those made with oleic acid-esterified xanthan-polyurethane released the active ingredients more slowly (the release rate constant showed lower values). All the materials demonstrated antimicrobial effectiveness. Furthermore, a higher volume of piroxicam was released from oleic acid-esterified xanthan-polyurethane-piroxicam (64%) as compared to xanthan-polyurethane-piroxicam (44%). Considering these results, materials that include polyurethane and either modified or unmodified xanthan showed promise as topical drug delivery systems for releasing piroxicam and ketoconazole.
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Affiliation(s)
- Narcis Anghel
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.S.); (M.-V.D.); (S.V.)
| | - Iuliana Spiridon
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.S.); (M.-V.D.); (S.V.)
| | - Maria-Valentina Dinu
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.S.); (M.-V.D.); (S.V.)
| | - Stelian Vlad
- “Petru Poni” Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.S.); (M.-V.D.); (S.V.)
| | - Mihaela Pertea
- Department of Plastic Surgery and Reconstructive Microsurgery, ”Sf. Spiridon” Emergency County Hospital Iasi, “Gr. T. Popa” University of Medicine and Pharmacy Iasi, Bulevardul Independentei No. 1, 700115 Iasi, Romania;
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Yamin M, Ghouri ZK, Rohman N, Syed JA, Skelton A, Ahmed K. Unravelling pH/pKa influence on pH-responsive drug carriers: Insights from ibuprofen-silica interactions and comparative analysis with carbon nanotubes, sulfasalazine, and alendronate. J Mol Graph Model 2024; 128:108720. [PMID: 38324969 DOI: 10.1016/j.jmgm.2024.108720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/04/2024] [Accepted: 01/23/2024] [Indexed: 02/09/2024]
Abstract
This study employs density functional theory to explore the interaction between ibuprofen (IBU) and silica, emphasizing the influence of the trimethylsilyl (TMS) functional group for designing pH-responsive drug carriers. The surface (S) and drug (D) molecules' neutral (0) or deprotonated (-1) states were taken into consideration during the investigation. The likelihood of these states was determined based on the pKa values and the desired pH conditions. To calculate the pH-dependent interaction energy (EintpH), four different situations have been identified: S0D0, S0D-1, S-1D0, and S-1D-1.The electrostatic component of interaction energy aligns favorably with its theoretical value in both the Debye-Hückel and Grahame models. The investigation has gathered first-hand experimental data on the drug loading and release of pH-responsive mesoporous silica nanoparticles. Effective drug loading was observed in the acidic environment of the stomach (pH 2-5), followed by a release in the slightly basic to neutral pH of the small intestine (pH 7.4), These findings align with existing literature. The results revealed horizontal drug adherence on silica surfaces, improving binding capabilities. Comparisons were made with combinations involving carboxylated carbon nanotubes and ibuprofen, silica, and sulfasalazine, and silica and alendronate, exploring drug loading/release dynamics associated with positive/negative interaction energies. The investigation, supported by experimental data, contributes valuable insights into pH-responsive mesoporous silica nanoparticles, offering new design possibilities for drug carriers.
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Affiliation(s)
- Marriam Yamin
- Department of Biosciences, Salim Habib University, Karachi, Pakistan
| | - Zafar Khan Ghouri
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan; Net Zero Industry Innovation Centre, Teesside University, Middlesbrough, Tees Valley TS1 3BX, UK
| | - Nashiour Rohman
- Department of Chemistry, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat P. C. 123, Oman
| | - Junaid Ali Syed
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Adam Skelton
- Department of Pharmaceutical Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa.
| | - Khalid Ahmed
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan.
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Bennacer L, Benmammar D, Ahfir ND, Alem A, Mignot M, Pantet A, El Maana S. Potential of using Alfa grass fibers (Stipa Tenacissima L.) to remove Pb 2+, Cu 2+, and Zn 2+ from an aqueous solution. ENVIRONMENTAL TECHNOLOGY 2024; 45:1651-1667. [PMID: 36378021 DOI: 10.1080/09593330.2022.2148572] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
This study used alfa grass fibres as a natural low-cost adsorbent to remove lead, copper, and zinc ions from aqueous solutions. The adsorbent was characterized by FTIR, SEM, BET surface area, ATG, and XRD techniques. The effects of pH, contact time, initial metal concentration, and adsorbent dosage on the adsorption efficiency were evaluated in batch experiments. The results showed that the adsorption of all metals was fast, and optimal removal efficiency was achieved within 25 min of contact time using 5000 mg/L of Alfa fibres at pH 6.3. The adsorption selectivity order was Pb2+ > Cu2+ > Zn2+ with Pb2+ removal efficiencies up to 97.6%. The adsorption kinetics were best explained by a pseudo-second-order kinetic model. The experimental adsorption data fitted very well with the Langmuir isotherm model, and less well with the Freundlich and Temkin isotherm models. The maximum adsorption capacities were respectively 14.492, 11.904, and 8.695 mg/g for Pb2+, Cu2+, and Zn2+. The results of this study indicated that Alfa fibres could be used as effective adsorbent for the removal of Pb2+, Cu2+, and Zn2+ from aqueous solutions.
