ABSTRACT
Talinum fruticosum Juss (L.) is an unconventional plant belonging to the family Portulacaceae; it is a herbaceous perennial plant that grows in tropical regions as a foliaceous vegetable. T.fruticosum leaves area source of fiber and minerals and they contribute to assemble the micronutrients for daily nutritional requirements. These plants supply the essential nutrients to the human organism; however, these plants contain antinutritinal factors such as lectins and tannins which may compromise their bioavailability. In the present study, the T. fruticosum leaves samples were investigated on proximate composition and anti nutritional factors. Samples were exposed to heat treatment for washing and for cooking for 10 min. These procedures neither signifcantly changed the carbohydrates and lipids contents, nor eliminated the hemagglutinating activity which is inactivated at 70 °C, although no effective reduction of tannin from the leaves was observed.
Subject(s)
Amaranthus , Nutritive Value , PlantsABSTRACT
Talinum fruticosum Juss (L.) is an unconventional plant belonging to the family Portulacaceae; it is a herbaceous perennial plant that grows in tropical regions as a foliaceous vegetable. T. fruticosum leaves area source of fiber and minerals and they contribute to assemble the micronutrients for daily nutritional requirements. These plants supply the essential nutrients to the human organism; however, these plants contain antinutritinal factors such as lectins and tannins which may compromise their bioavailability. In the present study, the T. fruticosum leaves samples were investigated on proximate composition and antinutritional factors. Samples were exposed to heat treatment for washing and for cooking for 10 min. These procedures neither significantly changed the carbohydrates and lipids contents, nor eliminated the hemagglutinating activity which is inactivated at 70 C, although no effective reduction of tannin from the leaves was observed.
Talinum fruticosum Juss (L.) é uma planta não convencional da família Portulacaceae e trata-se de planta herbácea perene que cresce em regiões tropicais como vegetais folhosos. As plantas fornecem nutrientes essenciais ao organismo, no entanto, a biodisponibilidade pode ser comprometida pela presença de fatores antinutricionais tais como lectinas e taninos. Em virtude das folhas de T. fruticosum serem fonte de fibra e de minerais e por contribuem para reunir os micronutrientes necessários para a nutrição diária, no presente estudo as amostras de folhas dessa planta foram investigadas quanto à composição centesimal, bem como os fatores antinutricionais. As amostras foram submetidas ao tratamento térmico nos procedimentos de lavagem e de cozimento durante 10 min. Estes processos não foram capazes de alterar significativamente os teores de carboidratos e lipídeos, tampouco a supressão da atividade hemaglutinante que é inativada a 70C. Contudo não houve eficácia na redução dos teores de tanino presentes nas folhas estudadas.