CN1442441A - Preparation method of gelatin - Google Patents
Preparation method of gelatin Download PDFInfo
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- CN1442441A CN1442441A CN 02104329 CN02104329A CN1442441A CN 1442441 A CN1442441 A CN 1442441A CN 02104329 CN02104329 CN 02104329 CN 02104329 A CN02104329 A CN 02104329A CN 1442441 A CN1442441 A CN 1442441A
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Abstract
A process for preparing gelatin features use of membrane technology and includes such steps as regulating the pH value of extracted gelatin solution to 5.5-6.5 in the condition of sealing system, and the gelatin solution flowing through a combined membrane unit for filtering, concentrating, and removing bacteria at 50-60 deg.C. The resultant gelatin features high viscosity and coagulating and freezing strength, and low cost.
Description
Technical field
The invention belongs to field of gelatin preparation, particularly application of membrane is prepared the method for gelatin in the filtration sterilization of gelatin, concentration technology.
Background technology
Gelatin is the skin that comes from animal, the natural protein that bone extracts after treatment.Its good physico-chemical property is widely used in science, biomaterial and industrial technology field.Gelatin is a thermo-sensitivity protein, and in its production technique, filtration, evaporation concentration, sterilization are the important process of manufacturing of gelatin, and the quality of its processing condition is very big to the physico-chemical property influence of gelatin.In traditional production technique, the concentrating of gelatin solution, filtration, sterilization etc. still adopt cottonseed cake formula sheet frame, diatomite to filter so far.Under 80 ℃ of temperature, gelatin solution is concentrated into about 25wt% by concentration 5～8wt%, needs a large amount of steam; Adopt simultaneously superheated vapour in process for sterilizing, 140 ℃ of temperature sterilizations, this causes in various degree thermal destruction to the viscosity of gelatin and the intensity of congealing undoubtedly, and needs to consume a large amount of energy.Thereby gelatin technologist strive for improvement Technology and equipment, prevent and reduce destruction the gelatin physicochemical property.
Traditional manufacturing of gelatin technical process:
Raw material (bone) → degreasing → pickling → liming → washing neutralization → extracting → filtration → diatomite filtration → ion-exchange → evaporation concentration → sterilization → drying → pulverizing → packing
Membrane technique is the new high-tech industry that grows up over nearly 30 years, along with the suitability for industrialized production of film full scale plant, makes it obtain using widely in scientific research and each industrial circle.Write " membrane separation technique basis " 1989 as Gao Yiju, Ye Lingbi, Liu Moe etc. " membrane filtration technique application manual " calendar year 2001 is described, membrane technique and device thereof are mainly used in sea water desaltination, water treatment, the fields such as purifying of medical treatment and medicine preparation in foodstuffs industry and the medicine industry, its characteristics: 1. membrane separation technique undergoing phase transition not, energy consumption is low; 2. membrane separation technique is to carry out under normal temps or the low temperature, be specially adapted to heat-sensitive substance separation, classification, concentrate etc.; 3. its separating ranges is extensive, is not only applicable to organism, inorganics, and is applied in separating of virus, bacterium and particulate; 4. simple, the processing ease of film device, easy to control and maintenance etc.Because the above-mentioned advantage of film, it is applied in a lot of fields gradually.
Summary of the invention
The objective of the invention is to adopt the membrane process technology, different membrane treatment process is made up, replace that traditional filtration, high temperature evaporation concentrate, high-temperature sterilizing process and a kind of gelatin preparation method is provided.
Manufacturing of gelatin technology of the present invention is:
(concentration 5～8wt%) → filtration → micro-filtrate membrane filtration → ion-exchange → micro-filtrate membrane filtration → ultra-filtration membrane concentrates → concentrated (45～50 ℃) → drying → pulverizing → packing of low-temperature evaporation raw material (bone) → degreasing → pickling → liming → washing neutralization → extracting
The present invention is that the membrane process technology with the advanced person is applied to gelatin and concentrates in the degerming technology, replaces traditional diatomite filtration process, high temperature evaporation concentration technology and high-temperature sterilizing process.Under the system lock condition, the concentration that extracting is gone out is that the pH that the gelatin solution of 5～8wt% is adjusted solution with acid or alkali is 5.5～6.5, it is 50～60 ℃ in temperature then, preferred 52～55 ℃, gelatin solution is carried out filter at low temperature, concentrated, degerming by the combined films device, obtain spissated gelatin solution.The concentration of spissated gelatin solution can reach 25wt%.
