Tannin extraction from heat-treated Pinus spp bark - application as an adhesive
The objective of the study was to identify the influence of heat treatment in obtaining condensable tannins compounds from Pinus spp bark residues for adhesive production. The heat treatments were: (a) bark without heat treatment (control); (b) bark exposed at 60 °C for 50 h dry; (c) bark exposed at...
| Autors principals: | , , , , , , |
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| Format: | Online |
| Idioma: | spa |
| Publicat: |
Instituto de Ecología, A.C.
2021
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| Accés en línia: | https://myb.ojs.inecol.mx/index.php/myb/article/view/2041 |
| _version_ | 1799769393271406592 |
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| author | Gonçalves, Fabricio Gomes Chaves, Izabella Luzia Silva Fassarella, Michelângelo Vargas Brito, Alice Soares Silva, Émilly Soares Gomes da López, Yonny Martinez Oliveira, Rafael Espósito Gonçalves de |
| author_facet | Gonçalves, Fabricio Gomes Chaves, Izabella Luzia Silva Fassarella, Michelângelo Vargas Brito, Alice Soares Silva, Émilly Soares Gomes da López, Yonny Martinez Oliveira, Rafael Espósito Gonçalves de |
| author_sort | Gonçalves, Fabricio Gomes |
| collection | MYB |
| description | The objective of the study was to identify the influence of heat treatment in obtaining condensable tannins compounds from Pinus spp bark residues for adhesive production. The heat treatments were: (a) bark without heat treatment (control); (b) bark exposed at 60 °C for 50 h dry; (c) bark exposed at 120 °C for 10 h in steam; (d) bark attached to the trunk exposed at 120 °C for 10 h in steam. For the chemical characterization of the material, the crust was ground and classified, the tannic compounds were extracted under reflux with distilled water for 2 h, and in addition, sodium carbonate and sodium sulphite salts were added, both at 5% in relation to dry mass. The properties of commercial tannin from Acacia mearnsii (acacia negra) were evaluated as the control. The tannin extraction process was carried out in an autoclave, and then used for the evaluation of properties such as viscosity, pH, gel formation time, solids content and density. It was determined that both the bark exposed at 120 °C for 10 h in steam and the bark adhered to the trunk (subjected to steam at 120 °C for 10 hours) for both salts, have higher tannin yields. Tannic extracts obtained from sodium carbonate have an alkaline structure, high viscosity, and shorter gel formation time. However, extracts obtained from sodium sulphite provide an acidic character and solids content close to those found in aqueous tannic extracts obtained from black acacia. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-2041 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2021 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-20412022-11-29T22:30:13Z Tannin extraction from heat-treated Pinus spp bark - application as an adhesive Extracción de taninos de la corteza de Pinus spp tratada térmicamente – aplicación como adhesivo Gonçalves, Fabricio Gomes Chaves, Izabella Luzia Silva Fassarella, Michelângelo Vargas Brito, Alice Soares Silva, Émilly Soares Gomes da López, Yonny Martinez Oliveira, Rafael Espósito Gonçalves de polifenoles residuo forestal tratamiento térmico rendimiento tánico propiedades tecnológicas sustancias fenólicas polyphenols technological properties tannic yield forest residue phenolic substances heat treatment The objective of the study was to identify the influence of heat treatment in obtaining condensable tannins compounds from Pinus spp bark residues for adhesive production. The heat treatments were: (a) bark without heat treatment (control); (b) bark exposed at 60 °C for 50 h dry; (c) bark exposed at 120 °C for 10 h in steam; (d) bark attached to the trunk exposed at 120 °C for 10 h in steam. For the chemical characterization of the material, the crust was ground and classified, the tannic compounds were extracted under reflux with distilled water for 2 h, and in addition, sodium carbonate and sodium sulphite salts were added, both at 5% in relation to dry mass. The properties of commercial tannin from Acacia mearnsii (acacia negra) were evaluated as the control. The tannin extraction process was carried out in an autoclave, and then used for the evaluation of properties such as viscosity, pH, gel formation time, solids content and density. It was determined that both the bark exposed at 120 °C for 10 h in steam and the bark adhered to the trunk (subjected to steam at 120 °C for 10 hours) for both salts, have higher tannin yields. Tannic extracts obtained from sodium carbonate have an alkaline structure, high viscosity, and shorter gel formation time. However, extracts obtained from sodium sulphite provide an acidic character and solids content close to those found in aqueous tannic extracts obtained from black acacia. Se identificó la influencia del tratamiento térmico en la obtención de compuestos tánicos condensables a partir de residuos de corteza de Pinus spp para la producción de adhesivo. Los tratamientos térmicos fueron: (a) corteza sin tratamiento térmico (testigo); (b) corteza expuesta a 60 °C durante 50 h en seco; (c) corteza expuesta a 120 °C durante 10 h en vapor; (d) corteza adherida al tronco expuesta a 120 °C durante 10 h en vapor. Para su caracterización química, la corteza fue molida y clasificada. Se extrajeron los compuestos tánicos mediante reflujo con agua destilada durante 2 h; se adicionaron sales de carbonato de sodio y sulfito de sodio, ambos a 5% en relación con la masa seca. Para el testigo fueron evaluadas las propiedades del tanino comercial de Acacia mearnsii (acacia negra). El proceso de extracción de taninos fue realizado en autoclave y se evaluaron las siguientes propiedades: viscosidad, pH, tiempo de formación de gel, contenido de sólidos y densidad. Tanto la corteza expuesta a 120 °C durante 10 horas en vapor como la adherida al tronco sometida a 120 °C a vapor durante 10 h, para ambas sales, exhibieron los mayores rendimientos de taninos. Los extractos tánicos obtenidos a partir de carbonato de sodio presentaron una estructura alcalina, alta viscosidad y menor tiempo de formación de gel. Sin embargo, los extractos obtenidos a partir de sulfito de sodio proporcionaron un carácter ácido y contenido de sólidos próximos a los encontrados en los extractos tánicos acuosos obtenido de la acacia negra. Instituto de Ecología, A.C. 2021-07-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf text/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/2041 10.21829/myb.2021.2712041 Madera y Bosques; Vol. 27 No. 1 (2021): Spring 2021 Madera y Bosques; Vol. 27 Núm. 1 (2021): Primavera 2021 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/2041/2230 https://myb.ojs.inecol.mx/index.php/myb/article/view/2041/2234 10.21829/myb.2018.243324 10.21829/myb.2018.241332 Derechos de autor 2021 Madera y Bosques http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Gonçalves, Fabricio Gomes Chaves, Izabella Luzia Silva Fassarella, Michelângelo Vargas Brito, Alice Soares Silva, Émilly Soares Gomes da López, Yonny Martinez Oliveira, Rafael Espósito Gonçalves de Tannin extraction from heat-treated Pinus spp bark - application as an adhesive |
| title | Tannin extraction from heat-treated Pinus spp bark - application as an adhesive |
| title_full | Tannin extraction from heat-treated Pinus spp bark - application as an adhesive |
| title_fullStr | Tannin extraction from heat-treated Pinus spp bark - application as an adhesive |
| title_full_unstemmed | Tannin extraction from heat-treated Pinus spp bark - application as an adhesive |
| title_short | Tannin extraction from heat-treated Pinus spp bark - application as an adhesive |
| title_sort | tannin extraction from heat-treated pinus spp bark - application as an adhesive |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/2041 |
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