What is oilseed softening and what are the oilseed softening requirements?
Oilseed Softening is the process of adjusting the moisture and temperature of the oilseed to make it soft and increase plasticity.This article mainly introduces what is oilseed softening and what are the requirements for oilseed softening.
1. Softening
Softening is the process of adjusting the moisture and temperature of the oilseed to make it soft and increase plasticity. In order to meet the requirements of the flaking effect, softening is indispensable for oils such as soybeans with lower oil content, rapeseeds with less water content, and cottonseeds. For soybeans, the oil content is low and the texture is hard. If the water content is low, the temperature is not high, and flaking without being softened, it will inevitably produce a lot of powder; for rapeseed with low water content (especially old rapeseed), flaking without softening, it is difficult to meet the requirements.
It should be pointed out that for oilseed with higher oil content, whether to soften should be carefully considered. For example, peanut kernels are generally not softened; newly harvested rapeseeds, when the moisture content is higher than 8%, are generally not softened, otherwise, it is easy to stick to the surface of the roll during the rolling process and cause difficulty in operation.
2. Requirements for softening of several oilseed
①Soybean
Cold pressing equipment: Screw oil press, hydraulic press.
Softening moisture:10-12%.
Softening temperature: 60℃.
Softening time: It takes about 20 minutes with a softening pot, 5-6 hours with a fire pit, and 10- 15 minutes for others.
Hot pressing equipment: Screw oil press, hydraulic press.
Softening moisture: Use screw oil press requires about 15%, hydraulic press requires 11.5-14.5%.
Softening temperature: 80℃ with screw oil press, 60-70℃ with hydraulic press.
Softening time: It takes about 20 minutes to use the softening pot, 5-6 hours to use the fire pit, and 10-15 minutes for others.
② Cottonseed
Pressing equipment: screw oil press, hydraulic press.
Softening moisture: 10-12%.
Softening temperature: about 60℃.
Softening time: It takes about 10 minutes to use a softening pot, and about 10 minutes for others.
③Rapeseed
Pressing equipment：Screw oil press, hydraulic press.
Softening moisture: About 9% with screw oil press, 10-12% with hydraulic press.
Softening temperature: 50-60℃ for screw oil press, 65-70℃ for hydraulic press.
Softening time: It takes about 12 minutes to use the softening pot pressing equipment for the screw oil press, about 10 minutes using the softening pot pressing equipment for the hydraulic press, and about 10 minutes for others.
④Sesame
Pressing equipment：Screw oil press, hydraulic press,
Softening moisture: About 8% with screw oil press, about 10% with hydraulic press.
Softening temperature: About 40℃ for screw oil press, about 105℃ for hydraulic press.
Softening time: It takes about 8-10 minutes to use the softening pot pressing equipment for the screw oil press, about 10-15 minutes using the softening pot pressing equipment for the hydraulic press.
1. Softening
Softening is the process of adjusting the moisture and temperature of the oilseed to make it soft and increase plasticity. In order to meet the requirements of the flaking effect, softening is indispensable for oils such as soybeans with lower oil content, rapeseeds with less water content, and cottonseeds. For soybeans, the oil content is low and the texture is hard. If the water content is low, the temperature is not high, and flaking without being softened, it will inevitably produce a lot of powder; for rapeseed with low water content (especially old rapeseed), flaking without softening, it is difficult to meet the requirements.
It should be pointed out that for oilseed with higher oil content, whether to soften should be carefully considered. For example, peanut kernels are generally not softened; newly harvested rapeseeds, when the moisture content is higher than 8%, are generally not softened, otherwise, it is easy to stick to the surface of the roll during the rolling process and cause difficulty in operation.
2. Requirements for softening of several oilseed
①Soybean
Cold pressing equipment: Screw oil press, hydraulic press.
Softening moisture:10-12%.
Softening temperature: 60℃.
Softening time: It takes about 20 minutes with a softening pot, 5-6 hours with a fire pit, and 10- 15 minutes for others.
Hot pressing equipment: Screw oil press, hydraulic press.
Softening moisture: Use screw oil press requires about 15%, hydraulic press requires 11.5-14.5%.
Softening temperature: 80℃ with screw oil press, 60-70℃ with hydraulic press.
Softening time: It takes about 20 minutes to use the softening pot, 5-6 hours to use the fire pit, and 10-15 minutes for others.
② Cottonseed
Pressing equipment: screw oil press, hydraulic press.
Softening moisture: 10-12%.
Softening temperature: about 60℃.
Softening time: It takes about 10 minutes to use a softening pot, and about 10 minutes for others.
③Rapeseed
Pressing equipment：Screw oil press, hydraulic press.
Softening moisture: About 9% with screw oil press, 10-12% with hydraulic press.
Softening temperature: 50-60℃ for screw oil press, 65-70℃ for hydraulic press.
Softening time: It takes about 12 minutes to use the softening pot pressing equipment for the screw oil press, about 10 minutes using the softening pot pressing equipment for the hydraulic press, and about 10 minutes for others.
④Sesame
Pressing equipment：Screw oil press, hydraulic press,
Softening moisture: About 8% with screw oil press, about 10% with hydraulic press.
Softening temperature: About 40℃ for screw oil press, about 105℃ for hydraulic press.
Softening time: It takes about 8-10 minutes to use the softening pot pressing equipment for the screw oil press, about 10-15 minutes using the softening pot pressing equipment for the hydraulic press.