The membrane process technology that the present invention uses is meant microfiltration membrane process, ultra-filtration membrane technology or reverse osmosis membrane technology; Described film is meant rolled film, flat sheet membrane or hollow-fibre membrane, and microfiltration membrane is meant aperture 10 μ m～0.2 μ m, is preferably 0.45 μ m; Ultra-filtration membrane is meant that molecular weight cut-off is 5000～100000MW, is preferably 5000～10000MW; Above-mentioned used film device is microfiltration membrane device, ultra-filtration membrane device or reverse osmosis membrane apparatus, and they can use separately or be used in combination, and decides according to the production purpose.By the gelatin that above-mentioned explained hereafter goes out, its bacteria content is not for detecting.And rare glue can be concentrated into about 25wt%.
The pH value of gelatin solution of the present invention, usable acid or alkali are regulated.As acid is phosphoric acid, hydrochloric acid, acetate, sulfuric acid or other organic acid etc.; Alkali is sodium hydroxide, potassium hydroxide, ammonium hydroxide or trolamine etc.
Method of the present invention is capable of reducing energy consumption, reduces and pollutes, and comprehensive cost is low, can produce the high quality gelatin of physical and chemical performance excellence.
Method of the present invention is compared with traditional technology has following advantage:
1, adopt the membrane process device, only need carry out at a lower temperature, save a large amount of energy, thereby the protection environment is simple to operate, reduces production costs.
2, adopt microfiltration membrane and ultra-filtration membrane technology to remove and degerm, replaced high-temperature sterilization and high temperature evaporation concentration technology, further reduce and prevented that bacterium or high temperature are to the viscosity of gelatin, the destruction of the intensity of congealing.
3, adopt membrane separation process, a large amount of impurity (salt, insolubles, noncollagen protein, mechanical impurity etc.) filtering can have been improved the gelatin solution transparency, reduced ash.
4, adopt membrane sepn to concentrate technology and replace high temperature evaporation and concentrate, can produce dissimilar viscosity according to different requirements, the gelatin of the intensity of congealing.
5, reduce the yield of low value gelatin.
Embodiment
Embodiment 1.
Under the system lock condition; it is that the pH value that the gelatin solution of 5～8wt% is adjusted solution with phosphoric acid or sodium hydroxide is 5.5～6.5 that extracting is gone out concentration; make temperature maintenance at 52～55 ℃ by heat exchanger; squeeze into pump and to have protector; membrane pore size is to filter in the micro-strainer of 0.45 μ m; its transparency increases substantially, and bacterium and foreign matter content reduce.
Embodiment 2.
Under the system lock condition, with the gelatin solution after embodiment 1 filtration, in temperature is under 52～55 ℃, with impeller pump squeeze into molecular weight cut-off be circulate in 10,000 the rolled film ultra-fine filter concentrated, reach 15～20wt% until gelatin solution concentration and promptly finish concentratedly, simultaneously the salt in the gelatin solution reduces.
Embodiment 3.
Under the system lock condition, it is that the pH value that the gelatin solution of 5～8wt% is adjusted solution with phosphoric acid or ammonium hydroxide is 5.5～6.5 that extracting is gone out concentration, make temperature maintenance at 50～60 ℃ by heat exchanger, squeeze into pump and to have protector, membrane pore size is to filter in the micro-strainer of 0.45 μ m; After the filtration, filtrate pumps into to be circulated concentratedly in the ultra-fine filter that molecular weight cut-off is 5000MW, after concentration reaches 15～20wt%, concentrated solution is pumped in the micro-strainer of 0.2 μ m and handle once more, to reach the purpose of degerming, the Bacteria Detection content of filter back concentrated solution is zero.
Embodiment 4.
The liquid pump that sees through of example 2 or example 3 is gone into reverse osmosis unit and handled, to squeeze into pump that to have the aperture be 20 through liquid, molecular weight cut-off is to filter in the strainer of 500MW reverse osmosis membrane, and small molecular protein is reclaimed, and sees through liquid (water) and is back in the production technique.
