233 documents found, page 1 of 24

Avaliação da exposição ao mercúrio no primeiro estudo da dieta total harmonizad...

O objetivo deste estudo foi estimar a exposição da população portuguesa ao metilmercúrio e mercúrio inorgânico, usando uma metodologia harmonizada de Estudos de Dieta Total (TDS), e avaliar o risco de exceder a Dose Semanal Admissível (DSA) (1,3 e 4 µg/kg de peso corporal/ semana, respetivamente). Amostras de alimentos representativas do padrão alimentar da população foram preparadas de acordo com os hábitos de...

16.ª Reunião Anual PortFIR - Sistemas Alimentares, Solo, Composição de Alimento...

Resumo da 16.ª Reunião Anual PortFIR subordinada ao tema “Sistemas Alimentares, Solo, Composição de Alimentos e Saúde”. A publicação apresenta as comunicações e abstracts/posters submetidos, bem como os resultados da avaliação ao grau de satisfação dos participantes no evento.

Prey consumption and conversion efficiency in females of two feral populations ...

Macrolophus pygmaeus (Rambur, 1839) (Hemiptera: Miridae) is a polyphagous predator used in programs of biological control and integrated pest management as a natural enemy against small arthropod pests including whiteflies, thrips, spider mites and aphid. This mirid is also successfully mass reared under factitious prey for commercial purposes. In the present study we assessed and compared the prey consumption,...

Mercury exposure assessment from the first harmonised Total Diet Study in Portugal

The aim of this study was to estimate the Portuguese population’s baseline exposure to methyl and inorganic mercury by a harmonised total diet study (TDS) methodology and the risk of exceeding the Tolerable Weekly Intake (TWI). TDS food samples representative of the whole diet of the population were prepared as consumed, and analysed for total mercury. European Food Safety Authority’s (EFSA) conservative approa...

Exposição a metilmercúrio e consumo de pescado: emissão de recomendações nacion...

Considerando que o consumo de pescado é uma fonte importante de exposição ao metilmercúrio, a Comissão Europeia recomendou aos Estados- -membros que estabelecessem recomendações para o seu consumo. Assim, tendo sido criado um grupo de trabalho, é objetivo deste artigo apresentar o trabalho desenvolvido para a elaboração das recomendações de consumo de pescado adaptadas à população portuguesa, tendo em conta o p...

Prey consumption and conversion efficiency in females of two feral populations ...

Macrolophus pygmaeus (Rambur, 1839) (Hemiptera: Miridae) is a polyphagous predator used in programs of biological control and integrated pest management as a natural enemy against small arthropod pests including whiteflies, thrips, spi- der mites and aphid. This mirid is also successfully mass reared under factitious prey for commercial purposes. In the present study we assessed and com- pared the prey consumpt...

Economic and financial model to the mass‐rearing of Macrolophus pygmaeus (Rambu...

ABSTRACT: BACKGROUND - Tuta absoluta (Meyrick) is a major pest of tomato produced in glasshouses and open field, causing severe damages to crops, reducing the quality of tomato fruits. The current maintenance of the pest populations below the economic threshold is not achieved by natural and classical control, thus requiring the continuous application of biological control agents (BCAs), under an augmentative o...

Macaronesian Plants as Promising Biopesticides against the Crop Pest Ceratitis ...

ABSTRACT: Ceratitis capitata is responsible for significant economic losses in the fruit production industry, and the market lacks biopesticides that are effective but also cheaper and less contaminating, with fewer negative impacts on the environment. In this regard, the present study suggests as potential options ethanolic extracts from several Macaronesian plants, which inhibit the oviposition and are toxic ...

The first harmonised total diet study in Portugal: Vitamin D occurrence and int...

Vitamin D acts in calcium and phosphate homeostasis and also as an immunomodulatory hormone. To estimate the vitamin D intake by the ‘adults’ and ‘elderly’ Portuguese populations TDS methodology was used, since in the absence of skin UVB exposure, food and supplements are the only vitamin D sources. Vitamin D was quantifiable in 78 (24 from the fish group) of the 164 TDS samples. Sea bream contained the most vi...

Tabela da Composição de Alimentos portuguesa: da compilação à atualização