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Benitez JJ, Florido-Moreno P, Porras-Vázquez JM, Tedeschi G, Athanassiou A, Heredia-Guerrero JA, Guzman-Puyol S. Transparent, plasticized cellulose-glycerol bioplastics for food packaging applications. Int J Biol Macromol 2024; 273:132956. [PMID: 38848838 DOI: 10.1016/j.ijbiomac.2024.132956] [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: 02/20/2024] [Revised: 05/15/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Free-standing films have been obtained by drop-casting cellulose-glycerol mixtures (up to 50 wt% glycerol) dissolved in trifluoroacetic acid and trifluoroacetic anhydride (TFA:TFAA, 2:1, v:v). A comprehensive examination of the optical, structural, mechanical, thermal, hydrodynamic, barrier, migration, greaseproof, and biodegradation characteristics of the films was conducted. The resulting cellulose-glycerol blends exhibited an amorphous molecular structure and a reinforced H-bond network, as evidenced by X-ray diffraction analysis and infrared spectroscopy, respectively. The inclusion of glycerol exerted a plasticizing influence on the mechanical properties of the films, while keeping their transparency. Hydrodynamic and barrier properties were assessed through water uptake and water vapor/oxygen transmission rates, respectively, and obtained values were consistent with those of other cellulose-based materials. Furthermore, overall migration levels were below European regulation limits, as stated by using Tenax® as a dry food simulant. In addition, these bioplastics demonstrated good greaseproof performance, particularly at high glycerol content, and potential as packaging materials for bakery products. Biodegradability assessments were carried out by measuring the biological oxygen demand in seawater and high biodegradation rates induced by glycerol were observed.
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Affiliation(s)
- José J Benitez
- Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC-Universidad de Sevilla, Calle Americo Vespucio 49, Isla de la Cartuja, Sevilla 41092, Spain.
| | - Pedro Florido-Moreno
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM, UMA-CSIC), Bulevar Louis Pasteur 49, 29010 Malaga, Spain
| | - José M Porras-Vázquez
- Departamento de Química Inorgánica, Cristalografía y Mineralogía, Universidad de Málaga, 29071 Málaga, Spain
| | - Giacomo Tedeschi
- Smart Materials Group, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Athanassia Athanassiou
- Smart Materials Group, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - José A Heredia-Guerrero
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM, UMA-CSIC), Bulevar Louis Pasteur 49, 29010 Malaga, Spain
| | - Susana Guzman-Puyol
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM, UMA-CSIC), Bulevar Louis Pasteur 49, 29010 Malaga, Spain.
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2
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Rocha DHA, Pinto DCGA, Silva AMS. Macroalgae Specialized Metabolites: Evidence for Their Anti-Inflammatory Health Benefits. Mar Drugs 2022; 20:md20120789. [PMID: 36547936 PMCID: PMC9783307 DOI: 10.3390/md20120789] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/14/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022] Open
Abstract
Inflammation is an organism's response to chemical or physical injury. It is split into acute and chronic inflammation and is the last, most significant cause of death worldwide. Nowadays, according to the World Health Organization (WHO), the greatest threat to human health is chronic disease. Worldwide, three out of five people die from chronic inflammatory diseases such as stroke, chronic respiratory diseases, heart disorders, and cancer. Nowadays, anti-inflammatory drugs (steroidal and non-steroidal, enzyme inhibitors that are essential in the inflammatory process, and receptor antagonists, among others) have been considered as promising treatments to be explored. However, there remains a significant proportion of patients who show poor or incomplete responses to these treatments or experience associated severe side effects. Seaweeds represent a valuable resource of bioactive compounds associated with anti-inflammatory effects and offer great potential for the development of new anti-inflammatory drugs. This review presents an overview of specialized metabolites isolated from seaweeds with in situ and in vivo anti-inflammatory properties. Phlorotannins, carotenoids, sterols, alkaloids, and polyunsaturated fatty acids present significant anti-inflammatory effects given that some of them are involved directly or indirectly in several inflammatory pathways. The majority of the isolated compounds inhibit the pro-inflammatory mediators/cytokines. Studies have suggested an excellent selectivity of chromene nucleus towards inducible pro-inflammatory COX-2 than its constitutive isoform COX-1. Additional research is needed to understand the mechanisms of action of seaweed's compounds in inflammation, given the production of sustainable and healthier anti-inflammatory agents.
