Calidad molinera de la línea promisoria de arroz L-17 (Oryza sp.) cultivada en la zona de Pimocha, provincia de Los Ríos.

Rice is the most relevant fundamental production grain on a global scale, thanks to the total extent of its cultivation throughout the world and the large number of people who rely on its harvest, offering work to numerous families. The objective of this study was to determine the milling quality of the promising L-17 rice line grown in the Pimocha area, Los Ríos province. Two rice cultivars were used with three repetitions: L-17 and SFL-11. The determination of milling quality is carried out in the FACIAG-UTB Grain Quality Laboratory. The variables evaluated were: weight (g) of husk, weight (g) of brown rice, weight (g) of white mass, weight (g) of powder, weight (g) of broken grains, weight (g) of whole grains, whiteness, white center (%), percentage of amylose and protein. For statistical analysis, the non-parametric Kruskal Wallis analysis design was used, including comparison of means. Regarding the results, it is calculated that in the whole grains variable, the promising line L-17 presented the highest value with 606.45 g (60.64 %). The amylose content in the commercial variety SFL-11 was 31.57%, while the promising line L-17 obtained a value of 30.20%, almost similar results in the two cultivars. The percentage of whiteness in the commercial variety SFL-11 was 42.87%, while the promising line L-17 obtained a value of 40.90%. Regarding proteins, it was determined that the promising line L-17 obtained a value of 7.97%, while the commercial variety SFL has an average of 7.80%, observing that there is no difference in protein between the two cultivars. It is possible to conclude that the milling quality of these two studied cultivars is very similar.

• Main Author: Tapia Prieto, Brayan Roberto (author)
• Format: bachelorThesis
• Published: 2025
• Subjects: Arroz; Arroz entero; Amilosa; Cultivares
• Online Access: http://dspace.utb.edu.ec/handle/49000/18308