CN1283160C - Ceramic membrane sterilization method for cow milk - Google Patents
Ceramic membrane sterilization method for cow milk Download PDFInfo
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- CN1283160C CN1283160C CN 200310100351 CN200310100351A CN1283160C CN 1283160 C CN1283160 C CN 1283160C CN 200310100351 CN200310100351 CN 200310100351 CN 200310100351 A CN200310100351 A CN 200310100351A CN 1283160 C CN1283160 C CN 1283160C
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- ceramic membrane
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Abstract
The present invention discloses a ceramic membrane sterilization method for cow milk systems, which comprises the following steps: a plurality of groups of micro-filtration separation units are formed by ceramic membranes; a bacteria containing cow milk system is pressurized to directly enter the micro-filtration separation units, and required milk products are obtained. The present invention has the advantages of low cost, less loss of nutritional ingredients with the sterilization at a normal temperature, high sterilization ratio, increased product quality and long service life with the adoption of the ceramic membranes.
Description
Technical field
The present invention relates to a kind of sterilizing methods of cow's milk system, relate in particular to a kind of sterilizing methods of ceramic membrane of cow's milk system.
Background technology
At present, the sterilizing methods of cow's milk system has traditional Pasteur's method, heat treatment methods such as superelevation warm therapy, modern cold treatment methods such as high concentration carbon dioxide method, centrifugal process, supercritical ultrasonics technology, high-pressure process and micro-filtration membrane partition method.
Wherein, the cow's milk system as cow's milk systems such as former milk, defatted milks, exists many bacteriums and enzyme bacterium under the normality, comprise pseudomonas, Colibacter, aflatoxin etc.Country is divided into level Four by total plate count, I level :≤50 * 10 to the former milk quality of cow's milk
4/ ml; II level :≤100 * 10
4/ ml; III level :≤200 * 10
4/ ml; IV level :≤400 * 10
4/ ml.Country is to dairy products, and such as pasteurize milk, its microbial standard (GB5408 1-1999) is total plate count :≤30000/ml, coliform count: 90MPN/100ml, aflatoxin: 0.5M1, μ g/kg, the bacterium of curing the disease: do not have.
Traditional pasteurize, be up to state standards, requiring former milk quality is I, II level, though, pasteurizing temperature is not high, generally at 60-70 ℃, the proteinaceous nutrient extent of damage in the cow's milk system is little, but because the sterilization temperature sterilizing time is shorter, contain in the cow's milk system of a large amount of bacteriums, there are a considerable amount of thermoduric bacterias to kill, cause the pasteurize milk storage life short, and need shortcoming in preservation below-4 ℃.And to the III level, IV level cow's milk must adopt＞100 ℃ high temperature, as the sterilization of superhigh temperature UHT method, make the bent breast that goes out, but nutritional labeling destruction is serious, and its nutritive value is lower.
Most cold treatment method cost height be difficult to heavy industrialization, and the relatively low micro-filtration membrane separation method of cost is difficult to the heavy industrialization application in practice.
Summary of the invention
The sterilizing methods that the purpose of this invention is to provide a kind of cow's milk system especially provides a kind of sterilizing methods of ceramic membrane of cow's milk system, has overcome the shortcoming of the sterilizing methods of above-mentioned cow's milk system.
Purpose of the present invention is based on following film separation principle: according to the difference of each component molecular weight size in the fluid-mixing to be separated, select a kind of membrane material, by pressurization, blending ingredients is separated, reach the separation purpose, described film is separated into micro-filtration membrane to be separated, and the mocromembrane pore diameter range can be 0.1-10 μ m.
