In the early years, rice bran was often used as animal feed. With the in-depth study of rice bran, it was found that it can be used to extract oil. The oil content of rice bran is not high, about 18%~20%, which is lower than other oilseeds, but rice bran is easy to obtain and does not occupy extra land resources.
In the processing of rice bran oil, the rice bran oil extraction process is a commonly used processing technology, but the powder degree of rice bran is high, and direct extraction affects the oil effect. In addition, rice bran contains a variety of biological enzymes such as lipase, which makes rice bran very easy to rancid, affecting the stability of rice bran during storage, transportation, and oil production. In order to solve this problem, the rice bran oil processing requires pretreatment of rice bran first. The expansion process is currently a common pretreatment process for producing rice bran oil.
The expansion-pretreatment process can puff rice bran with high powder content into a granular structure with high porosity and good permeability. At the same time, high temperature can passivate the activity of biological enzymes such as esterase in rice bran, thereby improving the stability of the rice bran, reducing the rancidity rate of oil, and facilitating the subsequent production and processing of the oil plant.
The expansion-extraction process is commonly used to produce rice bran oil. The wet puffing method can fully destroy the internal structure of rice bran. The puffed material has a good degree of molding, a small powder content, a large bulk density, and a large internal porosity, which is conducive to subsequent extraction. The activity of biological enzymes such as esterase in the puffed rice bran is passivated, which slows down the recovery of the acid value during storage and transportation.
In the wet puffing process, the non-hydratable phospholipids in the rice bran are combined with proteins, starch, etc. under the action of moisture, heat, extrusion and kneading, and remain in the meal after extraction, so that the extracted crude oil phospholipids are reduced and the quality of oil is improved. The rice bran oil after wet puffing is extracted, with high oil yield, good oil quality, fast production efficiency, and can meet the production expectations of the rice bran oil plant. Therefore, it is widely used in the rice bran oil processing plant.
The expansion-extraction process is a commonly used processing technology for industrial production of rice bran oil. It has a series of advantages such as large output, high efficiency, high oil yield, and high degree of automation. For rice bran, with low oil content, it can fully extract oil, and the residual oil in the cake can be controlled within 1%, so that the oil plant can achieve ideal benefits. The rice bran oil after extraction is refined to remove impurities and harmful substances, and can be sold on the market after inspection.
Henan Huatai Cereals and Oils Machinery Co., Ltd. provides customers with a full set of rice bran oil processing machine. Whether it is pressing or extraction, it can customize solutions and equipment according to production needs, and provide free installation and commissioning, process training and other services for rice bran oil plants. The manufacturer has been engaged in the production of cooking oil processing equipment for 37+ years, with many project cases, rich project experience, high customer repurchase rate, and thoughtful service. Welcome to visit the factory for on-site inspection.
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