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Singh P, Verma C, Gupta A, Mukhopadhyay S, Gupta B. Development of κ-carrageenan-PEG/lecithin bioactive hydrogel membranes for antibacterial adhesion and painless detachment. Int J Biol Macromol 2023; 247:125789. [PMID: 37437679 DOI: 10.1016/j.ijbiomac.2023.125789] [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: 05/22/2023] [Revised: 07/05/2023] [Accepted: 07/09/2023] [Indexed: 07/14/2023]
Abstract
The issue of wound dressing adherence poses a substantial challenge in the field of wound care, with implications both clinically and economically. Overcoming this challenge requires the development of a hydrogel dressing that enables painless removal without causing any secondary damage. However, addressing this issue still remains a significant challenge that requires attention and further exploration. The present study is focused on the synthesis of hydrogel membranes based on κ-carrageenan (CG), polyethylene glycol (PEG), and soy lecithin (LC), which can provide superior antioxidant and antibacterial attachment properties with a tissue anti adhesion activity for allowing an easy removability without causing secondary damage. The (CG-PEG)/LC mass ratio was varied to fabricate hydrogel membranes via a facile approach of physical blending and solution casting. The physicochemical properties of (CG-PEG)/LC hydrogel membranes were studied by scanning electron microscopy (SEM), Fourier transforms infrared spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and mechanical analyses. The membranes showed significantly enhanced mechanical properties with excellent flexibility and had high swelling capacity (˃1000 %), which would provide a moist condition for wound healing. The membranes also exhibited excellent free radical scavenging ability (>60 %). In addition, the (CG-PEG)/LC hydrogel membranes showed reduced peel strength 26.5 N/m as a result of weakening the hydrogel-gelatin interface during an in vitro gelatin peeling test. Moreover, the membrane showed superior antibacterial adhesion activity (>90 %) against both S. aureus and E. coli due to the presence of both PEG and LC. The results also suggested that the hydrogel membranes exhibit NIH3T3 cell antiadhesion property, making them promising material for easy detachment from the healed tissue without causing secondary damage. Thus, this novel combination of (CG-PEG)/LC hydrogel membranes have immense application potential as a biomaterial in the healthcare sector.
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Affiliation(s)
- Pratibha Singh
- Bioengineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Chetna Verma
- Bioengineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Amlan Gupta
- Department of Pathology, Sikkim Manipal Institute of Medical Sciences, Tadong, Gangtok, Sikkim 737102, India
| | - Samrat Mukhopadhyay
- Bioengineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Bhuvanesh Gupta
- Bioengineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
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Ali EA, Abo-Salem HM, Arafa AA, Nada AA. Chitosan Schiff base electrospun fabrication and molecular docking assessment for nonleaching antibacterial nanocomposite production. CELLULOSE (LONDON, ENGLAND) 2023; 30:3505-3522. [PMID: 36994234 PMCID: PMC10015525 DOI: 10.1007/s10570-023-05124-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
In this work, new chitosan derivative nanofibers that exhibit antibacterial properties were successfully fabricated. The two CS Schiff base derivatives (CS-APC and CS-2APC) were prepared by incorporating 4-amino antipyrine moiety in two different ratios, followed by a reductive amination to obtain the corresponding derivatives CS-APCR and CS-2APCR. Spectral analyses were used to confirm the chemical structure. The molecular docking evaluation of CS-APC, CS-APCR, and CS was conducted on DNA topoisomerase IV, thymidylate kinase and SARS-CoV-2 main protease (3CLpro) active sites. CS-APCR showed a well-fitting into the three enzyme active sites with docking score values of - 32.76, - 35.43 and - 30.12 kcal/mol, respectively. The nanocomposites of CS derivatives were obtained by electrospinning the blends of CS-2APC and CS-2APCR with polyvinyl pyrrolidone (PVP) at 20 kV. The morphology of the nanofibers was investigated by scanning electron microscopy (SEM). It was found that fiber diameters were significantly decreased when CS-2APC and CS-2APCR were incorporated into pure PVP to reach 206-296 nm and 146-170 nm, respectively, compared to 224-332 nm for pure PVP. The derivatives of CS and their nanofibers with PVP were found to have antibacterial activities against two strains of Staphylococcus aureus and Escherichia coli. Data revealed that CS-2APC nanofibers showed antibacterial activity to the two strains of E. coli less than CS-2APCR nanofibers.
