Anais Do III Simpósio Paranaense De Modelagem, Simulação E Controle De Processos - SIMPROC 2018 2018
DOI: 10.5380/19847521.3simproc2018.a30p222-229
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Solid-liquid extraction of bioactive compounds from yerba mate (Ilex paraguariensis) leaves

Abstract: The aqueous batch extraction of bioactive compounds from yerba mate leaves was evaluated at different temperature (20, 50, 80°C) and stirring (0, 200, 400 rpm) conditions. The chlorogenic acid (5-CQA) and caffeine (Ca) concentration over time was evaluated by two mathematical models (equilibrium-dependent and intra-particle diffusion). The kinetics data show that the extraction process approached the equilibrium about 120-180 min. The equilibrium-dependent model presented the worse quality of model adjustment… Show more

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“…The yields of arecoline increased with temperature possibly because temperature had a positive influence on the solvent penetrating the interior of the areca nut samples and promoted lixiviation. In addition, moderate increase in temperature increased the molecular mobility, softened plant cellulosic compounds, and loosened the physical structure, resulting in efficient lixiviation (Gerke et al, 2018; Torun et al, 2015). However, the yield decreased when the temperature exceeded 70°C possibly because arecoline was unstable and evaporated along with water at high temperatures.…”
Section: Resultsmentioning
confidence: 99%
“…The yields of arecoline increased with temperature possibly because temperature had a positive influence on the solvent penetrating the interior of the areca nut samples and promoted lixiviation. In addition, moderate increase in temperature increased the molecular mobility, softened plant cellulosic compounds, and loosened the physical structure, resulting in efficient lixiviation (Gerke et al, 2018; Torun et al, 2015). However, the yield decreased when the temperature exceeded 70°C possibly because arecoline was unstable and evaporated along with water at high temperatures.…”
Section: Resultsmentioning
confidence: 99%