Claims (10)
1. the preparation method of a gelatin, adopt diatomite filtration technology, high temperature evaporation concentration technology and high-temperature sterilizing process in the membrane process technology replacement traditional preparation process gelatin technology, it is characterized in that: under the system lock condition, the concentration that extracting is gone out is that the pH that the gelatin solution of 5～8wt% is adjusted solution with acid or alkali is 5.5～6.5, it is 50～60 ℃ in temperature then, gelatin solution is carried out filter at low temperature, concentrated, degerming by the combined films device, obtain spissated gelatin solution.
2. the method for claim 1, it is characterized in that: described temperature is 52～55 ℃.
3. the method for claim 1, it is characterized in that: described film is meant rolled film, flat sheet membrane or hollow-fibre membrane.
4. the method for claim 1, it is characterized in that: described film device is microfiltration membrane device, ultra-filtration membrane device or reverse osmosis membrane apparatus.
5. method as claimed in claim 4 is characterized in that: the aperture of described microfiltration membrane is 10 μ m～0.2 μ m.
6. method as claimed in claim 5 is characterized in that: the aperture of described microfiltration membrane is 0.45 μ m.
7. method as claimed in claim 4 is characterized in that: described ultra-filtration membrane is meant that molecular weight cut-off is 5000～100000MW.
8. method as claimed in claim 7 is characterized in that: described ultra-filtration membrane is meant that molecular weight cut-off is 5000～10000MW.
9. method as claimed in claim 4 is characterized in that: described microfiltration membrane device, ultra-filtration membrane device or reverse osmosis membrane apparatus are to be used alone or in combination.
10. the method for claim 1, it is characterized in that: described acid is phosphoric acid, hydrochloric acid, acetate or sulfuric acid; Described alkali is sodium hydroxide, potassium hydroxide, ammonium hydroxide or trolamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02104329 CN1442441A (en) | 2002-03-01 | 2002-03-01 | Preparation method of gelatin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02104329 CN1442441A (en) | 2002-03-01 | 2002-03-01 | Preparation method of gelatin |
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| CN1442441A true CN1442441A (en) | 2003-09-17 |
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| CN 02104329 Pending CN1442441A (en) | 2002-03-01 | 2002-03-01 | Preparation method of gelatin |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103087638A (en) * | 2011-11-01 | 2013-05-08 | 王成城 | Low-freezing-point low-freezing-strength gelatin and preparation method thereof |
| CN105295739A (en) * | 2015-08-18 | 2016-02-03 | 安徽丰原发酵技术工程研究有限公司 | Method for extracting gelatin from waste capsule shells |
| CN108187497A (en) * | 2017-12-27 | 2018-06-22 | 成都经典明胶有限公司 | A kind of film method for concentration of edible gelatin |
| WO2023191018A1 (en) * | 2022-03-30 | 2023-10-05 | 東レ株式会社 | Method for producing gelatin or concentrated gelatin solution |
-
2002
- 2002-03-01 CN CN 02104329 patent/CN1442441A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103087638A (en) * | 2011-11-01 | 2013-05-08 | 王成城 | Low-freezing-point low-freezing-strength gelatin and preparation method thereof |
| CN103087638B (en) * | 2011-11-01 | 2014-12-31 | 王成城 | Low-freezing-point low-freezing-strength gelatin and preparation method thereof |
| CN105295739A (en) * | 2015-08-18 | 2016-02-03 | 安徽丰原发酵技术工程研究有限公司 | Method for extracting gelatin from waste capsule shells |
| CN105295739B (en) * | 2015-08-18 | 2018-01-23 | 安徽丰原发酵技术工程研究有限公司 | A kind of method for extracting gelatin using discarded capsule shells |
| CN108187497A (en) * | 2017-12-27 | 2018-06-22 | 成都经典明胶有限公司 | A kind of film method for concentration of edible gelatin |
| WO2023191018A1 (en) * | 2022-03-30 | 2023-10-05 | 東レ株式会社 | Method for producing gelatin or concentrated gelatin solution |
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