title: [Chemical and biological evaluation of quinua (Chenopodium quinoa Willd). Effect of the extraction of saponins by heat treatment].
abstract: The changes in proximate composition, amino acid content and protein efficiency ratio (PER) caused by hot-water extraction of the saponins were studied in four Bolivian varieties of quinua (Chenopodium quinoa, Willd). Detectable saponin was eliminated with an extraction at 70 degrees C. Extraction at 87 degrees C also eliminated the saponins but, in addition, had the tendency of slightly increasing the protein amino acid content. The maximum PER obtained was 2.99 for the Blanca variety, followed by 2.72 for the Sajama variety, also extracted at 87 degrees C (casein gave a PER value of 3.21).
mesh_terms: D000601:Amino Acids, Essential / Q000032:analysis*; D000818:Animals; D004044:Dietary Proteins; D006358:Hot Temperature; D007408:Intestinal Absorption; D009753:Nutritive Value; D010940:Plant Proteins / Q000032:analysis; D010946:Plants, Medicinal / Q000032:analysis*; D051381:Rats; D012503:Saponins / Q000302:isolation & purification* / Q000378:metabolism
chemical_list: D000601:Amino Acids, Essential; D004044:Dietary Proteins; D010940:Plant Proteins; D012503:Saponins
vernacular_title: Evaluación química y biológica de la quinoa (Chenopodium quinoa Willd). Influencia de la extracción de las saponinas por tratamiento térmico.