Application of 2^kFull Factorial design in optimization of Solvent Free Microwave Extraction of Ginger Essential Oil

Mumtaj Shah1*, Dr. S.K. Garg2

1. Department of Chemical Engineering, SOET, ITM University, Gwalior-475001, INDIA

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2.Department of Chemical Engineering, HBTI, Kanpur-208002, INDIA

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(DOE12)

Abstract

The solvent free microwave extraction of essential oil from ginger was optimized using a 2³ full factorial design in terms of oil yield to determine the optimum extraction conditions.

Sixteen experiments were carried out with varying three parameters, extraction time, microwave power and type of sample for two levels of each.

The mathematical model applied form a first order regression equation. The predicted values calculated by the regression model were in good agreement with the experimental values.

The results showed that the Extraction time is most prominent factor followed by microwave power level and sample type for extraction process.

An average of 0.25% of ginger oil can be extracted using current setup. The optimum conditions for the ginger oil extraction using SFME were the extraction time 30 minutes, microwave power level 640 watt and sample type-crushed sample.

Solvent Free Microwave Extraction proves a green and promising technique for essential oil extraction.

Keywords: SFME, Ginger essential oil, modelling, desirability function, optimization.