SUMMARY
A chemical composition comparative study between two wild vegetable species and chard
The nutritional quality two wild vegetable species, Kochia scoparia (Ks) and Chenopodium album (Cha) was evaluated and compared with Befa vulgari var. Cicla (chard) (Bv), in order to propose their domestication as alternative protein sources. Chemical percentual analysis (AOAC), gaseus chromatography fatty acid determination, and antinutrient searching (by chemical, enzymatic and inmunological method) were performed. Protein quality was determined by the following indexes: net protein utilization (NPU), true digestibility (tD) and biological value (BV). The three species exhibited similar protein concentration values, 25.8, 25.0 and 22.1 g/l00g for Ks, Cha and Bv, respectively. Kochina scoparia showed the highest value for fatty acid analysis (82%), predominance of linolenic acid. Since the samples were subject to boiling, the amounts of antinutrients found can be considered to be within levels not affecting health. As regards the biological quality, the obtained values for Ks, Cha and Bv, respectively, were: NPU 68.0±0.4,55.0±6.1 and 56.0±4.2; tD70.0±0.7, 7l.0±4.0 and 7 ± 8.2; BV: 97, 77 and 74. The analysis of the biological quality indexes gave highest nitrogen profit for Ks. These results indicate that Kochia scoparia is suitable for the objective proposed.

Key words: Kochia scoparia, chenopodium album. protein. biological value, chemical composition.



Recibido: 17/11/1997
Aceptado: 25/08/1998

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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 Urbanización Santa María, primera transversal, No. 417-214, Planta Alta Tele-Fax: (+58-212) 283.8618 E-mail info@alanrevista.org Código Postal: 1070 Caracas - Venezuela