Traditional traditional pressing methods are no longer sufficient for modern industrial production. Today, we will explore the scientific methods of modern, large-scale rice bran oil extraction from the perspective of Henan Huatai Cereals and Oils Machinery Co., Ltd., a leading domestic oil and fat machinery company.
Huatai Oil Machinery: Three Core Technical Stages of Rice Bran Oil Extraction
Leveraging years of R&D experience, Henan Huatai Cereals and Oils Machinery Co., Ltd. has optimized the rice bran oil extraction process into three closely linked core stages, ensuring high oil yield and superior quality.
Stage 1: Critical Pretreatment—Rice Bran Stabilization
This is the first step that determines the success of the entire rice bran oil extraction process. Huatai Oil Machinery provides efficient expansion stabilization technology.
Principle: Instantaneous high-temperature, wet heat treatment inactivates lipase and inhibits microbial activity.
Huatai’s advantage: Its equipment precisely controls temperature, moisture, and processing time, achieving optimal stabilization while maximizing the preservation of nutrients in the rice bran. Stabilized rice bran can be stored for long periods without deterioration, paving the way for subsequent centralized, large-scale production.
Phase 2: Core Rice Bran Oil Extraction – High-Efficiency Solvent Extraction
The stabilized rice bran is then sent to the rice bran oil extraction plant. This is currently the most economical and efficient method for industrially extracting vegetable oils.
Principle: A food-grade solvent (usually n-hexane) is used to dissolve the oil in the rice bran to form a mixed oil. The solvent is then recovered through evaporation and steam stripping to produce crude rice bran oil.
Huatai’s Advantages: Huatai’s specialized rice bran extractor features advanced design, low solvent consumption, and high extraction efficiency. Its closed, automated production system significantly enhances safety and meets strict environmental standards.
Phase 3: Quality Enhancement – Rice Bran Oil Refining
The extracted crude rice bran oil has a high acid value, dark color, and contains wax. It must be refined to become a clear, safe edible oil. This is the process that best demonstrates Huatai’s technological strength. Its fully continuous rice bran oil refining line includes:
1) Degumming: Removal of phospholipids.
2) Deacidification: Neutralization of free fatty acids through physical or chemical methods, significantly reducing the acid value. Huatai’s physical refining (steam distillation) technology is particularly suitable for high-acid-value rice bran oil, reducing waste and producing higher-quality finished oil.
3) Decolorization: White clay is used to absorb pigments and improve oil color.
4) Dewaxing: A unique step for rice bran oil, removing waxes through freezing, crystallization, and filtration to prevent precipitation at low temperatures.
5) Deodorization: Odors and volatile components are removed under high-temperature, high-vacuum conditions, enhancing the oil’s flavor.
After these five refining steps, rice bran oil becomes clear and bright, with a high smoke point and a mellow taste, while its nutritional value is fully preserved.
Difference from small oil presses: Why choose an industrialized approach?
Many people ask, can’t we use a screw press for direct pressing? The answer is yes, but there are significant limitations:
1) Low oil yield: The pressing method results in high residual oil in the cake, wasting valuable resources.
2) Difficulty in quality control: The high acid value issue cannot be effectively addressed, affecting the flavor and shelf life of the finished oil.
3) Unable to scale: Rice bran stabilization is difficult to handle, making it unsuitable for continuous large-scale production.
Henan Huatai Cereals and Oils Machinery Co., Ltd. offers comprehensive solutions, from single machines to complete turnkey rice bran oil mill plants, helping customers enhance the value of the entire industry chain, from raw materials to high-end bottled oil.
Conclusion
If you are planning to invest in the rice bran oil industry or need to improve the efficiency of your existing rice bran oil production line, Henan Huatai Cereals and Oils Machinery Co., Ltd.’s expertise and proven experience will make it your most reliable partner. Visit our website for customized technical solutions and work together to develop this vast treasure trove of “rice gold.”
Website: https://ricebranoilpress.com/
Email: info06@cnoilmachine.com