CN107602729A - A kind of preparation method of low-temperature instant agar - Google Patents
A kind of preparation method of low-temperature instant agar Download PDFInfo
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- CN107602729A CN107602729A CN201710940459.3A CN201710940459A CN107602729A CN 107602729 A CN107602729 A CN 107602729A CN 201710940459 A CN201710940459 A CN 201710940459A CN 107602729 A CN107602729 A CN 107602729A
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Abstract
The invention discloses a kind of preparation method of low-temperature instant agar, the preparation method comprises the steps of：The heating of conventional agar is boiled to being completely dissolved；Add the degraded of hydrogen peroxide constant temperature；Add cellulase and carry out crystalline form enzymatic conversion method；Reacted solution adds alcohol in high concentration progress crystalline form and fixed；Filtering, frozen drying, crushing obtain low molecule amount low-temperature instant agar.The present invention carries out crystalline form enzymatic conversion method by cellulase makes the beta-crystalline form of plain agar be converted toward α, and then reduces the solution temperature of agar；50 55 DEG C of product solution temperature of the present invention, dissolution time 57 minutes, is mainly used in the products such as the quick-fried pearl of cigarette, Yoghourt, minute surface pectin.
Description
Technical field
The present invention relates to a kind of preparation method of agar, specifically a kind of preparation method of low-temperature instant agar.
Background technology
Agar also known as agar-agar, agar, agar or frozen glue are commonly called as, are the natural polysaccharide extracted in a kind of marine alga from red algae
Colloid.In addition to as coagulator, thickener, suspending agent, emulsifying agent, stabilizer, antistaling agent, adhesive, biology are also acted as
Culture medium and microbe carrier, applied in food, daily-use chemical industry, light industry, medicine and other fields.The high-melting-point of conventional agar, leads
It is caused to use 95 DEG C of high temperature above continuous heating 15-20 minutes in practical application, this turns into a big defect of its application, and
And muddiness is presented in solution.Opaque shape；High gelation causes its dispersiveness and poor diffusivity, extremely significantly limits it instantly
The application of Yoghourt, minute surface pectin and the quick-fried pearl of cigarette that heat chases after etc..This just expedites the emergence of out the birth of novel product-" low-temperature instant agar "
It is raw.
The most significant advantage of low-temperature instant agar is " low temperature, in short-term " dissolving, and 95 DEG C of heating 15- are wanted in the dissolving of plain agar
20 minutes, the solution temperature of the quickly dissolving agar having on the market at present was at 65-80 DEG C, dissolution time 8-15 minutes, to a certain degree
On improve the solubility property of agar.At present, the processing technology of quickly dissolving agar is mainly by following two modes：
1st, physically improved method-cosolvent：(patent name：The preparation method of quickly dissolving agar；The patent No.：
ZL20051011224.2)
Pretreatment：Cosolvent is dissolved in water standby
Agar → boil heating for dissolving → cryogenic freezing → chase filter-press dehydration → heat drying+spraying cosolvent → powder
Broken → quickly dissolving agar.
Wherein：Cosolvent is mainly sucrose or other polyols, and such a method method is mainly by adding cosolvent
Physical modified method, improve the solubility property of agar, the agar dissolution velocity of preparation：80 DEG C can complete for 15 minutes.
Also have below and further optimization and improved research are carried out to cosolvent and drying mode, cosolvent selection sucrose,
Glucose, dextrin etc.；Heating is using micro-wave drying etc.；But often there is the drawbacks of larger in this physical modification：On the one hand
Improved effect is not notable, and another importance is to introduce foreign substance.
2nd, chemical amendments-demethoxylation reaction (patent name：A kind of agar and preparation method thereof；The patent No.：
ZL201110066935.5)
Fragrant plant mentioned in ancient texts (raw material) → subtract by force → demethoxylation reagent → (70-90 DEG C) of heating reaction (1-3 hours) → plate compression
Filtering → freezing (5 DEG C 4 hours) → -20 DEG C of 24 hours → defrosting of freezing press dewatering → drying → crushing → low-temperature instant fine jades
Fat.
Wherein：Demethoxylation reagent is：Hydrogen peroxide and the mixture or polyglyceryl fatty acid ester and 95% of alcohol mixing
Crude alcohol mixture, the method by carrying out demethoxylation to agar, the methoxyl content in agar is effectively reduced, so as to reduce it
Setting temperature and melt temperature.Product solution temperature prepared by the technique is minimum i.e. solvable at 67 DEG C, significantly reduces agar
Fusion temperature.In addition, hydrogen peroxide has the function that bleaching, alcohol also have a deimpurity effect, thus product sensory in vain,
Transparent glue solution degree is high.But it is to be needed from extraction process through process cycles such as " heatings/freezing " that this technique, which prepares quickly dissolving agar,
Length is complex, and cost is of a relatively high.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of preparation method of low-temperature instant agar, cellulose is passed through
Enzyme carries out crystalline form enzymatic conversion method, greatly reduces the solution temperature and dissolution time of agar, extremely significantly improves answering for agar
Use advantage.
