Isolation of gallic acid, caffeine and flavonols from black tea by on-line coupling of pressurized liquid extraction with an adsorbent for the production of functional bakery products

Autor(es)

Souza, Mariana C. ^[1] ; Santos, Mariana P. ^[1] ; Sumere, Beatriz R. ^[1] ; Silva, Laise C. ^[1] ; Cunha, Diogo T. ^[1] ; Martinez, Julian ^[2] ; Barbero, Gerardo F. ^[3] ; Rostagno, Mauricio A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, UNICAMP, Sch Appl Sci, Rua Pedro Zaccaria 1300, BR-13484350 Limeira, SP - Brazil

^[2] Univ Estadual Campinas, UNICAMP, Sch Food Engn, Rua Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

^[3] Univ Cadiz, IVAGRO, Dept Analyt Chem, Avd Republ Saharaui, Cadiz 11510 - Spain

• Tipo de documento: Artigo Científico
• Fonte: LWT-FOOD SCIENCE AND TECHNOLOGY; v. 117, JAN 2019.
• Citações Web of Science: 0

Resumo

The objective of this work was to evaluate the on-line coupling of pressurized liquid extraction with an adsorbent for the simultaneous extraction and separation of flavonols of black tea, producing a concentrated extract that could be used as ingredient for the production of functional bakery products. After the evaluation of different adsorbents, extraction temperatures and solvents, a two-stage process was developed which was capable of producing three extracts: one with high concentration of gallic acid (78.97 +/- 5.49 mg/L), another one with high concentration of caffeine (109.72 +/- 3.15 mg/L) and a highly concentrated flavonol extract (322.0 +/- 4.50 mg/L). The developed method uses greener solvents (water and ethanol) and is capable of producing higher flavonol (similar to 50%) yields than conventional methods. The introduction of the flavonol extract in the dough can be used for the development of functional bakery since compounds were stable under processing conditions. (AU)

• Processo FAPESP: 16/20016-7 - Extração de compostos bioativos a partir da casca de Roma (Punica granatum L.) utilizando líquidos pressurizados assistido por ultrassom
• Beneficiário: Mariana Pacífico dos Santos
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 16/19930-6 - Avaliação da extração com líquidos pressurizados assistida por ultrassom acoplada à extração em fase sólida para a purificação de compostos fenólicos de chá (Camellia sinensis)
• Beneficiário: Mariana Corrêa de Souza
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 18/17089-8 - Separação de compostos bioativos presentes no chá preto e mate pela extração com líquidos pressurizados acoplada em linha com um adsorvente e avaliação de seu potencial antimicrobiano
• Beneficiário: Mariana Corrêa de Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto