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Sarangi PK, Srivastava RK, Vivekanand V, Goksen G, Sahoo UK, Thakur TK, Debeaufort F, Uysal-Unalan I, Pugazhendhi A. Recovery of green phenolic compounds from lignin-based source: Role of ferulic acid esterase towards waste valorization and bioeconomic perspectives. ENVIRONMENTAL RESEARCH 2024; 256:119218. [PMID: 38782335 DOI: 10.1016/j.envres.2024.119218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 05/08/2024] [Accepted: 05/21/2024] [Indexed: 05/25/2024]
Abstract
The production of chemicals/products so far relies on fossil-based resources with the creation of several environmental problems at the global level. In this situation, a sustainable and circular economy model is necessitated to mitigate global environmental issues. Production of biowaste from various processing industries also creates environmental issues which would be valorized for the production of industrially important reactive and bioactive compounds. Lignin acts as a vital part in biowaste composition which can be converted into a wide range of phenolic compounds. The phenolic compounds have attracted much attention, owing to their influence on diverse not only organoleptic parameters, such as taste or color, but also active agents for active packaging systems. Crop residues of varied groups, which are an affluent source of lignocellulosic biomass could serve as a renewable resource for the biosynthesis of ferulic acid (FA). FA is obtained by the FA esterase enzyme action, and it can be further converted into various tail end phenolic flavor green compounds like vanillin, vanillic acid and hydroxycinnamic acid. Lignin being renewable in nature, processing and management of biowastes towards sustainability is the need as far as the global industrial point is concerned. This review explores all the approaches for conversion of lignin into value-added phenolic compounds that could be included to packaging applications. These valorized products can exhibit the antioxidant, antimicrobial, cardioprotective, anti-inflammatory and anticancer properties, and due to these features can emerge to incorporate them into production of functional foods and be utilization of them at active food packaging application. These approaches would be an important step for utilization of the recovered bioactive compounds at the nutraceutical and food industrial sectors.
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Affiliation(s)
| | - Rajesh Kumar Srivastava
- Department of Biotechnology, GST, Gandhi Institute of Technology and Management (GITAM), Visakhapatnam, 530045, A.P., India
| | - Vivekanand Vivekanand
- Center for Energy and Environment, Malaviya National Institute of Technology Jaipur, 302 017, Rajasthan, India
| | - Gulden Goksen
- Department of Food Technology, Vocational School of Technical Sciences, Mersin Tarsus Organized Industrial Zone, Tarsus University, 33100, Mersin, Turkey
| | | | | | - Frederic Debeaufort
- Department of BioEngineering, Institute of Technology Dijon Auxerre, University of Burgundy, 7 Blvd Docteur Petitjean, 20178 Dijon Cedex, France
| | - Ilke Uysal-Unalan
- Department of Food Science, Aarhus University, Agro Food Park 48, 8200, Aarhus N, Denmark; CiFOOD - Center for Innovative Food Research, Aarhus University, Agro Food Park 48, 8200, Aarhus N, Denmark
| | - Arivalagan Pugazhendhi
- School of Engineering, Lebanese American University, Byblos, Lebanon; Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, Tamil Nadu, India.
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2
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Jiang Z, He J, Li H, Liu Y, Pang J, Li C, Jiang G. Straw Tar Epoxy Resin for Carbon Fiber-Reinforced Plastic: A Review. Polymers (Basel) 2024; 16:2433. [PMID: 39274066 PMCID: PMC11397865 DOI: 10.3390/polym16172433] [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: 06/30/2024] [Revised: 07/30/2024] [Accepted: 08/04/2024] [Indexed: 09/16/2024] Open
Abstract
The massive consumption of fossil fuels has led to the serious accumulation of carbon dioxide gas in the atmosphere and global warming. Bioconversion technologies that utilize biomass resources to produce chemical products are becoming widely accepted and highly recognized. The world is heavily dependent on petroleum-based products, which may raise serious concerns about future environmental security. Most commercially available epoxy resins (EPs) are synthesized by the condensation of bisphenol A (BPA), which not only affects the human endocrine system and metabolism, but is also costly to produce and environmentally polluting. In some cases, straw tar-based epoxy resins have been recognized as potential alternatives to bisphenol A-based epoxy resins, and are receiving increasing attention due to their important role in overcoming the above problems. Using straw tar and lignin as the main raw materials, phenol derivatives were extracted from the middle tar instead of bisphenol A. Bio-based epoxy resins were prepared by replacing epichlorohydrin with epoxylated lignin to press carbon fiber sheets, which is a kind of bio-based fine chemical product. This paper reviews the research progress of bio-based materials such as lignin modification, straw pyrolysis, lignin epoxidation, phenol derivative extraction, and synthesis of epoxy resin. It improves the performance of carbon fiber-reinforced plastic (CFRP) while taking into account the ecological and environmental protection, so that the epoxy resin is developed in the direction of non-toxic, harmless and high-performance characteristics, and it also provides a new idea for the development of bio-based carbon fibers.
