CN104987434A - Method for extracting inulin by medium-low-temperature water - Google Patents
Method for extracting inulin by medium-low-temperature water Download PDFInfo
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- CN104987434A CN104987434A CN201510415309.1A CN201510415309A CN104987434A CN 104987434 A CN104987434 A CN 104987434A CN 201510415309 A CN201510415309 A CN 201510415309A CN 104987434 A CN104987434 A CN 104987434A
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- inulin
- jerusalem artichoke
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Abstract
The invention discloses a method for extracting inulin by medium-low-temperature water. During raw material preprocessing, a color retention agent is added; extraction is carried out under the condition of medium-low-temperature water; the squeezing is carried out for many times by a belt type squeezing method; the occurrence of a Maillard reaction can be effectively inhibited; an active carbon decoloration process is not needed; the inulin loss in the inulin process is avoided; the yield of the inulin is improved; the production process is also simplified; the production cost is reduced. Compared with a spiral squeezing method, the belt type squeezing method has the advantages that the juice yield is improved; the operation is simple; the inulin extraction rate can reach higher than 95 percent; the color of the finally obtained inulin is pure; the purification is high; the energy consumption is reduced; the integral economic benefits are higher.
Description
Technical field
The present invention relates to plant component extraction technical field, is a kind of extracting method of inulin specifically.
Background technology
Inulin is the deposit polysaccharide extensively existed in plant, is the mixture of a class natural fruit glycan, polymerization degree 2-60.Inulin is widely distributed at occurring in nature, also containing inulin in some fungus and bacterium, but main source is plant, wherein jerusalem artichoke and witloof are due to abundance, inulin content is high, account for more than 70% of its stem tuber dry weight, most suitable as the raw material producing inulin, industrialized inulin sources is jerusalem artichoke and witloof mainly.
The production of external inulin is mainly raw material with witloof, and through hot water extraction, after removing protein and mineral substance, the step such as spray-dried obtains inulin.Domestic inulin produce main with jerusalem artichoke stem tuber for raw material, through hot water extraction, remove albumen, colloid, robust fibre and mineral substance, obtain inulin.The extraction process of current inulin mainly contains conventional hot water's lixiviate, countercurrent extraction, hot water screw press method etc.Hot water extraction adopts the hot water lixiviate repeatedly of more than 80 DEG C, and solid-to-liquid ratio is at more than 1:10, and energy consumption is high, complicated operation; Countercurrent extraction technology adopts the hot water extraction of more than 80 DEG C, solid-to-liquid ratio 1:2-4, although solve the high problem of energy consumption, extraction equipment is complicated, and cost is high, and production efficiency is not high; Hot water screw press method extractive technique solves the problem of extraction efficiency, but needs the hot water of more than 70 DEG C in leaching process, and screw press extraction yield can only reach 85%, needs activated carbon decolorizing technique simultaneously, can adsorb a part of inulin, causes inulin yield to decline.
Containing reducing sugar and amino acid in jerusalem artichoke and witloof stem tuber, in inulin leaching process, run into air, easily non-enzymatic browning and Maillard reaction occur.Maillard reaction can occur temperature 20 ~ 25 DEG C, generally often differs 10 DEG C, speed of response difference 3 ~ 5 times.Need to add large carbon content active to decolour, cause loss of inulin, affect yield.Existing inulin production technology process does not all suppress the measure of Maillard reaction.
Summary of the invention
In order to overcome the above problems, the present invention develops middle water at low temperature (30-50 DEG C) belt milling process and extracts inulin new technology, when raw material pre-treatment, add colour protecting agent, effectively inhibit the generation of Maillard reaction, do not need decolorizing with activated carbon process, effectively raise production efficiency and inulin yield; Adopt belt milling process solid-to-liquid ratio low, crushing juice rate is high, and reduce the energy consumption that inulin is produced, inulin extraction yield can reach more than 95%, the inulin pure color obtained, and purity >=90.0%, ash content≤0.25%, overall economic efficiency is higher.