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3
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Don TM, Ma CH, Huang YC. In Situ Release of Ulvan from Crosslinked Ulvan/Chitosan Complex Films and Their Evaluation as Wound Dressings. Polymers (Basel) 2022; 14:polym14245382. [PMID: 36559749 PMCID: PMC9786826 DOI: 10.3390/polym14245382] [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: 10/24/2022] [Revised: 11/30/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
When a wound forms due to any injuries, it should be covered with a functional wound dressing for accelerating wound healing and reducing infection. In this study, crosslinked ulvan/chitosan complex films were prepared with or without the addition of glycerol and chlorophyll, and their wound healing properties were evaluated for potential application in wound dressing. The results showed that the tensile strength and elongation at break of the prepared ulvan/chitosan complex films were 2.23-2.48 MPa and 83.8-108.5%, respectively. Moreover, their water vapor transmission rates (WVTRs) were in the range of 1791-2029 g/m2-day, providing suitable environment for wound healing. Particularly, these complex films could release ulvan in situ in a short time, and the film with chlorophyll added had the highest release rate, reaching 62.8% after 20 min of releasing. In vitro studies showed that they were biocompatible toward NIH 3T3 and HaCaT cells, and promoted the migration of NIH 3T3 cells. These complex films could protect HaCaT cells from oxidative damage and reduce the production of reactive oxygen species (ROS); the addition of chlorophyll also effectively reduced the inflammatory response induced by LPS as found in the reduction in both NO and IL-6. Animal models showed that the complex films added with glycerol and chlorophyll could promote wound healing in the early stage, while accelerating the regeneration of dermal glands and collagen production. Briefly, these ulvan/chitosan complex films had good physiochemical properties and biological activity, and could accelerate wound healing both in vitro and in vivo.
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Affiliation(s)
- Trong-Ming Don
- Department of Chemical and Materials Engineering, Tamkang University, No. 151 Yingzhuan Rd., New Taipei City 251301, Taiwan
- Correspondence: (T.-M.D.); (Y.-C.H.)
| | - Chen-Han Ma
- Department of Food Science, National Taiwan Ocean University, No. 2 Beining Rd., Keelung City 20224, Taiwan
| | - Yi-Cheng Huang
- Department of Food Science, National Taiwan Ocean University, No. 2 Beining Rd., Keelung City 20224, Taiwan
- Correspondence: (T.-M.D.); (Y.-C.H.)
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4
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Greaseproof, hydrophobic, and biodegradable food packaging bioplastics from C6-fluorinated cellulose esters. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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5
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Guzman-Puyol S, Hierrezuelo J, Benítez JJ, Tedeschi G, Porras-Vázquez JM, Heredia A, Athanassiou A, Romero D, Heredia-Guerrero JA. Transparent, UV-blocking, and high barrier cellulose-based bioplastics with naringin as active food packaging materials. Int J Biol Macromol 2022; 209:1985-1994. [PMID: 35504412 DOI: 10.1016/j.ijbiomac.2022.04.177] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/22/2022] [Accepted: 04/24/2022] [Indexed: 01/28/2023]
Abstract
Free-standing, robust, and transparent bioplastics were obtained by blending cellulose and naringin at different proportions. Optical, thermal, mechanical, antioxidant, and antimicrobial properties were systematically investigated. In general, the incorporation of naringin produced important UV blocking and plasticizer effects and good antioxidant and antibacterial properties. Moreover, the barrier properties were characterized by determination of their water and oxygen transmission rates, finding that both parameters decreased by increasing the naringin content and reaching values similar to other petroleum-based plastics and cellulose derivatives used for food packaging applications. Finally, the biodegradability of these films was determined by measurement of the biological oxygen demand (BOD) in seawater, demonstrating an excellent decomposition in such conditions.
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Affiliation(s)
- Susana Guzman-Puyol
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM, UMA-CSIC), Bulevar Louis Pasteur 49, 29010, Malaga, Spain.
| | - Jesús Hierrezuelo
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM, UMA-CSIC), Departamento de Microbiología, Bulevar Louis Pasteur 49, 29010 Malaga, Spain
| | - José J Benítez
- Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC, Universidad de Sevilla, Calle Americo Vespucio 49, Isla de la Cartuja, Sevilla 41092, Spain
| | - Giacomo Tedeschi
- Smart Materials, Nanophysics, Istituto Italiano di Tecnologia, Via Morego, 30, Genova 16163, Italy
| | - José M Porras-Vázquez
- Departamento de Química Inorgánica, Cristalografía y Mineralogía, Universidad de Málaga, 29071 Málaga, Spain
| | - Antonio Heredia
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM, UMA-CSIC), Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, E-29071 Málaga, Spain
| | - Athanassia Athanassiou
- Smart Materials, Nanophysics, Istituto Italiano di Tecnologia, Via Morego, 30, Genova 16163, Italy
| | - Diego Romero
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM, UMA-CSIC), Departamento de Microbiología, Bulevar Louis Pasteur 49, 29010 Malaga, Spain
| | - José A Heredia-Guerrero
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM, UMA-CSIC), Bulevar Louis Pasteur 49, 29010, Malaga, Spain.