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Affiliation(s)
- Zhanpeng Jiang
- Key Laboratory of Wood Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Jingyi He
- Key Laboratory of Wood Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Huijie Li
- Key Laboratory of Wood Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Yiming Liu
- Key Laboratory of Wood Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Jiuyin Pang
- Key Laboratory of Wood Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Chuanpeng Li
- Key Laboratory of Wood Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Guiquan Jiang
- Key Laboratory of Wood Materials Science and Engineering, Beihua University, Jilin 132013, China
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Abraham B, Syamnath VL, Arun KB, Fathima Zahra PM, Anjusha P, Kothakotta A, Chen YH, Ponnusamy VK, Nisha P. Lignin-based nanomaterials for food and pharmaceutical applications: Recent trends and future outlook. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 881:163316. [PMID: 37028661 DOI: 10.1016/j.scitotenv.2023.163316] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/05/2023] [Accepted: 04/02/2023] [Indexed: 06/01/2023]
Abstract
Small particles of size ranging from 1 to 100 nm are referred to as nanoparticles. Nanoparticles have tremendous applications in various sectors, including the areas of food and pharmaceutics. They are being prepared from multiple natural sources widely. Lignin is one such source that deserves special mention due to its ecological compatibility, accessibility, abundance, and low cost. This amorphous heterogeneous phenolic polymer is the second most abundant molecule in nature after cellulose. Apart from being used as a biofuel source, lignin is less explored for its potential at a nano-level. In plants, lignin exhibits cross-linking structures with cellulose and hemicellulose. Numerous advancements have taken place in synthesizing nanolignins for manufacturing lignin-based materials to benefit from the untapped potential of lignin in high-value-added applications. Lignin and lignin-based nanoparticles have numerous applications, but in this review, we are mainly focusing on the applications in the food and pharmaceutical sectors. The exercise we undertake has great relevance as it helps scientists and industries gain valuable insights into lignin's capabilities and exploit its physical and chemical properties to facilitate the development of future lignin-based materials. We have summarized the available lignin resources and their potential in the food and pharmaceutical industries at various levels. This review attempts to understand various methods adopted for the preparation of nanolignin. Furthermore, the unique properties of nano-lignin-based materials and their applications in fields including the packaging industry, emulsions, nutrient delivery, drug delivery hydrogels, tissue engineering, and biomedical applications were well-discussed.
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Affiliation(s)
- Billu Abraham
- Agro Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Council of Scientific and Industrial Research, Trivandrum 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City 807, Taiwan
| | - V L Syamnath
- Agro Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Council of Scientific and Industrial Research, Trivandrum 695019, India
| | - K B Arun
- Department of Life Sciences, Christ (Deemed to be University), Bangalore 29, India
| | - P M Fathima Zahra
- College of Agriculture, Vellayani, Kerala Agricultural University, India
| | - P Anjusha
- College of Agriculture, Vellayani, Kerala Agricultural University, India
| | - Anjhinaeyulu Kothakotta
- Agro Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Council of Scientific and Industrial Research, Trivandrum 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Yi-Hsun Chen
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung City, Taiwan.
| | - Vinoth Kumar Ponnusamy
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City 807, Taiwan; Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City 807, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital (KMUH), Kaohsiung City 807, Taiwan; Department of Chemistry, National Sun Yat-sen University (NSYSU), Kaohsiung City 804, Taiwan; Ph.D. Program of Aquatic Science and Technology, College of Hydrosphere Science, National Kaohsiung University of Science and Technology (NKUST), Kaohsiung City 811, Taiwan.
| | - P Nisha
- Agro Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Council of Scientific and Industrial Research, Trivandrum 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Coating peanut shell lignin nanospheres with gelatin via non-covalent adsorption: Key parameters, consequences, and underlying interactions. Int J Biol Macromol 2023; 233:123607. [PMID: 36773874 DOI: 10.1016/j.ijbiomac.2023.123607] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/24/2023] [Accepted: 02/05/2023] [Indexed: 02/11/2023]
Abstract
In the present work, lignin nanospheres (LNS, average diameter 166.43 nm) were prepared and the affecting parameters, the absorbed types, and mechanisms of their interactions with type-A gelatin (AG) were explored. The findings demonstrated that upon AG coating, the ζ-potential of LNS sharply decreased and concluded a negative-to-positive shift, while the average diameter and polydispersity index increased significantly. AG presented the highest coating capacity (0.32 mg/mg, db) onto LNS (0.5 mg/mL) at an optimum pH of 4.0 and an AG concentration of 1.0 mg/mL. The adsorption of AG onto LNS could be well described by the Hill model (R2 = 0.9895), which was characterized as positive synergistic adsorption by the Hill coefficient (1.32) and physical adsorption by the free energy (3.70 kJ/mg). The spectral analysis revealed that the interactions between AG and LNS were mainly driven by electrostatic forces (ΔG < 0, ΔH < 0, and ΔS > 0) together with the assistance of hydrogen bonds and hydrophobic interactions, which companied a decrease of α-helix (4.04 %) and β-turn (0.60 %) and an increase of β-sheet (3.10 %) and random coil (1.53 %) of the secondary structure of AG. The results herein certainly favored the hydrophilic/hydrophobic change of LNS/AG and the quality control of a binary system consisting of lignin and gelatin.
