The amylase, protease, cellulase and hemicellulase activities were determined in the flour of untreated quinoa seeds, and again after mechanical abrasion and after water and heat treatment to remove saponins. Optimum pH for amylase activity was…
1980-1989
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Quantitative determinations of total and soluble proteins, total and free sugars, starch, total lipids, tanins, ash (Ca, Na, K, Fe, and P), and caloric value were carried out on quinoa flour. Results show that the amount of soluble proteins was…
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Saponins were extracted from quinoa (Chenopodium quinoa Willd, Kancolla variety) by refluxing with a methanol-water (4:1) mixture. Once the methanol was evaporated, the remaining residue was treated following Honerlagen and Tretter's method with…
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A hemolytic method was optimized and standardized against a commercial saponin preparation to provide a sensitive assay of the saponin content of quinoa. Increasing the extraction temperature and time (beyond 1 hr) and storage (30 C) of ground…
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Based on the hypothesis that the digestibility of quinua seed is the limiting factor in the utilization of nutrients from this staple, two quinua-based diets were prepared using quinua seeds and quinua flour. Theses diets were offered to children…
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In order to have available a human food of high nutritive value, and conscious of the protein quality of the quinua, as well as its carbohydrate, vitamin and mineral content, its behavior during the extrusion process was tested in the present study.…
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Cross-protection experiments were performed in Chenopodium quinoa using arabis mosaic virus (ArMV) and grapevine fanleaf virus (GFLV) isolates. Two factors were specially studied, namely the time interval and the distance between the two…
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Chenopodium quinoa Willd. was grown at fertilizer nitrogen application of 150, 260, 470 and 880 kg per ha. Green fractions of leaf protein concentrate (LPC) were obtained from expressed plant juice using heat fractionation. An increase of the…
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Yields and nutritive quality of protein fractions separated from genetically identical plant material (Atriplex hortensis and Chenopodium quinoa) grown under 2 different agricultural conditions in 2 geographically distant locations (Sweden and…