[Biologic value of the protein concentrate of Atripex lampa and its value as a complement to wheat flour]. / Valor biológico y complementario a la harina de trigo, del concentrado proteínico de Atriplex lampa.
Arch Latinoam Nutr
; 38(4): 844-51, 1988 Dec.
Article
em Es
| MEDLINE
| ID: mdl-3154295
ABSTRACT
The Atriplex lampa, chenopodiáceae, is a very abundant bush in the arid and semiarid regions of our Province. This work was undertaken to characterize from the chemical point of view, both the fresh leaves and the protein concentrate (PC) obtained from them. A second purpose was to determine the biological value of the protein, and to evaluate its capacity as a complement to wheat flour (WF). Through this study, the leaf was shown to have a high content of ashes, sodium, potassium and silica, what accounts for its low palatability. The PC obtained has a protein concentration of 59.37 g/100 g and its biological value is limited by the sulfur amino acids, with a chemical score of 85.70. Since the protein is poorly utilized, this results in a relatively low value of its net protein utilization (NPU), a fact which may be attributed to its low true digestibility. The studies on the complementary effects of PC on WF were made at three levels, i.e., 30, 50 and 60%, respectively. The results revealed that the best complementation, measured by the nitrogen utilization, happened to be when 50% of the protein contribution was provided by the A. lampa protein concentrate.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas de Plantas
/
Triticum
/
Alimentos Fortificados
/
Farinha
/
Valor Nutritivo
Idioma:
Es
Revista:
Arch Latinoam Nutr
Ano de publicação:
1988
Tipo de documento:
Article
País de afiliação:
Argentina