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Affiliation(s)
- Eman AboBakr Ali
- Polymer and Pigment Department, Chemical Industries Research Institute, National Research Centre (Scopus Affiliation ID 60014618), Dokki, Giza, 12622 Egypt
| | - Heba M. Abo-Salem
- Chemistry of Natural Compounds Department, Pharmaceutical and Drug Research Institute, National Research Centre, Dokki, Giza, 12622 Egypt
| | - Amany A. Arafa
- Microbiology and Immunology Department, Veterinary Research Institute, National Research Centre, Dokki, Giza, 12622 Egypt
| | - Ahmed A. Nada
- Pre-treatment and Finishing of Cellulosic Fibers Department, Textile Industries Research Institute, National Research Centre, Dokki, Giza, 12622 Egypt
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Research Progress of Water Treatment Technology Based on Nanofiber Membranes. Polymers (Basel) 2023; 15:polym15030741. [PMID: 36772042 PMCID: PMC9920505 DOI: 10.3390/polym15030741] [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: 01/03/2023] [Revised: 01/25/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023] Open
Abstract
In the field of water purification, membrane separation technology plays a significant role. Electrospinning has emerged as a primary method to produce nanofiber membranes due to its straightforward, low cost, functional diversity, and process controllability. It is possible to flexibly control the structural characteristics of electrospun nanofiber membranes as well as carry out various membrane material combinations to make full use of their various properties, including high porosity, high selectivity, and microporous permeability to obtain high-performance water treatment membranes. These water separation membranes can satisfy the fast and efficient purification requirements in different water purification applications due to their high filtration efficiency. The current research on water treatment membranes is still focused on creating high-permeability membranes with outstanding selectivity, remarkable antifouling performance, superior physical and chemical performance, and long-term stability. This paper reviewed the preparation methods and properties of electrospun nanofiber membranes for water treatment in various fields, including microfiltration, ultrafiltration, nanofiltration, reverse osmosis, forward osmosis, and other special applications. Lastly, various antifouling technologies and research progress of water treatment membranes were discussed, and the future development direction of electrospun nanofiber membranes for water treatment was also presented.
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Wang L, Zhu T, Kang Y, Zhang J, Du J, Gao H, Chen S, Jiang J, Zhao J. Crimped nanofiber scaffold mimicking tendon-to-bone interface for fatty-infiltrated massive rotator cuff repair. Bioact Mater 2022; 16:149-161. [PMID: 35386329 PMCID: PMC8958472 DOI: 10.1016/j.bioactmat.2022.01.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 12/11/2022] Open
Abstract
Electrospun fibers, with proven ability to promote tissue regeneration, are widely being explored for rotator cuff repairing. However, without post treatment, the microstructure of the electrospun scaffold is vastly different from that of natural extracellular matrix (ECM). Moreover, during mechanical loading, the nanofibers slip that hampers the proliferation and differentiation of migrating stem cells. Here, electrospun nanofiber scaffolds, with crimped nanofibers and welded joints to biomimic the intricate natural microstructure of tendon-to-bone insertion, were prepared using poly(ester-urethane)urea and gelatin via electrospinning and double crosslinking by a multi-bonding network densification strategy. The crimped nanofiber scaffold (CNS) features bionic tensile stress and induces chondrogenic differentiation, laying credible basis for in vivo experimentation. After repairing a rabbit massive rotator cuff tear using a CNS for 3 months, the continuous translational tendon-to-bone interface was fully regenerated, and fatty infiltration was simultaneously inhibited. Instead of micro-CT, μCT was employed to visualize the integrity and intricateness of the three-dimensional microstructure of the CNS-induced-healed tendon-to-bone interface at an ultra-high resolution of less than 1 μm. This study sheds light on the correlation between nanofiber post treatment and massive rotator cuff repair and provides a general strategy for crimped nanofiber preparation and tendon-to-bone interface imaging characterization. Electrospun scaffold mimicking the microstructure of ECM was fabricated. The translational microstructure of tendon-to-bone interface was regenerated. Tendon-to-bone interface was 3D visualized with resolution less than 1 μm. Muscle fatty infiltration was inhibited for massive rotator cuff tear.
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Affiliation(s)
- Liren Wang
- Department of Sports Medicine, Department of Orthopedics, Shanghai Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yishan Road, Shanghai, 200233, China.,Regenerative Sports Medicine and Translational Youth Science and Technology Innovation Workroom, Shanghai Jiao Tong University School of Medicine, No. 227 South Chongqing Road, Shanghai, 200025, China
| | - Tonghe Zhu
- Department of Sports Medicine, Department of Orthopedics, Shanghai Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yishan Road, Shanghai, 200233, China
| | - Yuhao Kang
- Department of Sports Medicine, Department of Orthopedics, Shanghai Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yishan Road, Shanghai, 200233, China.,Regenerative Sports Medicine and Translational Youth Science and Technology Innovation Workroom, Shanghai Jiao Tong University School of Medicine, No. 227 South Chongqing Road, Shanghai, 200025, China
| | - Jianguang Zhang
- Department of Medgen Group Research Laboratory, 18 Qinglan 3 Rd, Shenzhen, 518118, China
| | - Juan Du
- Biofunctional Materials Research Group, College of Chemistry and Chemical Engineering, Multidisciplinary Center for Advanced Materials, Institute of Advanced Studies, Shanghai University of Engineering Science, No. 333 Longteng Rd, Shanghai, 201620, China
| | - Haihan Gao
- Biofunctional Materials Research Group, College of Chemistry and Chemical Engineering, Multidisciplinary Center for Advanced Materials, Institute of Advanced Studies, Shanghai University of Engineering Science, No. 333 Longteng Rd, Shanghai, 201620, China.,Shanghai Jiao Tong University School of Medicine, No. 227 South Chongqing Road, Shanghai, 200025, China
| | - Sihao Chen
- Biofunctional Materials Research Group, College of Chemistry and Chemical Engineering, Multidisciplinary Center for Advanced Materials, Institute of Advanced Studies, Shanghai University of Engineering Science, No. 333 Longteng Rd, Shanghai, 201620, China
| | - Jia Jiang
- Department of Sports Medicine, Department of Orthopedics, Shanghai Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yishan Road, Shanghai, 200233, China.,Regenerative Sports Medicine Lab of the Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People' Hospital, No. 600 Yishan Road, Shanghai, 200233, China
| | - Jinzhong Zhao
- Department of Sports Medicine, Department of Orthopedics, Shanghai Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yishan Road, Shanghai, 200233, China.,Regenerative Sports Medicine Lab of the Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People' Hospital, No. 600 Yishan Road, Shanghai, 200233, China
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Fan Q, Wu H, Kong Q. Superhydrophilic PLGA-Graft-PVP/PC Nanofiber Membranes for the Prevention of Epidural Adhesion. Int J Nanomedicine 2022; 17:1423-1435. [PMID: 35369033 PMCID: PMC8964670 DOI: 10.2147/ijn.s356250] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/15/2022] [Indexed: 12/05/2022] Open
Abstract
Background The frequent occurrence of failed back surgery syndrome (FBSS) seriously affects the quality of life of postoperative lumbar patients. Epidural adhesion is the major factor in FBSS. Purpose A safe and effective antiadhesion material is urgently needed. Methods A superhydrophilic PLGA-g-PVP/PC nanofiber membrane (NFm) was prepared by electrospinning. FTIR was performed to identify its successful synthesis. Scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry, and water contact angle measurement were performed. CCK-8 assays were performed in primary rabbit fibroblasts (PRFs) and RAW264.7 cells to explore the cytotoxicity of PLGA-g-PVP/PC NFm. Calcein-AM/PI staining was used to measure the adhesion status in PRFs. ELISA was performed to measure the concentrations of TNF-α and IL-10 in RAW264.7 cells. In addition, the anti-epidural adhesion efficacy of the PLGA-g-PVP/PC NFm was determined in a rabbit model of lumbar laminectomy. Results The PLGA-g-PVP/PC NFm exhibited ultrastrong hydrophilicity and an appropriate degradation rate. Based on the results of the CCK-8 assays, PLGA-g-PVP/PC NFm had no cytotoxicity to PRFs and RAW264.7 cells. Calcein-AM/PI staining showed that PLGA-g-PVP/PC NFm could inhibit PRF adhesion. ELISAs showed that PLGA-g-PVP/PC NFm could attenuate lipopolysaccharide-induced macrophage activation. In vivo experiments further confirmed the favorable anti-epidural adhesion effect of PLGA-g-PVP/PC NFm and the lack of a strong inflammatory response. Conclusion In this study, PLGA-g-PVP/PC NFm was developed successfully to provide a safe and effective physical barrier for preventing epidural adhesion. PLGA-g-PVP/PC NFm provides a promising strategy for preventing postoperative adhesion and has potential for clinical translation.
