CN1079626A - Handle the method and the device of substrate - Google Patents
Handle the method and the device of substrate Download PDFInfo
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- CN1079626A CN1079626A CN93106339A CN93106339A CN1079626A CN 1079626 A CN1079626 A CN 1079626A CN 93106339 A CN93106339 A CN 93106339A CN 93106339 A CN93106339 A CN 93106339A CN 1079626 A CN1079626 A CN 1079626A
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/26—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by irradiation without heating
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
- A23L3/0055—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment with infrared rays
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nutrition Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Laser Surgery Devices (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention relates to a kind of method that is used to reduce the processing substrate of the organism pollution level relevant, particularly to being used for the processing of veterinary and foodstuff medically and article with substrate.This method is carried out direct laser emission to substrate, and the form of laser emission and quantity are selectable, do not have the relevant organism of viability thereby handle with substrate, and the required character of substrate itself remains unchanged.The invention also discloses a kind of device of handling various substrate that is applicable to.
Description
The present invention relates to a kind of method of handling substrate, its objective is and reduce the degree that the organism relevant with substrate pollutes; The present invention be more particularly directed to being used for the processing of veterinary and foodstuff medically and article.
The sterilization widely that vegetable material such as fruit, vegetable and corn are carried out and biological proofing be in order to eliminate unwanted pollution.These processing are inappropriate to environment usually, and there is potential danger in the consumer of product, and are eradicating some parasitic bulk-growth particularly aspect the conk, and the effect of this processing is relatively poor.Similarly, many animal products must be anticipated acceptable level when reducing contaminating microorganisms and use to the end before selling, and for example egg and poultry products are immersed in the germicidal solution usually with eliminating bacteria, as Salmonella and Listeria monocytogenes.
For these chemical treatments, physical disinfection is handled in the goods that are applied in routinely for consumer, veterinary or medically use further.For example, applied microwave is disinfected the mushroom fungi plant, and autoclaved has then constituted the basis of in autoclave medical apparatus and instruments being handled.These processing all have potential danger and/or energy intensity and/or need time enough to reach optimum effect.And end article is foodstuff or chemical individual, and its structure may be changed into and impair desirable characteristic such as local flavor and/or effectiveness.
The invention provides a new method, all substrate of being mentioned above this method can be applied to or the like.Use this method can make the organism of pollution obtain not having the processing of viability at short notice, and do not have the adverse effect of previous method, do not influence the quality of end article requirement or stay residue environment or physiology infringement.And, in some applications, for example suppressing some parasitic bulk-growths, as the conk aspect, this method is more effective than existing method.
This method depends on such fact, is elevated on the critical temperature and when keeping time enough, this organism can no longer include viability when polluting organic temperature.This temperature will be with organic difference difference, but for a lot of antibacterials and fungus, this temperature is approximately 45 ℃.Yet by using as thermal medium the superheated steam or the radiation of use as microwave, the temperature of substrate also will rise to certain value, and this temperature value is unsuitable fully to the use of end article.In the method, when stromal surface or be heated to when losing foregoing viability with the organism that the liquid form that is suspended in the substrate exists, substrate (not being its surface) still is not subjected to the influence of described processing.
From the aspect of maximum, the invention provides a method of handling substrate, to reduce the organic level of polluting.This method is included in directly laser emission on the substrate, and the pattern of laser emission and quantity can be selected, as long as make it can handle the organism relevant with there not being viability substrate, and in fact the character of substrate itself remain unchanged.
In the method for optimizing of first aspect present invention, substrate and laser radiation move relative to each other to guarantee that stromal surface is exposed in the radiation basically.Preferably, the relative motion of substrate comprises the rotation with respect to laser radiation of substrate such as food unit, rolls for more preferably.Therefore, the unitary continuous rolling of for example realizing on the drum-type conveyer belt of routine of food can be used, other move easily will be below the present invention described device illustrated.
Laser radiation can be had the ability to reach requirement heating organism forever do not change the required character of substrate to there not being viability lasing light emitter and supplied with by any.Typical example is the laser of heat, for example carbon dioxide (CO
2) and yttrium-aluminium-garnet (YAG) lasing light emitter.Such lasing light emitter is had the ability to be about in power output and is made things convenient for real estate to give birth to laser radiation under 30 to 50 watts, but other power output also is applicable, is particularly having on the substrate of the bigger composition that rejuvenates than foodstuff.This will be estimated by those skilled in the art.