The present invention is achieved by the following technical solutions, including following benefit step：
(1) conventional agar is scattered in the aqueous solution, and heating is boiled until being completely dissolved；
(2) glue being completely dissolved is cooled within the scope of certain temperature, adds hydrogen peroxide and carry out constant temperature degraded
40-60min；
(3) after the completion of degrading, add cellulase and carry out crystalline form enzymatic conversion method, reaction time 15-20min；
(4) after the completion of above-mentioned reaction, the alcohol alcohol precipitation progress crystalline form that high concentration is added into above-mentioned solution is fixed；
(5) precipitation that filtering separates out；
(6) it is dried using hypothermic lyophilization technology；
(7) required mesh number is ground into as requested, and then obtains finished product low-temperature instant agar.
In step (1), the concentration that conventional agar is dispersed in water is 10-30% scope.
The certain temperature range that glue cools down in step (2) is 50-55 DEG C, and this temperature range is also the temperature of constant temperature degraded
Degree.
The dosage volume of hydrogen peroxide is the 10-30% with water volume in step (2).
The amount of the addition of step (3) cellulase is the 5-8% of agar amount.
The concentration range of alcohol is 80-95%vol in step (4).
The solution temperature of finished product low-temperature instant agar is 50-55 DEG C in step (7), dissolution time 5-7 minutes.
Advantages of the present invention：
(1) hydrogen peroxide oxidation degradation technique, the intensity of agar can be reduced, improves agar whiteness, improve point of agar
Dissipate property and toughness.The whiteness of agar brings up to 70-80 by the 40-50 of routine.
(2) crystalline form enzymatic conversion method, agar is handled using cellulase, the beta-crystalline form of plain agar is turned toward α
Change, and then reduce the solution temperature of agar；Can make the solution temperature of agar by routine >=95 DEG C be reduced to 50-55 DEG C, dissolving
Time foreshortens to 5-7 minutes by the 15-20 minutes of routine, saves freezing, dehydration, shortens production cycle and energy consumption, greatly
It is big to improve production efficiency and reduce production cost.
(3) alcohol alcohol precipitation crystalline form, which is fixed, refers to after the conversion of enzyme process crystalline form is completed, and the agar molecular structure of αization is passed through
It is fixed with the method for alcohol alcohol precipitation, this method processing can both improve the dispersiveness and rate of dissolution of low temperature agar, change again
It has been apt to the mobility of product, the performance of product is obtained lifting in all directions.
Specific embodiment
Embodiment 1
(1) 300g routine agar powders are weighed, heating is added in 1000ml water and boils to being completely dissolved；
(2) above-mentioned solution is cooled to 50 DEG C, adds 100ml hydrogen peroxide constant temperature degraded 40min；
(3) after the completion of degrading, 15g cellulases is added and carry out crystalline form enzymatic conversion method, react 15min；
(4) after reaction terminates, the alcohol alcohol precipitation progress crystalline form that 1000ml80% is added into solution is fixed；
(5) precipitation separated out using screen filtration；
(6) it is dried using hypothermic lyophilization technology；
(7) 200 mesh are ground into, obtain finished product low-temperature instant agar.
55 DEG C of the solution temperature of product, dissolution time 7min.
Embodiment 2
(1) 100g routine agar powders are weighed, heating is added in 1000ml water and boils to being completely dissolved；
(2) above-mentioned solution is cooled to 55 DEG C, adds 300ml hydrogen peroxide constant temperature degraded 60min；
(3) after the completion of degrading, 8g cellulases is added and carry out crystalline form enzymatic conversion method, react 20min；
(4) after reaction terminates, the alcohol alcohol precipitation progress crystalline form that 1000ml95% is added into solution is fixed；
(5) precipitation separated out using screen filtration；
(6) it is dried using hypothermic lyophilization technology；
(7) 200 mesh are ground into, obtain finished product low-temperature instant agar.
50 DEG C of the solution temperature of product, dissolution time 5min.
Embodiment 3
(1) 200g routine agar powders are weighed, heating is added in 1000ml water and boils to being completely dissolved；
(2) above-mentioned solution is cooled to 53 DEG C, adds 200ml hydrogen peroxide constant temperature degraded 50min；
(3) after the completion of degrading, 12g cellulases is added and carry out crystalline form enzymatic conversion method, react 16min；
(4) after reaction terminates, the alcohol alcohol precipitation progress crystalline form that 1000ml90% is added into solution is fixed；
(5) precipitation separated out using screen filtration；
(6) it is dried using hypothermic lyophilization technology；
(7) 150 mesh are ground into, obtain finished product low-temperature instant agar.
53 DEG C of the solution temperature of product, dissolution time 6min.
Embodiment 4
(1) 200g routine agar powders are weighed, heating is added in 1000ml water and boils to being completely dissolved；
(2) above-mentioned solution is cooled to 55 DEG C, adds 150ml hydrogen peroxide constant temperature degraded 55min；
(3) after the completion of degrading, 15g cellulases is added and carry out crystalline form enzymatic conversion method, react 20min；
(4) after reaction terminates, the alcohol alcohol precipitation progress crystalline form that 1000ml85% is added into solution is fixed；
(5) precipitation separated out using screen filtration；
(6) it is dried using hypothermic lyophilization technology；
(7) 80 mesh are ground into, obtain finished product low-temperature instant agar.
