1
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Khan S, Hashim SBH, Arslan M, Zhang K, Bilal M, Zhiyang C, Zhihua L, Tahir HE, Zhai X, Shishir MRI, Zou X. Berry wax improves the physico-mechanical, thermal, water barrier properties and biodegradable potential of chitosan food packaging film. Int J Biol Macromol 2024; 261:129821. [PMID: 38286371 DOI: 10.1016/j.ijbiomac.2024.129821] [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: 11/04/2023] [Revised: 01/16/2024] [Accepted: 01/26/2024] [Indexed: 01/31/2024]
Abstract
Chitosan (CT) is extensively applied in developing food packaging films due to its non-toxic, biodegradable, and good film-forming properties. But CT-based single polymer film has issues with poor physico-mechanical, thermal, and light barrier properties. Therefore, this study aimed to incorporate natural berry wax (BYW) at various concentrations (5 %, 10 %, 15 %, 20 %, and 25 %, wt%) into CT to improve the quality characteristics of CT film. The microstructure of the film matrix was effectively proven to be compatible with BYW through the utilization of SEM, XRD, and FTIR spectroscopy. The results demonstrated that the quality parameters of CT/BYW composite film were significantly affected by the increasing concentration of BYW. The integration of BYW with a concentration of 5 % to 20 % to CT substantially improved the film characteristics by reducing moisture content, swelling power, solubility, and water vapor permeability, increasing the film's opacity, thermal stability, and tensile strength as well as enhancing the biodegradable potential. Furthermore, CT/BYW films showed higher thermal stability and UV and visible light resistance compared to pure CT film. Taken together, the CT film with 20 % berry wax showed the best film characteristics and biodegradable potential, which could be promising for enhancing the shelf-life of various food products.
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Affiliation(s)
- Suliman Khan
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Sulafa B H Hashim
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Muhammad Arslan
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Ke Zhang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Muhammad Bilal
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Chen Zhiyang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Li Zhihua
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Haroon Elrasheid Tahir
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Xiaodong Zhai
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | | | - Xiaobo Zou
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing (Jiangsu University), Jiangsu Education Department, China.
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2
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Elizalde-Cárdenas A, Ribas-Aparicio RM, Rodríguez-Martínez A, Leyva-Gómez G, Ríos-Castañeda C, González-Torres M. Advances in chitosan and chitosan derivatives for biomedical applications in tissue engineering: An updated review. Int J Biol Macromol 2024; 262:129999. [PMID: 38331080 DOI: 10.1016/j.ijbiomac.2024.129999] [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: 11/13/2023] [Revised: 01/19/2024] [Accepted: 02/04/2024] [Indexed: 02/10/2024]
Abstract
In recent years, chitosan (CS) has received much attention as a functional biopolymer for various applications, especially in the biomedical field. It is a natural polysaccharide created by the chemical deacetylation of chitin (CT) that is nontoxic, biocompatible, and biodegradable. This natural polymer is difficult to process; however, chemical modification of the CS backbone allows improved use of functional derivatives. CS and its derivatives are used to prepare hydrogels, membranes, scaffolds, fibers, foams, and sponges, primarily for regenerative medicine. Tissue engineering (TE), currently one of the fastest-growing fields in the life sciences, primarily aims to restore or replace lost or damaged organs and tissues using supports that, combined with cells and biomolecules, generate new tissue. In this sense, the growing interest in the application of biomaterials based on CS and some of its derivatives is justifiable. This review aims to summarize the most important recent advances in developing biomaterials based on CS and its derivatives and to study their synthesis, characterization, and applications in the biomedical field, especially in the TE area.
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Affiliation(s)
- Alejandro Elizalde-Cárdenas
- Conahcyt & Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra", Ciudad de México 14389, Mexico; Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México 11340, Mexico
| | - Rosa María Ribas-Aparicio
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México 11340, Mexico
| | - Aurora Rodríguez-Martínez
- Conahcyt & Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra", Ciudad de México 14389, Mexico; Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México 11340, Mexico
| | - Gerardo Leyva-Gómez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - Camilo Ríos-Castañeda
- Dirección de investigación, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra", Ciudad de México 14389, Mexico
| | - Maykel González-Torres
- Conahcyt & Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra", Ciudad de México 14389, Mexico.
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3
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Andze L, Skute M, Zoldners J, Andzs M, Sirmulis G, Irbe I, Milbreta U, Dabolina I, Filipova I. Enhancing Paper Packaging's Wet Strength Using the Synergy between Chitosan and Nanofibrillated Cellulose Additives. Polymers (Basel) 2024; 16:227. [PMID: 38257026 PMCID: PMC10819968 DOI: 10.3390/polym16020227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 12/29/2023] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
The demand for eco-friendly packaging materials has urged researchers to look for alternatives to petroleum-based polymers. In this regard, paper-based products have turned out to be a promising choice; however, their weak resistance to water has limited their application. The use of various additives to enhance paper's moisture resistance is a common practice. However, considering the growing global agenda for sustainable development, the search for new bio-based paper additives has become increasingly important. This study investigated the potential synergistic impact of the addition of nanofibrillated cellulose (NFC) and chitosan additives (CHIT) to different fiber combinations to improve paper's properties, in particular, their wet strength. The efficacy of the additive application order was examined and was found to be crucial in achieving the desired outcomes. The results showed that incorporating CHIT after NFC enhanced the paper's tensile and burst indicators, as well as the paper stretch in the dry state, by 35-70%, 35-55%, and 20-35%, respectively. In addition, the tensile index and stretch in the wet state improved 9-13 times and 2.5-5.5 times over, respectively. The air permeability decreased 2.5-12 times over. These findings demonstrate that the sequential addition of the NFC and CHIT additives yield a greater enhancement of paper's properties than using each additive separately.
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Affiliation(s)
- Laura Andze
- Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (M.S.); (J.Z.); (M.A.); (I.I.); (U.M.); (I.F.)
| | - Marite Skute
- Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (M.S.); (J.Z.); (M.A.); (I.I.); (U.M.); (I.F.)
| | - Juris Zoldners
- Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (M.S.); (J.Z.); (M.A.); (I.I.); (U.M.); (I.F.)
| | - Martins Andzs
- Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (M.S.); (J.Z.); (M.A.); (I.I.); (U.M.); (I.F.)
- Ltd. V.L.T., Murmuizas Street 11a, LV-4201 Valmiera, Latvia;
| | - Gatis Sirmulis
- Ltd. V.L.T., Murmuizas Street 11a, LV-4201 Valmiera, Latvia;
| | - Ilze Irbe
- Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (M.S.); (J.Z.); (M.A.); (I.I.); (U.M.); (I.F.)
| | - Ulla Milbreta
- Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (M.S.); (J.Z.); (M.A.); (I.I.); (U.M.); (I.F.)
- Faculty of Natural Science and Technology, Riga Technical University, 6A Kipsalas Street, LV-1048 Riga, Latvia
| | - Inga Dabolina
- Personal Protective Equipment Laboratory, Riga Technical University, Kipsalas 6B-242, LV-1048 Riga, Latvia;
| | - Inese Filipova
- Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (M.S.); (J.Z.); (M.A.); (I.I.); (U.M.); (I.F.)
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4
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Rahman S, Gogoi J, Dubey S, Chowdhury D. Animal derived biopolymers for food packaging applications: A review. Int J Biol Macromol 2024; 255:128197. [PMID: 37979757 DOI: 10.1016/j.ijbiomac.2023.128197] [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: 07/22/2023] [Revised: 11/11/2023] [Accepted: 11/15/2023] [Indexed: 11/20/2023]
Abstract
It is essential to use environment-friendly, non-toxic, biodegradable and sustainable materials for various applications. Biopolymers are derived from renewable sources like plants, microorganisms, and agricultural wastes. Unlike conventional polymers, biopolymer has a lower carbon footprint and contributes less to greenhouse gas emission. All biopolymers are biodegradable, meaning natural processes can break them down into harmless products such as water and biomass. This property is of utmost importance for various sustainable applications. This review discusses different classifications of biopolymers based on origin, including plant-based, animal-based and micro-organism-based biopolymers. The review also discusses the desirable properties that are required in materials for their use as packaging material. It also discusses the different processes used in modifying the biopolymer to improve its properties. Finally, this review shows the recent developments taking place in using specifically animal origin-based biopolymer and its use in packaging material. It was observed that animal-origin-based biopolymers, although they possess unique properties however, are less explored than plant-origin biopolymers. The animal-origin-based biopolymers covered in this review are chitosan, gelatin, collagen, keratin, casein, whey, hyaluronic acid and silk fibroin. This review will help in renewing research interest in animal-origin biopolymers. In summary, biopolymer offers a sustainable and environment-friendly alternative to conventional polymers. Their versatility, biocompatibility will help create a more sustainable future.
