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Extraction of soybean oil from single cells
Naoya Kasai1, Yusuke Imashiro, Naofumi Morita
1Laboratory of Food Chemistry, Division of Applied Biological Chemistry, Graduate School of Agriculture and Biological Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka, 599-8531 Japan. kasai@biochem.osakafu-u.ac.jp
Journal of Agricultural and Food Chemistry
|October 2, 2003
Summary
Cellulase treatment effectively removed soybean cell walls, enabling efficient oil extraction. Pressing these treated cells yielded over 85% of the oil from oil bodies.
Area of Science:
- Biotechnology
- Agricultural Science
- Biochemistry
Background:
- Soybean oil extraction traditionally involves energy-intensive methods.
- Efficiently isolating oil from soybean cellular structures remains a challenge.
- Understanding cell wall composition is key to improving oil recovery.
Purpose of the Study:
- To investigate the efficacy of cellulase treatment for soybean cell wall digestion and oil extraction.
- To evaluate different methods for separating soybean oil from cellular components.
- To determine the optimal conditions for maximizing oil yield from single soybean cells.
Main Methods:
- Preparation of single soybean cells from autoclaved soybeans.
- Enzymatic digestion of cell walls using cellulases.
- Observation of oil body structures and oil release.
- Evaluation of oil extraction via centrifugation, n-hexane extraction, and pressing.
- Analysis of water-extractable substances and proteinase/peptidase treatments.
Main Results:
- Cellulase treatment effectively removed the primary cell wall and swelled the secondary cell wall.
- Oil droplets formed and were largely retained within the secondary cell wall.
- Water-extractable substances comprised over 60% of the cell weight.
- Pressing single cells or cellulase-treated cells achieved over 85% oil recovery.
- Protease/peptidase treatments aided oil body digestion but hindered oil-protein separation.
Conclusions:
- Cellulase-assisted cell wall digestion is a promising method for enhancing soybean oil extraction.
- Mechanical pressing of treated single cells offers an effective and efficient route to high-purity soybean oil.
- This approach facilitates easier oil-water separation and potentially reduces processing costs.