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Stoski A, Machado BR, Vilsinski BH, de Carvalho LMG, Muniz EC, Almeida CAP. New Methodology for Modifying Sodium Montmorillonite Using DMSO and Ethyl Alcohol. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3029. [PMID: 38930397 PMCID: PMC11205384 DOI: 10.3390/ma17123029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024]
Abstract
Modified clays with organic molecules have many applications, such as the adsorption of pollutants, catalysts, and drug delivery systems. Different methodologies for intercalating these structures with organic moieties can be found in the literature with many purposes. In this paper, a new methodology of modifying Sodium Montmorillonite clays (Na-Mt) with a faster drying time was investigated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), BET, and thermogravimetric analysis (TG and DTG). In the modification process, a mixture of ethyl alcohol, DMSO, and Na-Mt were kept under magnetic stirring for one hour. Statistical analysis was applied to evaluate the effects of the amount of DMSO, temperature, and sonication time on the modified clay (DMSO-SMAT) using a 23-factorial design. XRD and FTIR analyses showed the DMSO intercalation into sodium montmorillonite Argel-T (SMAT). An average increase of 0.57 nm for the interplanar distance was found after swelling with DMSO intercalation. BET analysis revealed a decrease in the surface area (from 41.8933 m2/g to 2.1572 m2/g) of Na-Mt when modified with DMSO. The porosity increased from 1.74 (SMAT) to 1.87 nm (DMSO-SMAT) after the application of the methodology. Thermal analysis showed a thermal stability for the DMSO-SMAT material, and this was used to calculate the DMSO-SMAT formula of Na[Al5Mg]Si12O30(OH)6 · 0.54 DMSO. Statistical analysis showed that only the effect of the amount of DMSO was significant for increasing the interlayer space of DMSO-SMAT. In addition, at room temperature, the drying time of the sample using this methodology was 30 min.
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Affiliation(s)
- Adriana Stoski
- Interfacial Science Laboratory, Department of Chemistry, Midwestern State University, Guarapuava 85040-080, PR, Brazil;
| | - Bruno Rafael Machado
- Department of Chemistry, State University of Maringa, Maringá 87020-900, PR, Brazil; (B.R.M.); (E.C.M.)
| | - Bruno Henrique Vilsinski
- Group of Biopolymeric Materials and Composites, Department of Chemistry, Federal University of Juiz de Fora, Juiz de Fora 36036-110, MG, Brazil
| | | | - Edvani Curti Muniz
- Department of Chemistry, State University of Maringa, Maringá 87020-900, PR, Brazil; (B.R.M.); (E.C.M.)
- Department of Chemistry, Federal University of Piauí (UFPI), Teresina 64049-550, PI, Brazil;
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Wang J, Wilson RS, Aristilde L. Electrostatic coupling and water bridging in adsorption hierarchy of biomolecules at water-clay interfaces. Proc Natl Acad Sci U S A 2024; 121:e2316569121. [PMID: 38330016 PMCID: PMC10873623 DOI: 10.1073/pnas.2316569121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/18/2023] [Indexed: 02/10/2024] Open
Abstract
Clay minerals are implicated in the retention of biomolecules within organic matter in many soil environments. Spectroscopic studies have proposed several mechanisms for biomolecule adsorption on clays. Here, we employ molecular dynamics simulations to investigate these mechanisms in hydrated adsorbate conformations of montmorillonite, a smectite-type clay, with ten biomolecules of varying chemistry and structure, including sugars related to cellulose and hemicellulose, lignin-related phenolic acid, and amino acids with different functional groups. Our molecular modeling captures biomolecule-clay and biomolecule-biomolecule interactions that dictate selectivity and competition in adsorption retention and interlayer nanopore trapping, which we determine experimentally by NMR and X-ray diffraction, respectively. Specific adsorbate structures are important in facilitating the electrostatic attraction and Van der Waals energies underlying the hierarchy in biomolecule adsorption. Stabilized by a network of direct and water-bridged hydrogen bonds, favorable electrostatic interactions drive this hierarchy whereby amino acids with positively charged side chains are preferentially adsorbed on the negatively charged clay surface compared to the sugars and carboxylate-rich aromatics and amino acids. With divalent metal cations, our model adsorbate conformations illustrate hydrated metal cation bridging of carboxylate-containing biomolecules to the clay surface, thus explaining divalent cation-promoted adsorption from our experimental data. Adsorption experiments with a mixture of biomolecules reveal selective inhibition in biomolecule adsorption, which our molecular modeling attributes to electrostatic biomolecule-biomolecule pairing that is more energetically favorable than the biomolecule-clay complex. In sum, our findings highlight chemical and structural features that can inform hypotheses for predicting biomolecule adsorption at water-clay interfaces.
