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Rensink S, van Nieuwenhuijzen EJ, Sailer MF, Struck C, Wösten HAB. Use of Aureobasidium in a sustainable economy. Appl Microbiol Biotechnol 2024; 108:202. [PMID: 38349550 PMCID: PMC10864419 DOI: 10.1007/s00253-024-13025-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Aureobasidium is omnipresent and can be isolated from air, water bodies, soil, wood, and other plant materials, as well as inorganic materials such as rocks and marble. A total of 32 species of this fungal genus have been identified at the level of DNA, of which Aureobasidium pullulans is best known. Aureobasidium is of interest for a sustainable economy because it can be used to produce a wide variety of compounds, including enzymes, polysaccharides, and biosurfactants. Moreover, it can be used to promote plant growth and protect wood and crops. To this end, Aureobasidium cells adhere to wood or plants by producing extracellular polysaccharides, thereby forming a biofilm. This biofilm provides a sustainable alternative to petrol-based coatings and toxic chemicals. This and the fact that Aureobasidium biofilms have the potential of self-repair make them a potential engineered living material avant la lettre. KEY POINTS: •Aureobasidium produces products of interest to the industry •Aureobasidium can stimulate plant growth and protect crops •Biofinish of A. pullulans is a sustainable alternative to petrol-based coatings •Aureobasidium biofilms have the potential to function as engineered living materials.
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Affiliation(s)
- Stephanie Rensink
- Department of Biology, Microbiology, Utrecht University, Padualaan 8, 3584 CH, Utrecht, the Netherlands.
- Department of Business, Building and Technology, Sustainable Building Technology, Saxion University of Applied Sciences, M.H. Tromplaan 28, 7513 AB, Enschede, the Netherlands.
| | - Elke J van Nieuwenhuijzen
- Faculty of Technology, Amsterdam University of Applied Sciences, Rhijnspoorplein 2, 1091 GC, Amsterdam, The Netherlands
| | - Michael F Sailer
- Department of Business, Building and Technology, Sustainable Building Technology, Saxion University of Applied Sciences, M.H. Tromplaan 28, 7513 AB, Enschede, the Netherlands
| | - Christian Struck
- Department of Business, Building and Technology, Sustainable Building Technology, Saxion University of Applied Sciences, M.H. Tromplaan 28, 7513 AB, Enschede, the Netherlands
| | - Han A B Wösten
- Department of Biology, Microbiology, Utrecht University, Padualaan 8, 3584 CH, Utrecht, the Netherlands
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Poohphajai F, Myronycheva O, Karlsson O, Belt T, Rautkari L, Sandak J, Gubenšek A, Zalar P, Gunde-Cimerman N, Sandak A. Fungal colonisation on wood surfaces weathered at diverse climatic conditions. Heliyon 2023; 9:e17355. [PMID: 37441395 PMCID: PMC10333622 DOI: 10.1016/j.heliyon.2023.e17355] [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: 05/29/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023] Open
Abstract
Natural weathering test at two different European climatic zones were conducted to investigate simultaneously both, the fungal colonisation and weathering process of Scots pine wood (Pinus sylvestris L.). The hypothesis was that the wood performing differently in various climate conditions might affect fungal infestation. The colour changes, wettability, and glossiness were measured as indicators of weathering progress of wood together with an assessment of fungal diversity. Different intensities in weathering, occupancy, and colonisation of fungi on wooden surface were detected. A higher number of fungal species was found on wood exposed to the warm temperate climates compared to subarctic or boreal climates. The dominant fungal species in both locations were from the genera Cladosporium and Aureobasidium.
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Affiliation(s)
- Faksawat Poohphajai
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, 00076, Aalto, Finland
- InnoRenew CoE, Livade 6a, 6310, Izola, Slovenia
| | - Olena Myronycheva
- Luleå University of Technology, Wood Science and Engineering, Forskargatan 1, 931 87, Skellefteå, Sweden
| | - Olov Karlsson
- Luleå University of Technology, Wood Science and Engineering, Forskargatan 1, 931 87, Skellefteå, Sweden
| | - Tiina Belt
- Production Systems, Natural Resources Institute Finland (Luke), Tietotie 2, 02150, Espoo, Finland
| | - Lauri Rautkari
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, 00076, Aalto, Finland
| | - Jakub Sandak
- InnoRenew CoE, Livade 6a, 6310, Izola, Slovenia
- Andrej Marušič Institute, University of Primorska, Titov trg 4, 6000, Koper, Slovenia
| | | | - Polona Zalar
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, SI-1000, Ljubljana, Slovenia
| | - Nina Gunde-Cimerman
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, SI-1000, Ljubljana, Slovenia
| | - Anna Sandak
- InnoRenew CoE, Livade 6a, 6310, Izola, Slovenia
- Andrej Marušič Institute, University of Primorska, Titov trg 4, 6000, Koper, Slovenia
- Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Glagoljaška 8, 6000, Koper, Slovenia
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Effect of Number of Impregnations of Microberlinla sp with Microcapsule Emulsion on the Performance of Self-Repairing Coatings on Wood Surfaces. COATINGS 2022. [DOI: 10.3390/coatings12070989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Embedding melamine-formaldehyde (MF) resin-coated shellac microcapsules in waterborne coatings can extend the service longevity of waterborne coatings on a wood surface to a certain extent. Due to the content limitation of self-repairing microcapsules in waterborne coatings, the effective self-healing performance time is short. With the aim of improving the self-repairing properties of self-repairing coatings on the surface of a Microberlinla sp substrate, a more effective self-healing mechanism was achieved by impregnating the ebony wood substrate several times with an MF resin-coated transparent shellac-rosin microcapsule emulsion. After the impregnation of the ebony boards with microcapsules, a waterborne acrylic resin coating containing 3.0 wt.% transparent shellac microcapsules was applied to the surface of the wood boards. The influence of the number impregnations on the surface coating’s physical properties, chemical properties, and self-repairing properties was explored. The results showed that the hardness of the surface coating on the ebony boards changed little under different numbers of impregnations. With the increasing number of impregnations, the surface coatings’ adhesion and impact strength slowly increased, the chromatic difference value was increased, and the roughness first increased and then decreased. Impregnating ebony boards with the microcapsule emulsion contributes to enhancing the aging resistance and repair performance of surface coatings on the ebony boards. When the number of impregnations was eight, the width change rate of cracks on surface self-healing coatings was 28.4%, which suggested the best repair performance among all samples. By impregnating the wood substrate with the self-healing microcapsule emulsion, the effect of the interaction between microcapsules and wood on the self-repairing properties of the surface coating was studied, contributing to the theory for further improving the self-repairing properties of waterborne coatings on wood surfaces and promoting the application and development of self-healing microcapsules.
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