This study explored the diversity of the quinoa crop in Chile from a nutritional perspective. Nutritional properties, minerals,
vitamins, and saponin content were assessed in seeds of six Chilean quinoa (
Chenopodium quinoa
Willd.) ecotypes grown
in three main production areas with distinctive climatic and edaphic conditions: Ancovinto and Cancosa in the North-
Altiplano or High Plateau, Cáhuil and Faro in the central coastal area, and Regalona and Villarrica in the south of the country.
There were significant differences (P < 0.05) in all the nutritional properties of the quinoa seeds in all three areas. Quinoa
of the Villarrica ecotype showed the highest protein content (16.10 g 100 g
-1 DM) and the highest content of vitamins E and
C (4.644 ± 0.240 and 23.065 ± 1.119 mg 100 g
-1 DM, respectively). The highest content of vitamins B1 (0.648 ± 0.006 mg
100 g
-1 DM) and B3 (1.569 ± 0.026 mg 100 g
-1 DM) was found in the Regalona ecotype, while the highest value of vitamin
B2 (0.081 ± 0.002 mg 100 g
-1 DM) occurred in the Ancovinto ecotype. Potassium was the most abundant mineral with a
maximum value of 2325.56 mg 100 g
-1 DM in the Cancosa ecotype. Saponin content varied from 0.84 g 100 g
-1 DM in the
Villarrica ecotype to 3.91 g 100 g
-1 DM in the Cáhuil ecotype. Significant differences were found among the Chilean quinoa
ecotypes grown under different climatic conditions; however, all the quinoa seeds exhibited a high nutritional value. These
results are compatible with the genetic differences previously observed in the three geographical areas under study. Thus, if
more studies are conducted to show the particular properties of quinoa from specific areas, it would be possible in the future
to coin the term "controlled designation of origin" (appellation d’origine contrôlée) and add commercial value to Chilean
quinoa seeds in the domestic and international markets.
