Biodegradation of 2,5-dimethylpyrazine in gas and liquid phase by the fungus Fusarium solani

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dc.coverageDOI: 10.1002/jctb.6903
dc.creatorAraya, Blanca
dc.creatorDiaz, Camilo
dc.creatorMartín, Jessica San
dc.creatorVergara-Fernández, Alberto
dc.creatorAroca, Germán
dc.creatorScott, Felipe
dc.date2021
dc.date.accessioned2025-11-18T19:41:31Z
dc.date.available2025-11-18T19:41:31Z
dc.description<p>BACKGROUND: Alkylpyrazines are odorous compounds conferring pleasant aromas to baked and roasted foods. However, they are also emitted during food processing, creating a nuisance for the operators and the community. Only a few bacterial isolates have been shown to degrade 2,5-methylpyrazine (DMP), as a model alkylpyrazine. This work aimed to study the ability of DMP biodegradation by the filamentous fungus Fusarium solani. RESULTS: Evidence of the degradation of DMP was collected in axenic cultures of F. solani in liquid mineral medium and over a saturated solid support using DMP as the sole carbon and energy source. DMP was used for growth as evidenced by the formation of an abundant aerial mycelium over a solid support, accompanied by the production of 70 ppm CO<sub>2</sub> mg<sup>−1</sup> dry biomass, and by its consumption in liquid media at a rate of 58.3 mg g<sup>−1</sup> biomass h<sup>−1</sup>, a value comparable to those reported for bacteria. A non-axenic biofilter was mounted, fed with a DMP-laden air stream, and operated for 40 days. The maximum DMP elimination capacity achieved was 8.5 g m<sup>−3</sup> h<sup>−1</sup> at an inlet load of 11.3 g m<sup>−3</sup> h<sup>−1</sup> (an 80% relative efficiency). CONCLUSION: Fusarium solani uses DMP as a carbon source, showing great potential for its abatement in a biofilter. High-throughput DNA sequencing of biofilter samples showed that it was the most representative member of the community, with a relative abundance surpassing 97%, indicating that it played a pivotal role in the biofilter.</p>eng
dc.descriptionBACKGROUND<br/>Alkylpyrazines are odorous compounds conferring pleasant aromas to baked and roasted foods. However, they are also emitted during food processing, creating a nuisance for the operators and the community. Only a few bacterial isolates have been shown to degrade 2,5-methylpyrazine (DMP), as a model alkylpyrazine. This work aimed to study the ability of DMP biodegradation by the filamentous fungus Fusarium solani.<br/><br/>RESULTS<br/>Evidence of the degradation of DMP was collected in axenic cultures of F. solani in liquid mineral medium and over a saturated solid support using DMP as the sole carbon and energy source. DMP was used for growth as evidenced by the formation of an abundant aerial mycelium over a solid support, accompanied by the production of 70 ppm CO2 mg−1 dry biomass, and by its consumption in liquid media at a rate of 58.3 mg g−1 biomass h−1, a value comparable to those reported for bacteria. A non-axenic biofilter was mounted, fed with a DMP-laden air stream, and operated for 40 days. The maximum DMP elimination capacity achieved was 8.5 g m−3 h−1 at an inlet load of 11.3 g m−3 h−1 (an 80% relative efficiency).<br/><br/>CONCLUSION<br/>Fusarium solani uses DMP as a carbon source, showing great potential for its abatement in a biofilter. High-throughput DNA sequencing of biofilter samples showed that it was the most representative member of the community, with a relative abundance surpassing 97%, indicating that it played a pivotal role in the biofilter. © 2021 Society of Chemical Industry (SCI).spa
dc.descriptionBACKGROUND: Alkylpyrazines are odorous compounds conferring pleasant aromas to baked and roasted foods. However, they are also emitted during food processing, creating a nuisance for the operators and the community. Only a few bacterial isolates have been shown to degrade 2,5-methylpyrazine (DMP), as a model alkylpyrazine. This work aimed to study the ability of DMP biodegradation by the filamentous fungus Fusarium solani. RESULTS: Evidence of the degradation of DMP was collected in axenic cultures of F. solani in liquid mineral medium and over a saturated solid support using DMP as the sole carbon and energy source. DMP was used for growth as evidenced by the formation of an abundant aerial mycelium over a solid support, accompanied by the production of 70 ppm CO2 mg−1 dry biomass, and by its consumption in liquid media at a rate of 58.3 mg g−1 biomass h−1, a value comparable to those reported for bacteria. A non-axenic biofilter was mounted, fed with a DMP-laden air stream, and operated for 40 days. The maximum DMP elimination capacity achieved was 8.5 g m−3 h−1 at an inlet load of 11.3 g m−3 h−1 (an 80% relative efficiency). CONCLUSION: Fusarium solani uses DMP as a carbon source, showing great potential for its abatement in a biofilter. High-throughput DNA sequencing of biofilter samples showed that it was the most representative member of the community, with a relative abundance surpassing 97%, indicating that it played a pivotal role in the biofilter. © 2021 Society of Chemical Industry (SCI).eng
dc.identifierhttps://investigadores.uandes.cl/en/publications/1e006e0b-595f-4cd5-b846-2ea5326ddc45
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/51855
dc.languageeng
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.sourcevol.97 (2021) nr.6 p.1408-1415
dc.subject2,5-dimethylpyrazine
dc.subjectFusarium solani
dc.subjectbiofiltration
dc.subjectfungi biofiltration
dc.subjectpyrazine
dc.titleBiodegradation of 2,5-dimethylpyrazine in gas and liquid phase by the fungus Fusarium solanieng
dc.typeArticleeng
dc.typeArtículospa
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