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Advisor(s)
Abstract(s)
As plantas aromáticas são usualmente utilizadas no nosso quotidiano na preparação de infusões e decocções por apresentarem
benefícios comprovados para a saúde do consumidor. A presença de compostos fenólicos poderá ser responsável
por esses efeitos. Neste trabalho, submeteram -se amostras de Matricaria recutita L. (camomila) a uma extração por
decocção para posterior caracterização química por HPLC -DAD -ESI/MS. Nessa análise foram identificados dezanove
compostos fenólicos dos quais nove flavonoides e dez ácidos fenólicos. Os ácidos fenólicos representaram o grupo
maioritário presente nas decocções de M. recutita (23,66±0,27 mg/g de extrato liofilizado), no qual quatro compostos
foram identificados como possíveis derivados do ácido cafeoil -2,7 -anidro -3 -desoxi -2 -octulopiranosónico (CDOA),
sendo o di -CDOA o ácido mais abundante (6,83±0,05 mg/g). De entre os flavonoides identificados (concentração total:
17,89±0,91 mg/g), o luteolin -O -glucurónido surgiu como o composto principal (4,80±0,54 mg/g). As flores de camomila
poderão ser consideradas para obter ingredientes com propriedades bioativas para utilização individual ou incorporação
em alimentos como conservantes naturais e/ou agentes funcionais.
Aromatic plants are commonly used in the preparation of infusions and decoctions because they have proven benefits for consumer health. The presence of phenolic compounds may be responsible for these effects. In this work, Matricaria recutita L. (chamomile) samples, were submitted to a decoction extraction and further analyzed by HPLC -DAD -ESI/MS. In the analysis, nineteen phenolic compounds were identified including nine flavonoids and ten phenolic acids. Phenolic acids represented the major group present in M. recutita decoctions (23,66±0,27 mg/g of freeze -dried extract), in which four compounds were identified as potential derivatives ofdi -caffeoyl -2,7 -anhydro -3 -deoxy -2 -octulopyranosonic acid (CDOA), being di -CDOA the most abundant acid (6,83±0,05 mg/g). Among the identified flavonoids (total concentration: 17,89±0,91 mg/g), luteolin -O -glucuronide appeared as the major compound (4,80±0,54 mg/g). Chamomile flowers may be considered to obtain ingredients with bioactive properties for individual use or incorporation into foods as natural preservatives and/or functional agents.
Aromatic plants are commonly used in the preparation of infusions and decoctions because they have proven benefits for consumer health. The presence of phenolic compounds may be responsible for these effects. In this work, Matricaria recutita L. (chamomile) samples, were submitted to a decoction extraction and further analyzed by HPLC -DAD -ESI/MS. In the analysis, nineteen phenolic compounds were identified including nine flavonoids and ten phenolic acids. Phenolic acids represented the major group present in M. recutita decoctions (23,66±0,27 mg/g of freeze -dried extract), in which four compounds were identified as potential derivatives ofdi -caffeoyl -2,7 -anhydro -3 -deoxy -2 -octulopyranosonic acid (CDOA), being di -CDOA the most abundant acid (6,83±0,05 mg/g). Among the identified flavonoids (total concentration: 17,89±0,91 mg/g), luteolin -O -glucuronide appeared as the major compound (4,80±0,54 mg/g). Chamomile flowers may be considered to obtain ingredients with bioactive properties for individual use or incorporation into foods as natural preservatives and/or functional agents.
Description
Keywords
Matricaria recutita L. Compostos fenólicos HPLC -DAD -ESI/MS
Pedagogical Context
Citation
Caleja, Cristina; Barros, Lillian; Oliveira, M.B.P.P.; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R. (2017). Caracterização do perfil fenólico de extratos aquosos de Matricaria recutita L. obtidos por decocção. Revista de Ciências Agrárias. ISSN 2183-041X. 40, nº especial, p. 136-139