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Effect of processing parameters on coconut oil expression efficiencies
Joseph Jeremiah Mpagalile1, Brian Clarke
1Department of Food Science and Technology, Faculty of Agriculture, Sokoine University of Agriculture, Morogoro, Tanzania. jjmpagalile@yahoo.com
International Journal of Food Sciences and Nutrition
|July 16, 2005
Summary
Optimizing coconut oil extraction requires longer pressing times and finer particles for higher yields. Moderate pressure and 11% moisture content are key, with 60°C being the ideal pressing temperature.
Area of Science:
- Food Science and Technology
- Agricultural Engineering
Background:
- Coconut oil is a significant global commodity.
- Efficient oil extraction is crucial for maximizing product yield and economic viability.
Purpose of the Study:
- To investigate the impact of various process parameters on oil expression efficiency from dried coconut gratings.
- To determine optimal conditions for enhanced coconut oil extraction.
Main Methods:
- Investigated pressing time (4, 8 min), particle size (fine, coarse), pressure (3-33 MPa), moisture content (3-15%), and temperature (30-90°C).
- Utilized statistical analysis (P < 0.05) to evaluate the significance of each parameter.
Main Results:
- Longer pressing time (8 min) and finer particle size significantly increased oil expression efficiency.
- Oil yields increased with pressure up to 13 MPa, then plateaued.
- Optimum moisture content was 11% for low-pressure pressing.
- A pressing temperature of 60°C yielded higher efficiency, with no significant gain at 90°C.
Conclusions:
- Process parameters significantly influence coconut oil expression efficiency.
- Optimal conditions involve extended pressing time, finer particles, moderate pressure, specific moisture content, and controlled temperature for maximizing coconut oil yield.