HOME > EDICIONES > Año 2003, Volumen 53 - Número 3
Trabajos de Investigación
Contenido en algunos nutrientes del alga marina comestible, Monostroma undulatum, Wittrock de la costa patogónica argentina
Susana Risso, Carlos Escudero, Silvia Estevao Belchior, María Luz de Portela4 y María Angélica Fajardo.
Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina.
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SUMMARY
Chemical composition and seasonal fluctuations of the edible green seaweed, Monostroma undulatum, Wittrock, from the southern argentina coast
The chemical composition of green seaweed, Monostroma undulatum, Wittrock, growing in the Southern Argentine coast, was studied to obtain information regarding nutritional value. Samples were collected in Puerto Deseado, province of Santa Cruz (47º 45’L.S., 65º 55’L.W.), from October to December 1999 and 2000. It has been analyzed six sample during this period. Algae were washed with sea water and dried at room temperature for 24 hs. Moisture, nitrogen, lipids and ashes were determined according to AOAC; fiber (total, soluble and insoluble), according to Lahaye. After mineralization with nitric acid, sodium and potassium were determined by flame photometry, calcium by complexometric method, and phosphorus by Gomori’s method. The ranges expressed per 100 g dry algae were: protein (Nx6,25): 12.89-21.85; ashes (g): 33.92-40.05; lipid (g): 0.32-1.47; total fiber (g): 14,36-19,6; digestible carbohydrates (calculated by difference) (g): 20.86-32.48; sodium (g): 7.39-13.11; potassium (g): 1.38-3.18; calcium (mg): 149-226; phosphorus (mg): 190-447; Vitamin C (mg): 159-455. These results show that this green seaweed is an important source for protein, fiber, macronutrients minerals and vitamin C, during the macroscopic period. Besides, there was an important fluctuation that must be taken into account to consider the commercial collection to use it in human nutrition.
Key words: Green edible algae, Monostroma undulatum, composition, minerals, nutrition, dietary fibre.
Recibido: 20/06/2002
Aceptado: 03/06/2003
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PRIVACIDAD | ACCESIBILIDAD
ALAN-VE ISSN 0004-0622 - Depósito Legal: pp 199602DF83
Sociedad Latinoamericana de Nutrición
Producción editorial en Venezuela: Capítulo Venezolano - RIF: J-30843129-0
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