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Moreira WM, Moreira PVV, Dos Santos DF, Gimenes ML, Vieira MGA. Nanogreen is the new future: the conversion of lignin and lignocellulosic wastes into nanomaterials. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:19564-19591. [PMID: 36645595 DOI: 10.1007/s11356-023-25150-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
The lignocellulose biorefinery industry has assumed an important role within the current scenario. Lignin is an abundant and available biopolymer and one of the compounds present in the lignocellulosic waste. Therefore, processing lignin into new materials and nanomaterials, such as nanolignin, has attracted the attention of the scientific community. Lignin nanoparticles are materials that have excellent properties, such as biodegradability and non-toxicity, and have great potential as chelating agents, antimicrobials agents, UV protectors, nanofillers, adsorbents, catalysts, supercapacitors, emulsion stabilizers, delivered systems, drugs, and gene carriers. This review article covers the emergent scenario of nanolignin and the main aspects of scientific interest, such as the conversion and functionalization of lignin, the valorization of lignocellulose waste, and nanoparticle synthesis. A techno-economic evaluation of the biorefinery model of the nanolignin synthesis is presented based on the simulation of the process on the experimental and commercial databases available and reported by some authors. Finally, the techno-economic assessment is complemented by the life cycle assessment of various nanolignin synthesis pathways reported to evaluate the environmental implications and support this emergent technology development.
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Affiliation(s)
- Wardleison Martins Moreira
- School of Chemical Engineering, University of Campinas, Albert Einstein Avenue, Campinas, São Paulo, 50013083-852, Brazil.
- Department of Chemical Engineering, PEQ, State University of Maringá, Avenida Colombo, Maringá, Paraná, 579087020-900, Brazil.
| | - Paula Valéria Viotti Moreira
- Department of Chemical Engineering, PEQ, State University of Maringá, Avenida Colombo, Maringá, Paraná, 579087020-900, Brazil
| | - Débora Federici Dos Santos
- Department of Chemical Engineering, PEQ, State University of Maringá, Avenida Colombo, Maringá, Paraná, 579087020-900, Brazil
| | - Marcelino Luiz Gimenes
- Department of Chemical Engineering, PEQ, State University of Maringá, Avenida Colombo, Maringá, Paraná, 579087020-900, Brazil
| | - Melissa Gurgel Adeodato Vieira
- School of Chemical Engineering, University of Campinas, Albert Einstein Avenue, Campinas, São Paulo, 50013083-852, Brazil
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One-pot preparation of lignin-based cationic flocculant and its application in dye wastewater. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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A scalable and simple lignin-based polymer for ultra-efficient flocculation and sterilization. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120960] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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8
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Hussin MH, Appaturi JN, Poh NE, Latif NHA, Brosse N, Ziegler-Devin I, Vahabi H, Syamani FA, Fatriasari W, Solihat NN, Karimah A, Iswanto AH, Sekeri SH, Ibrahim MNM. A recent advancement on preparation, characterization and application of nanolignin. Int J Biol Macromol 2022; 200:303-326. [PMID: 34999045 DOI: 10.1016/j.ijbiomac.2022.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/23/2021] [Accepted: 01/01/2022] [Indexed: 12/24/2022]
Abstract
Each year, 50 to 70 million tonnes of lignin are produced worldwide as by-products from pulp industries and biorefineries through numerous processes. Nevertheless, about 98% of lignin is directly burnt to produce steam to generate energy for the pulp mills and only a handful of isolated lignin is used as a raw material for the chemical conversion and for the preparation of various substances as well as modification of lignin into nanomaterials. Thus, thanks to its complex structure, the conversion of lignin to nanolignin, attracting growing attention and generating considerable interest in the scientific community. The objective of this review is to provide a complete understanding and knowledge of the synthesis methods and functionalization of various lignin nanoparticles (LNP). The characterization of LNP such as structural, thermal, molecular weight properties together with macromolecule and quantification assessments are also reviewed. In particular, emerging applications in different areas such as UV barriers, antimicrobials, drug administration, agriculture, anticorrosives, the environment, wood protection, enzymatic immobilization and others were highlighted. In addition, future perspectives and challenges related to the development of LNP are discussed.
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Affiliation(s)
- M Hazwan Hussin
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.