Concrete technical scheme is as follows:
In use, water at low temperature extracts a method for inulin, comprises the following steps:
(1) silt and decortication are removed in jerusalem artichoke cleaning;
(2) jerusalem artichoke of clean decortication is added in crusher the colour protecting agent of 1-5 ‰ while fragmentation;
(3) slurries after fragmentation are added low temperature deionized water in no more than 3 times of weight, stir;
(4) the above-mentioned slurries mixed are delivered to belt press, collect jerusalem artichoke juice and jerusalem artichoke slag respectively;
(5) above-mentioned jerusalem artichoke slag is added low temperature deionized water in no more than 3 times of weight, stir, proceed belt squeezing, collect juice and jerusalem artichoke slag;
(6) merge (4) and (5) and obtain jerusalem artichoke juice, after vibratory screening apparatus initial filter, obtain total extracting solution;
(7) by total extracting solution successively through the removal of impurities of lime carbonating method, coarse filtration, essence filter after, first being concentrated into concentration by nanofiltration membrane is more than 20%, concentrated solution after ion-exchange desalination, enter double-effect evaporator concentrated further after, spraying dry obtains inulin.
In described step (2), colour protecting agent be NaHSO3, Na2SO3, xitix, saccharosonic acid, citric acid one or more;
In described step (3), (5), described middle water at low temperature is 30-50 DEG C of deionized water, and its add-on is no more than 3 times of jerusalem artichoke and jerusalem artichoke slag weight; Churning time is 10-30 minute.
In described step (4), the strainer tensioning air pressure of belt press is 0.5-0.8MPa.
Described lime carbonating method is: in total extracting solution, add food grade Ca (OH) 2, regulates pH value 10.0, stirs 30-40 minute, then passes into CO2 gas and make pH value reach till 7.0; After described nanofiltration membrane is concentrated, inulin concentration is 20%; Described ion-exchange desalination refers to extracting solution successively through strongly basic anion exchange resin, storng-acid cation exchange resin, weak base anion-exchange resin desalination bleaching; Inulin concentration 40-60% after double-effect evaporation is concentrated.
In described step (7), coarse filtration adopts filter press, and essence filter adopts whizzer to filter; The daltonian nanofiltration membrane of molecular weight cut-off 100-300 is adopted, for removing small molecular weight impurity and moisture when nanofiltration membrane concentrates.
Advantage of the present invention is:
Utilization adds colour protecting agent, effectively can suppress the generation of Maillard reaction, does not need to carry out activated carbon decolorizing technique, avoids loss of inulin, not only increase inulin yield, also simplify production technique, reduce production cost; Adopting belt milling process by repeatedly squeezing, improving inulin extraction yield, comparing screw press method, not only can operate under middle low temperature, and production efficiency and inulin yield higher.In inulin leaching process, there is reducing sugar and amino acid whose Maillard reaction, non-enzymatic browning occurs, temperature often raises 10 DEG C of speed of response increases 3-5 doubly, during the present invention adopts, the squeezing of water at low temperature belt is extracted, and can prevent the generation of Maillard reaction further, not adopt decoloration process, the inulin pure color finally obtained, purity is high, the more important thing is, improves yield, reduce energy consumption, overall economic efficiency is higher.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1
After the decortication of fresh for 100kg jerusalem artichoke cleaning silt, enter crusher in crushing, add the NaHSO3 solution of 1 ‰ concentration while broken, the slurries after fragmentation enter stirred pot, add 300kg30 DEG C of deionized water, stir 30min.The strainer tensioning air pressure of belt press is set as 0.8MPa, the slurries be stirred is delivered to belt filter press and squeezes, obtain 360kg jerusalem artichoke juice and 40kg jerusalem artichoke slag.Added in stirring tank by jerusalem artichoke slag, then add the deionized water and stirring 30min of 30 DEG C of 80kg, press filtration obtains 80kg juice and 40kg jerusalem artichoke slag.Merge the jerusalem artichoke juice 440kg that twice squeezing obtains, be warming up to 80 DEG C, adding food grade Ca (OH) 2 to pH value is 10.0, stir after 30 minutes, passing into CO2 gas makes pH value reach 7.0, fluid temperature is down to less than 40 DEG C, after Plate Filtration, again through the filter of whizzer essence, it is about 20% that filtrate is concentrated into inulin concentration through 300 dalton's nanofiltration membrane, concentrated solution is through strong basic ion exchange resin, after highly acidic cation and the desalination of weak anion resin exchange column, enter dual-effect concentrator, being concentrated into inulin concentration is about 40%, carry out spraying dry, obtain white inulin powder 9.1kg, purity 91.2%, ash content 0.2%.