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Affiliation(s)
- Sazzadur Rahman
- Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India; Department of Chemistry, Gauhati University, G. B. Nagar, Guwahati 781014, Assam, India
| | - Jahnabi Gogoi
- Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
| | - Sonali Dubey
- Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
| | - Devasish Chowdhury
- Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India; Department of Chemistry, Gauhati University, G. B. Nagar, Guwahati 781014, Assam, India.
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5
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Su N. Spherical Polyelectrolyte Brushes as Flocculants and Retention Aids in Wet-End Papermaking. Molecules 2023; 28:7984. [PMID: 38138474 PMCID: PMC10745445 DOI: 10.3390/molecules28247984] [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: 11/06/2023] [Revised: 12/02/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
As the criteria of energy conservation, emission reduction, and environmental protection become more important, and with the development of wet-end papermaking, developing excellent retention aids is of great significance. Spherical polyelectrolyte brushes (SPBs) bearing polyelectrolyte chains grafted densely to the surface of core particle have the potential to be novel retention aids in wet-end papermaking not only because of their spherical structure, but also due to controllable grafting density and molecular weight. Such characteristics are crucial in order to design multi-functional retention aids in sophisticated papermaking systems. This review presents some important recent advances with respect to retention aids, including single-component system and dual-component systems. Then, basic theory in papermaking is also briefly reviewed. Based on these advances, it emphatically describes spherical polyelectrolyte brushes, focused on their preparation methods, characterization, conformation, and applications in papermaking. This work is expected to contribute to improve a comprehensive understanding on the composition, properties, and function mechanisms of retention aids, which helps in the further investigation on the design of novel retention aids with excellent performance.
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Affiliation(s)
- Na Su
- Department of Printing and Packaging Engineering, Shanghai Publishing and Printing College, Shanghai 200093, China
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6
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Shahid-Ul-Islam, Jaiswal V, Butola BS, Majumdar A. Production of PVA-chitosan films using green synthesized ZnO NPs enriched with dragon fruit extract envisaging food packaging applications. Int J Biol Macromol 2023; 252:126457. [PMID: 37611684 DOI: 10.1016/j.ijbiomac.2023.126457] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/04/2023] [Accepted: 08/20/2023] [Indexed: 08/25/2023]
Abstract
In this work, the PVA-chitosan composite packaging films doped with biomass-fabricated zinc oxide nanoparticles (ZnO NPs) and dragon fruit waste extract (DFE) were developed for potential use in food packaging applications. ZnO NPs were synthesized using a sustainable method employing C. sinensis waste extract as a reducing agent. Chitosan and PVA were blended in a specific ratio (1: 1 w/w) to obtain a film-forming solution, into which the ZnO NPs and dragon fruit waste extract were incorporated. The resulting solution was cast into films, which were characterized using various analytical techniques. Mechanical properties, water solubility, and thermal stability of the films were also evaluated. The results demonstrated that the incorporation of green ZnO NPs and dragon fruit waste extract enhanced the mechanical strength and thermal stability of the films while reducing water vapor permeability. Moreover, the films exhibited biocidal and excellent 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging properties, indicating their use in the food packaging sector. The production of these films offers a practical approach to produce bioactive food packaging materials. The use of plant extract and waste material as reducing agents can reduce the overall cost of production while providing added benefits, such as antioxidant and antibacterial properties.
