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Advisor(s)
Abstract(s)
As inflorescĂȘncias secas da carqueja (P. tridentatum L.) sĂŁo utilizadas na preparação de extratos
aquosos que, de acordo com a tradição popular, possuem propriedades terapĂȘuticas. Durante a
preparação dos extratos ocorre a extração de compostos bioativos, tais como polissacarĂdeos. O
presente trabalho pretende determinar o tipo de polissacarĂdeos presente nos extraĂas e avaliar o seu
possĂvel contributo para as respetivas propriedades terapĂȘuticas. Procedeu- se Ă extração,
caracterização estrutural e avaliação da atĂvidade imunoestimuladora dos polissacarĂdeos presentes
nos extratos. Foi detetada uma mistura de polissacarĂdeos, nomeadamente polissacarĂdeos pĂ©cticos,
arabinogalactanas do Tipo-I e II, galactomananas e xiloglucanas, que apresenta atividade
imunoestimuladora em macrĂłfagos e que poderĂĄ contribuir para as propriedades terapĂȘuticas
atribuĂdas pela medicina popular a estes extratos.
The dried inflorescences of Pterospartum tridentatum L. are used in the preparation ofwater extracts that, according to the popular tradition, possess therapeutic properties. Bioactive compounds, such as polysaccharides, are extracted during the preparation of these extracts. This work intends to disclose the polysaccharides present in the extracts and also to assess their possible contribute to the therapeutic properties attributed to these extracts. The polysaccharides were extracted, structurally characterized and Iheir imrriunostimulatory activity was evaluated. A mixture of polysaccharides composed of pectic polysaccharides, Type-I and Type-II arabinogalactans, galactomannans and xyloglucans was detected. This mixture exhibited a macrophage immunostimulatory activity that might contribute to the therapeutic properties that are attributed by the traditional medicine to these extracts.
The dried inflorescences of Pterospartum tridentatum L. are used in the preparation ofwater extracts that, according to the popular tradition, possess therapeutic properties. Bioactive compounds, such as polysaccharides, are extracted during the preparation of these extracts. This work intends to disclose the polysaccharides present in the extracts and also to assess their possible contribute to the therapeutic properties attributed to these extracts. The polysaccharides were extracted, structurally characterized and Iheir imrriunostimulatory activity was evaluated. A mixture of polysaccharides composed of pectic polysaccharides, Type-I and Type-II arabinogalactans, galactomannans and xyloglucans was detected. This mixture exhibited a macrophage immunostimulatory activity that might contribute to the therapeutic properties that are attributed by the traditional medicine to these extracts.
Description
Keywords
P. tridentatum Polysaccharides Immunostimulatory activity
Citation
Martins, Vitor Manuel Ramalheira; Cruz, Maria Teresa; Ferreira, Isabel; Coimbra, Manuel AntĂłnio (2016). Estrutura e atividade imunoestimuladora dos polissacarĂdeos presentes em extratos aquosos de inflorescĂȘncias secas de P. Tridentatum. In III SeminĂĄrio Alimentos e ManifestaçÔes Culturais Tradicionais e II SimpĂłsio Internacional Alimentação e Cultura: tradição e inovação na produção e consumo de alimentos. Vila Real
Publisher
Universidade de TrĂĄs-os-Montes e Alto Douro