HOME > EDICIONES > Año 2000, Volumen 50 - Número 4
Trabajos de Investigación
Vegetales silvestres sub explotados del Chaco argentino y su potencial como recurso alimenticio
Marcelino R. Freyre, Claudia M. Baigorria, Víctor.R. Rozycki, Cecilia M. Bernardi, Margarita Charpentier
Instituto de Tecnología de Alimentos (I.T.A.), Facultad de Ingeniería Química, Universidad Nacional del Litoral Santa Fe, Instituto de Cultura Popular (INCUPO), Reconquista, Pcia. de Santa Fe, República Argentina.
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SUMMARY
Suitability of wild underexploited vegetables from the Argentine Chaco as a food resource
The nutritional value of wild underexploited vegetable samples collected in the Argentine Chaco was investigated. Leaves from Hipochaeris sp.-, Coronopus didimus and Portulaca olearacea; fruits from Zyziphus sativa, Brumelia obtusifolia and Eugenia uniflora; and roots of Canna coccinea were included in this work; several separate samples being taken at least during two consecutive harvesting seasons . Values for moisture, protein, total lipids, crude fiber, ash, reducing and total sugars, starch, total pectins and energy are given. Mineral micronutrient contents are reported for calcium, potassium, magnesium, iron and phosphorus, as well as vitamin values (ascorbic acid and beta-carotene).
Higher concentrations of macronutrients were found in the leafy vegetables (32-50 Kcal /100 g) than in commercially exploited cultivars (14-30 Kcal/100 g), as shown by an increased energy value, the protein content of Portulaca olearacea (3.74 g/ 100 g) being highly remarkable. Unusually high micronutrient figures were also determined in Coronopus didimus, with 172.3; 3.98, and 46.7 mg /100 g, for calcium, iron and magnesium, respectively.
In general, fruits also showed higher macronutrient contents, with the exception of proteins, with less but constant values (1.58 to 1.74 g /100 g), although contributing more energy than commercial cultivars (70 to 147 Kcal/ 100 g). Equally important proved to be the provitamin A content in Eugenia uniflora (11.98 mg/100 g).
Roots of Canna coccinea revealed the lowest energy value (34 Kcal/ 100 g) but surprisingly, the highest content of phosphorus of all the species under study.
Key words: Wild, vegetable, food, Chaco.
Recibido: 09/01/1999
Aceptado: 23/11/2000
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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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