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Exploring the antioxidant potential of Helichrysum stoechas (L.) Moench phenoli...
Barroso, Marisa; Barros, Lillian; Dueñas, Montserrat; Carvalho, Ana Maria; Santos-Buelga, Celestino; Fernandes, Isabel P.; Barreiro, M.F.The present work explores the antioxidant potential of Helichrysum stoechas (L.) Moench phenoliccompounds for cosmetic applications involving the following steps: chemical characterization, microen-capsulation and incorporation into a moisturizer. Eighteen different phenolic compounds were identifiedin flowering aerial parts (decoction and hydroalcoholic extract), being 3,5-O-dicaffeoylquinic acid andmyricetin ...
Nutritional and antioxidant contributions of Laurus nobilis L. leaves: would b...
Dias, Maria Inês; Barros, Lillian; Dueñas, Montserrat; Alves, Rita C.; Oliveira, M.B.P.P.; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.Medicinal and aromatic plants are used since ancient times in folk medicine and traditional food, but also in novel pharmaceutical preparations. The controversy lies in the use of cultivated and/or wild plants presenting both advantages and disadvantages in biological, ecological but also economic terms. Herein, cultivated and wild samples of Laurus nobilis L. were chemically characterized regarding nutritional...
Phenolic profiles of cultivated, in vitro cultured and commercial samples of Me...
Barros, Lillian; Dueñas, Montserrat; Dias, Maria Inês; Sousa, Maria João; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.Melissa officinalis L. (lemon balm) is normally consumed as infusions and presents therapeutic properties such as sedative, carminative and antispasmodic, being also included in some pharmaceutical preparations. The phenolic profiles of different samples of lemon balm prepared as infusions were evaluated by HPLC-DAD-ESI/MS. The profiles were compared in order to understand the differences between cultivated, in...
Nutrients, phytochemicals and bioactivity of wild Roman chamomile: a comparison...
Guimarães, Rafaela; Barros, Lillian; Dueñas, Montserrat; Calhelha, Ricardo C.; Carvalho, Ana Maria; Santos-Buelga, Celestino; Queiroz, Maria João R.P.Roman chamomile, Chamaemelum nobile L. (Asteraceae), has been used for medicinal applications, mainly through oral dosage forms (decoctions and infusions). Herein, the nutritional characterization of C. nobile was performed, and herbal material and its decoction and infusion were submitted to an analysis of phytochemicals and bioactivity evaluation. The antioxidant activity was determined by free radicals scave...
Infusion and decoction of wild German chamomile: bioactivity and characterizati...
Guimarães, Rafaela; Barros, Lillian; Dueñas, Montserrat; Calhelha, Ricardo C.; Carvalho, Ana Maria; Santos-Buelga, Celestino; Queiroz, Maria João R.P.Natural products represent a rich source of biologically active compounds and are an example of molecular diversity, with recognized potential in drug discovery. Herein, methanol extract of Matricaria recutita L. (German chamomile) and its decoction and infusion (the most consumed preparations of this herb) were submitted to an analysis of phytochemicals and bioactivity evaluation. The antioxidant activity was ...
Characterization of phenolic compounds in wild medicinal flowers from Portugal ...
Barros, Lillian; Alves, Carlos Tiago; Dueñas, Montserrat; Silva, Sónia; Oliveira, Rosário; Carvalho, Ana Maria; Henriques, MarianaIn the present work, the phenolic compounds of Castanea sativa, Filipendula ulmaria and Rosa micrantha flowers from Northeastern Portugal were characterized by HPLC-DAD-ESI/MS. Furthermore, it was performed a screening of their antifungal potential against Candida species (C. albicans, C. glabrata, C. parapsilosis and C. tropicalis). C. sativa sample gave the highest amount of phenolic compounds (18973 ± 40 µg...
Chemical composition and antioxidant activity of dried powder formulations of A...
Carneiro, Andreia A.J.; Ferreira, Isabel C.F.R.; Dueñas, Montserrat; Barros, Lillian; Silva, Roberto; Gomes, Eleni; Santos-Buelga, CelestinoSeveral mushroom species have been pointed out as sources of antioxidant compounds, besides their important nutritional value. Agaricus blazei and Lentinus edodes are among the most studied species all over the world, but those studies focused on their fruiting bodies instead of other presentations like powdered preparations used as supplements. In the present work the chemical composition (nutrients and bioact...
Bryonia dioica, Tamus communis and Lonicera periclymenum fruits: characterizati...
Barreira, João C.M.; Pereira, Eliana; Dueñas, Montserrat; Carvalho, Ana Maria; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.Plants are being increasingly used in dermatological formulations, since their collateral effects are lower than those caused by synthetic products. Hydrogels represent efficient formulations to incorporate plant extracts, providing good percutaneous absorption, non-greasy texture and easy application. Bryonia dioica Jacq. (white-bryony), Tamus communis L. (black-bryony) and Lonicera periclymenum L. (honeysuckl...
Characterization of phenolic compounds in wild fruits from Northeastern Portugal
Guimarães, Rafaela; Barros, Lillian; Dueñas, Montserrat; Carvalho, Ana Maria; Queiroz, Maria João R.P.; Santos-Buelga, CelestinoThis study aimed to analyse the phenolic composition of wild fruits of Arbutus unedo (strawberry-tree), Prunus spinosa (blackthorn), Rosa canina and Rosa micrantha (wild roses). Analyses were performed by HPLC-DAD-ESI/MS. Prunus spinosa fruits presented the highest concentration in phenolic acids (29.78 mg/100 g dry weight), being 3-O-caffeoylquinic acid the most abundant one, and flavone/ols (57.48 mg/100 g), ...
Phenolic profile of wild fruits of Rosa canina SL. from Northeast Portugal
Guimarães, Rafaela; Barros, Lillian; Reis, Filipa S.; Dueñas, Montserrat; Carvalho, Ana Maria; Santos-Buelga, Celestino; Queiroz, Maria João R.P.Plant polyphenols are a wide group of secondary metabolites and are a common component of our diet. Flavonoids represent the most common and widely distributed group of plant phenolics, and can be further broken into classes including flavones, flavonols, flavanones, flavanols, anthocyanins and isoflavonoids. Different classes of bioactive constituents are present in Rosa canina, including phenolic compounds. R...
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