CN1644108A - Physically sterilizing process for fresh fruit juice - Google Patents
Physically sterilizing process for fresh fruit juice Download PDFInfo
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- CN1644108A CN1644108A CN 200510005034 CN200510005034A CN1644108A CN 1644108 A CN1644108 A CN 1644108A CN 200510005034 CN200510005034 CN 200510005034 CN 200510005034 A CN200510005034 A CN 200510005034A CN 1644108 A CN1644108 A CN 1644108A
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- fresh fruit
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Abstract
A physical sterilizing process for squeezed fresh fruit juice features that the squeezed fresh fruit juice is sterilized in a pulsive magnetic field which has 5-10 T for magnetic field strength, 5-20 for the number of pulses and 0-50 s for pulse spacing. Its advantages are no influence to nutritive components and color and high sterilizing effect.
Description
Technical field
The present invention relates to the technology that a kind of food production field utilizes strong magnetic field impulse sterilization.
Background technology
Sterilization is one of important operation in industries such as food, chemical industry, medicine.At present institute extensively the method for disinfection of employing mainly contain two kinds of chemical method and physics methods, chemical method is to come kill bacteria by adding chemical substance, reach the effect of anti-corrosive fresh-keeping, but this method is owing to introduced chemical substance, cause secondary pollution easily for food, medicine etc., thereby influence the healthy of people; The physics method mainly is a heat sterilization, and as pasteurization, high temperature method and ultra high temperature short time sterilization method, these methods are normally carried out under high-temperature condition, and therefore nutrition and the local flavor to food damages easily.At present, sterilization process heats up little, and is also relatively poor to the most of bactericidal effect of non-heat sterilization method that heat-sensitive ingredients influence in the food is lower, can't use in the food sterilization field.
Summary of the invention
Problem at above-mentioned existence, the object of the present invention is to provide a kind of physically sterilizing process for fresh fruit juice, the strong magnetic field impulse of this technology utilization carries out sterilization under low temperature or normal temperature, sterilization process intensification degree is lower, has the effect that keeps food nutrition and local flavor in the time of sterilization.
For achieving the above object, a kind of physically sterilizing process for fresh fruit juice of the present invention is: material is placed in the pulsed magnetic field material is carried out the pulsed magnetic field sterilization, wherein, pulsed magnetic field intensity is 5～10T, pulse number is 5～20 times, under the condition material is handled in 0～50 second at interval between each pulse.
Further, pulsed magnetic field intensity is 10T, and pulse number is 5 times, and be 10 seconds blanking time between each pulse.
The invention has the beneficial effects as follows: the temperature rise of sterilization material generally can not surpass 5 ℃, so the institutional framework of material, nutritional labeling, color all can not go to pot, and also can not influence original local flavor; Because pulsed magnetic field has stronger penetration capacity to food, can be deep into inside of food, can also pass through Flow of Goods and Materials in addition, reach the stirring mass transfer effect of forced fluid material, cause the no dead angle of sterilization, sterilization is thorough, is 10T in magnetic field intensity, when pulse number is 5 times, can reach 96% to the sterilizing rate of fresh apple juice.
Description of drawings
Fig. 1 is the structural representation of device that the present invention adopts.
The specific embodiment:
As shown in Figure 1, the device that the present invention adopts comprises: electric capacity accumulation of energy module, energy conversion module, electric capacity accumulation of energy module comprises charging controllable silicon 2, transformer 1, capacitor 7, current-limiting resistance 5, bridge rectifier 4, electric energy sample circuit 6 and comparator 3, transformer 1 is raised to 2400V with civil power, and change pulsating current into by rectification circuit 4, when 2 conductings of charging controllable silicon, the rising part of this pulsating current is again by 7 chargings of 5 pairs of capacitors of current-limiting resistance, the two-stage parallel connection of electric energy sample circuit 6 and capacitor 7, to detect what of capacitor 7 accumulation of energys, when the voltage of capacitor 7 reaches predetermined voltage, after comparator 3 compares sampled voltage and controls voltage, to charging controllable silicon 2 output control signals, make the 6 not conductings of charging controllable silicon, thereby finish the accumulation of energy process.Energy conversion module comprises discharging thyristor 9, coil 10 and heavy-duty diode 8, discharging thyristor 9, capacitor 7 and coil 10 constitute the power generation circuit of forward current, diode 8 and capacitor 7 constitute the bleed off loop of reversing the currents, after the accumulation of energy process finishes, discharging thyristor 9 conductings are converted to pulsed magnetic field by coil 10 with the electric field energy that electric capacity accumulation of energy module produces.Because when producing strong pulsed magnetic field, the peak value of pulse current is very big, can select 2000V, current effective value for use is that the controllable silicon of 800A is as discharging thyristor 9.For different needs, instrument can be equipped with the coil of different size, close can be in coil around long solenoid with magnetically confined, but inductance value is big, the time rate of change of electric current is little, so dB/dt is little; Number of turn dB/dt and the penetration depth few and pulsed magnetic field that coil produces that mean radius is big is all bigger; The number of turn pulsed magnetic field distributed areas that coil produced few and that mean radius is little are little, have good positioning.Coil external application one closed yoke encases solenoid coil, and the magnetic line of force that solenoid coil is produced wraps in the space in the yoke as far as possible, prevents the leakage of the magnetic line of force; Wherein, yoke is made with silicon steel sheet, and coil copper conductor coiling is to reach the purpose of protection and raising magnetic field intensity.
