Pretreatment method for reducing the content of alkali metal and furfural in rice husk for brewing
An alkali metal and pretreatment technology, applied in the preparation of alcoholic beverages, etc., can solve the problems of not considering the amount of rice husk furfural, not removing the impurities of rice husk alkali metal and bran powder, and affecting the quality of liquor, etc., to achieve high value The effect of recycling
Active Publication Date: 2017-09-29
SHAOYANG UNIV
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Problems solved by technology
Although this traditional rice husk pretreatment method is easy to operate, it neither considers the potential furfural production of rice husk in the fermentation pit, nor removes the alkali metal and bran powder impurities of rice husk, thus directly affecting the quality of liquor
Method used
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Embodiment Construction
[0015] The method for yellow water pretreatment rice husk for brewing comprises the following steps:
[0016] The first step is to take out the normal fermented fresh yellow water from the cellar where the fermentation is completed, the pH value is 3.2, and set it aside;
[0017] In the second step, the rice husk is soaked in the yellow water container, and the weight ratio of the rice husk to the yellow water is 1:15. Rice husk 50Kg, yellow water 750Kg, put the rice husk and yellow water into a volume of 1m 3 Soak and mix in a pottery jar, and soak the rice husk for 6 days at a temperature of 55°C. During the soaking period, the yellow water and rice husk can be properly stirred to promote the formation of aldehydes and the dissolution of alkali metal impurities in the rice husk;
[0018] In the third step, the rice husk is dehydrated with a centrifuge, the rice husk is collected to remove the aqueous solution, the treated rice husk is put into a retort, and the steam distil...
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The pretreatment method for reducing the content of alkali metal and furfural in rice husks used for wine making is as follows: take fresh yellow water with normal fermentation, mix and soak according to the weight ratio of rice husks and yellow water 1:13-17; dehydrate with a centrifuge, and remove the aqueous solution The last rice husk is put into the retort and steamed for 50-60 minutes; after the rice husk out of the retort is washed repeatedly with clean water, the rice husk is dehydrated by a centrifuge to control the water content of the rice husk to 30-35%; the dehydrated rice husk is sent to a single-layer belt Dry in an airflow dryer to control the water content of the rice husk below 13%; store the treated rice husk in bags for use as auxiliary materials for wine making. After the method of the present invention treats the husks of brewing rice, the alkali metal content in the rice husks is reduced by 50-60%, the impurity content of bran powder is reduced by 2-4%, and the potential furfural production is reduced by 70-80%; The new use of water realizes the high-value recycling of yellow water, which not only reduces production costs, but also greatly improves the quality of liquor.
Description
technical field [0001] The invention belongs to the ecological brewing technology of auxiliary material pretreatment, in particular to a pretreatment method for reducing the content of alkali metal and furfural in rice husks used for wine making. Background technique [0002] Chinese baijiu has a long history and has become one of the six major distilled spirits in the world with its unique production technology and quality characteristics, and is deeply loved by consumers. Rice husk is used as an auxiliary material for liquor production. With its hard and reusable characteristics, rice husk mainly plays the role of loosening and ventilation in winemaking. Rice husks are used in a large amount in wine making, generally 18-22% of the grain input. Rice husk components are composed of water, organic matter (lignin, cellulose, hemicellulose), amorphous silica and a small amount of metal ions, among which pentosan generates furfural under the action of acid, and furfural brings ...
Claims
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IPC IPC(8): C12G3/02
Inventor 余有贵杨贝贝
Owner SHAOYANG UNIV