Autor(es):
Silveira, Tayse Ferreira ; Echegaray, Noemí ; Guimarães, Rafaela ; Lemos, André ; Pires, Tânia C.S.P. ; Ferreira, Isabel C.F.R. ; Alves, Maria José ; Barros, Lillian
Data: 2025
Identificador Persistente: http://hdl.handle.net/10198/30467
Origem: Biblioteca Digital do IPB
Projeto/bolsa:
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT;
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00690%2F2020/PT;
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT;
Assunto(s): Natural mineral waters; Functional beverage; Bioactive properties; Minerals; Chromatography
Descrição
German chamomile (GC) and thermal water (TW) are widely known for their biological properties. This study explored whether combining GC with TW could promote an improvement in the bioactivities of GC infusions compared to using drinking water (DW). DW was tested at 100 ◦C (GC-100DW) and TW at both 100 ◦C (GC-100TW) and 60 ◦C (GC-60TW). The use of TW for preparing infusions was associated with the reduction of the number and concentration of extracted phenolic compounds, with GC-60TW showing the lowest levels. It was also associated with a decrease in the antioxidant activity of the samples, as indicated by lower ORAC values and higher EC50 levels for TBARS. However, GC infusions prepared with TW, particularly GC-100TW, exhibited higher antibacterial and antifungal activities. These findings suggest that while TW’s high mineral content affected phenolic extraction and antioxidant potential, it was associated with enhanced antimicrobial activity, partially confirming our hypothesis.
The authors are grateful to the Fundação “La Caixa” and to FCT for the financial support through Project “Aquae Vitae - Água Termal como fonte de vida e Saúde”, Promove Mobilizador “O futuro do Interior,” call 2020. National funds also supported this work through FCT/MCTES (PIDDAC): CIMO, UIDB/00690/2020 (DOI: 10.54499/UIDB/00690/ 2020) and UIDP/00690/2020 (DOI: 10.54499/UIDP/00690/2020); and SusTEC, LA/P/0007/2020 (DOI: 10.54499/LA/P/0007/2020). L. Barros thanks FCT through the institutional scientific employment program–contract for her contract (CEEC-INST, DOI: 10.54499/CEECINST/0010/2021/CP2793/CT0002). T. F.F. da Silveira, thanks to Fundação BPI La Caixa, within the project titled “AquaeVitae”, for her research contract. N. Echegaray acknowledges Axencia Galega de Innovaci´on (GAIN) for granting a postdoctoral scholarship (grant number IN606B- 2022/006). R. Guimarães and A. Lemos acknowledge national public funding through “Investimento RE-C05-i02 – Missão Interface N.◦01/ C05-i02/2022”, a project supported under the PRR (www.recuperarportugal.gov.pt), and financed by the European Union/Next Generation EU.