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Affiliation(s)
- Shahid-Ul-Islam
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Vivek Jaiswal
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - B S Butola
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
| | - Abhijit Majumdar
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
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7
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Jiang M, Althomali RH, Ansari SA, Saleh EAM, Gupta J, Kambarov KD, Alsaab HO, Alwaily ER, Hussien BM, Mustafa YF, Narmani A, Farhood B. Advances in preparation, biomedical, and pharmaceutical applications of chitosan-based gold, silver, and magnetic nanoparticles: A review. Int J Biol Macromol 2023; 251:126390. [PMID: 37595701 DOI: 10.1016/j.ijbiomac.2023.126390] [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: 04/05/2023] [Revised: 06/11/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
During the last decades, the ever-increasing incidence of various diseases, like cancer, has led to a high rate of death worldwide. On the other hand, conventional modalities (such as chemotherapy and radiotherapy) have not indicated enough efficiency in the diagnosis and treatment of diseases. Thus, potential novel approaches should be taken into consideration to pave the way for the suppression of diseases. Among novel approaches, biomaterials, like chitosan nanoparticles (CS NPs, N-acetyl-glucosamine and D-glucosamine), have been approved by the FDA for some efficient pharmaceutical applications. These NPs owing to their physicochemical properties, modification with different molecules, biocompatibility, serum stability, less immune response, suitable pharmacokinetics and pharmacodynamics, etc. have received deep attention among researchers and clinicians. More importantly, the impact of CS polysaccharide in the synthesis, preparation, and delivery of metallic NPs (like gold, silver, and magnetic NPs), and combination of CS with these metallic NPs can further facilitate the diagnosis and treatment of diseases. Metallic NPs possess some features, like converting NIR photon energy into thermal energy and anti-microorganism capability, and can be a potential candidate for the diagnosis and treatment of diseases in combination with CS NPs. These combined NPs would be efficient pharmaceuticals in the future.
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Affiliation(s)
- Mingyang Jiang
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China, 530021
| | - Raed H Althomali
- Department of Chemistry, Prince Sattam Bin Abdulaziz University, College of Arts and Science, Wadi Al-Dawasir 11991, Saudi Arabia
| | - Shakeel Ahmed Ansari
- Department of Biochemistry, General Medicine Practice Program, Batterjee Medical College, Jeddah 21442, Saudi Arabia
| | - Ebraheem Abdu Musad Saleh
- Department of Chemistry, Prince Sattam Bin Abdulaziz University, College of Arts and Science, Wadi Al-Dawasir 11991, Saudi Arabia
| | - Jitendra Gupta
- Institute of Pharmaceutical Research, GLA University, Mathura 281406, U. P., India
| | | | - Hashem O Alsaab
- Pharmaceutics and Pharmaceutical Technology, Taif University, Taif, Saudi Arabia
| | - Enas R Alwaily
- Microbiology Research Group, College of Pharmacy, Al-Ayen University, Thi-Qar, Iraq
| | - Beneen M Hussien
- Medical Laboratory Technology Department, College of Medical Technology, The Islamic University, Najaf, Iraq
| | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul 41001, Iraq
| | - Asghar Narmani
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.
