From postgraduate to undergraduate students: learning about circular economy

Frontmatter

Fractionation of orange lignocellulosic biomass and optimization of distinct methods for oil extraction

Annually, amounts of orange waste are directed into the environment. The orange waste oil is a potential source of compounds of interest and alternatives have been explored to highlight their potential. Appropriately, this study investigated the effects of oil extraction processes involving pressurized liquids (PLE) and supercritical CO 2 (SC-CO 2 ) on orange residues. The results were compared with the standard Soxhlet procedure. The optimization of the operational parameters was established based on the adjustment of different process conditions for pressure (150 and 350 bar), extraction time (20 and 60 min), and temperature (40 and 60 °C). The results indicated that the maximum oil yields for orange peel and pomace were 37.76 % and 43.39 %, respectively, for the PLE approach. The SC-CO 2 expressed maximum yields of up to 0.50 % and 0.38 % for peel and pomace, respectively. The GC-MS analysis reported the concentration of bioactive compounds after the distinct extraction methods.

Validação do histórico de enfermagem para Instituição de Longa Permanência para Idosos

Cosméticos com presença de disruptores endócrinos e gestação: percepção de risco pelos profissionais de saúde

Sociodemographic profile, nutritional status and physical activity level of elderly people participating in a physical exercise program

Seasonal variation of the water quality in an intermittent river perennified by hydraulic work: a case study of the Terra Nova river basin, Northeast Brazil

Percepción de turistas y actores clave sobre los atributos de satisfacción en el pueblo mágico de Cosalá, México

Letramento crítico em aulas de inglês

Game-based learning in engineering education: Using the Goldratt Simulator to learn about the theory of constraints