52 DEG C of the solution temperature of product, dissolution time 6min.
Claims (7)
1. a kind of preparation method of low-temperature instant agar, it is characterised in that comprise the steps of：
(1) conventional agar is scattered in the aqueous solution, and heating is boiled until being completely dissolved；
(2) glue being completely dissolved is cooled within the scope of certain temperature, adds hydrogen peroxide and carry out constant temperature degraded 40-
60min；
(3) after the completion of degrading, add cellulase and carry out crystalline form enzymatic conversion method, reaction time 15-20min；
(4) after the completion of above-mentioned reaction, the alcohol alcohol precipitation progress crystalline form that high concentration is added into above-mentioned solution is fixed；
(5) precipitation that filtering separates out；
(6) it is dried using hypothermic lyophilization technology；
(7) required mesh number is ground into as requested, and then obtains finished product low-temperature instant agar.
A kind of 2. preparation method of low-temperature instant agar according to claim 1, it is characterised in that in the step (1),
The concentration that conventional agar is dispersed in water is 10-30% scope.
3. the preparation method of a kind of low-temperature instant agar according to claim 1, it is characterised in that in the step (2)
The certain temperature range of glue cooling is 50-55 DEG C, and this temperature range is also the temperature of constant temperature degraded.
4. according to a kind of preparation method of low-temperature instant agar described in claim 1, it is characterised in that mistake in the step (2)
The dosage volume of hydrogen oxide is the 10-30% with water volume.
5. the preparation method of a kind of low-temperature instant agar according to claim 1, it is characterised in that in the step (3)
The amount of the addition of cellulase is the 5-8% of agar amount.
6. the preparation method of a kind of low-temperature instant agar according to claim 1, it is characterised in that in the step (4)
The concentration range of alcohol is 80-95%.
7. the preparation method of a kind of low-temperature instant agar according to claim 1, it is characterised in that in the step (7)
The solution temperature of finished product low-temperature instant agar is 50-55 DEG C, dissolution time 5-7 minutes.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108783405A (en) * | 2018-06-28 | 2018-11-13 | 福建省天源兴达食品有限公司 | A kind of preparation method of high-gel strength agar |
| CN108783404A (en) * | 2018-06-21 | 2018-11-13 | 福建省天源兴达食品有限公司 | A kind of preparation method of low-temperature instant agar |
| CN110407956A (en) * | 2019-08-09 | 2019-11-05 | 华南理工大学 | A kind of low-temperature instant agar and preparation method thereof |
| CN113121722A (en) * | 2021-04-12 | 2021-07-16 | 中国水产科学研究院南海水产研究所 | Preparation method and application of denatured agar |
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| EP0724886A4 (en) * | 1993-10-22 | 1996-11-06 | Tsumura & Co | Base for sustained-release preparation, sustained-release preparation, and process for producing the preparation |
| CN104829753A (en) * | 2015-05-08 | 2015-08-12 | 福建省绿麒食品胶体有限公司 | Preparation method of instant gracilaria agar with low freezing point |
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| CN106107924A (en) * | 2016-07-21 | 2016-11-16 | 石家庄市兄弟伊兰食品配料有限公司 | A kind of preparation method of low-temperature instant agar |
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| EP0598141A1 (en) * | 1992-11-17 | 1994-05-25 | Societe D'etude Et De D'exploitation D'algues Et Produits Maritimes ( Setexam) | Production process of quick soluble agar |
| EP0724886A4 (en) * | 1993-10-22 | 1996-11-06 | Tsumura & Co | Base for sustained-release preparation, sustained-release preparation, and process for producing the preparation |
| CN104829753A (en) * | 2015-05-08 | 2015-08-12 | 福建省绿麒食品胶体有限公司 | Preparation method of instant gracilaria agar with low freezing point |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108783404A (en) * | 2018-06-21 | 2018-11-13 | 福建省天源兴达食品有限公司 | A kind of preparation method of low-temperature instant agar |
| CN108783404B (en) * | 2018-06-21 | 2021-09-10 | 福建天源兴达生物科技有限公司 | Preparation method of low-temperature instant agar |
| CN108783405A (en) * | 2018-06-28 | 2018-11-13 | 福建省天源兴达食品有限公司 | A kind of preparation method of high-gel strength agar |
| CN108783405B (en) * | 2018-06-28 | 2021-09-10 | 福建天源兴达生物科技有限公司 | Preparation method of agar with high gel strength |
| CN110407956A (en) * | 2019-08-09 | 2019-11-05 | 华南理工大学 | A kind of low-temperature instant agar and preparation method thereof |
| CN113121722A (en) * | 2021-04-12 | 2021-07-16 | 中国水产科学研究院南海水产研究所 | Preparation method and application of denatured agar |
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| CN107602729B (en) | 2020-04-03 |
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