A method for producing malic acid by fermenting wheat bran hydrolysis sugar
A technology of wheat bran and wheat bran powder, which is applied in the field of fermentation, can solve the problems of low utilization rate of wheat bran and the like, and achieve the effects of alleviating energy crisis, low sugar loss and low production cost
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Embodiment 1
[0022] A, the preparation of wheat bran hydrolyzate
[0023] Remove impurities from the wheat bran, place it in a hot air drying oven, and dry it at 80°C for several hours. The dried wheat bran is crushed with a plant pulverizer, passed through a 60-mesh sieve, and the wheat bran powder is packed in a sealed bag for subsequent use.
[0024] Take 200g of wheat bran powder, add 2.0L of dilute sulfuric acid solution with a mass concentration of 3%, stir and mix well, react at 121°C for 1h, cool, filter, take the filtrate, and add excess Ca(OH) to the filtrate 2 Adjust the pH to 10-11, centrifuge at 8000r / min for 10min, take the supernatant, add dilute sulfuric acid with a mass concentration of 3% to the supernatant to adjust the pH to neutral, centrifuge at 8000r / min for 10min, take The supernatant, that is, the hydrolyzed sugar of wheat bran is obtained.
[0025] B. Hydrolyzate detoxification treatment
[0026] Add 200g of activated carbon to the wheat bran hydrolyzate obtain...
Embodiment 2
[0036] A, the preparation of wheat bran hydrolyzate
[0037] Remove impurities from the wheat bran, place it in a hot air drying oven, and dry it at 80°C for several hours. The dried wheat bran is crushed with a plant pulverizer, passed through a 60-mesh sieve, and the wheat bran powder is packed in a sealed bag for subsequent use.
[0038] Take 15kg of wheat bran powder, add 150L of dilute sulfuric acid solution with a mass concentration of 3%, stir and mix well, react at 121°C for 1h, cool, filter, take the filtrate, and add excess Ca(OH) to the filtrate 2Adjust the pH to 10-11, centrifuge at 8000r / min for 10min, take the supernatant, add dilute sulfuric acid with a mass concentration of 3% to the supernatant to adjust the pH to neutral, centrifuge at 8000r / min for 10min, take The supernatant, that is, the hydrolyzed sugar of wheat bran is obtained.
[0039] B. Hydrolyzate detoxification treatment
[0040] Add 15kg of activated carbon to the wheat bran hydrolyzate obtaine...
Embodiment 3
[0050] A, the preparation of wheat bran hydrolyzate
[0051] Remove impurities from the wheat bran, place it in a hot air drying oven, and dry it at 80°C for several hours. The dried wheat bran is crushed with a plant pulverizer, passed through a 60-mesh sieve, and the wheat bran powder is packed in a sealed bag for subsequent use.
[0052] Take 100g of wheat bran powder, add 1.0L of dilute sulfuric acid solution with a mass concentration of 3%, stir and mix well, react at 121°C for 1h, cool, filter, take the filtrate, and add excess Ca(OH) to the filtrate 2 Adjust the pH to 10-11, centrifuge at 8000r / min for 10min, take the supernatant, add dilute sulfuric acid with a mass concentration of 3% to the supernatant to adjust the pH to neutral, centrifuge at 8000r / min for 10min, take The supernatant, that is, the hydrolyzed sugar of wheat bran is obtained.
[0053] B. Hydrolyzate detoxification treatment
[0054] Add 100g of activated carbon to the wheat bran hydrolyzate obtain...
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