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6
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Crosslinked complex films based on chitosan and ulvan with antioxidant and whitening activities. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102423] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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7
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Merino D, Bertolacci L, Paul UC, Simonutti R, Athanassiou A. Avocado Peels and Seeds: Processing Strategies for the Development of Highly Antioxidant Bioplastic Films. ACS APPLIED MATERIALS & INTERFACES 2021; 13:38688-38699. [PMID: 34346668 PMCID: PMC8397233 DOI: 10.1021/acsami.1c09433] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/23/2021] [Indexed: 05/28/2023]
Abstract
The industrial processing of avocados annually generates more than 1.2 million tons of avocado peels (APs) and avocado seeds (ASs) that have great potential in the production of active bioplastics, although they have never been considered for this aim until now. Separately, the APs and ASs, as well as a combination of avocado peels and seeds (APSs), were evaluated here for the first time for the preparation of antioxidant films, with application in food packaging. Films were prepared by casting, after their processing by three different methods: (1) hydrolysis in acid media, (2) hydrolysis followed by plasticization, and (3) hydrolysis and plasticization followed by blending with pectin polymers in different proportions (25 and 50 wt %). The results indicate that the combination of hydrolysis, plasticization, and pectin blending is essential to obtain materials with competitive mechanical properties, optical clarity, excellent oxygen barrier properties, high antioxidant activity, biodegradability, and migration of components in TENAX suitable for food contact applications. In addition, the materials prepared with APSs are advantageous from the point of view of the industrial waste valorization, since the entire avocado wastes are used for the production of bioplastics, avoiding further separation processes for their valorization.
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Affiliation(s)
- Danila Merino
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego, 30, Genoa 16163, Italy
| | - Laura Bertolacci
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego, 30, Genoa 16163, Italy
| | - Uttam C. Paul
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego, 30, Genoa 16163, Italy
| | - Roberto Simonutti
- Dipartimento
di Scienza dei Materiali, Università
di Milano-Bicocca, Via
Roberto Cozzi 55, 20125 Milano, Italy
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8
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UV-Blocking, Transparent, and Antioxidant Polycyanoacrylate Films. Polymers (Basel) 2020; 12:polym12092011. [PMID: 32899256 PMCID: PMC7564323 DOI: 10.3390/polym12092011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 08/28/2020] [Accepted: 08/30/2020] [Indexed: 01/30/2023] Open
Abstract
Applications of cyanoacrylate monomers are generally limited to adhesives/glues (instant or superglues) and forensic sciences. They tend to polymerize rapidly into rigid structures when exposed to trace amounts of moisture. Transforming cyanoacrylate monomers into transparent polymeric films or coatings can open up several new applications, as they are biocompatible, biodegradable and have surgical uses. Like other acrylics, cyanoacrylate polymers are glassy and rigid. To circumvent this, we prepared transparent cyanoacrylate films by solvent casting from a readily biodegrade solvent, cyclopentanone. To improve the ductility of the films, poly(propylene carbonate) (PPC) biopolymer was used as an additive (maximum 5 wt.%) while maintaining transparency. Additionally, ductile films were functionalized with caffeic acid (maximum 2 wt.%), with no loss of transparency while establishing highly effective double functionality, i.e., antioxidant effect and effective UV-absorbing capability. Less than 25 mg antioxidant caffeic acid release per gram film was achieved within a 24-h period, conforming to food safety regulations. Within 2 h, films achieved 100% radical inhibition levels. Films displayed zero UVC (100–280 nm) and UVB (280–315 nm), and ~15% UVA (315–400 nm) radiation transmittance comparable to advanced sunscreen materials containing ZnO nanoparticles or quantum dots. Transparent films also exhibited promising water vapor and oxygen barrier properties, outperforming low-density polyethylene (LPDE) films. Several potential applications can be envisioned such as films for fatty food preservation, biofilms for sun screening, and biomedical films for free-radical inhibition.
