Filipa Reis - Academia.edu (original) (raw)

Papers by Filipa Reis

IPATIMUP integrates the i3S Research Unit, which is partially supported by FCT, the Portuguese Fo... more IPATIMUP integrates the i3S Research Unit, which is partially supported by FCT, the Portuguese Foundation for Science and Technology. The authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for the grant of F.S. Reis (SFRH/BD/111753/2015) and L. Barros (SFRH/BPD/107855/2015), and FCT and FEDER for CIMO (UID/AGR/00690/2013) support

Separations

Aesculus hippocastanum L., also known as horse chestnut, is an ornamental tree whose seeds are mo... more Aesculus hippocastanum L., also known as horse chestnut, is an ornamental tree whose seeds are mostly discarded in landfills in the regions where they are grown. However, recent studies have shown that these seeds can be a source of interesting compounds for several industries. This work aimed to chemically characterize horse chestnut seeds at the level of compounds recognized for their wide bioactivity, i.e., organic acids, including phenolic compounds, using chromatographic methodologies (UFLC-DAD and LC-DAD-ESI/MSn). In addition, the bioactivity of these seeds was evaluated by in vitro methodologies, seeking to relate the respective (bio)activity to the compounds present in the endocarp (husk), seed coat (skin), and peeled seed (pulp). The antioxidant activity (lipid peroxidation inhibition and oxidative haemolysis inhibition), antibacterial potential (against Gram-positive and Gram-negative bacteria) and cytotoxicity (in human tumour cell lines and porcine liver primary cells) w...

IPATIMUP integrates the i3S Research Unit, which is partially supported by FCT, the Portuguese Fo... more IPATIMUP integrates the i3S Research Unit, which is partially supported by FCT, the Portuguese Foundation for Science and Technology (FCT). The authors are grateful to FCT for the grant of F.S. Reis (SFRH/BD/111753/2015), D. Sousa (SFRH/BD/98054/2013), and FCT and FEDER for CIMO (UID/AGR/00690/2013) support.

Applied Sciences, 2021

The increasing interest in natural foods with functional effects demands progressively higher pro... more The increasing interest in natural foods with functional effects demands progressively higher production levels. Nonetheless, there is an orientation towards practicing more sustainable agriculture, free from environmentally harmful pesticides and fertilizers. Plant biostimulants, a class of bio-based agriculture products designed to improve crop development, represent a feasible alternative to chemical fertilizers, or, at least, an effective way of reducing the employed quantities. Herein, different types of plant biostimulants compatible with organic farming (Phytoalgae, Foliar B, Amino Acids, Soil B, Fitoalgas Green® and Sprint Plus®) were tested in two of the most important nut products worldwide: almonds and hazelnuts, which were tested for nutritional parameters, fatty acids profiles and tocopherols contents. Overall, the most notorious effects in almond samples were obtained with phytoalgae (seaweed Ascophyllum nodosum extracts), particularly reflected in the upraising around...

Sensors and Actuators B: Chemical, 2009

LWT - Food Science and Technology, 2011

Food and Chemical Toxicology, 2012

Food and Chemical Toxicology, 2013

Ganoderma lucidum is one of the most widely studied mushroom species, particularly in what concer... more Ganoderma lucidum is one of the most widely studied mushroom species, particularly in what concerns its medicinal properties. Previous studies (including those from some of us) have shown some evidence that the methanolic extract of G. lucidum affects cellular autophagy. However, it was not known if it induces autophagy or decreases the autophagic flux. The treatment of a gastric adenocarcinoma cell line (AGS) with the mushroom extract increased the formation of autophagosomes (vacuoles typical from autophagy). Moreover, the cellular levels of LC3-II were also increased, and the cellular levels of p62 decreased, confirming that the extract affects cellular autophagy. Treating the cells with the extract

The use of natural products isolated from mushrooms, included inedible species, against infection... more The use of natural products isolated from mushrooms, included inedible species, against infection, cancer diseases and other oxidative-stress related diseases is one of the cornerstones of modern medicine. In the present work, the antioxidant molecule profiles of inedible mushroom species were evaluated and compared with those of edible species. The order of antioxidant abundance found in inedible wild mushrooms was: phenolics > flavonoids > ascorbic acid > tocopherols > carotenoids, similar to that of edible species. Furthermore the same energetic biomolecules were found including the disaccharide trehalose, the monosaccharide alcohol derivative mannitol and the fatty acids palmitic, oleic and linoleic acids. Fomitopsis pinicola revealed a very high phenolics concentration (388 mg GAE/g extract) and powerful antioxidant properties, mainly reducing power (EC 50 value 60 μg/mL similar to the standard Trolox ®). It could find applications in the prevention of free radical-related diseases as a source of bioactive compounds.

European Food Research and Technology

Lentinus crinitus is a wild fungus, which produces mushrooms consumed by some Amazonian Indians. ... more Lentinus crinitus is a wild fungus, which produces mushrooms consumed by some Amazonian Indians. Besides, it is recognized for its diverse biological activities and biotechnological applications. However, there are few reports with limited information on basidiocarp chemical composition and cytotoxicity. Our study determined and evaluated the chemical composition, cytotoxicity, and antioxidant activity of L. crinitus pileus and stipe separately. Chromatographic methods were used to evaluate basidiocarp chemical composition. Cytotoxicity was verified using a cell culture from porcine liver and against a panel of human tumor cells from different models. Antioxidant activity was assessed by different in vitro methods. The pileus had higher levels of protein, ash, tocopherols, and organic acids, mainly malic acid, than the stipe. The stipe revealed higher contents of carbohydrates, energy, soluble sugars, and phenolic acids, mostly p-hydroxybenzoic acid. L. crinitus basidiocarp has mainly trehalose as soluble sugar, and less than 1% fat being ~60% polyunsaturated fatty acids (mostly linoleic and oleic acids), and ~13% saturated fatty acids (mostly palmitic acid). L. crinitus revealed high antioxidant activity for most methods and no cytotoxic activity against tumor and non-tumor cells. L. crinitus basidiocarp can be considered a functional food with applicability in food, cosmetic, and pharmaceutical industries.