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Affiliation(s)
- Jiaxing Wang
- Department of Civil and Environmental Engineering, McCormick School of Engineering and Applied Science, Northwestern University, Evanston, IL60208
| | - Rebecca S. Wilson
- Department of Civil and Environmental Engineering, McCormick School of Engineering and Applied Science, Northwestern University, Evanston, IL60208
| | - Ludmilla Aristilde
- Department of Civil and Environmental Engineering, McCormick School of Engineering and Applied Science, Northwestern University, Evanston, IL60208
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Koop BL, Zenin E, Cesca K, Valencia GA, Monteiro AR. Intelligent labels manufactured by thermo-compression using starch and natural biohybrid based. Int J Biol Macromol 2022; 220:964-972. [PMID: 36007699 DOI: 10.1016/j.ijbiomac.2022.08.127] [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: 06/30/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 11/26/2022]
Abstract
This work aims to develop intelligent labels based on cassava starch and biohybrid pigments by thermo-compression. The biohybrid pigment (BH) was developed by the adsorption of anthocyanins (ACNs) extracted from the jambolan fruit (Syzygium cumini L.) into montmorillonite (Mt) in order to improve its stability. The effect of the addition of biohybrid on the physicochemical properties of the thermo-pressed starch labels was evaluated. ACNs from jambolan extract show a visible pH-dependent color-changing ability at pH 1 - 12, and the adsorption did not modify the color property. The intelligent labels presented a homogeneous surface, and the BH was well dispersed in the starch matrix. The presence of BH increased the solubility in the water of starch labels. Chemical structure characterization revealed that the BH interacted with starch matrices through hydrogen bonds. Furthermore, the thermal stability of starch labels increased with the presence of BH. Hence, the purple color of intelligent labels was preserved at high temperatures. Finally, labels containing BH show visible changes from purple to a blue color when exposed to ammonia vapor, which simulates the degradation of meat products. Thus, the label content jambolan pigments will be used to control meat deterioration.
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Affiliation(s)
- Betina Luiza Koop
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Emerson Zenin
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Karina Cesca
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Germán Ayala Valencia
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
| | - Alcilene Rodrigues Monteiro
- Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
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Kim J, Hlaing SP, Lee J, Saparbayeva A, Kim S, Hwang DS, Lee EH, Yoon IS, Yun H, Kim MS, Moon HR, Jung Y, Yoo JW. Exfoliated bentonite/alginate nanocomposite hydrogel enhances intestinal delivery of probiotics by resistance to gastric pH and on-demand disintegration. Carbohydr Polym 2021; 272:118462. [PMID: 34420722 DOI: 10.1016/j.carbpol.2021.118462] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/14/2021] [Accepted: 07/18/2021] [Indexed: 12/11/2022]
Abstract
In this study, we developed Lactobacillus rhamnosus GG (LGG)-encapsulating exfoliated bentonite/alginate nanocomposite hydrogels for protecting probiotics by delaying gastric fluid penetration into the nanocomposite and their on-demand release in the intestine. The pore size of the bentonite/alginate nanocomposite hydrogels (BA15) was two-fold smaller than that of alginate hydrogel (BA00). Following gastric pH challenge, the survival of LGG in BA15 decreased by only 1.43 log CFU/g as compared to the 6.25 log CFU/g decrease in alginate (BA00). Further, the internal pH of BA15 decreased more gradually than that of BA00. After oral administration in mice, BA15 maintained shape integrity during gastric passage, followed by appropriate disintegration within the target intestinal area. Additionally, a fecal recovery experiment in mice showed that the viable counts of LGG in BA15 were six-fold higher than those in BA00. The findings suggest the exfoliated bentonite/alginate nanocomposite hydrogel as a promising platform for intestinal delivery of probiotics.
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Affiliation(s)
- Jihyun Kim
- College of Pharmacy, Pusan National University, Busan 46241, South Korea
| | - Shwe Phyu Hlaing
- College of Pharmacy, Pusan National University, Busan 46241, South Korea
| | - Juho Lee
- College of Pharmacy, Pusan National University, Busan 46241, South Korea
| | | | - Sangsik Kim
- Department of Biosystems Engineering, The University of Arizona, Tucson, AZ 85721, United States
| | - Dong Soo Hwang
- Division of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Eun Hee Lee
- College of Pharmacy, Korea University, Sejong 30019, South Korea
| | - In-Soo Yoon
- College of Pharmacy, Pusan National University, Busan 46241, South Korea
| | - Hwayoung Yun
- College of Pharmacy, Pusan National University, Busan 46241, South Korea
| | - Min-Soo Kim
- College of Pharmacy, Pusan National University, Busan 46241, South Korea
| | - Hyung Ryong Moon
- College of Pharmacy, Pusan National University, Busan 46241, South Korea
| | - Yunjin Jung
- College of Pharmacy, Pusan National University, Busan 46241, South Korea
| | - Jin-Wook Yoo
- College of Pharmacy, Pusan National University, Busan 46241, South Korea.
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Liu R, Xia W, Otitoju TA, Wu W, Wang S, Li S, Zhang A, Chen X, Tang T, Liu J. Effect of oleic acid on improving flame retardancy of brucite in low‐density polyethylene composite. J Appl Polym Sci 2021. [DOI: 10.1002/app.51862] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Renjie Liu
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Wei Xia
- Department of Investigation Nonmetallic Mineral Industry Association of Liaoning Province Shenyang China
| | - Tunmise Ayode Otitoju
- School of Materials Science and Engineering Shenyang University of Technology Shenyang China
| | - Weidong Wu
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Song Wang
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Sanxi Li
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Ailing Zhang
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Xuecheng Chen
- Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering Shenyang University of Technology Shenyang China
| | - Tao Tang
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun China
| | - Jie Liu
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun China
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