The diversity of whole rice grains with black and red pericarp has been valued in Brazil due to its different characteristics of color, texture, and also due to the association with health benefits. This work aimed to evaluate the physicochemical, cooking, and textural characteristics of different samples of polished and whole rice grains from different varieties marketed in Brazil. A total of 28 samples were collected and divided into 6 groups: polished white rice, white polished parboiled rice, whole white rice, whole red rice, whole black rice, and whole wild rice. Moisture content, crude protein, ash, mineral content, hardness, and adhesiveness were analyzed. The cooking quality was evaluated through the determination of cooking time, swelling ratio, and volume expansion ratio. A strong correlation between the protein content and the hardness value of cooked grains was observed. The polished samples showed the lowest ash and mineral values and the shortest cooking time. A strong correlation was also observed for the volume expansion ratio and hardness of cooked samples. The data obtained contribute to a better understanding of the quality of the rice marketed in Brazil and demonstrate a large variation among samples in terms of physicochemical, cooking, and texture properties.
A Engenharia Dirigida por Modelos (Model-driven Engineering -
MDE) é uma abordagem para o desenvolvimento de software que visa produzir código fonte a partir da especificação e transformação de modelos. Apesar de sua aplicação ser bem sucedida na indústria, a MDE ainda não se tornou um padrão de fato na implementação de sistemas devido a, dentre outros fatores, a forma que ela tem sido ensinada nas universidades. Este artigo relata a experiência no ensino de uma disciplina sobre esse assunto no Mestrado Acadêmico em Ciência da Computação da Universidade Estadual do Ceará, descrevendo a metodologia adotada, as principais dificuldades enfrentadas e soluções encontradas. Também é apresentada uma avaliação da disciplina, na qual a maioria dos alunos aprovaram a metodologia proposta e afirmaram que a disciplina ajudou na compreensão e na forma de realizar e usar a modelagem de software.
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