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Research Paper | Chemical and Process Engineering | Morocco | Volume 11 Issue 11, November 2022

Optimization of Walnut Nut Extraction Yield by using the Response Surface Methodology

Abstract: This study focuses on improving the aqueous extraction of walnut brown. Optimal extraction conditions, i.e. pH, temperature and duration, were determined using an orthogonal Composite Centred Design (CCD) with iso-rotation. The ANOVA results indicated that pH has a linear and quadratic effect, temperature, and interaction terms (Duration-pH), (T?-Duration), have a significant influence on extraction yield. In addition, the proposed second-order regression model is consistent with the experimental data with a high coefficient of determination ( R- square (adjusted) = 96.53%). According to the response optimization of Statgraphycs software, the optimum conditions for extraction of walnut brown are: pH 8, temperature 80 ?C and extraction time 9 minutes. Under these conditions, the experimental extraction yield is 96%, which is close to the value predicted by the statistical design (102%).

Keywords: Modelization, Extraction, Walnut, Experimental Design, Optimization

Edition: Volume 11 Issue 11, November 2022,

Pages: 500 - 504