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Extração e quantificação de cafeína em energéticos através de cromatografia líquida de alta eficiência e espectrofotometria
(Universidade Tecnológica Federal do ParanáPato Branco, 2011-12-02)
Caffeine is an alkaloid, a compound containing nitrogen, which has basic properties. Caffeine is oneof the main ingredients of energy drinks, which according to its producers, are designed to increase endurance, increase ...
Utilização da cafeína como traçador de atividade antrópica na Bacia do Alto Iguacú
(Universidade Tecnológica Federal do ParanáCuritibaDepartamento Acadêmico de Química e Biologia, 2011-11-25)
The quality of water resources, which are of great importance for public supply, is being directly affected by population growth. In view of the anthropogenic influences, this study aims to assess the concentrations of ...
Estudo do processo de adsorção para remoção de cafeína utilizando a argila bentonita
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilDepartamento Acadêmico de Engenharia QuímicaEngenharia QuímicaUTFPR, 2017-11-06)
This project aims to use the adsorption process and optimizes for removal of caffeine using bentonite clay. The experiments were do in batch and the test of pH, balance and kinetic. The parameters analyzed were: pH, shaker ...
Evaluación de la concentración de cafeína en cápsulas preparadas a partir de extracto fluido de Ilex guayusa mediante espectrofotometría UV
(2020-10)
Guayusa is a plant native of the Amazon used by the natives to which several benefits are attributed, one of the main ones is its stimulating and energetic property, this is because one of the main components of guayusa ...
Evaluación de la degradación químico – biológica de una solución modelo de cafeína
(2020-08)
The present work was based on the evaluation of the chemical-biological degradation of a caffeine model solution (50 ppm), for this, it was first proposed to carry out a chemical degradation through caffeine photocatalysis ...