Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/43877 |
Resumo: | Autohydrolysis, which is an eco-friendly technology that employs only water as extraction solvent, was used to extract antioxidant phenolic compounds from spent coffee grounds (SCG). Experimental assays were carried out using different temperatures (160 to 200 °C), liquid/solid ratios (5 to 15 ml/g SCG) and extraction times (10 to 50 min) in order to determine the conditions that maximize the extraction results. The optimum conditions to produce extracts with high content of phenolic compounds (40.36 mg GAE/g SCG) and high antioxidant activity (FRAP = 69.50 mg Fe(II)/g SCG, DPPH = 28.15 mg TE/g SCG, ABTS = 31.46 mg TE/g SCG, and TAA = 66.21 mg -TOC/g SCG) consisted in using 15 ml water/g SCG, at 200 °C during 50 min. Apart from being a green technology, autohydrolysis under optimized conditions was demonstrated to be an efficient method to extract antioxidant phenolic compounds from SCG. |
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Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee groundsAutohydrolysisSpent coffee groundsPhenolic compoundsAntioxidant activityExtraction yieldScience & TechnologyAutohydrolysis, which is an eco-friendly technology that employs only water as extraction solvent, was used to extract antioxidant phenolic compounds from spent coffee grounds (SCG). Experimental assays were carried out using different temperatures (160 to 200 °C), liquid/solid ratios (5 to 15 ml/g SCG) and extraction times (10 to 50 min) in order to determine the conditions that maximize the extraction results. The optimum conditions to produce extracts with high content of phenolic compounds (40.36 mg GAE/g SCG) and high antioxidant activity (FRAP = 69.50 mg Fe(II)/g SCG, DPPH = 28.15 mg TE/g SCG, ABTS = 31.46 mg TE/g SCG, and TAA = 66.21 mg -TOC/g SCG) consisted in using 15 ml water/g SCG, at 200 °C during 50 min. Apart from being a green technology, autohydrolysis under optimized conditions was demonstrated to be an efficient method to extract antioxidant phenolic compounds from SCG.This work was supported by the Science and Technology Foundation of Portugal (FCT - grant SFRH/BD/80948/2011); the Strategic Project PEst-OE/EQB/LA0023/2013; and the Project “Bio-Ind -Biotechnology and Bioengineering for improved Industrial and Agro-Food processes”, REF. NORTE-07-0124-FEDER-000028 cofunded by the Programa Operacional Regional do Norte (ON.2 e O Novo Norte), QREN, FEDER.ElsevierUniversidade do MinhoBallesteros, Lina F.Ramirez, Mónica J.Orrego, Carlos E.Teixeira, J. A.Mussatto, Solange I.2017-042017-04-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/43877engBallesteros, Lina F.; Ramirez, Mónica J.; Orrego, Carlos E.; Teixeira, J. A.; Mussatto, Solange I., Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds. Journal of Food Engineering, 199, 1-8, 20170260-87740260-877410.1016/j.jfoodeng.2016.11.014http://www.journals.elsevier.com/journal-of-food-engineering/info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:02:20ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds |
title |
Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds |
spellingShingle |
Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds Ballesteros, Lina F. Autohydrolysis Spent coffee grounds Phenolic compounds Antioxidant activity Extraction yield Science & Technology |
title_short |
Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds |
title_full |
Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds |
title_fullStr |
Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds |
title_full_unstemmed |
Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds |
title_sort |
Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds |
author |
Ballesteros, Lina F. |
author_facet |
Ballesteros, Lina F. Ramirez, Mónica J. Orrego, Carlos E. Teixeira, J. A. Mussatto, Solange I. |
author_role |
author |
author2 |
Ramirez, Mónica J. Orrego, Carlos E. Teixeira, J. A. Mussatto, Solange I. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Ballesteros, Lina F. Ramirez, Mónica J. Orrego, Carlos E. Teixeira, J. A. Mussatto, Solange I. |
dc.subject.por.fl_str_mv |
Autohydrolysis Spent coffee grounds Phenolic compounds Antioxidant activity Extraction yield Science & Technology |
topic |
Autohydrolysis Spent coffee grounds Phenolic compounds Antioxidant activity Extraction yield Science & Technology |
description |
Autohydrolysis, which is an eco-friendly technology that employs only water as extraction solvent, was used to extract antioxidant phenolic compounds from spent coffee grounds (SCG). Experimental assays were carried out using different temperatures (160 to 200 °C), liquid/solid ratios (5 to 15 ml/g SCG) and extraction times (10 to 50 min) in order to determine the conditions that maximize the extraction results. The optimum conditions to produce extracts with high content of phenolic compounds (40.36 mg GAE/g SCG) and high antioxidant activity (FRAP = 69.50 mg Fe(II)/g SCG, DPPH = 28.15 mg TE/g SCG, ABTS = 31.46 mg TE/g SCG, and TAA = 66.21 mg -TOC/g SCG) consisted in using 15 ml water/g SCG, at 200 °C during 50 min. Apart from being a green technology, autohydrolysis under optimized conditions was demonstrated to be an efficient method to extract antioxidant phenolic compounds from SCG. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-04 2017-04-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/43877 |
url |
http://hdl.handle.net/1822/43877 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ballesteros, Lina F.; Ramirez, Mónica J.; Orrego, Carlos E.; Teixeira, J. A.; Mussatto, Solange I., Optimization of autohydrolysis conditions to extract antioxidant phenolic compounds from spent coffee grounds. Journal of Food Engineering, 199, 1-8, 2017 0260-8774 0260-8774 10.1016/j.jfoodeng.2016.11.014 http://www.journals.elsevier.com/journal-of-food-engineering/ |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
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repository.mail.fl_str_mv |
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1777303668076314624 |