Hulled rice conditioning method under vacuum state
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A technology of tempering and brown rice, applied in application, grain processing, grain milling, etc., can solve problems affecting processing and eating quality, reduced rice yield, prone to cracks and broken rice, etc.
Active Publication Date: 2014-12-17
NORTHEAST AGRICULTURAL UNIVERSITY
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Low-moisture brown rice has high hardness and brittleness, and is prone to cracks and broken rice during the rice milling process, so the broken rice rate increases and the rice production rate decreases, and the surface finish of the rice is low, and the precision of the finished product is uneven. Increased energy consumption for rice milling
In actual production, the traditional treatment method
Method used
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specific Embodiment approach 1
[0009] Specific implementation mode one: the research on the process parameters of brown rice vacuum conditioning is realized by the following steps: the impact of vacuum conditioning time on the whole polished rice rate, five levels of conditioning time 10, 30, 50, 70, 90min are selected, and brown rice is processed Treatment, under the conditions of vacuum degree of 40 kPa and humidification amount of 1.5%, the change of the whole milled rice rate was measured, and the influence of different tempering time on the whole milled rice rate was studied. The influence of vacuum degree on the rate of whole polished rice, five levels of vacuum degree of 20, 30, 40, 50, 60kPa were selected to treat brown rice. The change of polished rice rate, to study the influence of different vacuum degrees on the polished rice rate. The influence of humidification amount on the rate of polished rice, five levels of humidified amount of 0.5, 1.0, 1.5, 2.0, 2.5% were selected to treat brown rice. ...
specific Embodiment approach 2
[0010] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in the step one, three levels of tempering time 30, 50, and 70min are selected, and under the condition that the degree of vacuum is 40kPa and the amount of humidification is 1.5%, brown rice is processed treatment, and measure the change of the rice polishing rate. Other components and steps are the same as the specific implementation method one.
specific Embodiment approach 3
[0011] Specific embodiment three: the difference between this embodiment and specific embodiment one is that in step one, three levels of vacuum degrees of 30, 40, and 50 kPa are selected, and the vacuum air conditioning time is 30 minutes, and the humidification amount is 1.5%. The unpolished rice was processed, and the change of the polished rice rate was measured. Other components and steps are the same as the specific implementation method one.
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Abstract
The invention provides a hulled rice conditioning method under a vacuum state. A hulled rice vacuum-conditioning technology is characterized in that hulled rice is subjected to comprehensive processing of dampening and infiltrating by hydrothermal functions and certain infiltrating time. On the basis that an original rice milling technology and equipment is not changed, a hulled rice vacuum-conditioning working procedure is added in the original technology before clean hulled rice subjected to grain and hulled rice separation enters a first rice husking machine between working procedures of hulling and rice husking for hulled rice conditioning. The hulled rice (of which the moisture content is 12.5%) is taken as a raw material, the hulled rice is conditioned in vacuum environment to research an influence rule to a head rice rate by vacuum conditioning time, a vacuum degree and humidification capacity in different vacuum conditioning control parameters, and test conditions are further optimized by response surface analysis on the basis of a single factor test. A result shows that optimal vacuum conditioning parameters are as follows: the vacuum conditioning time is 30min, the vacuum degree is 40kPa, the humidification capacity is 1.6%, and at the time, the head rice rate is about 72.54%.
Description
technical field [0001] The invention relates to the field of agricultural product processing, in particular to a method for tempering brown rice in a vacuum state, which is applied to the refining and processing of brown rice. Background technique [0002] my country is the largest rice producing country in the world. For a long time, rice processing is mainly based on mechanical rice milling, which is carried out under relatively high pressure friction, so that the cortex of brown rice is milled to achieve the purpose of peeling. Long-term storage of rice reduces moisture, and the moisture content after storage is generally around 12% to 13%, while the optimum moisture content of brown rice is around 15% to 16%. Low-moisture brown rice has high hardness and brittleness, and is prone to cracks and broken rice during the rice milling process, so the broken rice rate increases and the rice production rate decreases, and the surface finish of the rice is low, and the precision ...
Claims
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Application Information
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