| | - Jimmy Nelson Appaturi
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Ng Eng Poh
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Nur Hanis Abd Latif
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Nicolas Brosse
- Laboratoire d'Etude et de Recherche sur le MAteriau Bois (LERMAB), Faculte des Sciences et Technologies, Universite de Lorraine, Vandoeuvre-les-Nancy, France
| | - Isabelle Ziegler-Devin
- Laboratoire d'Etude et de Recherche sur le MAteriau Bois (LERMAB), Faculte des Sciences et Technologies, Universite de Lorraine, Vandoeuvre-les-Nancy, France
| | - Henri Vahabi
- Université de Lorraine, CentraleSupélec, LMOPS, F-57000, Metz, France
| | - Firda Aulya Syamani
- Research Center for Biomaterial, National Research and Innovation Agency, Bogor 16911, Indonesia
| | - Widya Fatriasari
- Research Center for Biomaterial, National Research and Innovation Agency, Bogor 16911, Indonesia
| | - Nissa Nurfajrin Solihat
- Research Center for Biomaterial, National Research and Innovation Agency, Bogor 16911, Indonesia
| | - Azizatul Karimah
- Research Center for Biomaterial, National Research and Innovation Agency, Bogor 16911, Indonesia
| | - Apri Heri Iswanto
- Department of Forest Product, Faculty of Forestry, Universitas Sumatera Utara, Medan 20155, Indonesia; JATI-Sumatran Forestry Analysis Study Center, Jl. Tridharma Ujung No. 1, Kampus USU, Medan 20155, North Sumatera, Indonesia
| | - Siti Hajar Sekeri
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Mohamad Nasir Mohamad Ibrahim
- Materials Technology Research Group (MaTReC), School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
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Abudula T, Colombani T, Alade T, Bencherif SA, Memić A. Injectable Lignin- co-Gelatin Cryogels with Antioxidant and Antibacterial Properties for Biomedical Applications. Biomacromolecules 2021; 22:4110-4121. [PMID: 34514795 DOI: 10.1021/acs.biomac.1c00575] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
For several biomedical applications, it is essential to develop novel bioactive materials. Such biomaterials could potentially improve wound healing, prevent infections, or be used in immunoengineering. For example, bioactive materials that reduce oxidative stress without relying on antibiotics and other drugs could be beneficial. Hydrogel-based biomaterials, especially those derived from natural polymers, have been regarded as one of the most promising scaffolds for biomedical research. These multifunctional scaffolds can exhibit high water adsorption capacity, biocompatibility, and biomechanical properties that can match native tissues. Cryogels are a special type of hydrogels in which polymers are cross-linked around ice crystals. As a result, cryogels exhibit unique physical features, including a macroporous and interconnected network, flexibility, shape-memory properties, and syringe injectability. Herein, we developed a multifunctional, i.e., antibacterial, antioxidant, and injectable cryogel by combining lignin with gelatin. The cryogel with 0.2% lignin showed a compressive modulus of 25 kPa and a compressive stress of 140 kPa at 80% strain, which is, respectively, 1.8 and 7 times higher than those of the pure gelatin cryogels. Meanwhile, such a cryogel formulation could completely recover its shape after compression up to 90% and was needle-injectable. Additionally, the lignin-co-gelatin cryogel with 0.1-0.2 lignin showed 8-10 mm of inhibition zone against the most common surgical site infection-associated pathogenic bacteria. Furthermore, lignin-co-gelatin cryogel was found to scavenge free radicals and have good cytocompatibility, and the cryogels with up to 0.2% lignin minimally activate naïve mouse bone marrow-derived dendritic cells. Overall, the current approach shows great promise for the design of bioresource-based multifunctional cryogels for a wide range of biomedical applications.
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Affiliation(s)
| | - Thibault Colombani
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Taofeek Alade
- Center of Nanotechnology, King Abdulaziz University, Jeddah 21569, Saudi Arabia
| | - Sidi A Bencherif
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States.,Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States.,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States.,UMR CNRS 7338 Biomechanics and Bioengineering, University of Technology of Compiègne, Sorbonne University, 60200 Compiègne, France
| | - Adnan Memić
- Center of Nanotechnology, King Abdulaziz University, Jeddah 21569, Saudi Arabia
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Vahabi H, Brosse N, Latif NA, Fatriasari W, Solihat N, Hashim R, Hazwan Hussin M, Laoutid F, Saeb M. Nanolignin in materials science and technology— does flame retardancy matter? BIOPOLYMERIC NANOMATERIALS 2021:515-559. [DOI: 10.1016/b978-0-12-824364-0.00003-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Schneider WDH, Dillon AJP, Camassola M. Lignin nanoparticles enter the scene: A promising versatile green tool for multiple applications. Biotechnol Adv 2020; 47:107685. [PMID: 33383155 DOI: 10.1016/j.biotechadv.2020.107685] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/23/2020] [Accepted: 12/22/2020] [Indexed: 02/02/2023]
Abstract
Strategies to take advantage of residual lignin from industrial processes are well regarded in the field of green chemistry and biotechnology. Quite recently, researchers transformed lignin into nanomaterials, such as nanoparticles, nanofibers, nanofilms, nanocapsules and nanotubes, attracting increasing attention from the scientific community. Lignin nanoparticles are seen as green way to use high-value renewable resources for application in different fields because recent studies have shown they are non-toxic in reasonable concentrations (both in vitro and in vivo assays), inexpensive (a waste generated in the biorefinery, for example, from the bioethanol platform) and potentially biodegradable (by fungi and bacteria in nature). Promising studies have tested lignin nanoparticles for antioxidants, UV-protectants, heavy metal absorption, antimicrobials, drugs carriers, gene delivery systems, encapsulation of molecules, biocatalysts, supercapacitors, tissue engineering, hybrid nanocomposites, wound dressing, and others. These nanoparticles can be produced from distinct lignin types and by different chemical/physical/biological methods, which will result in varied characteristics for their morphology, shape, size, yield and stability. Therefore, taking into account that the theme "lignin nanoparticles" is a trending topic, this present review is emerging and has the discuss the current status, covering from concepts, the formation mechanism, synthesis methods and applications, to the future perspectives and challenges linked to lignin-based nanomaterials, aiming at the viability and commercialization of this biotechnological product.