The lasing light emitter of YAG easily of example that is used for describing below and device is the neodymium (Nd: YAG) that mixed up yttrium-aluminium-garnet.CO
2Radiate bright dipping with YAG laser with different wavelength.CO
2Be 10.6 microns, YAG is 1.06 microns.Because the different absorption level of irradiated object, employed laser pattern need be selected with regard to each object.For example, tuber is handled, preferred laser is Nd: YAG, then is CO to egg
2Have been found that and all be convenient to for these two kinds under continuous wave CW mode, operate, but under suitable lasing light emitter, pulsed also can be used.
The laser example suitable for the CW mode has CO
2Laser and Nd: YAG laser, wherein CO
2Laser can have been bought from California, USA Synrad company, and model is D48/5(60 watt), Nd: YAG laser can have been bought from the Spectron laser system of Britain Rugby, and model is SL901(90 watt).The power density of these laser is approximately 50 watts/centimetre
2
The shape of laser radiation is variable, but the light beam that can adopt fan-shaped divergent beams expediently or provide by one or more lasing light emitters.These light beams are easily towards the route that crosses substrate transportation, provide whole surface is carried out irradiation and needn't be made the substrate motion but substrate can be placed into one or more lasing light emitters.When handling the liquid of laser irradiation, laser emission can be placed into crosses whole cross section and passes through flow of liquid.
Laser beam can make its one-tenth fan-shaped by the whole bag of tricks, is apparent that to use scanning mirror or pass through to use the cylinder eyeglass.Scanning mirror is used for folded light beam.Explanation for example, laser is that diameter is approximately 5 to 6 millimeters directional lights, they rotate around central shaft.This operation can be by computer control to provide predetermined scanning angle and speed.The method of cylinder eyeglass is before irradiating object, places an eyeglass in beam.Thereby causing beam deflection to be created in the sectored light under the certain angle, this angle is controlled by lens geometry.
Placement between lasing light emitter and processed substrate distance can change, and this distance is made up of two parts route: (ⅰ) distance from lasing light emitter to fan-shaped mechanism reaches (ⅱ) fan-shaped mechanism to the distance of object.For (ⅰ), light beam is parallel and can be by reflexing to the remote transmission of fan-shaped mechanism, this distance can from several centimetres to tens of rice, but in the present embodiment, this distance is about 50 centimetres.For (ⅱ), determined substrate to be exposed to the scope that covered by fan beam among the laser fully from the distance of fan-shaped mechanism and the segment angle that provided.Distance and the segmental angle of composition are about 50 centimetres and 20 ° respectively easily.
The structure of the part of blood processor is used for installing substrate, all can by laser irradiation to the support part by avoiding thermogenetic material to constitute.Therefore, metal is used in the parts suggestion that links to each other with suitable heat abstractor system, can avoid like this by transporting and the indirect of assembly structure to substrate.Otherwise in all possible step, any object except that stromal surface or organism all should be avoided heating.
This will be estimated, and the suitable temperature control of all surface of contacting substrate will allow high relatively surface area to collect organism, particularly microorganism; When allowing substrate to have low relatively surface to volume ratio, organism is treated to no viability, and substrate is kept under this temperature, and its required character can not be affected substantially enduringly.Concerning the those of skill in the art of those control temperature, will produce suitable cooling body.
Any substrate all can be handled its surface by method of the present invention, but most of substrate of handling are if then have adverse influence with the method for distinguishing processing.For this reason, will be favourable to the thermoplasticity that also will use and the processing of chemosensitive material after some sterilization.Yet most of suitable substrate will be any consumable materials, and they can influence the required character of its taste or quality or other by known processing.The bonded crop of every energy (seed and frumentum), vegetable, root piece crop, fruit, feedstuff, ornamental plant, leaf and bean (tea, Nicotiana tabacum L., coffee) and dairy factory and can handle with the place that laser transmits fluid product comprise that plantation/sowing is before or after gathering in the crops.
Organism is processed into no viability or is eliminated, typical and microorganism the most effectively, for example antibacterial, fungus, algae and virus.For example the substrate of egg is subject to the influence of antibacterial such as Salmonella, and it can be successfully processed.
By method of the present invention, the present invention further provides the device that is used for the substrate laser treatment, comprise (a) lasing source; (b) being used to operate substrate is article and unitary device, and by blood processor, laser radiation can be radiated on the processed substrate, pollutes that organism is treated to no viability and the required character of substrate remains unchanged.
Preferred device comprises a laser beam that is used to influence the equipment of substrate relative motion and is used to shine each main position of cell surface.