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Affiliation(s)
- Lyacine Bennacer
- University of Ahmed Draia - Adrar, Laboratory of Energy, Environment and Information System, LEESI, Adrar, Algeria
| | - Djilali Benmammar
- University of Ahmed Draia - Adrar, Laboratory of Energy, Environment and Information System, LEESI, Adrar, Algeria
| | | | | | - Mélanie Mignot
- Normandie Université, INSA de Rouen, Avenue de l'Université, Saint-Etienne-du-Rouvray, France
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Rohman N, Ahmed K, Skelton AA, Mohiuddin T, Khan I, Selvaraj R, Yamin M. Theoretical insights and implications of pH-dependent drug delivery systems using silica and carbon nanotube. J Mol Graph Model 2023; 125:108609. [PMID: 37647724 DOI: 10.1016/j.jmgm.2023.108609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/14/2023] [Accepted: 08/21/2023] [Indexed: 09/01/2023]
Abstract
In this paper we have studied the density functional theory of four drugs ibuprofen, alendronate, Sulfasalazine and paracetamol with quartz, propylamine, trimethylamine functionalized quartz and carboxyl modified carbon nanotube. The attractive and repulsive interaction energies between drugs and quartz is obtained at various pH values. The attractive and repulsive energies are well correlated with experimental drug loading and releasing behavior by mesoporous silica nanoparticles. Further, a theoretical model is developed that accounts the electrostatic interaction between silica and drug and the model can predict the drug loading and releasing behavior by silica nanoparticles at various pH values. Sulfasalazine can be taken orally and loaded with trimethyl ammonium functionalized mesoporous silica nanoparticles, which keeps the drug in tact with the carrier in the acidic environment of the stomach and releases it into the neutral or basic medium of the small intestine. Alendronate may be loaded and released from propylamine functionalized mesoporous silica nanoparticles in the ranges of 1-5 and > 8, respectively. Ibuprofen is absorbed in an acidic environment and released in basic conditions for carboxyl modified carbon nanotube. The loading and releasing pH ranges for paracetamol in trimethylammonium functionalized mesoporous silica nanoparticles are 4-8 and >8, respectively. We also convert the pH-dependent variant of the diffusion-controlled Higuchi equation. We have changed the original Higuchi equation to produce the pH-dependent variation by incorporating the Nernst-Planck equation into Flick's first law. The updated equation could be used to forecast when medication particles with varying release times will emerge from a nanoparticles matrix.
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Affiliation(s)
- Nashiour Rohman
- Department of Physics, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat, P. C. 123, Oman.
| | - Khalid Ahmed
- L. E. J. Nanotechnology Centre, H. E. J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Adam A Skelton
- Department of Pharmaceutical Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa.
| | - Tariq Mohiuddin
- Department of Physics, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat, P. C. 123, Oman
| | - Imran Khan
- Department of Chemistry, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat, P. C. 123, Oman
| | - Rengaraj Selvaraj
- Department of Chemistry, College of Science, Sultan Qaboos University, P. O. Box 36, Al-khoudh, Muscat, P. C. 123, Oman
| | - Marriam Yamin
- Department of Biosciences, Salim Habib University, Karachi, Pakistan
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Tan HM, Pan CG, Yin C, Yu K. Toward systematic understanding of adsorptive removal of legacy and emerging per-and polyfluoroalkyl substances (PFASs) by various activated carbons (ACs). ENVIRONMENTAL RESEARCH 2023; 233:116495. [PMID: 37364627 DOI: 10.1016/j.envres.2023.116495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/12/2023] [Accepted: 06/22/2023] [Indexed: 06/28/2023]
Abstract
Per-and polyfluoroalkyl substances (PFASs) have received great attention due to their persistence, bioaccumulation and toxicity. Various activated carbons (ACs) exhibit wide variability in adsorptive performance towards PFASs. In order to gain a systematic understanding of adsorptive removal of legacy and emerging PFASs by ACs, the adsorption of ten PFASs on various ACs was comprehensively investigated. Results showed that granular activated carbon-1 (GAC-1) and powdered activated carbon-1 (PAC-1) removed more than 90% of all target PFASs. Particle size, surface charge, and micropores quantity of ACs were closely related to their performance for PFASs removal. Electrostatic interaction, hydrophobic interaction, surface complexation and hydrogen bonding were the adsorption mechanisms, with hydrophobic interaction being the predominant adsorptive force. Physical and chemical adsorption were both involved in PFAS adsorption. The removal rates of PFASs by GAC-1 decreased from 93%-100% to 15%-66% in the presence of 5 mg/L fulvic acid (FA). GAC was able to remove more PFASs under acidic medium, whereas PAC removed hydrophobic PFASs better under the neutral medium. The removal rates of PFASs by GAC-3 increased significantly from 0%-21% to 52%-97% after being impregnated with benzalkonium chlorides (BACs), demonstrating the superiority of this modification method. Overall, this study provided theoretical support for removing PFASs from water phase with ACs.
