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Method for producing cello-oligosaccharide
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A technology of cello-oligosaccharide and a manufacturing method, which is applied in the direction of fermentation, etc., can solve the problems of time-consuming, difficulty in maintaining constant and stable discharge of extrusion die pressure, and expensive equipment cost.
Pending Publication Date: 2017-11-03
FOOD IND RES & DEV INST
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Problems solved by technology
However, due to the pretreatment of high-temperature and high-pressure water or the pre-treatment of high-temperature and high-pressure steam-explosion, the structures of the required devices or equipment are mostly complicated, and the cost of equipment is relatively expensive. , which is carried out in batches, and it takes many times of depressurization and boosting to achieve steam explosion of raw materials, which is more time-consuming
Therefore, the production method of oligosaccharides by pretreatment of high temperature and high pressure water or pretreatment of high temperature and high pressure steam explosion requires a relatively high cost in terms of time and cost.
In addition, it is currently known that if the existing continuous extrusion steam explosion method is used to pretreat fiber raw materials with high water content (such as water content above 40%), it will be difficult to maintain a constant and stable extrusion die pressure Discharge and other issues
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Embodiment 1
[0074] The Effect of Steam Explosion Temperature on the Yield of Cellooligosaccharides
[0075] A. Experimental method
[0076] 1. Crush the wheat bran until it passes through an 80MESH sieve.
[0077] 2. After crushing, treat with amylase to remove starch.
[0078] 3. Put the starch-removed wheat bran into the extruder feeder.
[0079] 4. Carry out continuous extrusion steaming and explosion procedure:
[0080] The fixed parameters are feeding and water feeding at the same time, including 50% wheat bran and 50% moisture; the total production capacity is 30 kg per hour; the spindle speed of the extruder is 100 rpm; the back pressure of the extruder is controlled at 28-33 kg / cm 2 . Then carry out the continuous extrusion steam explosion of the following different temperature combinations respectively, to obtain steam explosion products of different temperatures:
[0081] (a) The first group of temperature combinations is set at 80, 110, 110, 110, and 110°C from the first t...
Embodiment 2
[0096] A. method
[0097] test 1
[0098] Effects of different back pressure ranges and production capacity of 40 kg per hour on cellooligosaccharides:
[0099] 1. Crush the wheat bran until it passes through an 80MESH sieve.
[0100] 2. After crushing, sieve the wheat bran with 100 MESH to remove the starch.
[0101] 3. Put the starch-removed wheat bran into the extruder feeder.
[0102] 4. The fixed temperature combination is set at 80, 95, 150, 150, 150°C from the first to the fifth sleeve.
[0103] 5. Carry out continuous extrusion steaming and explosion procedure:
[0104] The fixed parameters are feeding and water feeding at the same time, including 50% wheat bran and 50% moisture; the total production capacity is 40 kg per hour; the spindle speed of the extruder is 100rpm. Carry out the following continuous extrusion steam-explosion in different back pressure ranges to obtain steam-explosion products in different back pressure ranges:
[0105] (a) The first group ...
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Abstract
The present invention provides a method for producing cello-oligosaccharide, comprising: (a) providing a fiberraw material having a water content of 29-70%; (b) by using an extruder for continously maintaining the fiberraw material at a pressure range of 15-65kg / cm2 via back pressure, performing a steam explosion process on the fiberraw material to produce a steam explosion product, wherein the temperature of the extruder is about 70-1600 degree centigrade, wherein the back pressure of the extruder is continuously maintained in the pressure range so that the fiber raw material continues to undergo steam explosion as the fiber material continues to be pushed out of the outlet of the extruder; and (c) subjecting the steam explosion product to a degradation treatment to obtain a cello-oligosaccharide product. The method for producing the cello-oligosaccharide of the present invention can maintain the pressure within a constant range prior to the steam explosion of the fiber raw material having a high water content, thereby achieving an effect of stable discharge and being environmentally friendly and capable of improving the yield of oligosaccharides and reducing process cost.
Description
technical field [0001] The present invention relates to a method for producing cellooligosaccharides, and in particular to a method for producing cellooligosaccharides through an extrusion steam-explosion process. Background technique [0002] Using fibrous biomass raw materials, such as corncobs, cottonseed hulls, bagasse, wheat bran, etc. Enzyme treatment is used for pretreatment and saccharification treatment, and the other is pretreatment with high temperature and high pressure water or high temperature and high pressure steam explosion pretreatment before saccharification treatment. [0003] In recent years, due to the rising awareness of environmental protection, the pretreatment of high-temperature and high-pressure water or the method of high-temperature and high-pressure steam-explosion pretreatment has become a relatively popular research topic. However, due to the pretreatment of high-temperature and high-pressure water or the pre-treatment of high-temperature an...
Claims
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