Box-behnken design for the optimization using solvent-free microwave gravity extraction of garlic oil from Allium sativum L.
Yeni Variyana (a), Raka Selaksa Charisma Muchammad (a), Mahfud Mahfud(a*)
a) Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember
Sukolilo, Surabaya 60111, Indonesia
*mahfud[at]chem-eng.its.ac.id
Abstract
Garlic (Allium sativum L.) has compounds that could be used as anti-microbial, anti-atheroschlerosis, anti-oxidant, anti-viral, anti-cholesterol, anti-diabetic, anti-hypertension, and anti-cancer. In this paper, oils was extracted from Garlic using Solvent Free Microwave Extraction (SFME) method without solvent which is as an alternative technique to produce oil without a solvent and and it has several advantages in terms of product quality. This research used Microwave Hydrodiffusion and Gravity (MHG) technique for process extraction and produce high yields of garlic oil. The highest results were obtained from this study when at 100 g, 450 W and 10 min. Response surface methodology was designed to evaluate the effects of mass of raw material (g), microwave power (W) and extraction time (min) for optimization of analytical methods. Regression models have designed and predicted experimental values well. Gas chromatography-mass spectrometry technology was used to analyze the chemical compositions of garlic oil. The results showed that sulphide compounds, like diallyl disulphide, trimethylene trisulfide, ester and alcohol which is found in garlic oil.
Keywords: Allium sativum L.; Garlic Oil; MHG; Optimization; SFME
Topic: Chemical Engineering