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A method for extracting inulin with medium and low temperature water

A technology of warm water and inulin, applied in the field of plant component extraction, can solve the problems of affecting the yield, loss of inulin, no inhibition, etc., and achieve the effects of simplifying the production process, high yield of inulin, and preventing Maillard reaction

Active Publication Date: 2017-10-03
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of activated carbon needs to be added for decolorization, resulting in the loss of inulin and affecting the yield
The existing inulin production technology has no measures to inhibit the Maillard reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] After cleaning and peeling 100kg of fresh Jerusalem artichoke, enter the crusher for crushing, add 1‰ concentration of NaHSO3 solution at the same time, the crushed slurry enters the mixing tank, add 300kg of 30 ℃ deionized water, and stir for 30min. The filter belt tensioning air pressure of the belt press is set to 0.8MPa, and the stirred slurry is transported to the belt filter press for pressing to obtain 360kg of Jerusalem artichoke juice and 40kg of Jerusalem artichoke residue. Add the Jerusalem artichoke dregs into the stirring tank, then add 80 kg of deionized water at 30° C., stir for 30 min, press filter to obtain 80 kg of juice and 40 kg of the Jerusalem artichoke dregs. Combine 440kg of the Jerusalem artichoke juice obtained by squeezing twice, heat up to 80°C, add food-grade Ca(OH)2 until the pH value is 10.0, stir for 30 minutes, pass CO2 gas to make the pH value reach 7.0, and lower the liquid temperature to 40 Below ℃, after plate and frame filtration, f...

Embodiment 2

[0026] After cleaning and peeling 100kg of fresh chicory, enter the crusher for crushing, add 2‰ concentration of NaHSO3 and citric acid solution at the same time, the crushed slurry enters the mixing tank, add 250kg of 40 ℃ deionized water, and stir for 20min. The filter belt tensioning air pressure of the belt press was set to 0.6 MPa, and the stirred slurry was transported to the belt filter press for pressing to obtain 325 kg of juice and 35 kg of Jerusalem artichoke residue. Add chicory dregs into the stirring tank, then add 70 kg of deionized water at 40°C and stir for 30 min, press filter to obtain 70 kg of juice and 35 kg of chicory dregs. Combine 395kg of chicory juice obtained by squeezing twice, heat up to 80°C, add food-grade Ca(OH)2 until the pH value is 10.0, stir for 30 minutes, feed CO2 gas to make the pH value reach 7.0, and reduce the liquid temperature to 40 Below ℃, after plate and frame filtration, fine filtration by centrifuge, the filtrate is concentrate...

Embodiment 3

[0028] After cleaning and peeling 100kg of fresh Jerusalem artichoke, enter the crusher for crushing, add 3‰ concentration of Na2SO3 and ascorbic acid solution at the same time, the crushed slurry enters the mixing tank, add 200kg of 50 ℃ deionized water, and stir for 10min. The filter belt tensioning air pressure of the belt press is set to 0.5 MPa, and the stirred slurry is transported to the belt filter press for pressing to obtain 270 kg of Jerusalem artichoke juice and 30 kg of Jerusalem artichoke residue. Add the Jerusalem artichoke dregs into the stirring tank, then add 60 kg of deionized water at 50° C., stir for 20 min, press filter to obtain 60 kg of juice and 30 kg of the Jerusalem artichoke dregs. Combine 330kg of the Jerusalem artichoke juice obtained by squeezing twice, heat up to 80°C, add food-grade Ca(OH)2 until the pH value is 10.0, stir for 30 minutes, pass CO2 gas to make the pH value reach 7.0, and lower the liquid temperature to 40 Below ℃, after plate an...

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Abstract

The invention discloses a method for extracting inulin with medium and low temperature water. A color-protecting agent is added during raw material pretreatment, extracted under medium and low temperature water conditions, and pressed multiple times by a belt pressing method, which can effectively inhibit the Maillard reaction. Occurs, does not need to carry out the activated carbon decolorization process, avoids the loss of inulin in the decolorization process, improves the yield of inulin, also simplifies the production process, and reduces the production cost. Compared with the screw pressing method, the belt pressing method improves the juice yield and is easy to operate. The inulin extraction rate can reach more than 95%. The final inulin obtained has pure color and high purity, reduces energy consumption, and has high comprehensive economic benefits.

Description

technical field [0001] The invention relates to the technical field of extracting plant components, in particular to a method for extracting inulin. Background technique [0002] Inulin is a reserve polysaccharide that widely exists in plants. It is a mixture of natural fructans with a degree of polymerization of 2-60. Inulin is widely distributed in nature, and some fungi and bacteria also contain inulin, but the main source is plants. Among them, Jerusalem artichoke and chicory have high inulin content due to their rich sources, accounting for more than 70% of the dry weight of their tubers. Suitable as a raw material for the production of inulin, the main sources of industrial inulin are Jerusalem artichoke and chicory. [0003] The production of inulin in foreign countries mainly uses chicory as raw material, which is extracted by hot water, removes protein and minerals, and then is spray-dried to obtain inulin. Domestic inulin production mainly uses Jerusalem artichok...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/18
Inventor 衣悦涛史雪洁
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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