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Chełminiak-Dudkiewicz D, Smolarkiewicz-Wyczachowski A, Ziegler-Borowska M, Kaczmarek H. Photochemical stability of chitosan films doped with cannabis oil. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 251:112850. [PMID: 38277961 DOI: 10.1016/j.jphotobiol.2024.112850] [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: 11/11/2023] [Revised: 01/03/2024] [Accepted: 01/22/2024] [Indexed: 01/28/2024]
Abstract
The effect of UV radiation from three different sources on chitosan (CS) films containing the addition of 10% by weight of cannabis oil was investigated. Cannabis oil (CBD) alone exposed to UV is unstable, but its photostability significantly increases in the chitosan matrix. The course of photochemical reactions, studied by FTIR spectroscopy, is slow and inefficient in chitosan with CBD, even under high-energy UV sources. The research also included chitosan films with CBD cross-linked with dialdehyde starch (DAS). Using AFM microscopy and contact angle measurements, the morphology and surface properties of prepared chitosan films with CBD were investigated, respectively. It was found that CBD embedded in CS is characterized by the best photostability under the influence of an LED emitting long-wave radiation. Using a monochromatic and polychromatic UV lamp (HPK and UV-C) emitting high-energy radiation, gradual degradation accompanied by oxidation was observed, both in the CS chains and in the CBD additive. Additionally, changes in surface properties are observed during UV irradiation. It was concluded that CS protects CBD against photodegradation, and a further improvement in photochemical stability is achieved after system cross-linking with DAS.
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Affiliation(s)
| | | | - Marta Ziegler-Borowska
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
| | - Halina Kaczmarek
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
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Meynaud S, Huet G, Brulé D, Gardrat C, Poinssot B, Coma V. Impact of UV Irradiation on the Chitosan Bioactivity for Biopesticide Applications. Molecules 2023; 28:4954. [PMID: 37446616 DOI: 10.3390/molecules28134954] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/14/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Chitosan is known for its antimicrobial and antifungal properties that make it a promising candidate for plant protection. However, when sprayed in open fields, the bioactivity of chitosan significantly diminishes, suggesting a possible influence of sunlight on chitosan structure. This study aimed to investigate the effects of UV radiation, by using artificial UV sources simulating sunlight, on the stability of chitosan. A powdered chitosan with a low polymerization degree was selected and analyzed using various physicochemical methods, both before and after irradiation. Some minor differences appeared. UV spectra analysis revealed the disappearance of initially present chromophores and the emergence of a new band around 340 nm, potentially indicating the formation of carbonyl compounds. However, elemental analysis, MALDI-TOF spectra, polymerization degree, and infrared spectra did not exhibit any clear structural modifications of chitosan. Interestingly, irradiated powdered chitosan samples maintained their bioactivity, including their eliciting and antifungal properties. In the case of grapevine, irradiated chitosan demonstrated effectiveness in controlling grapevine diseases such as downy mildew, contradicting the assumption that sunlight is responsible for the decreased effectiveness of chitosan in open field conditions.