Under 20 ℃ of conditions, the strobe pulse magnetic field intensity is 5T, and pulse number is 20 times, total number of bacteria is reached 10 in 2 seconds at interval between each pulse
6The cider of cfu/ml is handled, and sterilizing rate can reach 90%.
The device that adopts is with embodiment 1.
Under 20 ℃ of conditions, the strobe pulse magnetic field intensity is 6T, and pulse number is 15 times, total number of bacteria is reached 10 in 10 seconds at interval between each pulse
6The cider of cfu/ml is handled, and sterilizing rate can reach more than 92%.
The device that adopts is with embodiment 1.
Under 20 ℃ of conditions, the strobe pulse magnetic field intensity is 10T, and pulse number is 5 times, total number of bacteria is reached 10 in 50 seconds at interval between each pulse
6The cider of cfu/ml is handled, and sterilizing rate can reach 96%.
Claims (2)
1, a kind of physically sterilizing process for fresh fruit juice, it is characterized in that: material is placed in the pulsed magnetic field material is carried out the pulsed magnetic field sterilization, wherein, pulsed magnetic field intensity is 5～10T, pulse number is 5～20 times, under the condition material is handled in 0～50 second at interval between each pulse.
2, physically sterilizing process for fresh fruit juice according to claim 1 is characterized in that, pulse strength is 10T, and pulse number is 5 times, and be 50 seconds blanking time between each pulse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100050340A CN100341435C (en) | 2005-01-31 | 2005-01-31 | Physically sterilizing process for fresh fruit juice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100050340A CN100341435C (en) | 2005-01-31 | 2005-01-31 | Physically sterilizing process for fresh fruit juice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644108A true CN1644108A (en) | 2005-07-27 |
| CN100341435C CN100341435C (en) | 2007-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100050340A Expired - Fee Related CN100341435C (en) | 2005-01-31 | 2005-01-31 | Physically sterilizing process for fresh fruit juice |
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| CN (1) | CN100341435C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674737B (en) * | 2007-03-21 | 2014-02-19 | Opus工业股份有限公司 | Sterilisation of liquids in hermetically closed vessels |
| CN104187452A (en) * | 2014-07-04 | 2014-12-10 | 四川省汇泉罐头食品有限公司 | Preparation method for kiwi berry can |
| CN107279832A (en) * | 2017-05-03 | 2017-10-24 | 中国农业科学院农产品加工研究所 | Prepare the full powder of method, carrots chips and carrot nutritional of carrots chips |
| CN107494722A (en) * | 2017-07-17 | 2017-12-22 | 湖南省粮油产品质量监测中心 | A kind of preserving rice method of high working ratio pulse magnetic field treatment |
| CN107890000A (en) * | 2017-12-25 | 2018-04-10 | 贵州山王果健康实业有限公司 | A kind of Rosa roxburghi Juice sterilization fresh-keeping mechanism |
| CN111066992A (en) * | 2019-12-31 | 2020-04-28 | 江苏大学 | Fruit juice sterilization method combining strong pulse light with pulsed magnetic field |
-
2005
- 2005-01-31 CN CNB2005100050340A patent/CN100341435C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674737B (en) * | 2007-03-21 | 2014-02-19 | Opus工业股份有限公司 | Sterilisation of liquids in hermetically closed vessels |
| CN104187452A (en) * | 2014-07-04 | 2014-12-10 | 四川省汇泉罐头食品有限公司 | Preparation method for kiwi berry can |
| CN107279832A (en) * | 2017-05-03 | 2017-10-24 | 中国农业科学院农产品加工研究所 | Prepare the full powder of method, carrots chips and carrot nutritional of carrots chips |
| CN107494722A (en) * | 2017-07-17 | 2017-12-22 | 湖南省粮油产品质量监测中心 | A kind of preserving rice method of high working ratio pulse magnetic field treatment |
| CN107890000A (en) * | 2017-12-25 | 2018-04-10 | 贵州山王果健康实业有限公司 | A kind of Rosa roxburghi Juice sterilization fresh-keeping mechanism |
| CN111066992A (en) * | 2019-12-31 | 2020-04-28 | 江苏大学 | Fruit juice sterilization method combining strong pulse light with pulsed magnetic field |
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| Publication number | Publication date |
|---|---|
| CN100341435C (en) | 2007-10-10 |
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