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Affiliation(s)
- Hong-Ming Tan
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, School of Marine Sciences, Guangxi University, Nanning, 530004, China; School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Chang-Gui Pan
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, School of Marine Sciences, Guangxi University, Nanning, 530004, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China.
| | - Chao Yin
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, School of Marine Sciences, Guangxi University, Nanning, 530004, China
| | - Kefu Yu
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, School of Marine Sciences, Guangxi University, Nanning, 530004, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
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Iranshahy M, Hanafi-Bojd MY, Aghili SH, Iranshahi M, Nabavi SM, Saberi S, Filosa R, Nezhad IF, Hasanpour M. Curcumin-loaded mesoporous silica nanoparticles for drug delivery: synthesis, biological assays and therapeutic potential - a review. RSC Adv 2023; 13:22250-22267. [PMID: 37492509 PMCID: PMC10363773 DOI: 10.1039/d3ra02772d] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/22/2023] [Indexed: 07/27/2023] Open
Abstract
Curcumin-loaded mesoporous silica nanoparticles (MSNs) have shown promise as drug delivery systems to address the limited pharmacokinetic characteristics of curcumin. Functionalization with folic acid and PEGylation enhance anticancer activity, biocompatibility, stability, and permeability. Co-delivery with other drugs results in synergistically enhanced cytotoxic activity. Environment-responsive MSNs prevent undesirable drug leakage and increase selectivity towards target tissues. This review summarizes the methods of Cur-loaded MSN synthesis and functionalization and their application in various diseases, and also highlights the potential of Cur-loaded MSNs as a promising drug delivery system.
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Affiliation(s)
- Milad Iranshahy
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences Mashhad Iran
| | | | | | - Mehrdad Iranshahi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences Mashhad Iran
| | - Seyed Mohammad Nabavi
- Advanced Medical Pharma (AMP-Biotec), Biopharmaceutical Innovation Centre Via Cortenocera 82030 San Salvatore Telesino BN Italy
- Nutringredientes Research Center, Federal Institute of Education, Science and Technology (IFCE) Brazil
| | - Satar Saberi
- Department of Chemistry, Faculty of Science, Farhangian University Tehran Iran
| | - Rosanna Filosa
- Dipartimento di Scienze e Tecnologie, Università Degli Studi Del Sannio Benevento Italy
| | - Iman Farzam Nezhad
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad Mashhad Iran
| | - Maede Hasanpour
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences Mashhad Iran
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Wang F, Shen X, Wu Y, Wang Y, Zhang H, Ding Y, Zhu W. Evaluation of the effectiveness of amendments derived from vermicompost combined with modified shell powder on Cd immobilization in Cd-contaminated soil by multiscale experiments. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115166. [PMID: 37348213 DOI: 10.1016/j.ecoenv.2023.115166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/06/2023] [Accepted: 06/18/2023] [Indexed: 06/24/2023]
Abstract
The widespread heavy metal contamination of agricultural soils poses an enormous challenge to food safety. To evaluate the Cd immobilization potential of vermicompost combined with modified shell powder (VMSP) on Cd-contaminated soil, batch adsorption tests and field experiments were conducted. First, the Cd2+ removal characteristics and adsorption mechanisms of vermicompost (V), vermicompost combined with shell powder (VSP), and VMSP in an aqueous solution were investigated by batch tests. Then, 3 kg·m2 V, VSP, and VMSP doses were applied to Cd-contaminated farmland soils as soil amendments to plant green garlic (Allium sativum L.) and investigate their Cd immobilization effects in Cd-contaminated soils. Batch adsorption tests showed that VMSP was most effective for Cd2+ removal, with adsorption rates as high as 85.7-99.79% and desorption rates of approximately 1.25-1.34%. Combining further characterization analysis of VMSP, it was demonstrated that the adsorption mechanism of Cd2+ was monolayer chemisorption, mainly involving the complexation reaction of Cd2+ with organic functional groups and the precipitation reaction of Cd2+ with mineral elements. The field experiment showed that adding V, VSP, and VMSP effectively inhibited the enrichment of Cd in green garlic, and the Cd content was reduced by 42.18%, 46.88%, and 68.75%, respectively. However, only the Cd content of green garlic treated with VMSP was lower than the national standard for food safety in China (Cd≤ 0.2 mg·kg-1). V, VSP, and VMSP additions improved soil fertility and reduced Cd bioavailability in the soil by 15.5%, 18.9%, and 36.3%, respectively. In addition, V, VSP, and VMSP addition increased bacterial diversity and improved bacterial communities and functions in the soil by improving basic soil properties and reducing Cd-related toxicity. The results indicated that VMSP is a promising amendment for Cd immobilization in Cd-contaminated farmland soils.