A kind of sterilizing methods of ceramic membrane of cow's milk system may further comprise the steps:
Some groups of micro-filtration separative elements that adopt ceramic membrane to form;
To contain the pressurization of bacterium cow's milk system and directly enter described micro-filtration separative element;
Described micro-filtration separative element can be the 1-6 group, especially is 4 groups; Described ceramic membrane is a filter membrane, has fenestra, and this membrane aperture is 0.1-10 μ m, especially is 1.4 μ m;
Described cow's milk system is former breast, skimmed milk; The circulation of described cow's milk system in ceramic membrane unit can be 1-2000l/m
2Hr especially is 160l/m
2Hr; Described cow's milk system PH 〉=6 especially are PH=8;
The pressure of described pressurization is 0.10-0.50MPa, especially is 0.40MPa;
Described ceramic membrane composition comprises alundum (Al, zirconia, titanium dioxide, especially be following weight portion ratio component: alundum (Al, zirconia, titanium dioxide are (1-4): (1-4): (1-4), be preferably following weight portion ratio component: alundum (Al, zirconia, titanium dioxide 3: 3: 3.
Described ceramic membrane applies the oxidation activity layer, as the titanium oxide active layer, forms the mixture of aluminium, titanium and Zirconium oxide, and this ceramic membrane has the following advantages: gained cow's milk system sterilizing rate height; Service life is longer than polymer film and metal film; There is decay resistance strong; The environment that adapts to PH0-14; High-temperature resistant can reach 150 ℃; The highest burst pressure surpasses 90 crust; Compare with traditional filter, its required manpower is less; The effect of pasteurize and high temperature sterilization can be combined.
The present invention has the following advantages:
1, can be easily with cow's milk system liquid separated into two parts: product and contain a large amount of microorganisms and trapped substance that suspended solid, macromolecular complex are formed.
2, system stability, investment and operating cost are low, and the ceramic membrane life-span is long.
3, sterilization rate height, normal temperature is sterilization down, and the nutritional labeling loss is few, has improved product quality.
Description of drawings
Fig. 1 is the structural representation of ceramic membrane micro-filtration separative element
The specific embodiment
Embodiment 1
A kind of sterilizing methods of ceramic membrane of cow's milk system may further comprise the steps:
As shown in Figure 1: adopt weight portion ratio component: alundum (Al, zirconia, 3: 3: 3 ceramic membrane of titanium dioxide 1,4 groups of micro-filtration separative elements of composition, membrane aperture 2 is 1.4 μ m;
Described cow's milk system is a defatted milk stoste, total number of bacteria: 570,000/ml, and Escherichia coli 24000MPN/100ml, mould: 16/ml, the circulation of cow's milk system in ceramic membrane unit is 160l/m
2Hr, PH=6 will contain and directly enter ceramic membrane after bacterium cow's milk system is forced into 0.4MPa, can obtain qualified sterilized milk, sterilized milk total number of bacteria≤750/ml, Escherichia coli≤30MPN/100ml, mould≤4/ml.
Embodiment 2
A kind of sterilizing methods of ceramic membrane of cow's milk system may further comprise the steps:
As shown in Figure 1: adopt weight portion ratio component: alundum (Al, zirconia, 1: 4: 4 ceramic membrane of titanium dioxide, form 1 group of micro-filtration separative element, membrane aperture 10 μ m;
Described cow's milk system is a milk stoste, total number of bacteria: 245000/ml, and Escherichia coli 12000MPN/100ml, mould: 8/ml, the circulation of cow's milk system in ceramic membrane unit is 2000l/m
2Hr, PH=8 will contain and directly enter ceramic membrane after bacterium cow's milk system is forced into 0.1MPa, can obtain qualified sterilized milk, sterilized milk total number of bacteria≤150/ml, Escherichia coli≤11MPN/100ml, 5/ml of mould.
Other step is with embodiment 1.
Embodiment 3
A kind of sterilizing methods of ceramic membrane of cow's milk system may further comprise the steps:
As shown in Figure 1: adopt weight portion ratio component: alundum (Al, zirconia, 6 groups of micro-filtration separative elements of 4: 1: 3 of titanium dioxide, membrane aperture 1.4 μ m;
Described cow's milk system is a defatted milk stoste, total number of bacteria: 1000/ml, and Escherichia coli 10MPN/100ml, mould: 4/ml, the circulation of cow's milk system in ceramic membrane unit is 160l/m
2Hr, PH=11 will contain and directly enter ceramic membrane after bacterium cow's milk system is forced into 10MPa, can obtain qualified sterilized milk, sterilized milk total number of bacteria≤50/ml, Escherichia coli do not have, and mould does not have.