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Affiliation(s)
- Willian Daniel Hahn Schneider
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Francisco Getúlio Vargas Street, 1130, 95070-560 Caxias do Sul, RS, Brazil.
| | - Aldo José Pinheiro Dillon
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Francisco Getúlio Vargas Street, 1130, 95070-560 Caxias do Sul, RS, Brazil
| | - Marli Camassola
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul, Francisco Getúlio Vargas Street, 1130, 95070-560 Caxias do Sul, RS, Brazil
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12
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Ekielski A, Mishra PK. Lignin for Bioeconomy: The Present and Future Role of Technical Lignin. Int J Mol Sci 2020; 22:E63. [PMID: 33374628 PMCID: PMC7793518 DOI: 10.3390/ijms22010063] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/19/2020] [Accepted: 12/19/2020] [Indexed: 01/29/2023] Open
Abstract
Lignin, the term commonly used in literature, represents a group of heterogeneous aromatic compounds of plant origin. Protolignin or lignin in the cell wall is entirely different from the commercially available technical lignin due to changes during the delignification process. In this paper, we assess the status of lignin valorization in terms of commercial products. We start with existing knowledge of the lignin/protolignin structure in its native form and move to the technical lignin from various sources. Special attention is given to the patents and lignin-based commercial products. We observed that the technical lignin-based commercial products utilize coarse properties of the technical lignin in marketed formulations. Additionally, the general principles of polymers chemistry and self-assembly are difficult to apply in lignin-based nanotechnology, and lignin-centric investigations must be carried out. The alternate upcoming approach is to develop lignin-centric or lignin first bio-refineries for high-value applications; however, that brings its own technological challenges. The assessment of the gap between lab-scale applications and lignin-based commercial products delineates the challenges lignin nanoparticles-based technologies must meet to be a commercially viable alternative.
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Affiliation(s)
- Adam Ekielski
- Department of Production Engineering, Warsaw University of Life Sciences, 02-776 Warsaw, Poland;
| | - Pawan Kumar Mishra
- Faculty of Business and Economics, Mendel University in Brno, 61300 Brno, Czech Republic
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Barhoum A, Jeevanandam J, Rastogi A, Samyn P, Boluk Y, Dufresne A, Danquah MK, Bechelany M. Plant celluloses, hemicelluloses, lignins, and volatile oils for the synthesis of nanoparticles and nanostructured materials. NANOSCALE 2020; 12:22845-22890. [PMID: 33185217 DOI: 10.1039/d0nr04795c] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A huge variety of plants are harvested worldwide and their different constituents can be converted into a broad range of bionanomaterials. In parallel, much research effort in materials science and engineering is focused on the formation of nanoparticles and nanostructured materials originating from agricultural residues. Cellulose (40-50%), hemicellulose (20-40%), and lignin (20-30%) represent major plant ingredients and many techniques have been described that separate the main plant components for the synthesis of nanocelluloses, nano-hemicelluloses, and nanolignins with divergent and controllable properties. The minor components, such as essential oils, could also be used to produce non-toxic metal and metal oxide nanoparticles with high bioavailability, biocompatibility, and/or bioactivity. This review describes the chemical structure, the physical and chemical properties of plant cell constituents, different techniques for the synthesis of nanocelluloses, nanohemicelluloses, and nanolignins from various lignocellulose sources and agricultural residues, and the extraction of volatile oils from plants as well as their use in metal and metal oxide nanoparticle production and emulsion preparation. Furthermore, details about the formation of activated carbon nanomaterials by thermal treatment of lignocellulose materials, a few examples of mineral extraction from agriculture waste for nanoparticle fabrication, and the emerging applications of plant-based nanomaterials in different fields, such as biotechnology and medicine, environment protection, environmental remediation, or energy production and storage, are also included. This review also briefly discusses the recent developments and challenges of obtaining nanomaterials from plant residues, and the issues surrounding toxicity and regulation.
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Affiliation(s)
- Ahmed Barhoum
- Chemistry Department, Faculty of Science, Helwan University, 11795 Cairo, Egypt.