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Affiliation(s)
- Feng Wang
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Engineering, Hangzhou Normal University, Hangzhou 311121, China; Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Xuyang Shen
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - YuKe Wu
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - YiFan Wang
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Hangjun Zhang
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Ying Ding
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Weiqin Zhu
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Engineering, Hangzhou Normal University, Hangzhou 311121, China.
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10
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Ali NS, Harharah HN, Salih IK, Cata Saady NM, Zendehboudi S, Albayati TM. Applying MCM-48 mesoporous material, equilibrium, isotherm, and mechanism for the effective adsorption of 4-nitroaniline from wastewater. Sci Rep 2023; 13:9837. [PMID: 37330584 DOI: 10.1038/s41598-023-37090-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 06/15/2023] [Indexed: 06/19/2023] Open
Abstract
In this work, the MCM-48 mesoporous material was prepared and characterized to apply it as an active adsorbent for the adsorption of 4-nitroaniline (4-Nitrobenzenamine) from wastewater. The MCM-48 characterizations were specified by implementing various techniques such as; scanning electron microscopy (SEM), Energy dispersive X-ray analysis (EDAX), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area, pore size distribution (PSD), and Fourier transform infrared (FTIR). The batch adsorption results showed that the MCM-48 was very active for the 4-nitroaniline adsorption from wastewater. The adsorption equilibrium results were analyzed by applying isotherms like Langmuir, Freundlich, and Temkin. The maximum experimental uptake according to type I Langmuir adsorption was found to be 90 mg g-1 approximately. The Langmuir model with determination coefficient R2 = 0.9965 is superior than the Freundlich model R2 = 0.99628 and Temkin model R2 = 0.9834. The kinetic adsorption was investigated according to pseudo 1st order, pseudo 2nd order, and Intraparticle diffusion model. The kinetic results demonstrated that the regression coefficients are so high R2 = 0.9949, that mean the pseudo 2nd order hypothesis for the adsorption mechanism process appears to be well-supported. The findings of adsorption isotherms and kinetics studies indicate the adsorption mechanism is a chemisorption and physical adsorption process.
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Affiliation(s)
- Nisreen S Ali
- Materials Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq
| | - Hamed N Harharah
- Department of Chemical Engineering, College of Engineering, King Khalid University, 61411, Abha, Kingdom of Saudi Arabia
| | - Issam K Salih
- Department of Chemical Engineering and Petroleum Industries, Al-Mustaqbal University College, Babylon, 51001, Iraq
| | - Noori M Cata Saady
- Department of Civil Engineering, Memorial University of Newfoundland, St. John's, NL, A1B 3X5, Canada
| | - Sohrab Zendehboudi
- Department of Process Engineering, Memorial University of Newfoundland, St. John's, NL, A1B 3X5, Canada
| | - Talib M Albayati
- Department of Chemical Engineering, University of Technology-Iraq, 52 Alsinaa St., P.O. Box 35010, Baghdad, Iraq.
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Farousha K, M. Rangaraj V, K R, Abu Haija M, Banat F. Development of date seed extract encapsulated MCM-41: Characterization, release kinetics, antioxidant and antibacterial studies. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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12
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Habeche F, Boukoussa B, Issam I, Mokhtar A, Lu Writing X, Iqbal J, Benali F, Hacini S, Hachemaoui M, Abboud M. Synthesis and application of metal nanoparticles-loaded mesoporous silica toward the reduction of organic pollutants in a simple and binary system. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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13
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TARTESSUS: A Customized Electrospun Drug Delivery System Loaded with Irinotecan for Local and Sustained Chemotherapy Release in Pancreatic Cancer. Bioengineering (Basel) 2023; 10:bioengineering10020183. [PMID: 36829677 PMCID: PMC9952015 DOI: 10.3390/bioengineering10020183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/17/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
Post-surgical chemotherapy in pancreatic cancer has notorious side effects due to the high dose required. Multiple devices have been designed to tackle this aspect and achieve a delayed drug release. This study aimed to explore the controlled and sustained local delivery of a reduced drug dose from an irinotecan-loaded electrospun nanofiber membrane (named TARTESSUS) that can be placed on the patients' tissue after tumor resection surgery. The drug delivery system formulation was made of polycaprolactone (PCL). The mechanical properties and the release kinetics of the drug were adjusted by the electrospinning parameters and by the polymer ratio between 10 w.t.% and 14 w.t.% of PCL in formic acid:acetic acid:chloroform (47.5:47.5:5). The irinotecan release analysis was performed and three different release periods were obtained, depending on the concentration of the polymer in the dissolution. The TARTESSUS device was tested in 2D and 3D cell cultures and it demonstrated a decrease in cell viability in 2D culture between 72 h and day 7 from the start of treatment. In 3D culture, a decrease in viability was seen between 72 h, day 7 (p < 0.001), day 10 (p < 0.001), 14 (p < 0.001), and day 17 (p = 0.003) as well as a decrease in proliferation between 72 h and day 10 (p = 0.030) and a reduction in spheroid size during days 10 (p = 0.001), 14 (p < 0.001), and 17 (p < 0.001). In conclusion, TARTESSUS showed a successful encapsulation of a chemotherapeutic drug and a sustained and delayed release with an adjustable releasing period to optimize the therapeutic effect in pancreatic cancer treatment.