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9
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Quilez-Molina AI, Heredia-Guerrero JA, Armirotti A, Paul UC, Athanassiou A, Bayer IS. Comparison of physicochemical, mechanical and antioxidant properties of polyvinyl alcohol films containing green tealeaves waste extracts and discarded balsamic vinegar. Food Packag Shelf Life 2020. [DOI: 10.1016/j.fpsl.2019.100445] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Guzman-Puyol S, Ceseracciu L, Tedeschi G, Marras S, Scarpellini A, Benítez JJ, Athanassiou A, Heredia-Guerrero JA. Transparent and Robust All-Cellulose Nanocomposite Packaging Materials Prepared in a Mixture of Trifluoroacetic Acid and Trifluoroacetic Anhydride. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E368. [PMID: 30841528 PMCID: PMC6473980 DOI: 10.3390/nano9030368] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/21/2019] [Accepted: 02/24/2019] [Indexed: 01/01/2023]
Abstract
All-cellulose composites with a potential application as food packaging films were prepared by dissolving microcrystalline cellulose in a mixture of trifluoroacetic acid and trifluoroacetic anhydride, adding cellulose nanofibers, and evaporating the solvents. First, the effect of the solvents on the morphology, structure, and thermal properties of the nanofibers was evaluated by atomic force microscopy (AFM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA), respectively. An important reduction in the crystallinity was observed. Then, the optical, morphological, mechanical, and water barrier properties of the nanocomposites were determined. In general, the final properties of the composites depended on the nanocellulose content. Thus, although the transparency decreased with the amount of cellulose nanofibers due to increased light scattering, normalized transmittance values were higher than 80% in all the cases. On the other hand, the best mechanical properties were achieved for concentrations of nanofibers between 5 and 9 wt.%. At higher concentrations, the cellulose nanofibers aggregated and/or folded, decreasing the mechanical parameters as confirmed analytically by modeling of the composite Young's modulus. Finally, regarding the water barrier properties, water uptake was not affected by the presence of cellulose nanofibers while water permeability was reduced because of the higher tortuosity induced by the nanocelluloses. In view of such properties, these materials are suggested as food packaging films.
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Affiliation(s)
- Susana Guzman-Puyol
- Smart Materials, Nanophysics, Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
| | - Luca Ceseracciu
- Materials Characterization Facility, Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
| | - Giacomo Tedeschi
- Smart Materials, Nanophysics, Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
| | - Sergio Marras
- Materials Characterization Facility, Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
| | - Alice Scarpellini
- Electron Microscopy Facility, Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
| | - José J Benítez
- Instituto de Ciencia de Materiales de Sevilla, Centro mixto CSIC-Universidad de Sevilla, Calle Americo Vespucio 49, Isla de la Cartuja, 41092 Sevilla, Spain.
| | - Athanassia Athanassiou
- Smart Materials, Nanophysics, Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
| | - José A Heredia-Guerrero
- Smart Materials, Nanophysics, Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
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11
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Abraham RE, Su P, Puri M, Raston CL, Zhang W. Optimisation of biorefinery production of alginate, fucoidan and laminarin from brown seaweed Durvillaea potatorum. ALGAL RES 2019. [DOI: 10.1016/j.algal.2018.101389] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Zhang X, Thomsen M. Biomolecular Composition and Revenue Explained by Interactions between Extrinsic Factors and Endogenous Rhythms of Saccharina latissima. Mar Drugs 2019; 17:E107. [PMID: 30744162 PMCID: PMC6409931 DOI: 10.3390/md17020107] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 02/06/2023] Open
Abstract
This review provides a systematic overview of the spatial and temporal variations in the content of biomolecular constituents of Saccharina latissima on the basis of 34 currently-available scientific studies containing primary measurements. We demonstrate the potential revenue of seaweed production and biorefinery systems by compiling a product portfolio of high-value extract products. An investigation into the endogenous rhythms and extrinsic factors that impact the biomolecular composition of S. latissima is presented, and key performance factors for optimizing seaweed production are identified. Besides the provisioning ecosystem service, we highlight the contribution of green-engineered seaweed production systems to the mitigation of the ongoing and historical anthropogenic disturbances of the climate balance and nutrient flows. We conclude that there are risks of mismanagement, and we stress the importance and necessity of creating an adaptive ecosystem-based management framework within a triple-helix partnership for balancing the utilization of ecosystem services and long-term resilience of aquatic environment.
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Affiliation(s)
- Xueqian Zhang
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, DK-4000 Roskilde, Denmark.
| | - Marianne Thomsen
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, DK-4000 Roskilde, Denmark.
