SOLID‐LIQUID EXTRACTION OF BETEL LEAVES (PIPER BETLE L.)

Abstract

This work investigated the effects of extraction temperature on the quality of extract and the kinetics of solid‐liquid extraction of betel leaves. In this study, the effects of extraction temperature on the quality of extract were evaluated by comparing the concentration of its active compounds, including hydroxychavicol (HC) and eugenol (EU). The results indicate that the increase of extraction temperature led to the increase of the concentration of HC. EU concentration was decreased when temperatures higher than 60C were used. The kinetics data show that the extraction process reached equilibrium in a short time – about 40 min. Two models, namely equilibrium‐dependent solid‐liquid extraction (EDSLE) model and diffusion‐dependent solid‐liquid extraction model were applied to describe the extraction process. By comparing the values of correlation coefficients, the EDSLE model was found to be more suitable in describing the extraction process as it provided a better fit to the experimental data. PRACTICAL APPLICATIONS Betel leaves is one of the invaluable medicinal plants that has multiple useful bioactivities found in Malaysia. In this work, the effect of extraction temperature on the quality of the extract of betel leaves was investigated by quantifying the change of two active compounds, namely hydroxychavicol and eugenol. This is because the bioactivities depend on the content of the phytochemicals within the plant. The critical extraction temperature was determined based on the findings. Aside from this, the kinetics of the extraction process was also studied. Two mathematical models including equilibrium‐dependent solid‐liquid extraction (EDSLE) model and diffusion‐dependent solid‐liquid extraction model were used to predict the extraction process. EDSLE, which is simple and easy to be solved, was applicable in simulating the extraction process. The findings from this study are useful in understanding and optimizing the solid‐liquid extraction process of betel leaves.

Comparison of Citronella Oil Extraction Methods from Cymbopogon nardus Grass by Ohmic-heated Hydro-distillation, Hydro-Distillation, and Steam Distillation

“…Changes in solute concentration in the liquid phase affected the mass transfer of the extraction process (Pin et al 2011).…”

KINETICS OF AQUEOUS EXTRACTION OF MATE (ILEX PARAGUARIENSIS) LEAVES

“…A secondary important goal involved the use of two classical models usually presented in the literature (Semenov et al . 2000; Stapley 2002; Pin et al . 2011) to reproduce correctly the experiments carried out in the extractor operated batchwise.…”

Solid-liquid extraction of bioactive compounds from yerba mate (Ilex paraguariensis) leaves

“…This model is based on the solute mass transfer between solid and liquid phases, driven by the solute concentration gradient at time and the equilibrium solute concentration. The internal diffusion is neglected [19]. A mass balance for the solute describes these considerations (Eq.…”

“…Several mathematical models are used to describe the mechanisms involved on extraction kinetics of bioactive compounds from plants. Equilibrium-dependent and intraparticle diffusion are extensively reported in the literature [17][18][19][20]. So, the aim of this work was to evaluate the kinetic in yerba mate individual bioactive compounds (chlorogenic acid and caffeine) extraction.…”