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Method for comprehensively utilizing degreased rice bran

A technology for defatting rice bran and rice bran protein, applied in the field of comprehensive utilization of resources, can solve the problems of reducing the value-added rate of rice bran resources, deep separation of main components of rice bran, etc., and achieves the advantages of improving utilization rate and economic value, high comprehensive utilization rate and large economic benefit. Effect

Inactive Publication Date: 2012-08-01
郑州凯乐生物能有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above method does not deeply separate the main components of rice bran, but only separates a part of it, which reduces the value-added rate of rice bran resources

Method used

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  • Method for comprehensively utilizing degreased rice bran

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1) Add 5 times the weight of water (250g) and 1% (0.5g) liquefied enzyme to 50g defatted rice bran, stir and react at 90°C until the iodine test is complete, cool to 60°C, adjust the pH value to 4.5, add 2 % (1g) glucoamylase, saccharified for 2h, filtered to obtain residue A and supernatant A.

[0036] The supernatant A is directly used as the medium for production and fermentation: the supernatant A is adjusted to pH 5.5 with ammonia water, and then sterilized by high-temperature steam at 121°C for 15 minutes. After cooling, it is inserted into Clostridium acetobutylicum for anaerobic fermentation. 2% of the volume of the culture medium, the fermentation temperature is 32°C, and the fermentation time is 72 hours. After fermentation, a fermentation broth with a solvent content of 16.5g / L can be obtained. The ratio of acetone, butanol, and ethanol is about 3:6:1. Distillation separates acetone, butanol and ethanol.

[0037] 2) Add residue A to 5 times its weight of wat...

Embodiment 2

[0041]1) Add 5 times the weight of water and 1% liquefied enzyme to 50g defatted rice bran, stir and react at 90°C until the iodine test is complete, filter to obtain residue A and supernatant A, supernatant A is directly used for production fermentation Substratum, obtain biochemical products acetone, butanol and ethanol through fermentation according to the method of embodiment 1;

[0042] 2) Add residue A to 5 times the weight of water, adjust the pH value to 3.9, stir and react at 60°C for 5 hours, filter to obtain residue B and supernatant, wash residue B with water, filter to obtain supernatant and residue, and apply twice The supernatants were combined as supernatant B, and the pH was adjusted to 4.5 with 10% calcium hydroxide solution, and then adjusted to 9.0 with 10% ammonia water, filtered, and the obtained filter cake was washed with water for 3 times, and then dried to obtain phytate products 3.15g.

[0043] 3) Add 5 times the weight of water to the residue B, ad...

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Abstract

The invention the technical field of resource comprehensive utilization, and particularly relates to a method for comprehensively utilizing degreased rice bran. The method comprises the following steps: adding liquefying enzyme in the degreased rice bran for liquification, and carrying out solid-liquid separation to obtain supernate A and residue A, wherein the supernate A is directly used as a raw material for fermentation; adding water into the residue A, mixing to regulate the pH to be acidic, and carrying out solid-liquid separation to obtain supernate B and residue B; regulating the pH of the supernate B to be alkali, filtering, and drying the filter cake to obtain a phytate product; and adding water into the residue B, carrying out reaction between the residue B and basic protease, carrying out solid-liquid separation to obtain supernate C and residue C, carrying out post-processing on the residue C to obtain a dietary fiber (DF) product, and carrying out post-processing on the supernate C to obtain a rice bran protein product. Moreover, maltogenic amylase is added before liquification in the step 1 or enzymolysis in the step 3 for saccharification. According to the method, the comprehensive utilization rate of the degreased rice bran is high; and the generation of rubbish and pollution during the production process is reduced.

Description

technical field [0001] The invention belongs to the technical field of resource comprehensive utilization, in particular to a method for comprehensive utilization of defatted rice bran. Background technique [0002] my country's annual total rice output is about 200 million tons, and more than 10 million tons of rice bran will be by-produced in the processing process. Rice bran is rich in nutrients, including about 12-18% protein, 16-20% fat, 12% minerals, about 14% dietary fiber, and about 50% total carbohydrates. [0003] Defatted rice bran is a by-product of using rice bran to produce rice bran oil. The degreasing process inactivates the lipase in rice bran, removes undesired substances such as fungi and bacteria in rice bran, and retains the natural nutrients of rice bran. At present, most of the defatted rice bran in China is only used as feed raw materials, with low added value, and a large number of nutrients have not been reprocessed and comprehensively utilized. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P21/06C12P19/14C07F9/117A23L1/308
Inventor 杨旭李洪亮马晓建陈俊英
Owner 郑州凯乐生物能有限公司
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