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Sementes edíveis: composição em ácidos gordos e impacto na saúde
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Advisor(s)
Abstract(s)
O consumo de sementes (especialmente girassol, sésamo, linhaça e pevides
de abóbora) aumentou, nos últimos anos, devido à associação da sua ingestão
a efeitos benéficos para a saúde. Mais recentemente, e em resposta a esta
tendência do mercado, foram introduzidas "novas" sementes na alimentação,
caso das sementes de chia e de papoila. O objetivo deste trabalho foi determinar
o teor total de gordura e o perfil em ácidos gordos de diferentes sementes
disponíveis no mercado português, e estimar o benefício/risco para a
saúde da população portuguesa, associado ao consumo das sementes analisadas.
Verificou-se que 75% das amostras analisadas apresentaram o ácido
linoleico (C18:2,n6) como o ácido gordo maioritário, e nas restantes sementes
foi o ácido alfa-linolénico (C18:3,n3) o mais abundante. As sementes de papoila
apresentaram o maior teor de ácido linoleico (71,6%), e as sementes de
sésamo apresentaram o teor mais elevado de ácido oleico (39,6% dos ácidos
gordos totais). Todas as sementes analisadas apresentam um perfil de ácidos
gordos considerado saudável, sendo maioritários os ácidos gordos insaturados
relacionados com a prevenção de doenças cardiovasculares.
Consumption of seeds (especially sunflower, sesame, flaxseed and pumpkin seeds) has increased in recent years due to the association of their intake with beneficial effects on health. More recently, and in response to this market trend, "new" seeds were introduced in the food chain, such as chia and poppy seeds. The objective of this work was to determine the total fat content and the fatty acid profile of different seeds available in the Portuguese market, and to estimate the potential health benefit/risk for the Portuguese population, associated to the consumption of the analysed seeds. It was found that 75% of the analysed samples presented linoleic acid (C18:2,n6) as the major fatty acid, and in the remaining seeds alpha-linolenic acid (C18:3,n3) was the most abundant. Poppy seeds had the highest content of linoleic acid (71.6%) and sesame seeds had the highest content of oleic acid (39.6% of total fatty acids). All the analysed seeds present a fatty acid profile considered healthy, being the major fatty acids unsaturated which are related to the prevention of cardiovascular diseases.
Consumption of seeds (especially sunflower, sesame, flaxseed and pumpkin seeds) has increased in recent years due to the association of their intake with beneficial effects on health. More recently, and in response to this market trend, "new" seeds were introduced in the food chain, such as chia and poppy seeds. The objective of this work was to determine the total fat content and the fatty acid profile of different seeds available in the Portuguese market, and to estimate the potential health benefit/risk for the Portuguese population, associated to the consumption of the analysed seeds. It was found that 75% of the analysed samples presented linoleic acid (C18:2,n6) as the major fatty acid, and in the remaining seeds alpha-linolenic acid (C18:3,n3) was the most abundant. Poppy seeds had the highest content of linoleic acid (71.6%) and sesame seeds had the highest content of oleic acid (39.6% of total fatty acids). All the analysed seeds present a fatty acid profile considered healthy, being the major fatty acids unsaturated which are related to the prevention of cardiovascular diseases.
Description
Keywords
Sementes edíveis Composição em Ácidos Gordos Estilos de Vida e Impacto na Saúde Promoção da Saúde Alimentaçao Saudável Composição dos Alimentos Saúde Pública Portugal
Pedagogical Context
Citation
Boletim Epidemiológico Observações. 2016;5(Supl 8):12-16
Publisher
Instituto Nacional de Saúde Doutor Ricardo Jorge, IP