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Affiliation(s)
- Qingxin Fan
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, People’s Republic of China
| | - Hao Wu
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, People’s Republic of China
- Department of Orthopedics, The Second Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China
| | - Qingquan Kong
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, People’s Republic of China
- Correspondence: Qingquan Kong, Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, People’s Republic of China, Email
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Investigation of the Morphological Structure of Needle-Free Electrospun Magnetic Nanofiber Mats. MAGNETOCHEMISTRY 2022. [DOI: 10.3390/magnetochemistry8020025] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Electrospun magnetic nanofibers are promising for a variety of applications in biomedicine, energy storage, filtration or spintronics. The surface morphology of nanofiber mats plays an important role for defined application areas. In addition, the distribution of magnetic particles in nanofibers exerts an influence on the final properties of nanofiber mats. A simple method for the production of magnetic nanofiber mats by the addition of magnetic nanoparticles in an electrospinning polymer solution was used in this study. In this work, magnetic nanofibers (MNFs) were prepared by needle-free electrospinning technique from poly(acrylonitrile) (PAN) in the low-toxic solvent dimethylsulfoxide (DMSO) and 20 wt% Fe3O4 at different parameter conditions such as PAN concentration, voltage and ultrasonic bath. The distribution of nanoparticles in the fiber matrix was investigated as well as the chemical and morphological properties of the resulting magnetic nanofibers. In addition, the surface morphology of magnetic nanofiber mats was studied by confocal laser scanning microscope (CLSM), scanning electron microscope (SEM), Fourier transform infrared microscope (FTIR) and ImageJ software, and distribution of Fe3O4 particles in the matrix was investigated by energy dispersive X-ray spectroscopy (EDX).
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Babadi D, Rabbani S, Akhlaghi S, Haeri A. Curcumin polymeric membranes for postoperative peritoneal adhesion: Comparison of nanofiber vs. film and phospholipid-enriched vs. non-enriched formulations. Int J Pharm 2022; 614:121434. [PMID: 34995747 DOI: 10.1016/j.ijpharm.2021.121434] [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: 08/29/2021] [Revised: 12/15/2021] [Accepted: 12/23/2021] [Indexed: 12/08/2022]
Abstract
Intra-abdominal adhesion remains a major postoperative problem and is able to place individuals at lifelong risk of serious complications. Among available approaches, insertion of a barrier membrane at the site of injury partially inhibited adhesion formation. Moreover, the local administration of an anti-adhesive agent showed some favorable effects. In this study, we aimed to prepare and fully characterize polycaprolactone (PCL)-based film casts and electrospun nanofibers (NFs) containing a natural anti-inflammatory agent, curcumin (CUR), with extended-release properties. We also compared their efficiencies in preventing tissue adhesions. Additionally, the impact of soy phosphatidylcholine (SPC) enrichment on adhesion prevention was investigated. Prepared membranes were evaluated in terms of surface morphology (SEM, AFM), surface wettability, CUR release profiles, structural properties (FTIR, XRD, DSC), and mechanical behaviors. To further analyze the anti-adhesion effectiveness, a cecal abrasion model was performed on rats. SEM and AFM images showed a smoother surface in SPC-containing films. Concerning NFs, uniform bead-free fibers were observed and SPC containing NFs showed higher conductivity and lower viscosity and therefore, smaller fibers. All formulations exhibited sustained drug release over 4 weeks. In vivo findings revealed the superior performance of films compared to NFs and phospholipid-enriched formulations over non-enriched ones. Among all film formulations and in comparison to the positive control (Seprafilm®), CUR-SPC-PCL films significantly reduced peritoneal adhesions, as evidenced by gross examination, histological evaluation and immunohistochemical (IHC) analysis. The remarkable in vivo anti-adhesion activity together with suitable in vitro properties have made CUR-SPC-PCL films a promising system for postoperative anti-adhesion purposes in the clinic.