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Adsorption of Arsenic, Lead, Cadmium, and Chromium Ions from Aqueous Solution Using a Protonated Chabazite: Preparation, Characterization, and Removal Mechanism. ADSORPT SCI TECHNOL 2023. [DOI: 10.1155/2023/2018121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The adsorption of As(V), Pb(II), Cd(II), and Cr(III) ions from aqueous solutions on natural and modified chabazite was studied. The functionalization of chabazite was performed via a protonation and calcination with the aim of generating Lewis acid sites to improve its anion exchange properties. The surface and physicochemical properties of both adsorbents were studied and compared. The adsorption isotherms of tested heavy metal ions were quantified and modeled to identify the best isotherm equation. Steric parameters for the adsorption of these ions were also calculated with a monolayer statistical physics model. Natural chabazite showed the maximum adsorption capacity for Pb(II), while the modified zeolite improved its As(V) properties in 79%. These results showed that the modified zeolite was able to remove both cations and anions from aqueous solution. The application of this functionalized chabazite can be extended for the removal of other anionic pollutants from water, thus opening the possibility of preparing new adsorbents with tailored properties for water treatment.
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15
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Cai Y, Cao Q, Li J, Liu T. Targeting and functional effects of biomaterials-based nanoagents for acute pancreatitis treatment. Front Bioeng Biotechnol 2023; 10:1122619. [PMID: 36704304 PMCID: PMC9871307 DOI: 10.3389/fbioe.2022.1122619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 12/29/2022] [Indexed: 01/12/2023] Open
Abstract
Acute pancreatitis (AP) is a severe life-threatening inflammatory disease showing primary characteristics of excessive inflammatory response and oxidative stress. Based on the pathophysiology of AP, several anti-inflammatory and anti-oxidative stress agents have been studied. However, the low accumulated concentrations and scattered biodistributions limit the application of these agents. With the development of nanotechnology, functional nanomaterials can improve the bioavailability of drugs and extend their half-life by reducing immunogenicity to achieve targeted drug delivery. The biomaterial-based carriers can mediate the passive or active delivery of drugs to the target site for improved therapeutic effects, such as anti-oxidation and anti-inflammation for AP treatment. Other biomaterials-based nanomedicine may exhibit different functions with/without targeting effects. In this review, we have summarized the targeting and functional effects of biomaterials-based nanoagents specifically for AP treatment.
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Affiliation(s)
- Yujie Cai
- Department of Colorectal and Anal Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Qian Cao
- Department of Education, The Second Hospital of Jilin University, Changchun, China
| | - Jiannan Li
- Department of Colorectal and Anal Surgery, The Second Hospital of Jilin University, Changchun, China,*Correspondence: Jiannan Li, ; Tongjun Liu,
| | - Tongjun Liu
- Department of Colorectal and Anal Surgery, The Second Hospital of Jilin University, Changchun, China,*Correspondence: Jiannan Li, ; Tongjun Liu,
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16
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Kamali Dolatabadi A, Mokhtari J, Talebian N. Silica xerogel carrier as Encapsulating Material for the in-vitro controlled release of Montelukast. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2022.110378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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17
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Chen M, Song F, Wu N, Luo H, Cai X, Li Y. Corn‐like mSiO
2
@ZIF‐8 Composite Load with Curcumin for Target Cancer Drug‐Delivery System. ChemistrySelect 2022. [DOI: 10.1002/slct.202204213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Menglan Chen
- School of Pharmacy Guizhou University Guiyang 550025 Guizhou China
- Guizhou Engineering Laboratory for Synthetic Drugs Guizhou University Guiyang 550025 Guizhou
| | - Fangxiang Song
- School of Chemistry and Chemical Engineering Guizhou University Guiyang 550025 Guizhou China
| | - Nian Wu
- School of Pharmacy Guizhou University Guiyang 550025 Guizhou China
- Guizhou Engineering Laboratory for Synthetic Drugs Guizhou University Guiyang 550025 Guizhou
| | - Honghuan Luo
- School of Pharmacy Guizhou University Guiyang 550025 Guizhou China
- Guizhou Engineering Laboratory for Synthetic Drugs Guizhou University Guiyang 550025 Guizhou
| | - Xiaoqin Cai
- School of Pharmacy Guizhou University Guiyang 550025 Guizhou China
- Guizhou Engineering Laboratory for Synthetic Drugs Guizhou University Guiyang 550025 Guizhou
| | - Yan Li
- School of Pharmacy Guizhou University Guiyang 550025 Guizhou China
- Guizhou Engineering Laboratory for Synthetic Drugs Guizhou University Guiyang 550025 Guizhou
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18
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Guo Y, Cheng M, Cui Y, Zhang R, Zhao Z, Wang X, Guo S. Effect of SBA-15-CEO on properties of potato starch film modified by low-temperature plasma. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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19
