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Liu Y, Jiang K, Qin Y, Brennan M, Brennan C, Cao J, Wang Z, Soteyome T. Prediction of the postharvest quality of Boletus wild mushrooms stored with mesoporous silica nanoparticles antibacterial film using Long Short-Term Memory model combined with the Northern Goshawk Optimization (NGO-LSTM). Food Chem 2024; 463:141490. [PMID: 39366091 DOI: 10.1016/j.foodchem.2024.141490] [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: 07/12/2024] [Revised: 09/16/2024] [Accepted: 09/28/2024] [Indexed: 10/06/2024]
Abstract
This study aimed to address the challenge of extending the shelf life of Boletus wild mushrooms, which are prone to environmental and microbial contamination. An antibacterial film composed of polylactic acid (PLA) and mesoporous silica nanoparticles loaded with citral (CMP film) was developed for this purpose. Fifteen quality indices were assessed, and the data were integrated using AHP and TOPSIS to evaluate the film's efficacy. The CMP film effectively maintained the quality of mushroom over time. Additionally, a Nonlinear Global Optimization-Long Short-Term Memory (NGO-LSTM) model was employed to predict storage quality, using seven highly correlated quality indicators. The model achieved a high predictive accuracy, with the R2 exceeding 0.999. This study presents a novel packaging solution and a predictive model that together enhance the storage and quality control of Boletus wild mushrooms.
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Affiliation(s)
- Yudi Liu
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650550, China
| | - Kai Jiang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650550, China
| | - Yuyue Qin
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650550, China.
| | - Margaret Brennan
- School of Science, Royal Melbourne Institute of Technology University, Melbourne 3000, Australia
| | - Charles Brennan
- School of Science, Royal Melbourne Institute of Technology University, Melbourne 3000, Australia.
| | - Jianxin Cao
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650550, China; Yunnan International Joint Laboratory of Green Food Processing, Kunming 650500, China
| | - Zhengxuan Wang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650550, China; Yunnan International Joint Laboratory of Green Food Processing, Kunming 650500, China
| | - Thanapop Soteyome
- Rajamangala University of Technology Phra Nakhon, Bangkok 10300, Thailand
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Hardian R, Jia J, Diaz-Marquez A, Naskar S, Fan D, Shekhah O, Maurin G, Eddaoudi M, Szekely G. Design of Mixed-Matrix MOF Membranes with Asymmetric Filler Density and Intrinsic MOF/Polymer Compatibility for Enhanced Molecular Sieving. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2314206. [PMID: 38517323 DOI: 10.1002/adma.202314206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/03/2024] [Indexed: 03/23/2024]
Abstract
The separation of high-value-added chemicals from organic solvents is important for many industries. Membrane-based nanofiltration offers a more energy-efficient separation than the conventional thermal processes. Conceivably, mixed-matrix membranes (MMMs), encompassing metal-organic frameworks (MOFs) as fillers, are poised to promote selective separation via molecular sieving, synergistically combining polymers flexibility and fine-tuned porosity of MOFs. Nevertheless, conventional direct mixing of MOFs with polymer solutions results in underutilization of the MOF fillers owing to their uniform cross-sectional distribution. Therefore, in this work, a multizoning technique is proposed to produce MMMs with an asymmetric-filler density, in which the MOF fillers are distributed only on the surface of the membrane, and a seamless interface at the nanoscale. The design strategy demonstrates five times higher MOF surface coverage, which results in a solvent permeance five times higher than that of conventional MMMs while maintaining high selectivity. Practically, MOFs are paired with polymers of similar chemical nature to enhance their adhesion without the need for surface modification. The approach offers permanently accessible MOF porosity, which translates to effective molecular sieving, as exemplified by the polybenzimidazole and Zr-BI-fcu-MOF system. The findings pave the way for the development of composite materials with a seamless interface.