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Affiliation(s)
- Solène Meynaud
- Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, 16 Avenue Pey-Berland, F-33600 Pessac, France
| | - Gaël Huet
- Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, 16 Avenue Pey-Berland, F-33600 Pessac, France
| | - Daphnée Brulé
- Agroécologie, CNRS, INRAE, Institut Agro, University Bourgogne, F-21000 Dijon, France
| | - Christian Gardrat
- Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, 16 Avenue Pey-Berland, F-33600 Pessac, France
| | - Benoit Poinssot
- Agroécologie, CNRS, INRAE, Institut Agro, University Bourgogne, F-21000 Dijon, France
| | - Véronique Coma
- Laboratoire de Chimie des Polymères Organiques, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, 16 Avenue Pey-Berland, F-33600 Pessac, France
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Kaczmarek-Szczepańska B, Wekwejt M, Mazur O, Zasada L, Pałubicka A, Olewnik-Kruszkowska E. The Physicochemical and Antibacterial Properties of Chitosan-Based Materials Modified with Phenolic Acids Irradiated by UVC Light. Int J Mol Sci 2021; 22:6472. [PMID: 34208782 PMCID: PMC8235692 DOI: 10.3390/ijms22126472] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/07/2021] [Accepted: 06/14/2021] [Indexed: 11/17/2022] Open
Abstract
This paper concerns the physicochemical properties of chitosan/phenolic acid thin films irradiated by ultraviolet radiation with wavelengths between 200 and 290 nm (UVC) light. We investigated the preparation and characterization of thin films based on chitosan (CTS) with tannic (TA), caffeic (CA) and ferulic acid (FA) addition as potential food-packaging materials. Such materials were then exposed to the UVC light (254 nm) for 1 and 2 h to perform the sterilization process. Different properties of thin films before and after irradiation were determined by various methods such as Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM), differential scanning calorimeter (DSC), mechanical properties and by the surface free energy determination. Moreover, the antimicrobial activity of the films and their potential to reduce the risk of contamination was assessed. The results showed that the phenolic acid improving properties of chitosan-based films, short UVC radiation may be used as sterilization method for those films, and also that the addition of ferulic acid obtains effective antimicrobial activity, which have great benefit for food packing applications.
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Affiliation(s)
- Beata Kaczmarek-Szczepańska
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Toruń, Poland; (O.M.); (L.Z.)
| | - Marcin Wekwejt
- Department of Biomaterials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 80-008 Gdańsk, Poland;
| | - Olha Mazur
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Toruń, Poland; (O.M.); (L.Z.)
| | - Lidia Zasada
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Toruń, Poland; (O.M.); (L.Z.)
| | - Anna Pałubicka
- Department of Laboratory Diagnostics and Microbiology with Blood Bank, Specialist Hospital in Kościerzyna, 83-400 Kościerzyna, Poland;
| | - Ewa Olewnik-Kruszkowska
- Physical Chemistry and Physicochemistry of Polymers, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Toruń, Poland;
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Effect of swift heavy ions irradiation on physicochemical and dielectric properties of chitosan and chitosan-Ag nanocomposites. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2020.109288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bussiere PO, Gardette JL, Rapp G, Masson C, Therias S. New insights into the mechanism of photodegradation of chitosan. Carbohydr Polym 2021; 259:117715. [PMID: 33673991 DOI: 10.1016/j.carbpol.2021.117715] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 01/18/2021] [Accepted: 01/24/2021] [Indexed: 11/15/2022]
Abstract
Chitosan films were subjected to accelerated artificial weathering at λ>300 nm and 60 °C in the presence of O2. The resulting variations in the chemical structure were characterized by IR spectroscopy and UV-vis spectroscopy, and a photooxidation mechanism was proposed based on the identified oxidation photoproducts. The formation of gluconolactone derivatives leading to chain scissions was shown. In addition, low molecular weight photoproducts, which accounted for chitosan deacetylation, were detected. Furthermore, crosslinking reactions occurred, as revealed by gel fraction characterization. Variations in the mechanical and surface properties were characterized by AFM, and the reduction in macroscopic properties was correlated with the structural changes observed at the molecular scale by a multiscale approach.
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Affiliation(s)
- Pierre-Olivier Bussiere
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, Clermont-Ferrand, F-63000, France.
| | - Jean-Luc Gardette
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, Clermont-Ferrand, F-63000, France.
| | - Géraldine Rapp
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, Clermont-Ferrand, F-63000, France.
| | - Claire Masson
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, Clermont-Ferrand, F-63000, France.
| | - Sandrine Therias
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, Clermont-Ferrand, F-63000, France.
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Kianfar P, Vitale A, Dalle Vacche S, Bongiovanni R. Photo-crosslinking of chitosan/poly(ethylene oxide) electrospun nanofibers. Carbohydr Polym 2019; 217:144-151. [DOI: 10.1016/j.carbpol.2019.04.062] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 11/28/2022]
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