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Mdlovu NV, Lin KS, Weng MT, Lin YS, Liu SY. Preparation and in-vitro/in-vivo evaluation of doxorubicin-loaded magnetic SBA-15 nanocomposites from rice husk for enhancing therapeutic efficacy. Colloids Surf B Biointerfaces 2022; 220:112923. [DOI: 10.1016/j.colsurfb.2022.112923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 10/03/2022] [Accepted: 10/10/2022] [Indexed: 11/27/2022]
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20
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Abbood NS, Ali NS, Khader EH, Majdi HS, Albayati TM, Saady NMC. Photocatalytic degradation of cefotaxime pharmaceutical compounds onto a modified nanocatalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04879-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Chua A, Tran TT, Pu S, Park JW, Hadinoto K. Lyophilization of Curcumin–Albumin Nanoplex with Sucrose as Cryoprotectant: Aqueous Reconstitution, Dissolution, Kinetic Solubility, and Physicochemical Stability. Int J Mol Sci 2022; 23:ijms231911731. [PMID: 36233033 PMCID: PMC9569908 DOI: 10.3390/ijms231911731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/20/2022] [Accepted: 09/30/2022] [Indexed: 11/28/2022] Open
Abstract
An amorphous curcumin (CUR) and bovine serum albumin (BSA) nanoparticle complex (nanoplex) was previously developed as a promising anticancer nanotherapy. The CUR-BSA nanoplex had been characterized in its aqueous suspension form. The present work developed a dry-powder form of the CUR-BSA nanoplex by lyophilization using sucrose as a cryoprotectant. The cryoprotective activity of sucrose was examined at sucrose mass fractions of 33.33, 50.00, and 66.66% by evaluating the lyophilized nanoplex’s (1) aqueous reconstitution and (2) CUR dissolution and kinetic solubility. The physicochemical stabilizing effects of sucrose upon the nanoplex’s 30-day exposures to 40 °C and 75% relative humidity were examined from (i) aqueous reconstitution, (ii) CUR dissolution, (iii) CUR and BSA payloads, (iv) amorphous form stability, and (v) BSA’s structural integrity. The good cryoprotective activity of sucrose was evidenced by the preserved BSA’s integrity and good aqueous reconstitution, resulting in a fast CUR dissolution rate and a high kinetic solubility (≈5–9× thermodynamic solubility), similar to the nanoplex suspension. While the aqueous reconstitution, CUR dissolution, and amorphous form were minimally affected by the elevated heat and humidity exposures, the treated nanoplex exhibited a lower BSA payload (≈7–26% loss) and increased protein aggregation postexposure. The adverse effects on the BSA payload and aggregation were minimized at higher sucrose mass fractions.
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Affiliation(s)
- Angeline Chua
- School of Chemistry Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637459, Singapore
| | - The-Thien Tran
- School of Chemistry Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637459, Singapore
| | - Siyu Pu
- School of Chemistry Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637459, Singapore
| | - Jin-Won Park
- School of Chemical and Biomolecular Engineering, Seoul University of Science and Technology, Seoul 01811, Korea
| | - Kunn Hadinoto
- School of Chemistry Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637459, Singapore
- Correspondence: ; Tel.: +65-6514-8381
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22
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Pharmaceutical Coating and Its Different Approaches, a Review. Polymers (Basel) 2022; 14:polym14163318. [PMID: 36015575 PMCID: PMC9415771 DOI: 10.3390/polym14163318] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/28/2022] [Accepted: 07/31/2022] [Indexed: 11/29/2022] Open
Abstract
Coating the solid dosage form, such as tablets, is considered common, but it is a critical process that provides different characteristics to tablets. It increases the value of solid dosage form, administered orally, and thus meets diverse clinical requirements. As tablet coating is a process driven by technology, it relies on advancements in coating techniques, equipment used for the coating process, evaluation of coated tablets, and coated material used. Although different techniques were employed for coating purposes, which may be based on the use of solvents or solvent-free, each of the methods used has its advantages and disadvantages, and the techniques need continued modification too. During the process of film coating, several inter-and intra-batch uniformity of coated material on the tablets is considered a critical point that ensures the worth of the final product, particularly for those drugs that contain an active medicament in the coating layer. Meanwhile, computational modeling and experimental evaluation were actively used to predict the impact of the operational parameters on the final product quality and optimize the variables in tablet coating. The efforts produced by computational modeling or experimental evaluation not only save cost in optimizing the coating process but also saves time. This review delivers a brief review on film coating in solid dosage form, which includes tablets, with a focus on the polymers and processes used in the coating. At the end, some pharmaceutical applications were also discussed.
