How to extract oil from Camellia oleifera
Camellia oleifera is an oil crop with high economic value. Its seeds are rich in oil and can be used to extract high-quality edible oil. In recent years, with the rise of healthy diet, Camellia oleifera oil has attracted much attention due to its rich nutrition and unique flavor. This article will introduce in detail the steps, tools and precautions for extracting Camellia oleifera oil, and attach relevant data for reference.
1. Basic steps for pressing Camellia oleifera oil
The process of extracting camellia oil mainly includes picking, drying, shelling, pressing, filtering and other links. Here are the specific steps:
| steps | Operation content | Things to note |
|---|---|---|
| 1. Picking | Choose mature camellia oleifera fruits to avoid green or rotten fruits | Process as soon as possible after picking to avoid mildew |
| 2. Drying | Spread the camellia oleifera fruits and dry them for 3-5 days to allow the shells to crack naturally. | Avoid exposure to the sun to avoid oxidation of oils |
| 3. Shelling | Manually or mechanically remove the husk and separate the camellia seeds | Ensure the integrity of the kernels and reduce breakage |
| 4. Press | Use an oil press to cold press or hot press Camellia oleifera seeds | Cold pressing retains more nutrients, while hot pressing has a higher oil yield. |
| 5. Filter | Let the squeezed crude oil stand or filter to remove impurities | Use food grade filter cloth to ensure hygiene |
2. Tools and equipment for tea oil extraction
The choice of oil extraction tools directly affects the oil yield and oil quality. The following are common oil extraction equipment and their characteristics:
| Tool type | Features | Applicable scenarios |
|---|---|---|
| Manual oil press | Simple operation, low cost and low oil yield | small family production |
| Spiral oil press | High efficiency, oil output rate can reach 30%-40% | Small and medium-sized processing plants |
| Hydraulic oil press | Uniform pressure, pure oil, but slower speed | High quality oil production |
3. Nutritional value and market data of Camellia oleifera oil
Camellia oleifera oil is rich in unsaturated fatty acids, vitamin E and other nutrients, and its market demand has grown steadily in recent years. Here are the relevant data:
| Nutritional information | Content (per 100g) | Efficacy |
|---|---|---|
| unsaturated fatty acids | 85%-90% | Lower cholesterol and protect cardiovascular system |
| Vitamin E | 15-20mg | Antioxidant, delay aging |
| Squalene | 100-200mg | Enhance immunity |
| Year | Camellia oleifera oil production in China (10,000 tons) | Market size (100 million yuan) |
|---|---|---|
| 2020 | 72.5 | 150 |
| 2021 | 78.3 | 180 |
| 2022 | 85.6 | 210 |
4. Common problems and solutions during the oil extraction process
During the oil extraction process, you may encounter problems such as low oil yield and turbid oil quality. The following are common problems and solutions:
| question | Reason | Solution |
|---|---|---|
| Low oil yield | Camellia seeds are not fully dried or the pressing temperature is insufficient | Extend the drying time and adjust the pressing temperature |
| The oil is turbid | Incomplete filtration or improper storage | Filtered multiple times, sealed and protected from light |
| Odor | The raw materials are moldy or the equipment is not cleaned thoroughly. | Strictly select raw materials and clean equipment regularly |
5. Summary
Extracting oil from Camellia oleifera is a highly technical job, requiring attention to raw material selection, tool use and process control. Through scientific oil extraction methods, high-quality Camellia oleifera oil can be produced to meet the needs of healthy diet. As the market demand for natural edible oil increases, the camellia oleifera industry has broad prospects and deserves further exploration and development.
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