| | - Bagher Farhood
- Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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8
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Mukarram M, Ali J, Dadkhah-Aghdash H, Kurjak D, Kačík F, Ďurkovič J. Chitosan-induced biotic stress tolerance and crosstalk with phytohormones, antioxidants, and other signalling molecules. FRONTIERS IN PLANT SCIENCE 2023; 14:1217822. [PMID: 37538057 PMCID: PMC10394624 DOI: 10.3389/fpls.2023.1217822] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 06/30/2023] [Indexed: 08/05/2023]
Abstract
Several polysaccharides augment plant growth and productivity and galvanise defence against pathogens. Such elicitors have ecological superiority over traditional growth regulators, considering their amplified biocompatibility, biodegradability, bioactivity, non-toxicity, ubiquity, and inexpensiveness. Chitosan is a chitin-derived polysaccharide that has recently been spotlighted among plant scientists. Chitosan supports plant growth and development and protects against microbial entities such as fungi, bacteria, viruses, nematodes, and insects. In this review, we discuss the current knowledge of chitosan's antimicrobial and insecticidal potential with recent updates. These effects are further explored with the possibilities of chitosan's active correspondence with phytohormones such as jasmonic acid (JA), salicylic acid (SA), indole acetic acid (IAA), abscisic acid (ABA), and gibberellic acid (GA). The stress-induced redox shift in cellular organelles could be substantiated by the intricate participation of chitosan with reactive oxygen species (ROS) and antioxidant metabolism, including hydrogen peroxide (H2O2), superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD). Furthermore, we propose how chitosan could be intertwined with cellular signalling through Ca2+, ROS, nitric oxide (NO), transcription factors (TFs), and defensive gene activation.
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Affiliation(s)
- Mohammad Mukarram
- Department of Phytology, Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovakia
| | - Jamin Ali
- Centre for Applied Entomology and Parasitology, School of Life Sciences, Keele University, Newcastle-under-Lyme, Staffordshire, United Kingdom
| | - Hamed Dadkhah-Aghdash
- Department of Plant Biology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Daniel Kurjak
- Department of Integrated Forest and Landscape Protection, Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovakia
| | - František Kačík
- Department of Chemistry and Chemical Technologies, Faculty of Wood Sciences and Technology, Technical University in Zvolen, Zvolen, Slovakia
| | - Jaroslav Ďurkovič
- Department of Phytology, Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovakia
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9
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Naitzel TDC, Garcia VADS, Lourenço CAM, Vanin FM, Yoshida CMP, Carvalho RAD. Properties of Paperboard Coated with Natural Polymers and Polymer Blends: Effect of the Number of Coating Layers. Foods 2023; 12:2745. [PMID: 37509837 PMCID: PMC10379446 DOI: 10.3390/foods12142745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/04/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Paper is one of the packaging materials that presents a biodegradable character, being used in several areas; however, its barrier properties (gases and fat) and mechanics are reduced, which limits its application. Coating papers with synthetic polymers improve these properties, reducing their biodegradability and recyclability. The objective of this work was to develop and characterize coated paperboard, using the tape casting technique, with different ratios of film form agar-agar/chitosan (AA:CHI, 100:0, 50:50, and 0:100) and different numbers of coating layers (operating times for application of 14.25 min and 28.5 min for one and two layers, respectively). A significant reduction in water absorption capacity was found by applying a 0:100 coating (approximately 15%). Considering all coating formulations, the water vapor permeability reduced by 10 to 60% compared to uncoated paperboard, except for two layers coated with 0:100. The tensile index (independent of AA:CHI) was higher in the machine direction (22.59 to 24.99 MPa) than in the cross-section (11.87-13.01 MPa). Paperboard coated only with chitosan showed superior properties compared to the other formulation coatings evaluated.
