Biomaterial Database

Optimization of oil extraction from olive pomace using response surface methodology. 2013

S Meziane

Laboratory of Applied Chemistry and Chemical Engineering, University Mouloud Mammeri, Tizi-Ouzou, Algeria. smmeziane@yahoo.fr

A statistical methodology, combining Plackett-Burman design with Box-Behnken design, was applied to optimize the oil extraction process from olive pomace using hexane as solvent. Plackett-Burman design was used in the first step to evaluate the effects of five independent variables on the oil extraction yield. Temperature of extraction, time of contact, solvent-to-solids ratio and moisture content of the olive pomace were identified as significant independent variables and were further optimized by using response surface methodology based on Box-Behnken design. The optimized conditions to maximize the yield were as follows: extraction temperature at 33 , contact time at 10 min, solvent-to-solids ratio at 3.5 mL/g and moisture content at 13%. The experimental value of the yield (5.98%) at these optimum conditions was found in perfect agreement with the value predicted by model (5.80%).

UI	MeSH Term	Description	Entries
D010938	Plant Oils	Oils derived from plants or plant products.	Oils, Plant,Oils, Vegetable,Plant Oil,Vegetable Oil,Vegetable Oils,Oil, Plant,Oil, Vegetable
D012044	Regression Analysis	Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.	Regression Diagnostics,Statistical Regression,Analysis, Regression,Analyses, Regression,Diagnostics, Regression,Regression Analyses,Regression, Statistical,Regressions, Statistical,Statistical Regressions
D006358	Hot Temperature	Presence of warmth or heat or a temperature notably higher than an accustomed norm.	Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
D006586	Hexanes	Six-carbon saturated hydrocarbon group of the methane series. Include isomers and derivatives. Various polyneuropathies are caused by hexane poisoning.	Hexane,Isohexane,Isohexanes
D000069463	Olive Oil	Oil extracted from fruit of the OLIVE TREE (genus Olea).	Olive Oils,Oil, Olive,Oils, Olive
D012997	Solvents	Liquids that dissolve other substances (solutes), generally solids, without any change in chemical composition, as, water containing sugar. (Grant & Hackh's Chemical Dictionary, 5th ed)	Solvent
D031658	Olea	A plant genus of the family Oleaceae. The olive fruit is the source of OLIVE OIL.	Olive Tree,Olives,Common Olive Tree,Olea europaea,Common Olive Trees,Olive,Olive Tree, Common,Olive Trees,Olive Trees, Common,Tree, Common Olive,Tree, Olive,Trees, Common Olive,Trees, Olive