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Affiliation(s)
- Rifan Hardian
- Advanced Membranes & Porous Materials Center, Physical Sciences and Engineering Division (PSE), Sustainable Separation Engineering Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Jiangtao Jia
- Advanced Membranes & Porous Materials Center, Physical Sciences and Engineering Division (PSE), Functional Materials Design Discovery, and Development Laboratory (FMD3), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | | | - Supriyo Naskar
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, 34293, France
| | - Dong Fan
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, 34293, France
| | - Osama Shekhah
- Advanced Membranes & Porous Materials Center, Physical Sciences and Engineering Division (PSE), Functional Materials Design Discovery, and Development Laboratory (FMD3), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Guillaume Maurin
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, 34293, France
| | - Mohamed Eddaoudi
- Advanced Membranes & Porous Materials Center, Physical Sciences and Engineering Division (PSE), Functional Materials Design Discovery, and Development Laboratory (FMD3), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Chemical Science Program, Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Gyorgy Szekely
- Advanced Membranes & Porous Materials Center, Physical Sciences and Engineering Division (PSE), Sustainable Separation Engineering Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Chemical Engineering Program, Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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Mochizuki T, Sampei S, Suga K, Watanabe K, Welling TAJ, Nagao D. A Quantitative Approach to Characterize the Surface Modification on Nanoparticles Based on Localized Dielectric Environments. Anal Chem 2024; 96:3284-3290. [PMID: 38355104 PMCID: PMC10902806 DOI: 10.1021/acs.analchem.3c03593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Nanoparticles (NPs) are utilized for the functionalization of composite materials and nanofluids. Although oxide NPs (e.g., silica (SiO2)) exhibit less dispersibility in organic solvents or polymers due to their hydrophilic surface, the surface modification using silane coupling agents can improve their dispersibility in media with low dielectric constants. Herein, SiO2 NPs were functionalized using octyltriethoxysilane (OTES, C8) and dodecyltriethoxysilane (DTES, C12), wherein the degrees of surface modification of SiO2@C8 and SiO2@C12 were quantitatively evaluated based on the ratio of modifier to surface silanol group (θ) and the volume fraction of organic modifier to total particle volume (ϕR). The variations of surface properties were revealed by analyzing the Hansen solubility parameters (HSP). Particularly, the surface modification using OTES or DTES significantly affected the polarity (δP) of NPs. The local dielectric environments of surface-modified SiO2 NPs were characterized using a solvatochromic dye, Laurdan. By analyzing the peak position of the steady-state emission spectrum of Laurdan in a NP suspension, the apparent dielectric environments surrounding NPs (εapp) were obtained. A good correlation between ϕR and εapp was observed, indicating that ϕR is a reliable quantity for understanding the properties of surface-modified NPs. Furthermore, the generalized polarization (GP) of NPs was investigated. The surface-modified SiO2 NPs with higher ϕR (≥0.15) exhibited GP > 0, suggesting that the modifiers are well-organized on the surface of NPs. The localized dielectric environment surrounding NPs could be predicted by analyzing the volume fraction of nonpolar moieties derived from modifiers. Alternatively, εapp and GP can be utilized for understanding the properties of inorganic-organic hybrid NPs.
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Affiliation(s)
- Taketo Mochizuki
- Department of Chemical Engineering, Tohoku University, Sendai, Miyagi 9808579, Japan
| | - Shota Sampei
- Department of Chemical Engineering, Tohoku University, Sendai, Miyagi 9808579, Japan
| | - Keishi Suga
- Department of Chemical Engineering, Tohoku University, Sendai, Miyagi 9808579, Japan
| | - Kanako Watanabe
- Department of Chemical Engineering, Tohoku University, Sendai, Miyagi 9808579, Japan
| | - Tom A J Welling
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, Miyagi 9808578, Japan
| | - Daisuke Nagao
- Department of Chemical Engineering, Tohoku University, Sendai, Miyagi 9808579, Japan