Matrix optimization ground is transmitted as the unit of article such as vegetable material, along a processing path movement, realizes unitary relative motion and laser emission typically on roller conveyor, and can transport it into continuous processing region.Other path also can be provided, and for example transmits that part of determined fluid path of wall by the laser by laser irradiation; Perhaps by the determined path of a series of reflection units, like this, substrate will guarantee that on the vertical direction of laser emission path its main area is exposed on the proper level of laser, thereby reaches desirable effect.If be mounted to like this, make one or more laser beams can cover its whole outer surface basically, so independent article can be handled under the relative motion not having.
Preferably a series of laser beams in acceptance point straight radial separately, are typically fan beam as described above along conveyer belt.
Therefore, device of the present invention is suitable to handling substrate.Because most of substrate only need to handle its outer surface, do not allow laser irradiation to run through, therefore a lot of different products can be handled with identical device, as long as laser pattern (CO
2Or YAG), time of exposure and power level adjust to and handle the suitable numerical value of pollutant, should make to pollute organism and lose viability, do not damage substrate again.
The mechanism and the substrate on chiller surface interrelate, and this is that those those skilled in the art are conceivable, but need carry out special training to the last use of special device.
To describe method and apparatus of the present invention by example and accompanying drawing below, other embodiment will be conceivable concerning those skilled in the art.
Accompanying drawing
Fig. 1 has represented the plane graph of device provided by the invention, and it is suitable for handling big relatively substrate article such as Rhizoma Solani tuber osi or egg.
Fig. 2 has represented the laser treatment unit perspective internal view of Fig. 1 device.The layout of having represented lasing light emitter, the transfer cylinder of longitudinal extension and substrate article.Fig. 2 A has represented the cross section of cylinder end and substrate article.
Fig. 3 has represented the different situations of Fig. 2 inside, and cylinder is to the crosscut of article traffic direction, and Fig. 3 A has represented the cross section of cylinder and substrate article.
Fig. 4 has represented and the different plane graph of Fig. 1 device of the outline drawing that is used to handle Rhizoma Solani tuber osi that Fig. 4 A has represented the unitary perspective internal view of the laser treatment of this device.
Fig. 5 has represented the cross section by device provided by the invention, is suitable for fluidic processing, especially liquid.Fig. 5 A has represented the unitary executive component perspective view of the laser treatment of this device.
Fig. 6 has represented the cross section of device of the present invention, is suitable to handling flowable substrate, for example granular material such as whole frumentum.
Example 1: use the sterilization of the eggshell of various different laser energy
The artificially is with the spore of salmonella enteritis antibacterial and the fungus aspergillus Aspergillus fumigatus hen egg that depollutes, make it stand laser irradiation from the different-energy level of two independent light sources, the disinfective action of laser can be determined by the residue level of comparison process after stain.
With depollute 4 square centimeters area of 700 hen egg blunt ends of the spore of the suspension of salmonella enteritis and fungus aspergillus Aspergillus fumigatus.The meat soup that spends the night of preparation salmonella enteritis in the buffering peptone water, the Aspergillus fumigatus that grows on the malt agar culture dish is up to the Sporulation of many births.The suspension of spore is by preparing with maximum diluent (MRD) cleaning disc that recovers.Use a kind of transplanting ring and 2 * 2 centimetres of templates the suspension of 10 microlitre volumes to be coated in continuously 4 centimetres of each egg blunt end
2On, at room temperature preserve one night of egg.
6 batches of 100 contaminated eggs are stood to disinfect, at whole pollution range scanning laser beam.Before the scanning, give each egg location with hands.Every kind of laser (CO
2Source and YAG source) with three energy levels.Control for the egg surface by changing laser power and scanning speed energy delivery.The salmonella enteritis of surviving and the number of aspergillus aspergillus fumigatus spores have been determined on the egg of having handled and at 100 eggs of controlling that are untreated.
By laying the aseptic plastic bag that has 10 milliliters of MRM at each egg and rubbing gradually contaminated surperficial two minutes by bag, then antibacterial and fungus are just removed from the egg surface.Ten times of serial dilutions are made up of cleaning mixture, for the counting Salmonella, an amount of diluent are applied on agar culture medium, and for counting aspergillus Aspergillus fumigatus fungus, an amount of diluent are applied on the OAES agar culture medium.The XLD culture dish was hatched through 4 days under 37 ℃, counted two kinds of organic visible bacterium colonies, calculated the organism quantity that can survive in each egg.Meansigma methods is calculated and with MINITAB computer software data the result analyzed, shown in following table 1 and table 2.
