Factores determinantes de la calidad molinera del arroz (Oryza sativa L. ssp. indica)”.

Agriculture needs varieties of rice that give us whole grains during processing. In the rice sector, the provinces of Guayas and Los Ríos, represent 83% of the area planted with grass in Ecuador. Regarding production, Guayas and Los Ríos report 47% and 40%, respectively. Plants have two types of roots, the seminal or temporary, and the adventitious or permanent. The former survive for a short time and are replaced by the latter that sprout from the underground nodes of the young stems, and in some cases also from the aerial nodes.The traditional indica-type varieties grown in the tropics have the following characteristics: greater height, dense tillering, long sloping pale green leaves and medium to long grain size. The traditional rice industrialization process involves the activities that transform paddy rice (raw material) into milled rice (white or polished). Unlike other cereals, where the grain is ground into flour, in making rice, the goal is to keep as many grains intact as possible, such as whole rice. The technical efficiency of the production process, that is, the industrial performance, is judged by the quantity of whole rice, obtained from a given quantity of paddy rice. When varieties have a high percentage of bran, the polishing stage must be adjusted to achieve the desired whiteness in the rice. Almost always, it is the short cycle varieties that produce a product with a more uniform characteristic and of higher quality when cooked. The quality of the rice grain arises from the action of several physicochemical factors of the grain, such as size, shape, weight, pigmentation, hardness, and gelatinization temperature, amylose content of starch, while others refer to the harvest and its handling, drying, transportation and storage. Preferences for the length and transparency of the grain, degree of grinding and aroma, variation from one region to another. Also; quality varies within each type.

• Главный автор: Parrales Santos, Jhonny Ningell (author)
• Формат: bachelorThesis
• Опубликовано: 2020
• Предметы: Arroz; Calidad molinera; Variedades; Manejo agronómico
• Online-ссылка: http://dspace.utb.edu.ec/handle/49000/8425