A method for reducing urea and ethyl carbamate content in rice wine brewing process
A technology for urethane and rice wine brewing, which is applied in microorganism-based methods, biochemical equipment and methods, preparation of alcoholic beverages, etc., to achieve excellent inhibitory effect, reduce degradation, and inhibit the effect of urea cycle
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[0040] The preparation of the distiller's grain gluten comprises the following steps:
[0041] (1) Drying: place the rice wine distiller's grains in an electric blast drying oven, and dry at a constant temperature of 40-45°C for 22-24 hours until the distiller's grains are uniform and free of moisture;
[0042](2) Pulverizing and sieving: pulverize the dried distiller's grains with a pulverizer, and pass through a 80-100 mesh sieve;
[0043] (3) Washing and removing impurities: mix the distiller's grains powder and water at a mass ratio of 1:10-1:15, stir at 40-45°C for 2-3h, centrifuge at 4500-5000r / min for 10-15min, and take the precipitate; the purpose of this step is remove albumin;
[0044] (4) Salt extraction: add NaCl solution to the precipitate obtained in step (3), the mass ratio of the precipitate to the NaCl solution is 1:10-1:15, the concentration of the NaCl solution is 2wt%-3wt%, 40-45°C stirring and extracting 2 -3h, then centrifuge at 4500-5000r / min for 10-15...
Embodiment 1
[0060] Extraction of gluten from rice wine lees:
[0061] Place rice wine distiller's grains in an electric blast drying oven, and dry at a constant temperature of 40°C for 24 hours until the dryness is uniform and moisture-free; crush the dried distiller's grains with a pulverizer, and pass through a 100-mesh sieve; weigh an appropriate amount of distiller's grains powder, press the distiller's grains powder The mass ratio of water is 1:15, add water, add the rotor and place it on a magnetic stirrer at 45°C for 2 hours, then centrifuge at 5000r / min for 10 minutes, and take the precipitate; add NaCl solution to the precipitate, and the mass ratio of the precipitate to NaCl solution is 1: 15. The concentration of NaCl solution is 3wt%. Add the rotor and place it on a magnetic stirrer at 45°C to stir and extract for 2h, then centrifuge at 5000r / min for 10min, and take the precipitate; add NaOH solution to the precipitate, and the mass ratio of the precipitate to NaOH solution is ...
Embodiment 2
[0063] Extraction of gluten from rice wine lees:
[0064] Place rice wine distiller's grains in an electric blast drying oven, and dry at a constant temperature of 40°C for 22 hours until the dryness is uniform and moisture-free; the dried distiller's grains are pulverized with a pulverizer and passed through a 100-mesh sieve; appropriate amount of distiller's grains powder is weighed, and mixed with distiller's grains powder and The mass ratio of water is 1:10, add water, add the rotor and place it on a magnetic stirrer at 40°C for 2 hours, then centrifuge at 4500r / min for 10 minutes, and take the precipitate; add NaCl solution to the precipitate, and the mass ratio of the precipitate to NaCl solution is 1: 10. The concentration of NaCl solution is 2wt%. Add the rotor and place it on a magnetic stirrer at 40°C to stir and extract for 2h, then centrifuge at 4500r / min for 10min, and get the precipitate; add NaOH solution to the precipitate, and the mass ratio of the precipitate ...
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