Table 1
| Handle | The power density watt/centimetre 2 | Parameter watt/scanning speed mm/second | Average counter/chicken dawn | |
| Salmonella enteritis | The aspergillus Aspergillus fumigatus | |||
| Y 1 | 0.4 | 1.85/193.5 | 16000 | 3700 |
| Y 2 | 2.7 | 12.5/193.5 | 26000 | 4300 |
| Y 3 | 27.0 | 23/60 | 11000 | 2200 |
| C 1 | 0.2 | 1.6/193.5 | 29000 | 5400 |
| C 2 | 1.65 | 10.5/162.5 | 8600 | 6700 |
| C 3 | 30.0 | 11/34 | 81 | 640 |
| Control | 29000 | 540 | ||
Through C
3There are 57 can not be recovered to Salmonella among 100 eggs handling.Under similar energy level, carbon dioxide (CO
2) lasing light emitter proof is more effective than yag laser source.When highest energy, CO
2It is 99.7% that laser reduces salmonella-polluted average, and bigger aspergillus aspergillus fumigatus spores resistance is 86.9%.
Table 2
| Handle | The percent (being rounded up to nearest integer) that the survival organism reduces | |
| Salmonella enteritis | The aspergillus Aspergillus fumigatus | |
| Y 1 | 44.82 | 30.61 |
| Y 2 | 62.06 | 55.10 |
| C 1 | 0 | 0 |
| C 2 | 70.34 | 0 |
| C 3 | 99.72 | 86.9 |
Different pieces of information the analysis showed that, every kind of difference of handling meansigma methods is 5%, and this difference is not because the variation in each sample, therefore, proved that laser can be used for reducing effectively especially antibacterial and the fungus on the eggshell of substrate.
Example 2: laser is to the sterilization functions of egg inside
Adopt laser that the suitability of egg surface sterilizing is estimated, by the effect of this processing to egg inside determined in the monitoring of chicken embryos early growth influence.For this is estimated, at the CO of 5 mm wides
2Used a rotation platform in the path of source laser bundle, made above the blunt end of egg is placed in.
Egg is to obtain from 450 hens from roasted master worker, poultry raiser, stock.Two batches of 150 eggs make in its step that is exposed to the laser sterilization by scanning its surface.The radiation continuously of 5 millimeters light beam, the result is after the rotation of each egg, and light beam moves down, and causes that eggshell handles continuously at its circumference.The energy level of laser is that corresponding C is stood on the surface
2And C
3The level of handling, this is to carry out under the superincumbent experiment main points.Table 3 has been listed the parameter of scanning.
Table 3
| Egg rotation rev/min | Output power of laser watt | |
| C 2 | 78 | 10.6 |
| C 3 | 16 | 30 |
Before in " west " cultivator, hatching, the egg overnight storage of the egg of handling and 150 controls of being untreated.The egg of the control of being untreated of equivalent amount and from careless being placed in in 5 cultivator trays each of the two batches of pending eggs.After hatching 5 days, open all eggs and also expertly embryo's growth conditions is estimated, the result of these evaluations provides in the following Table 4.
Table 4
| Handle | Cultivator | The egg number | Barren | Dead antibacterial | The antibacterial that lives |
| C 2 | 1 | 90 | 12 | 4 | 73 |
| 2 | 60 | 11 | 3 | 46 | |
| Amount to | 150 | 23 | 7 | 119 | |
| C 3 | 1 | 90 | 18 | 4 | 68 |
| 2 | 60 | 5 | 8 | 47 | |
| Amount to | 150 | 23 | 12 | 115 | |
| Control | 1 | 90 | 15 | 3 | 72 |
| 2 | 60 | 11 | 2 | 47 | |
| Amount to | 150 | 26 | 5 | 119 |
Therefore, handle C
2And C
3Demonstrate under this method, the live embryo number that is produced by processed egg does not have great adverse effect.
Example 3: be used for the device that the egg surface sterilizing is handled
As shown in Figure 1, arranged some conveying rollers (1) in parallel with each other along the carriage direction of device, spiral clamping element (2) is arranged in the surface of cylinder, so just makes at the article (3) that are close to recess between the cylinder to rotate and push ahead.These recesses (4) refer to and form narrow road therein, and they extend to charging aperture (5), laser treatment unit (6) and be sent to classification and the discharging opening of packing (7) along transfer path.Cylinder or be that clamping element is made by elastomeric material at least, for example rubber.When article travelled forward, article were around the axle rotation that is transverse to direct of travel.
When adopting substrate article such as egg to be placed on narrow road, cylinder is driven around its longitudinal axis rotation, like this, article is pushed ahead, and is rotating and is passing through arrival classification of laser treatment unit and bagging area.
