CEBIMED - Congress and other Meeting Presentations/ Apresentações em Congressos e em Outras Reuniões
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- Development of an HPLC/DAD method for determination of phenolic profile in portuguese olive fruitsPublication . Ferreira da Vinha, Ana; Andrade, Paula B.; Silva, Branca M.; Pereira, José A.; Valentão, Patrícia; Seabra, Rosa M.; Oliveira, M. BeatrizPolyphenolic compounds inliuence the sensorial properties of olive fruits and virgin olive oils and are imporlant markers for studying fruit characteristics of different cultivars and for controlling oil production processes . A few chromatographic methods have been used to study the phenolic compounds of olive fruit . This communication reports the development of a new HPLCIDAD methodology to separate, identify aml quanlily lhe phenolic compounds from Portuguese olive fruit cultivars (Cobrançosa, Madura/and Verdeal).
- Evaluation of physiological and microbiological tomatoes cultivars (Lycopersicon esculentum) in biotechnology sciencePublication . Ferreira da Vinha, Ana; Coutinho, Filipe; Soares, Marta Oliveira; Barros, Raquel; Iglésias, Raúl; García Estevez, JoséThe fruits present a great importance in the feeding human being and in the public health, not only for its nutritional wealth, as well as for the easy digestion, rich in minerals and vitamins levels. The tomato fruit (Lycopersicon esculentum) can be characterized as a fruit with a complex matrix where, the nutritional quality is evaluated in terms of macronutrients, vitamins and minerals. The establishment of standards of quality for foods and its degree of relative specifications to the limits of tolerance, relative to the pathogenic microorganisms, depends on the previous knowledge of the microbiotic flora and its interactions with climacteric conditions. The evaluation of the physical and chemical quality of the fruits allows establishing the quality of the fruit and its commercial standardization. The fruits, in its natural state, are susceptible to microbiologic deterioration. The natural ground, water, air and predators, are some examples of interferents with some meaning in the significant increase of the microflora of vegetables.
- Bactericidal effect of essential oil of Angolan Cymbopogon citratus and its majority componentPublication . Soares, Marta Isabel Lopes Rodrigues de; Silva, Andreia; Coutinho, Filipe; Ferreira da Vinha, Ana; Herdeiro, Teresa; Catarino, Pedro; Gárcia Estevez, José M.; Iglesias, Raúl; Machado, MarisaCymbopogon citratus (DC) Stapf. (erva príncipe), Poaceae – Gramineae, originated in India but it is also grown elsewhere in tropical and sub‐tropical as Angola, where this is of great importance in the country's traditional medicine. Is consumed as a beverage aromatic and used in traditionalby its lemon fragrance. It is also used in traditional medicine of almost all continents and covers a wide range of such indications of disorders digestives, infectious, inflammatory, nerve, as well as other health problems. Its use in traditional medicine covers a wide range of indications by tradition, trust, and lack of economic power. The antimicrobial properties of essential oils arouse interest are an alternative to consumers in the natural additive practice as a source of food conservation.
- Functional foods and phytotherapeutic: use as agents of plant development and prevention of public healthPublication . Silva, Viviana; Coutinho, Filipe; Oliveira, Marta Isabel; Iglésias, Raúl; García Estevez, José; Ferreira da Vinha, AnaThe current way of life may cause the increase of chronic degenerative diseases, whose treatment is not always possible with pharmacological medication. The Diet Therapy and Phytotherapy are on the rise, associated with functional foods phytotherapeutic action. The antioxidant action of bioactive compounds depends on their chemical structures and their concentrations in food. The main objective of this study was to characterize and evaluate fourteen plants of green leaf of national culture in its physical‐chemistry, levels of antioxidant compounds and synergistic effects between them, measured by the method of capture of free radical DPPH. The chemical parameters studied were water content, pH, ascorbic acid content and also total carotenoids.
- Importance of tomato (Lycopersicon esculentum) consumption on the plasma status of antioxidant microconstituents in healthy young womenPublication . Ferreira da Vinha, Ana; Pires, P.C.; Soares, M.O.; Iglésias, R.; Pérez, M.J.; Estévez, J.G.Tomato fruit and especially concentrated tomato paste are importante sources of antioxidantes in the mediterranean diet. Tomatoes (Lycopersicon esculentum) are widely consumed either raw or after processing and can provide a significant proportion of the total antioxidants in diet.
- Chemical and antioxidant analysis of baobab (adansonia digitata) fruit and seeds - a therapeutic and traditional african plantPublication . Ferreira da Vinha, Ana; Soares, Marta; Pires, Pedro; Barros, Raquel; Faria, António CarlosIn the recent years, in the attempt to counteract the oxidative stress damages, the strategy of implementing the diet with antioxidants, especially deriving from natural sources, is becoming more and more convincing. In this regards, several studies have been directed toward the evaluation of natural antioxidant compounds.
- Total antioxidant capacity in dark green vegetables commonly consumed in mediterranean dietPublication . Ferreira da Vinha, Ana; Soares, Marta; Pires, Pedro; Machado, MarisaEpidemiological research has revealed a lower incidence of many chronic diseases in areas and populations that are regular consumers of vegetables. With vegetables, the obvious conclusion drawn would be that the foods are sources of vitamins with antioxidant properties, such as vitamins A and C.
- Avaliação in vitro da actividade antioxidante do extracto aquoso de plantas aromáticas com efeitos fitoterapêuticosPublication . Ferreira da Vinha, Ana; Soares, Marta; Pires, Pedro; Machado, MarisaO interesse pela descoberta de novos antioxidantes, a partir de fontes naturais, tem aumentado nos últimos anos, devido ao potencial uso como conservantes alimentares e agentes protetores da oxidação celular.
- Antifungal activity of endemic Origanum virens from PortugalPublication . Soares, M.O.; Ferreira da Vinha, Ana; Lima, R.P.; Coutinho, F.; Catarino, P.Origanum virens is widely used in Portuguese, and Mediterranem, cuizin. Althout it is use as food condiment, it is also used in traditional medicin as antiseptic. The antifungal activity of Origanum virens essential oil on Candida albicans ATCC 10231 and physicchemical characterization of several extracts were evaluated.
- Antimicrobial activity of essential oil of Cymbopogon citratus (DC) Stapf. Poaceae-Gramineae from Angola in ATCC and multidrug resistant strainsPublication . Soares, M.O.; Ferreira da Vinha, Ana; Lima, R.P.; Coutinho, F.; Machado, M.; Catarino, P.Cymbopogon citratus (DC) Stapf. Poaceae-Gramineae (C. citratus) is an herb from India, which grows in several countries in tropical and sub-tropical, as the Republic of Angola, where tea is known as caxinde. This tea is consumed, as aromatic drink, as well as in traditional cuisine due to its lemon flavor. Cymbopogon citratus (DC) is widelly used in folk medicine, where infusions and decoctions, feature anti-spasmatic, carminatives and anti-hypertension properties. The essential oil of C. citratus is often applied, in pharmaceutical industry, as flavor and fragrance, and is also used as a source of new phytochemical molecules for the development of new pharmaceutical products.