Ultrasound-Assisted Extraction of Sappan Wood-Kinetic Modeling Laeli Kurniasari, Mohammad Djaeni, Andri Cahyo Kumoro
Universitas Wahid Hasyim, Universitas Diponegoro
Abstract
Secang or sappan wood (Caesalpinia sappan L) contains many phytochemical compounds and has been used in foods, beverages and also in medicinal industries. Secang contains Brazilin, the main phytochemical compound and also contains xanthone, sappanchalcone and coumarin. Ultrasound-Assisted Extraction (UAE) is a recent extraction method that is considered suitable for taking phytochemical compounds and kinetic of extraction process is one important point to study. This research investigate kinetic models of sappan wood UAE process. There are four kinetic model observed, pseudo first order, second order, peleg model and power model. Extraction was conducted from 4-60 min in 500C using ethanol 60% as solvent. Result shows that UAE reduce the extraction time and increase extraction yield. All four models has high conformity with experimental data (R2>0.95). Moreover, second order and peleg model are better fit with R2 0.9798, while pseudo first order has lowest R2 0.9539
Keywords: sappan wood, UAE, kinetic model, peleg model, second order
