Quinoa is a regionally important grain crop in the Andean region of South America. Recently quinoa has gained international attention for its high nutritional value and tolerances of extreme abiotic stresses. DNA markers and linkage maps are…
2008
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Twenty triterpene saponins (1-20) have been isolated from different parts of Chenopodium quinoa (flowers, fruits, seed coats, and seeds) and their structures have been elucidated by analysis of chemical and spectroscopic data including 1D- and…
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A novel molluscicide against Pomacea canaliculata snails (Golden apple snail, GAS) based on quinoa saponins (Chenopodium quinoa) is presented. Quinoa is a pseudocereal extensively cultivated and consumed in Bolivia and Peru. The external husk of the…
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The amino acid composition and the physicochemical and functional properties of quinoa protein isolates were evaluated. Protein isolates were prepared from quinoa seed by alkaline solubilization (at pH 9, called Q9, and at pH 11, called Q11)…
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In this study, a novel repetitive sequence pTaq10 was isolated from the Taq I digest of the genomic DNA of the pseudocereal Chenopodium quinoa. Sequence analysis indicated that this 286-bp monomer is not homologous to any known retroelement…
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The application of deficit irrigation (DI) to stabilize yield and to increase water productivity of quinoa (Chenopodium quinoa Willd.) raises questions in the arid Southern Altiplano of Bolivia where water resources are limited and often saline.…
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Aspartate kinase (AK, EC 2.7.2.4), homoserine dehydrogenase (HSDH, EC 1.1.1.3) and dihydrodipicolinate synthase (DHDPS, EC 4.2.1.52) were isolated and partially purified from immature Chenopodium quinoa Willd seeds. Enzyme activities were studied in…
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Incidence of fungal contamination of quinoa seeds from three locations (Salar de Uyuni, Bolivia; Salta and Tucum??n provinces, Argentina) was analyzed in samples with and without treatment to remove saponins (wet method). In processed samples, the…
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Quinoa (Chenopodium quinoa Willd) is a Latin American food staple readily available in large quantities in Peru, Bolivia and Ecuador. The outer husk of the grain is removed prior to consumption to reduce its bitter taste. At present, quinoa husks…
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Sea level quinoas are grown at low altitudes in Central and Southern Chile. Both sensitivity to photoperiod and response to temperature largely determine quinoa adaptation, but crop biomass production must be quantified to evaluate agronomic…
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Agriculture needs to increase its production with a small amount of available fresh water. Deficit irrigation (DI) is now widely been investigated as one of the solutions for this problem. The effects of concentrated drought stress in various…
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A novel product for managing Pomacea canaliculata, golden apple snail (GAS), containing quinoa saponins (Chenopodium quinoa), was evaluated under laboratory conditions for the protection of newly sprouted rice seeds. Experimental methods mimicked…
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The identification of the critical period for seed determination is a central aspect for adequate crop management for higher yields. As important variability in the developmental stages associated to this critical period and its duration has been…
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Models can play an important role in agricultural planning and management. Thermal time accumulation is a common way of describing phenological development in crop models, but the sensitivity of this concept to water stress is rarely quantified. The…
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The aim of this study was to characterize the dehydrin content in mature embryos of two quinoa cultivars, Sajama and Baer La Unión. Cultivar Sajama grows at 3600-4000 m altitude and is adapted to the very arid conditions characteristic of the salty…
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The antioxidant potency of various extracts and fractions from Chenopodium quinoa and Amaranthus sp. was evaluated using three established methods, specifically the DPPH scavenging activity, FRAP, and ??-carotene bleaching assays. Satisfying results…
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The quality of three gluten free spaghetti typologies, made from amaranthus flour plus the addition of quinoa (CQA), broad bean (CBA) or chick pea (CCA), was investigated. The quality of the produced spaghetti was compared to that of spaghetti made…
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Abstract The Andean grain, quinoa, Chenopodium quinoa Willd. (Caryophyllales: Amaranthaceae), is gaining increasing attention as a future food and fodder crop in Denmark and other parts of Europe. Prior to 2005, pest problems in the crop were…
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Influence of various nitrogen applications on protein and amino acid profiles of amaranth and quinoaThe effect of nitrogen application levels (0.16 and 0.24 g N kg(-1) soil) on seed proteins and their amino acid compositions of amaranth (Amaranthus spp.) and quinoa (Chenopodium quinoa Willd) was studied. Total proteins of amaranth and quinoa had…
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Quinoa stalk (Chenopodium quinoa Willd.) from agricultural crop residue, totora (Schoenoplectus tatora) and o-macrophytes (aquatic flora) from Lake Titicaca (on the Bolivian Altiplano) were studied in a wet anaerobic co-digestion process together…
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Quinoa(ChenopodiumquinoaWilld.) isa foodcrop cultivatedbysubsistence farmersandcommercial growers on the high Andean plateau, primarily in Bolivia, Peru, and Chile. Present interest in quinoa is due to its tolerance of harsh environments and its…
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Nuclear genome size and chromosome analysis in Chenopodium quinoa and C-berlandieri subsp nuttalliaeCytogenetic characterization by karyotyping and determination of DNA content by flow cytometry of seven cultivated varieties of Chenopodium was performed. Chenopodium quinoa cultivar Barandales and C. berlandieri subsp. nuttalliae cultigens…
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This paper presents a review of the litterature on the physiology and\ndiversity of quinoa (Chenopodium quinoa Willd.). Since about 15 years,\nthis Andean crop experiences a great commercial success in the organic\nand fair-trade food networks.… -
Se realizó la extracción de compuestos hidrofílicos y lipofílicos de cereales andinos, siendo el de mayor contenido en ambos casos la muestra de kañiwa (Chenopodium pallidicaule variedad cupi), siguiendo la de quinua (Chenopodium quinoa ecotipo…
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Red amaranth (Amaranthus cruentus) and quinoa (Chenopodium quinoa) are pseudocereals with particularly highly regarded nutritional value. Because of the high biological significance of the flavonoids and phenolic acids in these plants, qualitative…
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Se realizó la extracción de compuestos hidrofílicos y lipofílicos de cereales andinos, siendo el de mayor contenido en ambos casos la muestra de kañiwa (Chenopodium pallidicaule variedad cupi), siguiendo la de quinua (Chenopodium quinoa ecotipo…