Comparative Studies between Conventional and Microwave Assisted Extraction for Rice Bran Oil

Area of Science:

• Agricultural Chemistry
• Food Science and Technology
• Green Chemistry

Background:

• Rice bran oil (RBO) is a valuable product with significant nutritional and industrial applications.
• Conventional solvent extraction methods for RBO can be energy-intensive and may involve harsh chemicals.
• There is a need for more sustainable and efficient extraction techniques for RBO.

Purpose of the Study:

• To compare the efficiency of microwave-assisted extraction (MAE) with conventional solvent extraction (CSE) for RBO.
• To analyze the yield and chemical composition of RBO obtained by both methods.
• To evaluate the natural antioxidant components and oryzanol content in RBO.

Main Methods:

• Extraction of RBO using both MAE and CSE.
• Analysis of functional groups and components in the extracted RBO.
• Quantification of antioxidant activity using DPPH assay.
• Determination of oryzanol content via UV-visible spectrophotometry.

Main Results:

• MAE proved to be an effective and green alternative for RBO extraction.
• Extraction yields were comparable between MAE and CSE.
• MAE effectively preserved the natural antioxidant components and oryzanol content in RBO.
• DPPH assay confirmed the presence and activity of natural antioxidants.

Conclusions:

• Microwave-assisted extraction is a viable, eco-friendly method for obtaining high-quality rice bran oil.
• MAE offers comparable extraction efficiency to conventional methods while being more sustainable.
• The study highlights the potential of MAE for preserving bioactive compounds in RBO.