Method for preparing high-quality rapeseed oil through integration of low-temperature technologies

Abstract

The invention discloses a method for preparing high-quality rapeseed oil through integration of low-temperature technologies, belongs to the technical field of oil processing, and innovates and develops a series of production processes such as low-temperature pressed rapeseed oil degumming, decolorization and the like. Technologies such as PLA-PLC double-enzyme combined biological degumming, one-step decolorization with a low-activity decolorizing agent and the like are integrated, a proper rapeseed oil refining process technology is established, and trans-fatty acid in oil is reduced while vitamin E, phytosterol and other natural lipid active substances are reserved to the greatest extent. Consumption and emission reduction purposes are effectively achieved while the quality of rapeseed oil is improved, degeneration of rapeseed cake byproduct protein is reduced significantly, and the development and utilization value of the protein is increased.

Description

technical field [0001] The invention relates to a method for preparing high-quality rapeseed oil integrated with low-temperature technology, and belongs to the technical field of oil processing. Background technique [0002] China is not only a big oil production and oil consumption country, but also a big oil and oil processing country. As far as oil processing is concerned, my country has the largest oil processing capacity and the largest number of enterprises in the world. According to statistics, as of 2008, the national oil processing capacity was 100 million tons, the refining capacity was 30 million tons, the total output of edible vegetable oil was 24 million tons, and the refined oil output was 18 million tons. The total value reaches 14 billion yuan / year. The oil industry has become the second largest agricultural and sideline food processing industry next to the slaughtering and meat processing industry, accounting for 20% of its share, and has a very important...

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Problems solved by technology

Convective hot air drying is a baking method that is widely used in industrial production at present. It has low requirements for equipment, has the characteristics of simple operation, relatively fast drying speed, and good sterilization effect, but it has high energy consumption and low energy utilization rate. , and because high temperature is required in the drying process, it will cause a certain degree of damage to the taste, appearance and nutritional content of the product, which is not an efficient and effective drying method; microwave drying has many advantages, using electromagnetic waves to penetrate the medium to make it The internal molecular vibration generates heat, and the heat is generated inside the material, so that the heating rate of each part of the material is the same. The drying speed is fast, the energy consumption is low, and the drying is not affected by time and space. Large-scale industrial drying production can be carried out. It is also the current research It is a drying method that is widely used, but microwave drying has a great impact on the quality of materials. If the drying parameters are not well controlled, it will often cause great damage to the aroma and texture of materials, and because microwave radiation is harmful to the human body, during the microwave drying process In order to avoid microwave overflow, higher requirements are put forward for drying equipment, resulting in high initial cost

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