Molecules

Food processing generates a large amount of bio-residues, which have become the focus of differen... more Food processing generates a large amount of bio-residues, which have become the focus of different studies aimed at valorizing this low-cost source of bioactive compounds. High fruit consumption is associated with beneficial health effects and, therefore, bio-waste and its constituents arouse therapeutic interest. The present work focuses on the main Portuguese fruit crops and revises (i) the chemical constituents of apple, orange, and pear pomace as potential sources of functional/bioactive compounds; (ii) the bioactive evidence and potential therapeutic use of bio-waste generated in the processing of the main Portuguese fruit crops; and (iii) potential applications in the food, nutraceutical, pharmaceutical, and cosmetics industries. The current evidence of the effect of these bio-residues as antioxidant, anti-inflammatory, and antimicrobial agents is also summarized. Conclusions of the revised data are that these bio-wastes hold great potential to be employed in specific nutritio...

European Food Research and Technology, 2021

Food & Function

Xoconostle fruits are a good source of healthy compounds.

Molecules, 2016

This work presents the chemical profile of two edible species of mushrooms from the genus Leccinu... more This work presents the chemical profile of two edible species of mushrooms from the genus Leccinum: Leccinum molle (Bon) Bon and Leccinum vulpinum Watling, both harvested on the outskirts of Bragança (Northeastern Portugal). Both species were prepared and characterized regarding their content in nutrients (i.e., free sugars, fatty acids and vitamins), non-nutrients (i.e., phenolic and other organic acids) and antioxidant activity. To the best of our knowledge, no previous studies on the chemical characterization and bioactivity of these species have been undertaken. Accordingly, this study intends to increase the available information concerning edible mushroom species, as well as to highlight another important factor regarding the conservation of the mycological resources-their potential as sources of nutraceutical/pharmaceutical compounds. Overall, both species revealed similar nutrient profiles, with low fat levels, fructose, mannitol and trehalose as the foremost free sugars, and high percentages of mono-and polyunsaturated fatty acids. They also revealed the presence of bioactive compounds, namely phenolic (e.g., gallic acid, protocatechuic acid and p-hydroxybenzoic acid) and organic acids (e.g., citric and fumaric acids) and presented antioxidant properties.

Food and Chemical Toxicology, 2016

The current work aimed to study the antitumour activity of a phenolic extract of the edible mushr... more The current work aimed to study the antitumour activity of a phenolic extract of the edible mushroom Leccinum vulpinum Watling, rich essentially in hydroxybenzoic acids. In a first approach, the mushroom extract was tested against cancer cell growth by using four human tumour cell lines. Given the positive results obtained in these initial screening experiments and the evidence of some studies for an inverse relationship between mushroom consumption and breast cancer risk, a detailed study of the bioactivity of the extract was carried out on MCF-7 cells. Once the selected cell line to precede the work was the breast adenocarcinoma cell line, the human breast nonmalignant cell line MCF-10A was used as control. Overall, the extract decreased cellular proliferation and induced apoptosis. Furthermore, the results also suggest that the extract causes cellular DNA damage. Data obtained highlight the potential of mushrooms as a source of biologically active compounds, particularly with antitumour activity.

Molecules, 2015

Journal of Food Science and Technology, 2015

Boletus aereus Bull. is a bolete, an edible mushroom frequently consumed all over the globe as a ... more Boletus aereus Bull. is a bolete, an edible mushroom frequently consumed all over the globe as a delicate mushroom, especially in Serbia, Portugal, Basque Country, Navarre, France and Italy. B. aereus was showed to be rich in carbohydrates (82.58 g/100 g dw), followed by proteins (7.86 g/100 g dw), ash (6.20 g/100 g dw) and fat (3.36 g/100 g dw). The most abundant sugar was identified as trehalose (11.28 g/100 g dw); three tocopherol isoforms (α-, βand δ-tocopherols) were detected. Unsaturated fatty acids predominated over saturated fatty acids, with oleic and linoleic acids as the most dominant ones. p-Hydroxybenzoic (8.95 μg/100 g dw), p-coumaric (7.32 μg/100 g dw) and cinnamic (5.91 μg/100 g dw) acids were quantified, as also four organic acids: oxalic (0.69 g/100 g dw), citric (0.59 g/100 g dw), quinic (0.34 g/100 g dw), and fumaric (0.20 g/100 g dw) acids. The mushroom methanolic extract showed in vitro antioxidant and antimicrobial activities, and successively inhibited the growth of meat contaminant bacteria, both at 25ºC and 4ºC, after 7 days of inoculation.

Food Funct., 2015

Agaricus bisporus is a cultivated mushroom; A. bitorquis, A. campestris and A. macrosporus are ed... more Agaricus bisporus is a cultivated mushroom; A. bitorquis, A. campestris and A. macrosporus are edible mushrooms growing wild in nature.