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Affiliation(s)
- Delaram Babadi
- Department of Pharmaceutics, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahram Rabbani
- Research Center for Advanced Technologies in Cardiovascular Medicine, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Sarah Akhlaghi
- Department of Pharmaceutics, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Azadeh Haeri
- Department of Pharmaceutics, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Protein Technology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Debnath B, Haldar D, Purkait MK. A critical review on the techniques used for the synthesis and applications of crystalline cellulose derived from agricultural wastes and forest residues. Carbohydr Polym 2021; 273:118537. [PMID: 34560949 DOI: 10.1016/j.carbpol.2021.118537] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/12/2021] [Accepted: 08/02/2021] [Indexed: 12/20/2022]
Abstract
In order to meet the growing energy crisis of the 21st century, the utilization of bio-based materials has become a field of high research endeavour. In view of that, the present review paper is focused on different techniques that are frequently explored for the synthesis of value-added crystalline derivatives of cellulose like MCC and NCC from agricultural wastes and forest residues. Moreover, a comparative analysis between thermochemical and biochemical methods is carried out for such valorization of biomass considering the mechanism involved with various reactions. Further, a critical analysis is performed on various individual techniques specifically used for the applications of MCC and NCC in different fields including environmental, polymer industry, pharmaceutical and other emerging sectors. This article will assist the readers not only to explore new biomass sources but also provides an in-depth insight on various green and cost-effective methods for sustainable production of crystalline cellulose.
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Affiliation(s)
- Banhisikha Debnath
- Centre for the Environment, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Dibyajyoti Haldar
- Centre for the Environment, Indian Institute of Technology Guwahati, Assam 781039, India.
| | - Mihir Kumar Purkait
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India.
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Ali EA, Nada AA, Al-Moghazy M. Self-stick membrane based on grafted gum Arabic as active food packaging for cheese using cinnamon extract. Int J Biol Macromol 2021; 189:114-123. [PMID: 34418416 DOI: 10.1016/j.ijbiomac.2021.08.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 07/21/2021] [Accepted: 08/09/2021] [Indexed: 10/20/2022]
Abstract
Encapsulation of volatile essential oils has been investigated to provide an active food packaging (AFP) material with more control over their fast release and pungent smell. In this work, Gum Arabic-based adhesive membrane was developed as a self-stick AFP material, delivering cinnamon essential oil (CEO) in vapor phase. Gum Arabic (GA) was grafted with butyl acrylate (BA) and hydroxyethyl methacrylate [GA-g-poly(BA-HEMA)]. Adhesive membrane was characterized by means of spectral, physicochemical and rheological analysis. GA-adhesive membrane made of 5% wt/v GA, 3.5 m mol HEMA, and 87 m mol BA with 21 N/m tack are loaded with 4, 8 and 10% v/v of CEO and used for antimicrobial bioassays. GA-g-poly(BA-HEMA) membrane prolonged CEO release up to 2 days. 8%v/v CEO showed superior activities against both Gram negative and positive bacteria. Shelf-life of cheese samples, packed with the self-stick membranes loaded with cinnamon extract, has extended from 3 to 8 weeks. Cheese samples that inoculated with shiga toxin producing E. coli O157:H7 and packed in plastic boxes with the self-stick AFP (4, 8 and 10 % CEO), showed significant reduction in the total bacteria counts.
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Affiliation(s)
- Eman AboBakr Ali
- Polymers & Pigments Department, Chemical Industries Research Division, National Research Centre, Dokki, Giza 12211, Egypt
| | - Ahmed A Nada
- Pre-treatment and Finishing of Cellulosic Fibers Department, Textile Research Division, National Research Centre (Scopus Affiliation ID 60014618), Dokki, Giza 12211, Egypt.