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Maldonado-Carmona N, Marchand G, Villandier N, Ouk TS, Pereira MM, Calvete MJF, Calliste CA, Żak A, Piksa M, Pawlik KJ, Matczyszyn K, Leroy-Lhez S. Porphyrin-Loaded Lignin Nanoparticles Against Bacteria: A Photodynamic Antimicrobial Chemotherapy Application. Front Microbiol 2020; 11:606185. [PMID: 33281805 PMCID: PMC7705181 DOI: 10.3389/fmicb.2020.606185] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 10/20/2020] [Indexed: 01/29/2023] Open
Abstract
The need for alternative strategies to fight bacteria is evident from the emergence of antimicrobial resistance. To that respect, photodynamic antimicrobial chemotherapy steadily rises in bacterial eradication by using light, a photosensitizer and oxygen, which generates reactive oxygen species that may kill bacteria. Herein, we report the encapsulation of 5,10,15,20-tetrakis(4-hydroxyphenyl)-21H,23H-porphyrin into acetylated lignin water-dispersible nanoparticles (THPP@AcLi), with characterization of those systems by standard spectroscopic and microscopic techniques. We observed that THPP@AcLi retained porphyrin's photophysical/photochemical properties, including singlet oxygen generation and fluorescence. Besides, the nanoparticles demonstrated enhanced stability on storage and light bleaching. THPP@AcLi were evaluated as photosensitizers against two Gram-negative bacteria, Escherichia coli and Pseudomonas aeruginosa, and against three Gram-positive bacteria, Staphylococcus aureus, Staphylococcus epidermidis, and Enterococcus faecalis. THPP@AcLi were able to diminish Gram-positive bacterial survival to 0.1% when exposed to low white LED light doses (4.16 J/cm2), requiring concentrations below 5 μM. Nevertheless, the obtained nanoparticles were unable to diminish the survival of Gram-negative bacteria. Through transmission electron microscopy observations, we could demonstrate that nanoparticles did not penetrate inside the bacterial cell, exerting their destructive effect on the bacterial wall; also, a high affinity between acetylated lignin nanoparticles and bacteria was observed, leading to bacterial flocculation. Altogether, these findings allow to establish a photodynamic antimicrobial chemotherapy alternative that can be used effectively against Gram-positive topic infections using the widely available natural polymeric lignin as a drug carrier. Further research, aimed to inhibit the growth and survival of Gram-negative bacteria, is likely to enhance the wideness of acetylated lignin nanoparticle applications.
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Affiliation(s)
- Nidia Maldonado-Carmona
- PEIRENE Laboratory, Faculty of Sciences and Techniques, University of Limoges, Limoges, France
- Laboratory of Catalysis and Fine Chemistry, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Guillaume Marchand
- PEIRENE Laboratory, Faculty of Pharmacy, University of Limoges, Limoges, France
| | - Nicolas Villandier
- PEIRENE Laboratory, Faculty of Sciences and Techniques, University of Limoges, Limoges, France
| | - Tan-Sothea Ouk
- PEIRENE Laboratory, Faculty of Sciences and Techniques, University of Limoges, Limoges, France
| | - Mariette M. Pereira
- Laboratory of Catalysis and Fine Chemistry, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Mário J. F. Calvete
- Laboratory of Catalysis and Fine Chemistry, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | | | - Andrzej Żak
- Electron Microscopy Laboratory, Wrocław University of Science and Technology, Wrocław, Poland
- Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Marta Piksa
- Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Krzysztof J. Pawlik
- Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Katarzyna Matczyszyn
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wrocław University of Science and Technology, Wrocław, Poland
| | - Stéphanie Leroy-Lhez
- PEIRENE Laboratory, Faculty of Sciences and Techniques, University of Limoges, Limoges, France
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Padilha CEDA, Nogueira CDC, Matias SCB, Costa Filho JDBD, Souza DFDS, Oliveira JAD, Santos ESD. Fabrication of hollow polymer microcapsules and removal of emulsified oil from aqueous environment using soda lignin nanoparticles. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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16
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Duarah P, Haldar D, Purkait MK. Technological advancement in the synthesis and applications of lignin-based nanoparticles derived from agro-industrial waste residues: A review. Int J Biol Macromol 2020; 163:1828-1843. [PMID: 32950524 DOI: 10.1016/j.ijbiomac.2020.09.076] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/19/2020] [Accepted: 09/10/2020] [Indexed: 12/22/2022]
Abstract
Over the years, lignin has drawn a great deal of interest for their potential use as bio-polymers due to the presence of high amount of phenolic compounds, non-polluting feature and cost-competitiveness as compared to synthetic polymers. However, in order to fast-track their development, different attempts are made towards the usage of lignin in nano form since it exhibits some unique properties in nanoscale range. The present review article provides a detail analysis on the recent advancement in the synthesis and applications of lignin nanoparticles (LNPs) derived from agro-industrial waste residues. In view of that, an in-depth morphological analysis was reviewed to assess the structural influence on the characteristics of LNPs. Further, application of LNPs is explored in different fields including bio-medical engineering, pharmaceuticals, skin-care products and food industries. Finally, the paper is concluded discussing various challenges associated with the synthesis, modification and development with an aspiration of futuristic developments. The readers of this review article will be highly benefitted after acquiring a comprehensive knowledge on LNPs and its different synthesis processes along with various applications.
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Affiliation(s)
- Prangan Duarah
- 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
- Centre for the Environment, Indian Institute of Technology Guwahati, Assam 781039, India.