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Affiliation(s)
- Thaís de Cássia Naitzel
- Faculty of Animal Science and Food Engineering, USP-University of São Paulo, Street Duque de Caxias Norte 225, Pirassununga 13635-900, Brazil
| | - Vitor Augusto Dos Santos Garcia
- Faculty of Agricultural Sciences, UNESP-São Paulo State University, Street José Barbosa de Barros 1780, Botucatu 19082-080, Brazil
| | - Carla Alves Monaco Lourenço
- Faculty of Animal Science and Food Engineering, USP-University of São Paulo, Street Duque de Caxias Norte 225, Pirassununga 13635-900, Brazil
| | - Fernanda Maria Vanin
- Faculty of Animal Science and Food Engineering, USP-University of São Paulo, Street Duque de Caxias Norte 225, Pirassununga 13635-900, Brazil
| | - Cristiana Maria Pedroso Yoshida
- Institute of Environmental, Chemical and Pharmaceutical Sciences, UNIFESP-Federal University of São Paulo, Rua São Nicolau 210, Diadema 09913-030, Brazil
| | - Rosemary Aparecida de Carvalho
- Faculty of Animal Science and Food Engineering, USP-University of São Paulo, Street Duque de Caxias Norte 225, Pirassununga 13635-900, Brazil
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10
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Li Z, Tang S, Shi Z, Li B, Feng D, Xie D, Han T, Li C. Multi-scale cellular PLA-based bionic scaffold to promote bone regrowth and repair. Int J Biol Macromol 2023:125511. [PMID: 37356693 DOI: 10.1016/j.ijbiomac.2023.125511] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/08/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
Large bone defects have presented a significant challenge in orthopedic treatments, and the emergence of tissue-engineered scaffolds has introduced new avenues for treatment. Nonetheless, the clinical application of such scaffolds has been hindered by drawbacks like inadequate mechanical properties, and deficient osteogenesis. Herein, a biocompatible polylactic acid (PLA) based composite was proposed to emulate cancellous bone's morphology by incorporating nano-hydroxyapatite (nHA). In addition, a quantity of Mg2+ and chitosan (CS) as active osteogenic factors were adopted to imitate the bone marrow mesenchymal components in vivo. Using a pre-evaporated solvent and sacrificial multi-template techniques, the cellular PLA-based tissue engineering scaffolds containing macropores larger than 100 μm and micropores smaller than 10 μm were developed. The scaffold's bionic structure, osteogenic active component, and multi-scale cellular make it comparable to cancellous bone, with favorable mechanical properties and hydrophilicity. Vitro tests using Sprague-Dawley (SD) rat bone marrow mesenchymal stem cells (rBMSCs) demonstrated the scaffold's excellent biocompatibility to induce high efficiency of osteogenic differentiation. The bionic porous scaffold with multi-scale cellular structure also can recruit rBMSCs, promote bone regrowth and osteogenic differentiation, and facilitate the regeneration of defective bone tissue for repair. This contribution presented a promising strategy for future advancements in bone tissue engineering.
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Affiliation(s)
- Zhongming Li
- Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, The Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan Province, Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Shan Tang
- Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, The Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan Province, Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Zhi Shi
- Department of Orthopedics, First Affiliated Hospital of Kunming Medical University, Kunming Medical University, Kunming 650032, China
| | - Bin Li
- Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, The Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan Province, Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Dong Feng
- Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, The Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan Province, Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China.
| | - Delong Xie
- Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, The Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan Province, Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Tao Han
- Spinal Surgery, Affiliated Hospital of Yunnan University, Yunnan University, Kunming, Yunnan 650021, China
| | - Chengyong Li
- Spinal Surgery, Affiliated Hospital of Yunnan University, Yunnan University, Kunming, Yunnan 650021, China..
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Novikov VY, Derkach SR, Konovalova IN, Dolgopyatova NV, Kuchina YA. Mechanism of Heterogeneous Alkaline Deacetylation of Chitin: A Review. Polymers (Basel) 2023; 15:polym15071729. [PMID: 37050343 PMCID: PMC10097213 DOI: 10.3390/polym15071729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
This review provides an analysis of experimental results on the study of alkaline heterogeneous deacetylation of chitin obtained by the authors and also published in the literature. A detailed analysis of the reaction kinetics was carried out considering the influence of numerous factors: reaction reversibility, crystallinity and porosity of chitin, changes in chitin morphology during washing, alkali concentration, diffusion of hydroxide ions, and hydration of reacting particles. A mechanism for the chitin deacetylation reaction is proposed, taking into account its kinetic features in which the decisive role is assigned to the effects of hydration. It has been shown that the rate of chitin deacetylation increases with a decrease in the degree of hydration of hydroxide ions in a concentrated alkali solution. When the alkali concentration is less than the limit of complete hydration, the reaction practically does not occur. Hypotheses have been put forward to explain the decrease in the rate of the reaction in the second flat portion of the kinetic curve. The first hypothesis is the formation of “free” water, leading to the hydration of chitin molecules and a decrease in the reaction rate. The second hypothesis postulates the formation of a stable amide anion of chitosan, which prevents the nucleophilic attack of the chitin macromolecule by hydroxide ions.
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