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Dodero A, Castellano M, Lova P, Ottonelli M, Brunengo E, Vicini S, Alloisio M. Composite Poly(vinyl alcohol)-Based Nanofibers Embedding Differently-Shaped Gold Nanoparticles: Preparation and Characterization. Polymers (Basel) 2021; 13:polym13101604. [PMID: 34065708 PMCID: PMC8156238 DOI: 10.3390/polym13101604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/03/2021] [Accepted: 05/14/2021] [Indexed: 12/21/2022] Open
Abstract
Poly(vinyl alcohol) nanofibrous mats containing ad hoc synthesized gold nanostructures were prepared via a single-step electrospinning procedure and investigated as a novel composite platform with several potential applications. Specifically, the effect of differently shaped and sized gold nanostructures on the resulting mat physical-chemical properties was investigated. In detail, nearly spherical nanoparticles and nanorods were first synthesized through a chemical reduction of gold precursors in water by using (hexadecyl)trimethylammonium bromide as the stabilizing agent. These nanostructures were then dispersed in poly(vinyl alcohol) aqueous solutions to prepare nanofibrous mats, which were then stabilized via a humble thermal treatment able to enhance their thermal stability and water resistance. Remarkably, the nanostructure type was proven to influence the mesh morphology, with the small spherical nanoparticles and the large nanorods leading to thinner well defined or bigger defect-rich nanofibers, respectively. Finally, the good mechanical properties shown by the prepared composite mats suggest their ease of handleability thereby opening new perspective applications.
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Affiliation(s)
- Andrea Dodero
- Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecanso 31, 16146 Genoa, Italy; (M.C.); (P.L.); (M.O.); (S.V.)
- Correspondence: (A.D.); (M.A.); Tel.: +39-010-353-8726 (A.D.); +39-010-335-6133 (M.A.)
| | - Maila Castellano
- Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecanso 31, 16146 Genoa, Italy; (M.C.); (P.L.); (M.O.); (S.V.)
| | - Paola Lova
- Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecanso 31, 16146 Genoa, Italy; (M.C.); (P.L.); (M.O.); (S.V.)
| | - Massimo Ottonelli
- Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecanso 31, 16146 Genoa, Italy; (M.C.); (P.L.); (M.O.); (S.V.)
| | - Elisabetta Brunengo
- Institute of Chemical Sciences and Technologies “Giulio Natta” (SCITEC), Italian National Research Council (CNR), Via De Marini 6, 16149 Genova, Italy;
| | - Silvia Vicini
- Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecanso 31, 16146 Genoa, Italy; (M.C.); (P.L.); (M.O.); (S.V.)
| | - Marina Alloisio
- Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecanso 31, 16146 Genoa, Italy; (M.C.); (P.L.); (M.O.); (S.V.)
- Correspondence: (A.D.); (M.A.); Tel.: +39-010-353-8726 (A.D.); +39-010-335-6133 (M.A.)
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Intelligent Packaging for Real-Time Monitoring of Food-Quality: Current and Future Developments. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11083532] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Food packaging encompasses the topical role of preserving food, hence, extending the shelf-life, while ensuring the highest quality and safety along the production chain as well as during storage. Intelligent food packaging further develops the functions of traditional packages by introducing the capability of continuously monitoring food quality during the whole chain to assess and reduce the insurgence of food-borne disease and food waste. To this purpose, several sensing systems based on different food quality indicators have been proposed in recent years, but commercial applications remain a challenge. This review provides a critical summary of responsive systems employed in the real-time monitoring of food quality and preservation state. First, food quality indicators are briefly presented, and subsequently, their exploitation to fabricate intelligent packaging based on responsive materials is discussed. Finally, current challenges and future trends are reviewed to highlight the importance of concentrating efforts on developing new functional solutions.
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Dodero A, Schlatter G, Hébraud A, Vicini S, Castellano M. Polymer-free cyclodextrin and natural polymer-cyclodextrin electrospun nanofibers: A comprehensive review on current applications and future perspectives. Carbohydr Polym 2021; 264:118042. [PMID: 33910745 DOI: 10.1016/j.carbpol.2021.118042] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/31/2021] [Accepted: 04/03/2021] [Indexed: 02/07/2023]
Abstract
The present review discusses the use of cyclodextrins and their derivatives to prepare electrospun nanofibers with specific features. Cyclodextrins, owing to their unique capability to form inclusion complexes with hydrophobic and volatile molecules, can indeed facilitate the encapsulation of bioactive compounds in electrospun nanofibers allowing fast-dissolving products for food, biomedical, and pharmaceutical purposes, filtering materials for wastewater and air purification, as well as a variety of other technological applications. Additionally, cyclodextrins can improve the processability of naturally occurring biopolymers helping the fabrication of "green" materials with a strong industrial relevance. Hence, this review provides a comprehensive state-of-the-art of different cyclodextrins-based nanofibers including those made of pure cyclodextrins, of polycyclodextrins, and those made of natural biopolymer functionalized with cyclodextrins. To this end, the advantages and disadvantages of such approaches and their possible applications are investigated along with the current limitations in the exploitation of electrospinning at the industrial level.