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Maćczak P, Kaczmarek H, Ziegler-Borowska M. Recent Achievements in Polymer Bio-Based Flocculants for Water Treatment. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3951. [PMID: 32906667 PMCID: PMC7559979 DOI: 10.3390/ma13183951] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 08/30/2020] [Accepted: 09/04/2020] [Indexed: 01/04/2023]
Abstract
Polymer flocculants are used to promote solid-liquid separation processes in potable water and wastewater treatment. Recently, bio-based flocculants have received a lot of attention due to their superior advantages over conventional synthetic polymers or inorganic agents. Among natural polymers, polysaccharides show many benefits such as biodegradability, non-toxicity, ability to undergo different chemical modifications, and wide accessibility from renewable sources. The following article provides an overview of bio-based flocculants and their potential application in water treatment, which may be an indication to look for safer alternatives compared to synthetic polymers. Based on the recent literature, a new approach in searching for biopolymer flocculants sources, flocculation mechanisms, test methods, and factors affecting this process are presented. Particular attention is paid to flocculants based on starch, cellulose, chitosan, and their derivatives because they are low-cost and ecological materials, accepted in industrial practice. New trends in water treatment technology, including biosynthetic polymers, nanobioflocculants, and stimulant-responsive flocculants are also considered.
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Affiliation(s)
- Piotr Maćczak
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland; (P.M.); (M.Z.-B.)
- Water Supply and Sewage Enterprise LLC, Przemysłowa 4, 99-300 Kutno, Poland
| | - Halina Kaczmarek
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland; (P.M.); (M.Z.-B.)
| | - Marta Ziegler-Borowska
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland; (P.M.); (M.Z.-B.)
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18
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Guo K, Gao B, Pan J, Shen X, Liu C, Yue Q, Xu X. Effects of charge density and molecular weight of papermaking sludge-based flocculant on its decolorization efficiencies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 723:138136. [PMID: 32224406 DOI: 10.1016/j.scitotenv.2020.138136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 03/18/2020] [Accepted: 03/21/2020] [Indexed: 06/10/2023]
Abstract
The charge densities (CD) and molecular weights (MW) of the flocculants are closely related to their application performances, but seldom researches focus on the effects of flocculant CD and MW on decolorization efficiencies. Herein, a series of flocculants with various CD and MW levels, named as PBF1-9, were designed and synthesized from papermaking sludge. The physicochemical characteristics of the PBF1-9 were measured by fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), X-ray photoelectron spectroscopy (XPS) and particle charge density analyzer (PCD). The efficiencies of PBF1-9 were studied in the reactive blue (RB) dye removals by flocculation under different process conditions. The operation costs of the flocculants were evaluated at their optimal dosages. Also, the pH-independences and ion-tolerances of the aforementioned flocculants were studied in terms of the molecular levels. The experimental results exhibited that the flocculants CD or MW values were relevant to their flocculation behaviors and operation costs. CD values played a dominant role in color removal efficiencies and the costs, whereas MW values were critical to the floc structure. The pH or ion-independences of the flocculants were significantly dependent on the CD and MW values. However, some conclusions, conflicted with prior studies, were observed in this work. For instance, flocculant with the highest CD and MW levels was not the most effective one in enduring pH variation and the coexisting ions. The floc properties, including floc size, resistance and recovery ability, were relatively insensitive to flocculant intrinsic CD and MW levels when the flocculants were used at their optimal dosages. Furthermore, the possible relevance between CD or MW levels and the flocculation mechanisms have been proposed in this work. Exploring the effects of flocculants CD and MW levels could precisely control the flocculant characteristics to achieve satisfactory decontamination efficiencies with low costs.
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Affiliation(s)
- Kangying Guo
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266000, PR China
| | - Baoyu Gao
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266000, PR China.
| | - Jingwen Pan
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266000, PR China
| | - Xue Shen
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266000, PR China
| | - Caiyu Liu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266000, PR China
| | - Qinyan Yue
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266000, PR China
| | - Xing Xu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266000, PR China
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Fu S, Yang D, Zhang P, Sun G. Antibacterial Polylactic- co-glycolic Acid Braided Threads Using Plasma and Coating Modifications for Acupoint Catgut Embedding Therapy Applications. ACS APPLIED BIO MATERIALS 2020; 3:1902-1912. [PMID: 35025313 DOI: 10.1021/acsabm.9b01071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Polylactic-co-glycolic acid (PLGA) thread is frequently used for acupoint catgut embedding therapy (ACET), but the poor hydrophilicity and biocompatibility largely limited its wider applications. The aim of this study is to functionalize the PLGA braided thread and improve its cell adhesion property. The PLGA strands are first processed into threads on a circular braiding machine, and then, antibacterial treatment was introduced with and without oxygen plasma treatments. Afterward, functional characterizations such as antibacterial activity (Staphylococcus aureus and Escherichia coli), cytotoxicity, cell attachment and cell morphology, histological observation, and biodegradation experiments of threads were measured. Moreover, tensile properties and flexibility of the threads were determined to evaluate their mechanical properties. The modified threads showed rougher surfaces than those of the unmodified ones from SEM observations, and the weights and fiber diameters of the threads increased correspondingly, together with the improved surface hydrophilicity. All coated sutures showed durable antimicrobial function and slow drug releasing features for more than 5 days and good cell viability (more than 75%), according to the standard of ISO 10993-5:2009. Besides, cell attachment, tissue growth, and collagen regeneration of plasma-treated samples were greatly improved compared to those of without the plasma treatment. The threads presented slow degradation behavior after the antibacterial treatment. The threads with only plasma-treated revealed a promising prospect for clinical applications.