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23
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Study on the Adsorption Performance and Adsorption Mechanism of Graphene Oxide by Red Sandstone in Aqueous Solution. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/2557107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
In order to deal with the increasingly serious pollution of graphene oxide (GO) to the environment. In this paper, the use of red sandstone to treat GO-contaminated aqueous solution is proposed for the first time, and the adsorption capacity and adsorption mechanism of red sandstone to GO are discussed. The controlled variable method was used to explore the optimal pH, concentration, and quality of red sandstone for GO aqueous solution. The adsorption isotherm, thermodynamics, and adsorption kinetics were fitted. Adsorption characterization tests were performed using XRD, AFM, XPS, FT-IR, SAP, TEM, SAP, laser particle size analyzer, and SEM. The results show that when
, the optimum adsorption condition of red sandstone for GO is
, the mass of the adsorbent is 40 mg, and when the concentration of GO is 80 mg/L, the adsorption capacity is 90 mg/g. The adsorption isotherm model fits the Langmuir model. The adsorption thermodynamic experiments and fitting results show that the reaction is endothermic. XRD and FT-IR tests showed that CaCO3 in red sandstone was involved in the adsorption of GO. SEM, TEM, and AFM microscopic results showed that GO was adsorbed on the surface of red sandstone particles. The XPS test showed that Ca2+ in red sandstone and C=O bond in GO undergo ionic or coordination reaction. The adsorption kinetics fit a pseudo-second-order kinetic model. This study will provide some references for the removal of GO in the environment and the interaction mechanism with natural minerals.
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24
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Ali NS, Jabbar NM, Alardhi SM, Majdi HS, Albayati TM. Adsorption of methyl violet dye onto a prepared bio-adsorbent from date seeds: isotherm, kinetics, and thermodynamic studies. Heliyon 2022; 8:e10276. [PMID: 36042747 PMCID: PMC9420514 DOI: 10.1016/j.heliyon.2022.e10276] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/07/2022] [Accepted: 08/09/2022] [Indexed: 11/24/2022] Open
Abstract
Raw date seeds, as prospective natural, broadly obtainable and low-price agricultural waste for adsorbing cationic dyes from aqueous solutions, have been studied. In this work, Iraqi date seeds were prepared and characterised using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and Brunauer–Emmett–Teller (BET) surface area analysis before being used as an efficient bio-adsorbent for methyl violet (MV) dye removal. Adsorption tests were conducted with three investigated parameters, namely, time of contact, first adsorbate concentration and adsorbent dose. Compared with the pseudo first-order model (coefficient of determination = 0.9001), the pseudo second-order model was determined to be the best-fitting model with a coefficient of determination (R2) of 0.9917. The equilibrium isotherms for MV were obtained, and their ultimate capacity of adsorption was (59.5 mg g1). Two isotherm models, Langmuir and Freundlich, were studied to fit the equilibrium data. Compared with the Freundlich isotherm model (R2 = 0.8154), the Langmuir model functioned better as an adsorption isotherm with R2 of 0.9837. In addition, the adsorption process was endothermic and spontaneous. The date seeds acted as active adsorbents to remove MV from the aqueous solutions in the model experiments.