Other step is with embodiment 1.
Embodiment 4
A kind of sterilizing methods of ceramic membrane of cow's milk system, with embodiment 1, difference is to adopt weight portion ratio component: alundum (Al, zirconia, 3 groups of micro-filtration separative elements of 4: 1: 4 of titanium dioxide.
Claims (6)
1, a kind of sterilizing methods of ceramic membrane of cow's milk system may further comprise the steps:
The 1-6 group micro-filtration separative element that adopts ceramic membrane to form; To contain the pressurization of bacterium cow's milk system and directly enter described micro-filtration separative element; Described ceramic membrane is by base material and be coated on the base material titanium oxide active layer and form, wherein, described base material by alundum (Al, zirconia and titanium dioxide according to (1-4): (1-4): the mixture that part by weight (1-4) is formed; The membrane aperture of described ceramic membrane is 0.1-10 μ m; The pressure of described pressurization is 0.10-0.50Mpa.
2, according to the sterilizing methods of the ceramic membrane of the cow's milk system of claim 1, the membrane aperture of described ceramic membrane is 1.4 μ m.
3, according to the sterilizing methods of the ceramic membrane of the cow's milk system of claim 1, the flux of described cow's milk system in ceramic membrane unit is 1-2000l/m
2Hr.
4, according to the sterilizing methods of the ceramic membrane of the cow's milk system of claim 3, the flux of described cow's milk system in ceramic membrane unit is 160l/m
2Hr.
5, according to the sterilizing methods of the ceramic membrane of the cow's milk system of claim 1, the group number of described micro-filtration separative element is 4 groups.
6, according to the sterilizing methods of the ceramic membrane of the cow's milk system of claim 1, described cow's milk system is former breast or skimmed milk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310100351 CN1283160C (en) | 2003-10-13 | 2003-10-13 | Ceramic membrane sterilization method for cow milk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310100351 CN1283160C (en) | 2003-10-13 | 2003-10-13 | Ceramic membrane sterilization method for cow milk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1606916A CN1606916A (en) | 2005-04-20 |
| CN1283160C true CN1283160C (en) | 2006-11-08 |
Family
ID=34755922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310100351 Expired - Fee Related CN1283160C (en) | 2003-10-13 | 2003-10-13 | Ceramic membrane sterilization method for cow milk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1283160C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2317841C9 (en) * | 2005-12-27 | 2013-06-27 | Евгений Иванович ВЕРХОЛОМОВ | Device for filtering food liquids, mainly milk |
| CN102217674B (en) * | 2011-05-06 | 2015-11-18 | 中国农业科学院农产品加工研究所 | A kind of preparation method of low-heat milk powder |
| CN108017713A (en) * | 2016-11-04 | 2018-05-11 | 郑州伊美诺生物技术有限公司 | One step membrane filter method separates the device and method of milk antibodies |
| CN112244087A (en) * | 2020-10-28 | 2021-01-22 | 江南大学 | Method for producing high-activity shelf-life-prolonged milk by ultrasonic sterilization and microfiltration |
-
2003
- 2003-10-13 CN CN 200310100351 patent/CN1283160C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1606916A (en) | 2005-04-20 |
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Owner name: BEIJING ZHANHONGYU INVESTMENT CO., LTD. Free format text: FORMER OWNER: BEIJING MEMSEP TECHNOLOGY CO., LTD. Effective date: 20100115 |
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Effective date of registration: 20100115 Address after: Beijing Shunxing economic and Technological Development Zone, Road No. 20 Patentee after: Beijing exhibition Investment Co., Ltd. Hong Yu Address before: Beijing Longqing economic and Technological Development Zone Street No. 10 Beijing memsep Technologies Co Ltd Patentee before: Maishengpu Technology Co., Ltd., Beijing |
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Granted publication date: 20061108 Termination date: 20171013 |
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| CF01 | Termination of patent right due to non-payment of annual fee |