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Affiliation(s)
- Shaoju Fu
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Dongchao Yang
- Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200011, China
| | - Peihua Zhang
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Gang Sun
- Department of Biological and Agricultural Engineering, University of California, Davis, Davis, California 95616, United States
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20
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Rivière G, Korpi A, Sipponen MH, Zou T, Kostiainen MA, Österberg M. Agglomeration of Viruses by Cationic Lignin Particles for Facilitated Water Purification. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2020; 8:4167-4177. [PMID: 32296616 PMCID: PMC7147264 DOI: 10.1021/acssuschemeng.9b06915] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/30/2020] [Indexed: 05/07/2023]
Abstract
Virus contamination of water is a threat to human health in many countries. Current solutions for inactivation of viruses mainly rely on environmentally burdensome chemical oxidation or energy-intensive ultraviolet irradiation, which may create toxic secondary products. Here, we show that renewable plant biomass-sourced colloidal lignin particles (CLPs) can be used as agglomeration agents to facilitate removal of viruses from water. We used dynamic light scattering (DLS), electrophoretic mobility shift assay (EMSA), atomic force microscopy and transmission electron microscopy (AFM, TEM), and UV spectrophotometry to quantify and visualize adherence of cowpea chlorotic mottle viruses (CCMVs) on CLPs. Our results show that CCMVs form agglomerated complexes with CLPs that, unlike pristine virus particles, can be easily removed from water either by filtration or centrifugation. Additionally, cationic particles formed by adsorption of quaternary amine-modified softwood kraft lignin on the CLPs were also evaluated to improve the binding interactions with these anionic viruses. We foresee that due to their moderate production cost, and high availability of lignin as a side-stream from biorefineries, CLPs could be an alternative water pretreatment material in a large variety of systems such as filters, packed columns, or flocculants.
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Affiliation(s)
- Guillaume
N. Rivière
- Department
of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
| | - Antti Korpi
- Department
of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
| | - Mika Henrikki Sipponen
- Department
of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
- Department
of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16C, 106
91 Stockholm, Sweden
- E-mail:
| | - Tao Zou
- Department
of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
| | - Mauri A. Kostiainen
- Department
of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
| | - Monika Österberg
- Department
of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
- E-mail:
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23
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Zavareze EDR, Kringel DH, Dias ARG. Nano-scale polysaccharide materials in food and agricultural applications. ADVANCES IN FOOD AND NUTRITION RESEARCH 2019; 88:85-128. [PMID: 31151729 DOI: 10.1016/bs.afnr.2019.02.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Potential applications of nanotechnology in food and agriculture include: (1) the encapsulation of functional compounds; (2) production of reinforcing materials; (3) delivery of nutraceuticals in foods; (4) food safety, for detection and control of chemical and microbiological risks; (5) active and intelligent food packaging; (6) incorporation of protective substances of seeds; (7) addition of nutrients in the soil; (8) use of controlled release pesticides. Natural polysaccharides and their derivatives are widely used in the production of nano-scale materials. This chapter examines, the use of polysaccharides, such as starch, cellulose, lignin, pectin, gums, and cyclodextrins for the production of nano-scale materials, including nanocrystals, nanoemulsions, nanocomplexes, nanocapsules, and nanofibers.
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Affiliation(s)
| | - Dianini Hüttner Kringel
- Department of Agroindustrial Science and Technology, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Alvaro Renato Guerra Dias
- Department of Agroindustrial Science and Technology, Federal University of Pelotas, Pelotas, RS, Brazil.
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Synthesis of a novel tunable lignin-based star copolymer and its flocculation performance in the treatment of kaolin suspension. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.08.025] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Inducing flocculation of non-floc-forming Escherichia coli cells. World J Microbiol Biotechnol 2018; 34:185. [PMID: 30506280 DOI: 10.1007/s11274-018-2563-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 11/19/2018] [Indexed: 10/27/2022]
Abstract
The present article reviews several approaches for inducing flocculation of Escherichia coli cells. The common industrially used bacterium E. coli does not naturally have floc-forming ability. However, there are several approaches to induce flocculation of E. coli cells. One is induction by flocculants-polyvalent inorganic salts, synthetic polymeric flocculants, or bio-based polymeric materials, including polysaccharide derivatives. Another method is the induction of spontaneous flocculation by changing the phenotypes of E. coli cells; several studies have shown that physical treatment or gene modification can endow E. coli cells with floc-forming ability. Coculturing E. coli with other microbes is another approach to induce E. coli flocculation. These approaches have particular advantages and disadvantages, and remain open to clarification of the flocculation mechanisms and improvement of the induction processes. In this review, several approaches to the induction of E. coli flocculation are summarized and discussed. This review will be a useful guide for the future development of methods for the flocculation of non-floc-forming microorganisms.
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