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13
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Gustafsson J, Landberg M, Bátori V, Åkesson D, Taherzadeh MJ, Zamani A. Development of Bio-Based Films and 3D Objects from Apple Pomace. Polymers (Basel) 2019; 11:E289. [PMID: 30960273 PMCID: PMC6419029 DOI: 10.3390/polym11020289] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 01/29/2019] [Accepted: 02/06/2019] [Indexed: 12/02/2022] Open
Abstract
Extensive quantities of apple pomace are generated annually but its disposal is still challenging. This study addresses this issue by introducing a new, environmentally-friendly approach for the production of sustainable biomaterials from apple pomace, containing 55.47% free sugars and a water insoluble fraction, containing 29.42 ± 0.44% hemicelluloses, 38.99 ± 0.42% cellulose, and 22.94 ± 0.12% lignin. Solution casting and compression molding were applied to form bio-based films and 3D objects (i.e., fiberboards), respectively. Using glycerol as plasticizer resulted in highly compact films with high tensile strength and low elongation (16.49 ± 2.54 MPa and 10.78 ± 3.19%, respectively). In contrast, naturally occurring sugars in the apple pomace showed stronger plasticizing effect in the films and resulted in a fluffier and connected structure with significantly higher elongation (37.39 ± 10.38% and 55.41 ± 5.38%, respectively). Benefiting from the self-binding capacity of polysaccharides, fiberboards were prepared by compression molding at 100 °C using glycerol or naturally occurring sugars, such as plasticizer. The obtained fiberboards exhibited tensile strength of 3.02⁻5.79 MPa and elongation of 0.93%⁻1.56%. Possible applications for apple pomace biomaterials are edible/disposable tableware or food packaging.
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Affiliation(s)
- Jesper Gustafsson
- Swedish Centre for Resource Recovery, University of Borås, 50190 Borås, Sweden.
| | - Mikael Landberg
- Swedish Centre for Resource Recovery, University of Borås, 50190 Borås, Sweden.
| | - Veronika Bátori
- Swedish Centre for Resource Recovery, University of Borås, 50190 Borås, Sweden.
| | - Dan Åkesson
- Swedish Centre for Resource Recovery, University of Borås, 50190 Borås, Sweden.
| | | | - Akram Zamani
- Swedish Centre for Resource Recovery, University of Borås, 50190 Borås, Sweden.
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14
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Contardi M, Heredia-Guerrero JA, Guzman-Puyol S, Summa M, Benítez JJ, Goldoni L, Caputo G, Cusimano G, Picone P, Di Carlo M, Bertorelli R, Athanassiou A, Bayer IS. Combining dietary phenolic antioxidants with polyvinylpyrrolidone: transparent biopolymer films based on p-coumaric acid for controlled release. J Mater Chem B 2019; 7:1384-1396. [PMID: 32255009 DOI: 10.1039/c8tb03017k] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyvinylpyrrolidone (PVP) has probably been one of the most utilized pharmaceutical polymers with applications ranging from a blood plasma substitute to nanoparticle drug delivery, since its synthesis in 1939. It is a highly biocompatible, non-toxic and transparent film forming polymer. Although high solubility of PVP in aqueous environment is advantageous, it still poses several problems for some applications in which sustained targeting and release are needed or hydrophobic drug inclusion and delivery systems are to be designed. In this study, we demonstrate that a common dietary phenolic antioxidant, p-coumaric acid (PCA), can be combined with PVP covering a wide range of molar ratios by solution blending in ethanol, forming new transparent biomaterial films with antiseptic and antioxidant properties. PCA not only acts as an effective natural plasticizer but also establishes H-bonds with PVP increasing its resistance to water dissolution. PCA could be released in a sustained manner up to a period of 3 days depending on the PVP/PCA molar ratio. Sustained drug delivery potential of the films was studied using methylene blue and carminic acid as model drugs, indicating that the release can be controlled. Antioxidant and remodeling properties of the films were evaluated in vitro by free radical cation scavenging assay and in vivo on a murine model, respectively. Furthermore, the material resorption of films was slower as PCA concentration increased, as observed from the in vivo full-thickness excision model. Finally, the antibacterial activity of the films against common pathogens such as Escherichia coli and Staphylococcus aureus and the effective reduction of inflammatory agents such as matrix metallopeptidases were demonstrated. All these properties suggest that these new transparent PVP/PCA films can find a plethora of applications in pharmaceutical sciences including skin and wound care.
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Affiliation(s)
- Marco Contardi
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego, 30, Genova 16163, Italy.
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15
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Ardalan Y, Jazini M, Karimi K. Sargassum angustifolium brown macroalga as a high potential substrate for alginate and ethanol production with minimal nutrient requirement. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.10.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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