This work aimed to evaluate the stability of sorghum 3‐deoxyanthocyanins (DXA) in model beverages (pH 3.5) elaborated with crude sorghum phenolic extract, containing ascorbic acid and sulphite, under fluorescent light exposure and subjected to heat treatment. There was no significant difference in the DXA degradation during storage under light exposure (24.16%) and absence of light (20.72%). DXA degradation did not differ in the presence of ascorbic acid during storage under light exposure (23.99–25.38%) and absence of light (19.87–21.74%). The addition of sulphite caused an initial bleaching reaction, but as a reversible reaction, the anthocyanin content was higher on the last day of storage compared to the first day. There were no significant differences in total anthocyanin content of all treatments subjected to the heat treatment (80 °C for 5 and 25 min). Thus, crude DXA are very stable under light, additives and heat, and may be useful as natural food colourants.

Darker pericarp sorghum genotypes have high levels of anthocyanins: natural pigments that have antioxidant potential and may serve as a natural alternative dye to replace synthetic colorants. Thus, the objective of this work was to obtain a powder dye from sorghum pericarp genotype SC 319, quantifier total phenolic compounds, total anthocyanins, and color. In addition, evaluate the stability during storage at room temperature for 30 days and test an application in gelatin gummies. There was no significant difference for total phenolic compounds during all days of storage, with values ​​between 36.80 and 37.97 mg GAE.g-1. For total anthocyanins, despite the variation in levels during storage, the values ​​obtained on the first day (2.407 mg Eq. Lut.g-1) and on the last day (2.379 mg Eq. Lut.g-1) did not differ. There was a significant difference in all colorimetric axes and the reddish hue increased during storage, ranging from 7.04 to 9.11. For the gelatin gummies, compared to the powder dye, the anthocyanins and phenolic contents were lower, but the red hue presented a high value (28.9). Therefore, it was possible to obtain a stable powder natural dye from sorghum pericarp that can provide color and bioactive compounds to foods.

A graduação em medicina gera estresse significativo devido à alta carga horária de estudo, necessidade de compreensão de conteúdos extensos e aquisição de habilidades complexas e de outros fatores psicossociais (competitividade, cobrança individual, familiar e social). Por isso, esse estudo avaliou a qualidade de vida de estudantes de medicina de uma universidade do Estado de Santa Catarina por meio do questionário WHOQOL-BREF. Dentre os 97 estudantes que participaram, a qualidade dos domínios físico e psicológico é regular e, dos domínios social e meio ambiente, boa. Qualidade do domínio físico foi estatisticamente menor entre alunos do ciclo clínico em relação aos do internato. Correlação estatisticamente significativa entre o ciclo clínico e menor satisfação com a saúde, maior com a necessidade de tratamento médico para levar a vida e menos energia para o dia a dia foram encontradas. O domínio psicológico correlacionou-se significativamente com o ciclo clínico para os itens: menor sentido de vida, menor aceitação da aparência física e menor satisfação consigo próprio.

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