RESUMEN
This study aims to evaluate the effects of in vitro digestion of rice and common bean blends on phenolics content and profile. Black and carioca beans were used as common bean sources. Blends consisted of 25:75, 50:50, and 75:25 polished rice:beans (w/w). Pure rice or pure beans were also analyzed. Phenolic compounds were determined in raw, cooked, and digested samples. The glucose release through in vitro digestion was slower as the proportion of black beans or carioca beans increased. Starch digestibility ranged between 41.1 in 100% carioca bean to 84.4% in 100% rice. Hydroxybenzoic acid, ferulic acid, p-coumaric acid, catechin, and epicatechin were the most abundant phenolics detected in the studied samples. Considering the content of phenolic compounds determined in the raw, cooked, and digested grains, only a small fraction was available for absorption in the gut, with amounts varying from 0.1 to 0.6 µg·g-1.
Asunto(s)
Oryza/química , Phaseolus/química , Fenoles/análisis , Almidón/química , Almidón/farmacocinética , Catequina/análisis , Catequina/química , Culinaria , Digestión , Glucosa/farmacocinética , Hidroxibenzoatos/análisis , Hidroxibenzoatos/química , Fenoles/química , Almidón/análisisRESUMEN
Thirteen wheat genotypes were grown in four regions in Brazil: Cachoeira do Sul (CDS), Santo Augusto (STA), São Gabriel (SAG), and Vacaria (VAC). The principal component analysis explained between 88.3% and 99% of the growing location separation, depending on genotype. Among the 13 genotypes analyzed, TW ranged from 73.75 to 79.83 kg/hL. Final viscosity, gluten strength, extensibility, and falling number exhibited the highest influence on growing region discrimination. STA wheat was selected for the second stage of the study to evaluate the quality of cooked grains. The genotype TBIO Toruk had the longest cooking time of 36.92 min. For most of the studied genotypes, the yellowness reduced after cooking. Damaged grains exhibited values varying from 3.6% to 25.29%. At the end of in vitro digestion, the genotypes were divided into two groups: five genotypes had digestibility in the range of 51.93-58.13%, and eight presented 72.74-84.54% of starch hydrolysis.