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Affiliation(s)
- Nisreen S Ali
- Mustansiriyah University, College of Engineering, Materials Engineering Department, Baghdad, Iraq
| | - Noor M Jabbar
- Biochemical Engineering Department, Al-Khwarizmi Engineering College, University of Baghdad, Baghdad, Iraq
| | - Saja M Alardhi
- Nanotechnology and Advanced Materials Research Center, University of Technology, Iraq
| | - Hasan Sh Majdi
- Chemical Engineering Department and Petroleum Industries, Al-Mustaqbal University College, Babylon 51001, Iraq
| | - Talib M Albayati
- Chemical Engineering Department, University of Technology- Iraq, 52 Alsinaa St., PO Box 35010, Baghdad, Iraq
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25
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Recent Trends in Drug Delivery and Emerging Biomedical Applications of Gelatin for Ophthalmic Indications. Macromol Res 2022. [DOI: 10.1007/s13233-022-0078-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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26
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Ali NS, Alismaeel ZT, Majdi HS, Salih HG, Abdulrahman MA, Cata Saady NM, Albayati TM. Modification of SBA-15 mesoporous silica as an active heterogeneous catalyst for the hydroisomerization and hydrocracking of n-heptane. Heliyon 2022; 8:e09737. [PMID: 35756106 PMCID: PMC9218147 DOI: 10.1016/j.heliyon.2022.e09737] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/08/2022] [Accepted: 06/13/2022] [Indexed: 11/16/2022] Open
Abstract
In this study, a mesoporous SBA-15 silica catalyst was prepared and modified with encased 1% platinum (Pt) metal nanoparticles for the hydrocracking and hydroisomerization of n-heptane in a heterogeneous reaction. The textural and structural characteristics of the nanostructured silica, including both encased and non-encased nanoparticles, were measured using small-angle X-ray diffraction (XRD), nitrogen adsorption-desorption porosimetry, Brunauer–Emmett–Teller (BET) surface area analysis, Fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Catalytic testing was carried out in a plug-flow reactor under highly controlled operating conditions involving the reactant flow rate, pressure, and temperature. Gas chromatography was used to analyze the species as they left the reactor. The results demonstrated that 1% Pt/SBA-15 has a high n-heptane conversion activity (approximately 85%). Based on the results of this experimental work, there is no selectivity in the SBA-15 catalysts for isomerization products because they are inactive at the relatively low temperature that is essential for hydroisomerization. On the other hand, the SBA-15 catalysts have a considerable selectivity for products that have cracks, owing to their ability to withstand extremely high temperatures (300–400 °C) as well as the availability of Lewis acid sites within the catalyst structure.
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Affiliation(s)
- Nisreen S Ali
- Mustansiriyah University, College of Engineering, Materials Engineering Department Baghdad-Iraq, Iraq
| | - Ziad T Alismaeel
- Department of Biochemical Engineering, Al-Khwarizmi College of Engineering, University of Baghdad, Al-Jadryah, 47008, Baghdad, Iraq
| | - Hasan Sh Majdi
- Department of Chemical Engineering and Petroleum Industries, Al-Mustaqbal University College, Babylon 51001, Iraq
| | - Hussein G Salih
- Department of Chemical Engineering, University of Technology- Iraq, 52 Alsinaa St., P.O. Box 35010, Baghdad, Iraq
| | - Mahir A Abdulrahman
- Department of Chemical Engineering, University of Technology- Iraq, 52 Alsinaa St., P.O. Box 35010, Baghdad, Iraq
| | - Noori M Cata Saady
- Department of Civil Engineering, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
| | - Talib M Albayati
- Department of Chemical Engineering, University of Technology- Iraq, 52 Alsinaa St., P.O. Box 35010, Baghdad, Iraq
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Liu X, Zhang X, Chen J, Zhang C, Feng S, Zhang W. Tunable synthesis of dendritic fibrous nano silica using 1-pentanol-water microemulsion at low oil to water ratio. NANOTECHNOLOGY 2022; 33:325601. [PMID: 35487193 DOI: 10.1088/1361-6528/ac6bb0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/29/2022] [Indexed: 06/14/2023]
Abstract
Dendritic fibrous nanosilica (DFNS) is a suitable nano-carrier for loading pesticides with radially oriented pores and a large surface area. The microemulsion method is standard method to prepare DFNS, and 1-pentanol is taken to replace cyclohexane as an oil solvent due to its high stability and nontoxic property. The results showed that the volume ratio of 1-pentanol (oil) to water (O/W) and the molar ratio of hexadecyltrimethylammonium bromide (CTAB) to tetraethylorthosilicate (TEOS) had effected on morphology and adsorption properties of DFNS in the water-CTAB-1-pentanol-ethanol-trimethylbenzene (TMB) microemulsion system. DFNS with bicontinuous concentric lamellar morphologies can be synthesized in this microemulsion at the meager O/W volume ratio (0.025-0.045). It features a tight mesoporous structure with a thin dendritic fibrous in 0.03 to 0.04 O/W volume ratio. The particle sizes, surface areas, and porosity of DFNS were positively correlated with the addition of the silica precursor TEOS. The size of DFNS increased from 123 to about 220 nm with the CTAB/TEOS molar ratio decreasing from 0.119 to 0.050. When the molar ratio of CTAB to TEOS = 0.119, DFNS has a smaller particle size (123 nm) with a larger surface area and abundant honeycomb mesopores; the low O/W volume ratio strategy provides theoretical support for the industrialization development of DFNS and nano-pesticides, which plays a profound role in promoting the sustainable development of pesticide reduction, efficiency and green agriculture.
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Affiliation(s)
- Xuexue Liu
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Xiang Zhang
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Jian Chen
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Changhao Zhang
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Songke Feng
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Weiguo Zhang
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
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