Method for preparing cyperus esculentus edible oil by adopting spiral oil press
A technology for oily bean and edible oil, which is applied in recycling technology, fat oil/fat production, fatty substance recovery, etc. The effect of reducing the temperature of the press hall, increasing the oil yield and increasing the residence time
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Embodiment 1
[0026] S1, oily bean ultra-drying pretreatment;
[0027] Specifically, the sesame beans with full particles are selected, and the sesame beans are washed with clean water. After the cleaning is completed, the sesame beans are dried in an oven to make the water content less than 8 water.
[0028] S2, heat oil bean and mix it with rice husk;
[0029] Specifically, after heating the oily bean to 80°C to 100°C, it is mixed with the rice husk, and the amount of the rice husk added is 5% of the mass of the oilseed bean.
[0030] S3, adjust the rotation speed of the screw oil press from the original factory setting of 45 rpm to 30 rpm, and add the cold water with 4% of the oil bean mass while adding the mixed material to press to make the pressing process smooth and improve the output. When the oil rate is over 18%, edible oil and soybean cake are obtained.
Embodiment 2
[0032] The difference between Example 2 and Example 1 is that rice husks are not added, and the rest of the operation process and parameter setting are exactly the same as those of Example 1.
[0033] The oil extraction rate in this example is only 10%, and it is found through observation that the material has a high viscosity during the pressing process. Although the pressing process can be carried out smoothly without interruption, the oil extraction amount is not ideal, which is higher than that of Example 1. The rate is nearly doubled, which is mainly because no rice husk is added to reduce the viscosity of the material during the pressing of oily bean.
Embodiment 3
[0035] The difference between Example 3 and Example 1 is that the amount of rice husk added is 3% of the mass of the oilseed bean, and the rest of the operation process and parameter settings are exactly the same as those of Example 1.
[0036] The oil extraction rate in this example is only 14%, and it is observed that the material has a high viscosity during the pressing process. Although the pressing process can be carried out smoothly without interruption, the oil extraction amount is not ideal, which is higher than the oil extraction rate of Example 1. This is mainly because the amount of rice husks added is insufficient, and the viscosity of the material is not well reduced, resulting in an unsatisfactory oil extraction rate.
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