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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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]
Total Authors: 8
Affiliation:
[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
Total Affiliations: 3
Document type: Journal article
Source: LWT-FOOD SCIENCE AND TECHNOLOGY; v. 117, JAN 2019.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 16/20016-7 - Extraction of bioactive compounds from husks of pomegranate (Punica granatum L.) using pressurized liquids assisted by ultrasound
Grantee:Mariana Pacífico dos Santos
Support type: Scholarships in Brazil - Master
FAPESP's process: 16/19930-6 - Evaluation of the extraction with pressurized liquid assisted by ultrasound coupled to the solid phase extraction for the purification of phenolic compounds from tea (Camellia sinensis)
Grantee:Mariana Corrêa de Souza
Support type: Scholarships in Brazil - Master
FAPESP's process: 18/17089-8 - Separation of bioactive compounds from black tea and mate by on-line coupling of pressurized liquid extraction with an adsorbent and evaluation of their antimicrobial potential
Grantee:Mariana Corrêa de Souza
Support type: Scholarships in Brazil - Doctorate (Direct)