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Nguyen QM, Hutchison P, Palombo E, Yu A, Kingshott P. Antibiofilm Activity of Eugenol-Loaded Chitosan Coatings against Common Medical-Device-Contaminating Bacteria. ACS APPLIED BIO MATERIALS 2024; 7:918-935. [PMID: 38275187 DOI: 10.1021/acsabm.3c00949] [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] [Indexed: 01/27/2024]
Abstract
The formation of pathogenic biofilms on medical devices is a major public health concern accounting for over 65% of healthcare-associated infections and causing high infection morbidity, mortality, and a great burden to patients and the healthcare system due to its resistance to treatment. In this study, we developed a chitosan-based antimicrobial coating with embedded mesoporous silica nanoparticles (MSNs) to load and deliver eugenol, an essential oil component, to inhibit the biofilm formation of common bacteria in medical-device-related infections. The eugenol-loaded MSNs were dispersed in a chitosan solution, which was then cross-linked with glutaraldehyde and drop-casted to obtain coatings. The MSNs and coatings were characterized by dynamic light scattering, Brunauer-Emmett-Teller analysis, attenuated-total-reflectance Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, 3D optical profilometry, and scanning electron microscopy. The release behavior of eugenol-loaded MSNs and coatings and the antibiofilm and antimicrobial activity of the coatings against adherent Staphylococcus aureus, methicillin-resistant S. aureus, and Pseudomonas aeruginosa were investigated. Eugenol was released from the MSNs and coatings in aqueous conditions in a controlled manner with an initial low release, followed by a peak release, a decrease, and a plateau. While the chitosan coatings alone or with unloaded MSNs demonstrated limited antimicrobial effects and still supported biofilm formation after 24 h, the coating containing eugenol not only reduced biofilm formation but also killed the majority of the attached bacteria. It also showed biocompatibility in indirect contact with NIH/3T3 fibroblasts and a high percentage of live cells in direct contact. However, further investigations into cell proliferation in direct contact are recommended. The findings indicated that the chitosan-based coating with eugenol-loaded MSNs could be developed into an effective strategy to inhibit biofilm formation on medical devices.
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Affiliation(s)
- Quang Minh Nguyen
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Peter Hutchison
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Enzo Palombo
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Aimin Yu
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Peter Kingshott
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- ARC Training Centre in Surface Engineering for Advanced Materials, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
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Cui Y, Dong X, Jiang Z, Suo Y, Zhang W, Wang Y. Study on the preparation and n-heptane isomerization performance of MoO x-Pd/Ce-MCM-48 catalyst. RSC Adv 2024; 14:4105-4115. [PMID: 38292263 PMCID: PMC10825628 DOI: 10.1039/d3ra08454j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 01/22/2024] [Indexed: 02/01/2024] Open
Abstract
A Ce-MCM-48 molecular sieve was prepared by the hydrothermal synthesis method. Using Ce-MCM-48 as the support, a series of MoOx Pd/Ce-M catalysts were prepared by the impregnation method by introducing MoOx and Pd. XRD, N2 adsorption desorption, SEM, TEM, NH3-TPD, Py-IR, FT-IR, and ICP-MS were used to characterize the physicochemical properties. The performance of n-heptane isomerization in a micro fixed bed device was evaluated. The results showed that the synthesized Ce-MCM-48 was mesoporous, with a spherical particle morphology, a long-range ordered pore structure, weakly acidic sites on the surface, and an increase of B and L acids. The 2% MoOx-Pd/Ce-M catalyst was used for the probe reaction of n-heptane hydroisomerization; when the reduction temperature was 400 °C, the reduction time was 2 hours, the reaction temperature was 300 °C, the WHSV was 7.6 h-1, the conversion rate was 58.7%, the selectivity was 91.2%, and the maximum yield was 53.5%. The product distribution of multiple C7 isomers increased the selectivity of multi branched isoheptane. The addition of an appropriate amount of MoOx would improve the performance of n-heptane isomerization.
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Affiliation(s)
- Yanhong Cui
- College of Chemistry and Chemical Engineering, Northeast Petroleum University Daqing 163318 China
- National Coarse Cereals Engineering Research Center, Heilongjiang Bayi Agricultural University/Quality Supervision, Inspection and Test Center of Agricultural and Processed Products (Daqing), Ministry of Agriculture and Rural Affairs Daqing 163319 China
| | - Xiuli Dong
- College of Chemistry and Chemical Engineering, Northeast Petroleum University Daqing 163318 China
| | - Zhen Jiang
- College of Chemistry and Chemical Engineering, Northeast Petroleum University Daqing 163318 China
| | - Yanhua Suo
- College of Chemistry and Chemical Engineering, Northeast Petroleum University Daqing 163318 China
| | - Wei Zhang
- College of Chemistry and Chemical Engineering, Northeast Petroleum University Daqing 163318 China
| | - Yingjun Wang
- College of Chemistry and Chemical Engineering, Northeast Petroleum University Daqing 163318 China
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Polak D, Szwast M. Material and Process Tests of Heterogeneous Membranes Containing ZIF-8, SiO 2 and POSS-Ph. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6455. [PMID: 36143769 PMCID: PMC9504719 DOI: 10.3390/ma15186455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Heterogeneous membranes made of a polymer matrix and containing nano-metric fillers in their structure may present improved physicochemical and process properties compared to homogeneous membranes made only of polymer materials. Membranes made of a PEBAX®2533 block copolymer were tested with fillers such as ZIF-8, SiO2 and POSS-Ph being dosed to them. The material analysis and process tests indicate that these nanomaterials can be used as fillers for heterogeneous membranes. Chemometric analyses determined the influence of individual fillers on selected physicochemical properties of the materials which were used to produce the membranes. For specific concentrations of these fillers, improvement in the permeability and selectivity of the membranes, or at least in one of these parameters, was achieved. The greatest increase in permeability against the homogeneous membrane was obtained for membranes containing 10 wt% ZIF-8 (for CO2, an increase of 2.07 times; for CH4, 2.36 times; for N2, 3.08 times). In turn, the greatest increase in selectivity was obtained for the CO2/CH4 mixture for the membrane containing 5 wt% SiO2 (1.15 times), and for the CO2/N2 mixture for the membrane containing 2 wt% POSS-Ph (1.21 times).
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Chen W, Wu Z, Wang Z, Chen C, Zhang Z. Preparation of a reusable and pore size controllable porous polymer monolith and its catalysis of biodiesel synthesis. RSC Adv 2022; 12:12363-12370. [PMID: 35480381 PMCID: PMC9036607 DOI: 10.1039/d2ra01610a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/15/2022] [Indexed: 11/21/2022] Open
Abstract
A sulfonated porous polymer monolith (PPM-SO3H) has been prepared via the polymerisation of styrene (St) and divinyl benzene (DVB) with organic microspheres as pore-forming agents, followed by sulfonation with concentrated sulfuric acid. It was characterized by acid-base titration in order to determine its acid density, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, mercury intrusion porosimetry (MIP) and thermogravimetric analysis (TG). The PPM-SO3H showed an acid density of 1.89 mmol g-1 and pore cavities with an average diameter of 870 nm. The catalytic activity of PPM-SO3H in practical biodiesel synthesis from waste fatty acids was investigated and the main reaction parameters were optimized through orthogonal experiment. The best reaction conditions obtained for the optimization of methanol to oil ratio, catalyst concentration, reaction temperature and reaction time were 1 : 1, 20%, 80 °C and 8 h, respectively. PPM-SO3H showed excellent catalytic activity. In biodiesel synthesis, the esterification rate of PPM-SO3H is 96.9%, which is much higher than that of commercial poly(sodium-p-styrenesulfonate) (esterification rate 29.0%). The PPM-SO3H can be reused several times without significant loss of catalytic activity; the esterification rate was still 90.8% after 6 cycles. The pore size of this porous polymer monolith can be controlled. The dimension and shape of this porous polymer monolith were also adjustable by choosing a suitable polymerisation container.
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Affiliation(s)
- Weiqing Chen
- College of Chemical Engineering, Hebei Normal University of Science and Technology Qinhuangdao 066600 China
| | - Zhaoji Wu
- College of Chemical Engineering, Hebei Normal University of Science and Technology Qinhuangdao 066600 China
| | - Zhengge Wang
- College of Chemical Engineering, Hebei Normal University of Science and Technology Qinhuangdao 066600 China
| | - Changjiu Chen
- College of Chemical Engineering, Hebei Normal University of Science and Technology Qinhuangdao 066600 China
| | - Zhigang Zhang
- College of Chemical Engineering, Hebei Normal University of Science and Technology Qinhuangdao 066600 China
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