Case Sharing on the Application of Cold Pressing and Hot Pressing Technologies in Export Edible Oil Production

Application Cases of Cold Pressing and Hot Pressing Technologies in Export Edible Oil Production

In the global edible oil market, the choice of production technology is crucial for enterprises to ensure product quality and production efficiency. This article will provide a detailed analysis of the application, advantages, and disadvantages of cold pressing and hot pressing technologies in edible oil production.

Basic Principles and Processes of Cold Pressing and Hot Pressing Technologies

Cold pressing is a mechanical squeezing method that extracts oil at a relatively low temperature (usually below 60°C). The advantage of this technology is that it can effectively retain the natural nutrients and flavor in the oil. For example, cold - pressed olive oil can retain up to 90% of vitamin E and other antioxidants. In contrast, hot pressing technology involves heating oilseeds to a high temperature (usually between 100 - 120°C) before squeezing. This can significantly increase the oil yield, generally increasing the yield by about 10 - 15% compared to cold pressing.

Comparison of the Two Technologies

When it comes to operation complexity, cold pressing is relatively simple because it requires less temperature control and heating equipment. However, the slow pressing speed leads to lower production efficiency. Hot pressing, on the other hand, has higher requirements for temperature control, but it can achieve large - scale and high - speed production. In terms of energy consumption, hot pressing consumes more energy due to the need for heating, while cold pressing is relatively energy - efficient.

In terms of equipment maintenance, cold - pressing equipment has a relatively long service life because it operates at a low temperature. Hot - pressing equipment, due to long - term high - temperature operation, may require more frequent maintenance and part replacement.

Process Selection for Different Enterprises

For small - and medium - sized enterprises targeting high - end markets, cold pressing technology is a better choice. For example, a small - scale olive oil producer in Italy focuses on the production of high - quality cold - pressed olive oil, which is well - received in the European and American high - end markets. For large - scale enterprises aiming at mass - market products, hot pressing technology can meet the demand for large - scale production. A well - known soybean oil enterprise in China uses hot - pressing technology to ensure a high oil yield and stable supply.

FAQ

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