Embodiment 2
After the decortication of fresh for 100kg witloof cleaning silt, enter crusher in crushing, add NaHSO3 and the citric acid solution of 2 ‰ concentration while broken, the slurries after fragmentation enter stirred pot, add 250kg 40 DEG C of deionized waters, stir 20min.The strainer tensioning air pressure of belt press is set as 0.6MPa, the slurries be stirred is delivered to belt filter press and squeezes, obtain 325kg juice and 35kg jerusalem artichoke slag.Added in stirring tank by witloof slag, then add the deionized water and stirring 30min of 40 DEG C of 70kg, press filtration obtains 70kg juice and 35kg witloof slag.Merge the witloof juice 395kg that twice squeezing obtains, be warming up to 80 DEG C, adding food grade Ca (OH) 2 to pH value is 10.0, stir after 30 minutes, passing into CO2 gas makes pH value reach 7.0, fluid temperature is down to less than 40 DEG C, after Plate Filtration, again through the filter of whizzer essence, it is about 20% that filtrate is concentrated into inulin concentration through 200 dalton's nanofiltration membrane, concentrated solution is through strong basic ion exchange resin, after highly acidic cation and the desalination of weak anion resin exchange column, enter dual-effect concentrator, being concentrated into inulin concentration is about 50%, carry out spraying dry, obtain white inulin powder 10.2kg, purity 92.6%, ash content 0.23%.
Embodiment 3
After the decortication of fresh for 100kg jerusalem artichoke cleaning silt, enter crusher in crushing, add Na2SO3 and the ascorbic acid solution of 3 ‰ concentration while broken, the slurries after fragmentation enter stirred pot, add 200kg 50 DEG C of deionized waters, stir 10min.The strainer tensioning air pressure of belt press is set as 0.5MPa, the slurries be stirred is delivered to belt filter press and squeezes, obtain 270kg jerusalem artichoke juice and 30kg jerusalem artichoke slag.Added in stirring tank by jerusalem artichoke slag, then add the deionized water and stirring 20min of 50 DEG C of 60kg, press filtration obtains 60kg juice and 30kg jerusalem artichoke slag.Merge the jerusalem artichoke juice 330kg that twice squeezing obtains, be warming up to 80 DEG C, adding food grade Ca (OH) 2 to pH value is 10.0, stir after 30 minutes, passing into CO2 gas makes pH value reach 7.0, fluid temperature is down to less than 40 DEG C, after Plate Filtration, again through the filter of whizzer essence, it is about 20% that filtrate is concentrated into inulin concentration through 100 dalton's nanofiltration membrane, concentrated solution is through strong basic ion exchange resin, after highly acidic cation and the desalination of weak anion resin exchange column, enter dual-effect concentrator, being concentrated into inulin concentration is about 45%, carry out spraying dry, obtain white inulin powder 11.6kg, purity 90.2%, ash content 0.25%.
Colour protecting agent in embodiment 1-3 can also adopt, Na2SO3, xitix, saccharosonic acid, citric acid one or more.
Above-described embodiment 1-3 is only exemplary embodiments of the present invention, and those skilled in the art technical scheme according to the present invention can make simple adjustment completely, but identical with flesh and blood of the present invention, therefore fall into equally within protection scope of the present invention.
The present invention adds colour protecting agent when raw materials pretreatment, effectively can suppress the generation of Maillard reaction, does not need to carry out activated carbon decolorizing technique, avoid the loss of inulin in decolorization, improve the yield of inulin, also simplify production technique, reduce production cost; Compare screw press method, adopting belt milling process by repeatedly squeezing, not only can operate under middle low temperature, improve crushing juice rate simultaneously, production efficiency and inulin yield higher.In inulin leaching process, there is reducing sugar and amino acid whose Maillard reaction, non-enzymatic browning occurs, temperature often raises 10 DEG C of speed of response increases 3-5 doubly, during the present invention adopts, the squeezing of water at low temperature belt is extracted, and can prevent the generation of Maillard reaction further, even if do not adopt decoloration process, the inulin pure color finally obtained, purity is high, the more important thing is, improves yield, reduce energy consumption, overall economic efficiency is higher.
The present invention adopts the removal of impurities of lime carbonating method, can not only absorbed portion impurity, and can remove look further; Filtration procedure adopts coarse filtration to filter with essence and combines, and filters more thorough, simple to operate, better effects if.
Therefore, the present invention will add water at low temperature squeezing extraction and the removal of impurities of lime carbonating method, coarse filtration and smart filter in colour protecting agent, employing and organically combine, to ensure not need to carry out decoloration process, not only reduce energy consumption, improve yield, and, the inulin pure color finally obtained, purity >=90.0%, ash content≤0.25%.
