The Indian Journal of Nutrition and Dietetics

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Solvent Extraction Condition Optimization for Extracting Oil from Wood Apple Seed using Response Surface Methodology


Affiliations
1 Department of Food Science and Nutrition, Periyar University, Salem, Tamil Nadu, India
     

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The seed oils have been characterized for the nutritional and functional importance but its industrial extraction process is not yet adequately studied. The present investigation was done to optimize the pre soaking time in solvent (hexane) and extraction time in solvent extraction method to extract the oil from wood apple seed. The pre soaking time and extraction time ranged from 2 h to 10 h and was optimized using Central Composite Rotatable Design (CCRD) and the second order quadratic polynomial regression equation model. At linear and quadratic level, the pre-soaking time revealed a significant influence on oil recovery at p<0.01. The magnitude of influence of pre soaking time on oil recovery from wood apple seed was greater than extraction time. The predicted R2 of 0.7512 was in reasonable agreement with the adjusted R2 of 0.9424. Adequate precision ratio of 22.526 indicated an adequate signal for the proposed model. According to numerical and graphical optimization, the wood apple seed could be pre soaked in solvent (hexane) for 8 hours and extracted for 8 hours in Soxhlet method of extraction to get maximum oil recovery of 32.99%. The actual oil recovery at optimum point prediction of independent variables was significantly (p<0.01) agreed with the predicted oil recovery.

Keywords

Wood Apple Seed, Solvent Extraction, Hexane, Response Surface Methodology, Central Composite Rotatable Design.
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  • Solvent Extraction Condition Optimization for Extracting Oil from Wood Apple Seed using Response Surface Methodology

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Authors

Diviya Ravindran
Department of Food Science and Nutrition, Periyar University, Salem, Tamil Nadu, India
T. Poongodi Vijayakumar
Department of Food Science and Nutrition, Periyar University, Salem, Tamil Nadu, India

Abstract


The seed oils have been characterized for the nutritional and functional importance but its industrial extraction process is not yet adequately studied. The present investigation was done to optimize the pre soaking time in solvent (hexane) and extraction time in solvent extraction method to extract the oil from wood apple seed. The pre soaking time and extraction time ranged from 2 h to 10 h and was optimized using Central Composite Rotatable Design (CCRD) and the second order quadratic polynomial regression equation model. At linear and quadratic level, the pre-soaking time revealed a significant influence on oil recovery at p<0.01. The magnitude of influence of pre soaking time on oil recovery from wood apple seed was greater than extraction time. The predicted R2 of 0.7512 was in reasonable agreement with the adjusted R2 of 0.9424. Adequate precision ratio of 22.526 indicated an adequate signal for the proposed model. According to numerical and graphical optimization, the wood apple seed could be pre soaked in solvent (hexane) for 8 hours and extracted for 8 hours in Soxhlet method of extraction to get maximum oil recovery of 32.99%. The actual oil recovery at optimum point prediction of independent variables was significantly (p<0.01) agreed with the predicted oil recovery.

Keywords


Wood Apple Seed, Solvent Extraction, Hexane, Response Surface Methodology, Central Composite Rotatable Design.

References