Production Of Carotenoids From Microalgae Cultivated Using Agroindustrial Wastes

The aim of this work was to evaluate the production of carotenoids from microalgae Phormidium autumnale cultivated using agroindustrial wastes. The carotenoid profile from microalgae biomass was assessed by high performance liquid chromatography coupled with a photodiode array and mass spectrometry detectors. A total of twenty carotenoids were separated from the biomass. The all-trans-β-carotene (70.22 μg/g), all-trans-zeaxanthin (26.25 μg/g), all-trans-lutein (21.92 μg/g), all-trans-echinenone (19.87 μg/g) and cis-echinenone (15.70 μg/g) were the major ones. For the production of single-cell carotenoids it is possible to estimate a total carotenoid production of up to 107,902.5 kg/year in an industrial scale. Based on these results, we observed the potential of P. autumnale to the production of microalgal carotenoid in agroindustrial wastewater. © 2014

The use of ultrasound and slightly acidic electrolyzed water as alternative technologies in the meat industry

The quality of meat from different animal species is defined by chemical, physical sensory and microbiological characteristics, which can be influenced by procedures during the slaughter of animals. Technologies such as ultrasound (US) and slightly acidic electrolyzed water (SAEW) are being studied in order to assist in food processing and in developing methods that are economically viable and environmentally sustainable. The aim of this paper is to discuss the relationship between US and SAEW in relation to tenderness, microbiology, and oxidation of meat. The meat industry was a pioneer in the use of the ultrasound, which initially aimed to determine the layer of fat on carcasses and subsequently improve the tenderness of the meat. Recently studies mention that the ultrasound and SAEW can influence the microbiological parameters. The combination of both technologies should also be considered, with the possibility of enhancing the antimicrobial effects. However, there is little information regarding oxidative parameters promoted in meat for these two alternative technologies, where the individual or when interspersed use. Knowing the actions and consequences of ultrasound and SAEW in meat will enable the opening of new perspectives about the application of these technologies in the meat industry

Aplicação da Calorimetria Exploratória Diferencial (DSC) para Determinação da Pureza de Fármacos Candidatos a Materiais de Referência Certificados

O trabalho aborda um estudo comparativo das técnicas analíticas instrumentais empregadas na determinação de pureza de compostos orgânicos, como a Cromatografia a Líquido de Alta Eficiência, com a Calorimetria Exploratória Diferencial, visando avaliar a sua aplicação para a determinação direta da pureza de fármacos candidatos a materiais de referência certificados

NANOGRAPHENES IN LAYERED HETEROSTRUCTURES

International audienc