Claims (4)
1. extract a method for inulin by middle water at low temperature, it is characterized in that comprising the following steps:
(1) silt and decortication are removed in jerusalem artichoke cleaning;
(2) jerusalem artichoke of clean decortication is added in crusher the colour protecting agent of 1-5 ‰ while fragmentation;
(3) slurries after fragmentation are added low temperature deionized water in no more than 3 times of weight, stir;
(4) the above-mentioned slurries mixed are delivered to belt press, collect jerusalem artichoke juice and jerusalem artichoke slag respectively;
(5) above-mentioned jerusalem artichoke slag is added low temperature deionized water in no more than 3 times of weight, stir, proceed belt squeezing, collect juice and jerusalem artichoke slag;
(6) merge (4) and (5) and obtain jerusalem artichoke juice, after vibratory screening apparatus initial filter, obtain total extracting solution;
(7) by total extracting solution successively through the removal of impurities of lime carbonating method, coarse filtration, essence filter after, first being concentrated into concentration by nanofiltration membrane is more than 20%, concentrated solution after ion-exchange desalination, enter double-effect evaporator concentrated further after, spraying dry obtains inulin.
In described step (2), colour protecting agent be NaHSO3, Na2SO3, xitix, saccharosonic acid, citric acid one or more;
In described step (3), (5), described middle water at low temperature is 30-50 DEG C of deionized water, and its add-on is no more than 3 times of jerusalem artichoke and jerusalem artichoke slag weight; Churning time is 10-30 minute.
2. in use according to claim 1, water at low temperature extracts the method for inulin, it is characterized in that:
In described step (4), the strainer tensioning air pressure of belt press is 0.5-0.8MPa.
3. in use according to claim 1, water at low temperature extracts the method for inulin, it is characterized in that: described lime carbonating method is: in total extracting solution, add food grade Ca (OH) 2, regulate pH value 10.0, stir 30-40 minute, then pass into CO2 gas and make pH value reach till 7.0; After described nanofiltration membrane is concentrated, inulin concentration is 20%; Described ion-exchange desalination refers to extracting solution successively through strongly basic anion exchange resin, storng-acid cation exchange resin, weak base anion-exchange resin desalination; After double-effect evaporation is concentrated, inulin concentration is 40-60%.
4. in use according to claim 1, water at low temperature extracts the method for inulin, it is characterized in that: in described step (7), and coarse filtration adopts filter press, and essence filter adopts whizzer to filter; The daltonian nanofiltration membrane of molecular weight cut-off 100-300 is adopted, for removing small molecular weight impurity and moisture when nanofiltration membrane concentrates.
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Cited By (4)
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| CN105384851A (en) * | 2015-11-10 | 2016-03-09 | 军株（大连）生物产业有限公司 | Extraction method for producing inulin by cichorium intybus |
| CN106589155A (en) * | 2016-12-15 | 2017-04-26 | 滨州医学院 | Preparation method and application of water-soluble polysaccharides derived from hemicentrotus pulcherrimus germen |
| CN109336997A (en) * | 2018-09-28 | 2019-02-15 | 晨光生物科技集团股份有限公司 | A kind of method that low temperature extracts inulin in jerusalem artichoke |
| CN107602731B (en) * | 2017-10-09 | 2019-12-20 | 晨光生物科技集团股份有限公司 | Industrial production method for extracting inulin from jerusalem artichoke |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384851A (en) * | 2015-11-10 | 2016-03-09 | 军株（大连）生物产业有限公司 | Extraction method for producing inulin by cichorium intybus |
| CN106589155A (en) * | 2016-12-15 | 2017-04-26 | 滨州医学院 | Preparation method and application of water-soluble polysaccharides derived from hemicentrotus pulcherrimus germen |
| CN107602731B (en) * | 2017-10-09 | 2019-12-20 | 晨光生物科技集团股份有限公司 | Industrial production method for extracting inulin from jerusalem artichoke |
| CN109336997A (en) * | 2018-09-28 | 2019-02-15 | 晨光生物科技集团股份有限公司 | A kind of method that low temperature extracts inulin in jerusalem artichoke |
| CN109336997B (en) * | 2018-09-28 | 2021-04-27 | 晨光生物科技集团股份有限公司 | Method for extracting inulin from jerusalem artichoke at low temperature |
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Application publication date: 20151021 Assignee: Shandong Light Energy Biotechnology Co.,Ltd. Assignor: YANTAI INSTITUTE OF COASTAL ZONE RESEARCH, CHINESE ACADEMY OF SCIENCES Contract record no.: X2021210000022 Denomination of invention: A method of extracting inulin with medium low temperature water Granted publication date: 20171003 License type: Common License Record date: 20210517 |
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