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Abstract(s)
A procura de alimentos que tenham a capacidade de melhorar a nossa saúde e reduzir o risco de doenças tem vindo, progressivamente, a ganhar interesse. Os cogumelos podem ser um exemplo desses alimentos, apresentando ainda a vantagem de serem reconhecidos como uma iguaria. Esta característica pode colocar os cogumelos na interface farmacologia- nutrição.
Neste estudo, foram caracterizadas oito espécies de cogumelos em termos nutricionais (proteínas, glúcidos, lípidos, açúcares individuais e ácidos gordos) e de compostos bioativos (tocoferóis, carotenoides, ácidos orgânicos e compostos fenólicos) com propriedades antioxidantes. As propriedades medicinais são frequentemente relacionadas com o potencial antioxidante apresentado pelos extratos de cogumelos.
Boletus regius foi a espécie com maior teor de glúcidos (88,79 g/ 100g dw) e PUFA (56,55 %), compostos bioativos como tocoferóis (736,80 μg/ 100g dw), ácido cítrico (3,32 g/ 100 g dw) e compostos fenólicos (23,49 mg/ 100 g dw), incluindo 2 derivados da crisina, apresentando também elevada atividade antioxidante.
Os compostos bioativos identificados poderão ser usados como nutracêuticos para prevenir doenças crónicas relacionadas com o stresse oxidativo. Além disso, todas as espécies testadas são comestíveis e poderão ser incorporadas diretamente na dieta como alimentos funcionais.
The search for foods that might improve health or reduce disease risk, has been progressively gaining interest. Mushroom could be examples of these foods, presenting the additional advantage of being recognized as a delicacy. This feature might place mushrooms in the pharma-nutrition interface. Herein, eight different mushroom species were characterized in terms of nutrients (proteins, carbohydrates, fat, individual sugars, fatty acids) and bioactive compounds (tocopherols, carotenoids, organic acids and phenolic compounds) with recognized antioxidant properties. The medicinal properties are often related with the antioxidant potential presented by mushroom extracts. Boletus regius was the species with the highest levels of carbohydrates (88.79 g/ 100 g dw) and PUFA (56.55%), bioactive compounds such as tocopherols (763.80 μg/100 g dw), citric acid (3.32 g/ 100 g dw) and phenolic compounds (23.49 mg/ 100 g dw), including two chrysin derivatives, presenting also the highest antioxidant activity. The identified bioactive compounds might be used as nutraceuticals to prevent chronic diseases related with oxidative stress. Furthermore, all tested species are edible, and could be incorporated directly in diet acting as functional foods.
The search for foods that might improve health or reduce disease risk, has been progressively gaining interest. Mushroom could be examples of these foods, presenting the additional advantage of being recognized as a delicacy. This feature might place mushrooms in the pharma-nutrition interface. Herein, eight different mushroom species were characterized in terms of nutrients (proteins, carbohydrates, fat, individual sugars, fatty acids) and bioactive compounds (tocopherols, carotenoids, organic acids and phenolic compounds) with recognized antioxidant properties. The medicinal properties are often related with the antioxidant potential presented by mushroom extracts. Boletus regius was the species with the highest levels of carbohydrates (88.79 g/ 100 g dw) and PUFA (56.55%), bioactive compounds such as tocopherols (763.80 μg/100 g dw), citric acid (3.32 g/ 100 g dw) and phenolic compounds (23.49 mg/ 100 g dw), including two chrysin derivatives, presenting also the highest antioxidant activity. The identified bioactive compounds might be used as nutraceuticals to prevent chronic diseases related with oxidative stress. Furthermore, all tested species are edible, and could be incorporated directly in diet acting as functional foods.
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Citation
Leal, Ana Raquel Gonçalves (2012). Biomoléculas em cogumelos silvestres do Nordeste de Portugal: função nutricional e medicinal. Bragança: Escola Superior Agrária. Dissertação de Mestrado em Biotecnologia
Publisher
Instituto Politécnico de Bragança, Escola Superior Agrária