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Affiliation(s)
- Andrea Dodero
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, Genoa, 16146, Italy
| | - Guy Schlatter
- Institute of Chemistry and Processes for Energy, Environment and Health (ICPEES), CNRS UMR 7515, ECPM - University of Strasbourg, 25 Rue Becquerel, Strasbourg, 67087, France.
| | - Anne Hébraud
- Institute of Chemistry and Processes for Energy, Environment and Health (ICPEES), CNRS UMR 7515, ECPM - University of Strasbourg, 25 Rue Becquerel, Strasbourg, 67087, France
| | - Silvia Vicini
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, Genoa, 16146, Italy
| | - Maila Castellano
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, Genoa, 16146, Italy.
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Dodero A, Donati I, Scarfì S, Mirata S, Alberti S, Lova P, Comoretto D, Alloisio M, Vicini S, Castellano M. Effect of sodium alginate molecular structure on electrospun membrane cell adhesion. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 124:112067. [PMID: 33947560 DOI: 10.1016/j.msec.2021.112067] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 02/19/2021] [Accepted: 03/16/2021] [Indexed: 02/09/2023]
Abstract
Alginate-based electrospun nanofibers prepared via electrospinning technique represent a class of materials with promising applications in the biomedical and pharmaceutical industries. However, to date, the effect of alginate molecular mass and block composition on the biological response of such systems remains to some extent unclear. As such, in the present work, three alginates (i.e., M.pyr, L.hyp, A.nod) with different molecular features are employed to prepare nanofibers whose ability to promote cell adhesion is explored by using both skin and bone cell lines. Initially, a preliminary investigation of the raw materials is carried out via rheological and zeta-potential measurements to determine the different grade of polyelectrolyte behaviour of the alginate samples. Specifically, both the molecular mass and block composition are found to be important factors affecting the alginate response, with long chains and a predominance of guluronic moieties leading to a marked polyelectrolyte nature (i.e., lower dependence of the solution viscosity upon the polymer concentration). Subsequently, physically crosslinked alginate nanofibrous mats are first morphologically characterized via both scanning electron and atomic force microscopy, which show a homogenous and defect-free structure, and their biological response is then evaluated. Noticeably, fibroblast and keratinocyte cell lines do not show significant differences in terms of cell adhesion on the three mats (i.e., 30-40% and 10-20% with respect to the seeded cells, respectively), with the formers presenting a greater affinity toward the alginate-based nanofibers. Conversely, both the investigated osteoblast cells are characterized by a distinct behaviour depending on the alginate type. Specifically, polysaccharide samples with an evident polyelectrolyte nature are found to better promote cell viability (i.e., cell adhesion in the range 15-36% with respect to seeded cells) compared to the ones displaying a nearly neutral behaviour (i.e., cell adhesion in the range 5-25% with respect to seeded cells). Therefore, the obtained results, despite being preliminary, suggest that the alginate type (i.e., molecular structure properties) may play a topical role in conditioning the efficiency of healing patches for bone reparation, but it has a negligible effect in the case of skin regeneration.
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Affiliation(s)
- Andrea Dodero
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genoa, Italy
| | - Ivan Donati
- Department of Life Sciences, University of Trieste, Via L. Giorgieri 5, 34127 Trieste, Italy.
| | - Sonia Scarfì
- Department of Earth, Environment and Life Sciences, University of Genoa, Via Pastore 3, 16132 Genoa, Italy; Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research (Centro 3R), Italy
| | - Serena Mirata
- Department of Earth, Environment and Life Sciences, University of Genoa, Via Pastore 3, 16132 Genoa, Italy
| | - Stefano Alberti
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genoa, Italy
| | - Paola Lova
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genoa, Italy
| | - Davide Comoretto
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genoa, Italy
| | - Marina Alloisio
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genoa, Italy
| | - Silvia Vicini
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genoa, Italy
| | - Maila Castellano
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genoa, Italy.
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Dodero A, Vicini S, Lova P, Alloisio M, Castellano M. Nanocomposite alginate-based electrospun membranes as novel adsorbent systems. Int J Biol Macromol 2020; 165:1939-1948. [DOI: 10.1016/j.ijbiomac.2020.10.116] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/17/2020] [Accepted: 10/14/2020] [Indexed: 12/20/2022]
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