| | - Marwa Al-Moghazy
- Dairy Science Department, Food Industries and Nutrition Research Division, National Research Centre, Dokki, Giza 12211, Egypt
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Edible packaging coating of encapsulated thyme essential oil in liposomal chitosan emulsions to improve the shelf life of Karish cheese. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101230] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Ribeiro ES, de Farias BS, Sant'Anna Cadaval Junior TR, de Almeida Pinto LA, Diaz PS. Chitosan-based nanofibers for enzyme immobilization. Int J Biol Macromol 2021; 183:1959-1970. [PMID: 34090851 DOI: 10.1016/j.ijbiomac.2021.05.214] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/20/2021] [Accepted: 05/31/2021] [Indexed: 12/13/2022]
Abstract
The widespread application of soluble enzymes in industrial processes is considered restrict due to instability of enzymes outside optimum operating conditions. For instance, enzyme immobilization can overcome this issue. In fact, chitosan-based nanofibers have outstanding properties, which can improve the efficiency in enzyme immobilization and the stability of enzymes over a wide range of operating conditions. These properties include biodegradability, antimicrobial activity, non-toxicity, presence of functional groups (amino and hydroxyl), large surface area to volume ratio, enhanced porosity and mechanical properties, easy separations and reusability. Therefore, the present review explores the advantages and drawbacks concerning the different methods of enzyme immobilization, including adsorption, cross-linking and entrapment. All these strategies have questions that still need to be addressed, such as elucidation of adsorption mechanism (physisorption or chemisorption); effect of cross-linking reaction on intramolecular and intermolecular interactions and the effect of internal and external diffusional limitations on entrapment of enzymes. Moreover, the current review discusses the challenges and prospects regarding the application of chitosan-based nanofibers in enzyme immobilization, towards maximizing catalytic activity and lifetime.
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Affiliation(s)
- Eduardo Silveira Ribeiro
- Biotechnology Unit, Technology Development Center, Federal University of Pelotas, Campus Capão do Leão, Capão do Leão, Brazil
| | - Bruna Silva de Farias
- School of Chemistry and Food, Federal University of Rio Grande (FURG), km 8 - Itália Avenue, 96203-900 Rio Grande, Brazil.
| | | | - Luiz Antonio de Almeida Pinto
- School of Chemistry and Food, Federal University of Rio Grande (FURG), km 8 - Itália Avenue, 96203-900 Rio Grande, Brazil.
| | - Patrícia Silva Diaz
- Biotechnology Unit, Technology Development Center, Federal University of Pelotas, Campus Capão do Leão, Capão do Leão, Brazil
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Lu T, Cui J, Qu Q, Wang Y, Zhang J, Xiong R, Ma W, Huang C. Multistructured Electrospun Nanofibers for Air Filtration: A Review. ACS APPLIED MATERIALS & INTERFACES 2021; 13:23293-23313. [PMID: 33974391 DOI: 10.1021/acsami.1c06520] [Citation(s) in RCA: 123] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Air filtration materials (AFMs) have gradually become a research hotspot on account of the increasing attention paid to the global air quality problem. However, most AFMs cannot balance the contradiction between high filtration efficiency and low pressure drop. Electrospinning nanofibers have a large surface area to volume ratio, an adjustable porous structure, and a simple preparation process that make them an appropriate candidate for filtration materials. Therefore, electrospun nanofibers have attracted increased attention in air filtration applications. In this paper, first, the preparation methods of high-performance electrospun air filtration membranes (EAFMs) and the typical surface structures and filtration principles of electrospun fibers for air filtration are reviewed. Second, the research progress of EAFMs with multistructures, including nanoprotrusion, wrinkled, porous, branched, hollow, core-shell, ribbon, beaded, nets structure, and the application of these nanofibers in air filtration are summarized. Finally, challenges with the fabrication of EAFMs, limitations of their use, and trends for future developments are presented.
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Affiliation(s)
- Tao Lu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Jiaxin Cui
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Qingli Qu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Yulin Wang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Jian Zhang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Ranhua Xiong
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Wenjing Ma
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Chaobo Huang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
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Mohamed AL, Soliman AA, Ali EA, Abou-Zeid NY, Nada AA. Hydrogel bioink based on clickable cellulose derivatives: Synthesis, characterization and in vitro assessment. Int J Biol Macromol 2020; 163:888-897. [DOI: 10.1016/j.ijbiomac.2020.07.068] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 12/15/2022]
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Fabrication of cellulose-based adhesive composite as an active packaging material to extend the shelf life of cheese. Int J Biol Macromol 2020; 160:264-275. [DOI: 10.1016/j.ijbiomac.2020.05.217] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/18/2020] [Accepted: 05/25/2020] [Indexed: 12/14/2022]
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