As shown in Figure 2, there are two YAG or CO in the unitary inside of laser treatment
2The fan-shaped device of lasing light emitter (8) is mounted to towards corresponding narrow road and does laser emission, and the laser irradiation profile is fan-shaped (9), (10), and its plane parallel is in cylinder.Like this, when their rotated and travel forward by this zone, laser irradiation was also processed on article, but in fact can not shine any position of cylinder.Any radiation by narrow road is all offset by the fin under the cylinder, and for example, the light beam brake of light absorbent is placed on the opposite of a certain position, and light beam is launched from this position, can catch any useless laser.
The variation of connecting gear is shown in Fig. 3, and some power drums (11) are arranged to and are transverse to the direction that article such as egg are advanced, and remain on the recess between the adjacent roller upper surface.They cause the egg rotation when cylinder rotates, and previous not exposed surface is exposed in fan of laser light (9), (10).Cylinder itself is caused advances by the laser treatment unit, passes through the laser treatment unit as the cylinder belongings.In this situation, cylinder itself does not remain in the processing unit place, has therefore avoided risk of overheating.Under the two situation, the laser segment angle all is approximately 20 °, about 50 centimetres away from article be.
Example 4: use laser to the Rhizoma Solani tuber osi control of pathogens
The potato seed tuber is the root of the inoculum of several important diseases, and these diseases comprise a sclerotiniose (Rhizoctonia Solani), anthrax (Colletotrichum coccodes), silver-colored scall (Helminthosporium Solani), powdery scab (Spongospora subterranea), epidermis spot disease (Polyscytalum pustulans), gangrenosis (Phoma foveata), dry rot (Fusarium caeruleum) and balck shank (Erwinia carotovora ssp atroseptica).The control of disease mainly depends on and suppresses or kill to be trapped in the interior pathogen of seed stock in the crop pathogen tuber.This is a vast market, in order to produce healthy crop, antifungal can be applied to the seed tuber, and still, most of products do not have the very activity of broad scope, needs to use more antifungal usually.In addition, the drug resistance of antifungal has further been become a bad problem, all new drugs must be registered registrations and be given the ratification in Britain before legal use.Minimizing is used the consumption and the quantity of agrochemical to potato crop and used possible method is the constantly pressure of development to reduce these diseases.
For laser treatment is estimated, selected epidermis to have the tuber of natural disease.Studied the problem of determining organic viability by the whole bag of tricks that is applicable to this specified disease.These of research tuber change, and changed the infringement that disease causes or changed organism after being exposed to laser.
In test, for the energy of exploring laser light, we change the laser gait of march of passing the tuber surface in wide range, and this energy may be deleterious to epidermis, and those energy are invalid so.Use three interior power levels of the less definite scope of laser gait of march to determine the interaction relationship of these laser parameters, the result shows that 30 watts is a suitable power level.
In the initial test of using anthrax as the appointment pathogen, Rhizoma Solani tuber osi is 612mm/sec with relative gait of march between the light beam, light beam power is 30 watts, the result has nearly caused 50% damage sheet to separate from the tuber epidermis, when in the culture dish of transferring to agar culture medium, produced fungi growth.When relative velocity was 214 mm/second, control was 100%, when speed obtains bad control during greater than 612 mm/second (for example 1010 mm/second and more than).
Test with different power levels, shown that its viability does not have difference when using rhizoctonia disease as the appointment pathogen.These are controlled under the long irradiation time is good.Significant be after hatching, record has also been made in the long control of Penicillium diease occurrence.Turntable is with various rotational speed, and away from 50 centimetres of scan mirror, scan mirror usually scans to move both vertically on the centrage of the side of Rhizoma Solani tuber osi.In table 5, scanning speed is given with gait of march, and laser power density is approximately 50 watts/centimetre
2
Table 5
| Laser persistent period recovery per cent % recovery per cent % power 0-5 rhizoctonia disease Penicillium disease | |||
| 30 0 100 49 30 1 79 46 30 2 32 13 30 3 11 0 30 4 5 5 30 5 0 0 |
Table 5(is continuous)
| 45 0 95 44 45 1 19 17 45 2 46 6 45 3 3 7 45 4 3 3 45 5 0 0 | |||
| 60 0 93 47 60 1 46 17 60 2 33 20 60 3 26 18 60 4 8 14 60 5 5 8 |
Persistent period/gait of march.0=zero, and 5=is the longest, and 1=is the shortest.5=106.7 mm/second, the 4=133.3 mm/second, the 3=160.0 mm/second, the 2=186.7 mm/second, 1 greater than 186.7 mm/second.
Laser energy is used on different organisms the results are shown in table 6.
Table 5
| Gait of march | Recovery per cent % epidermis anthrax silver scall spot disease gangrenosis dry rot | ||||
| 0 1 2 3 4 | 95 100 22 80 56 76 90 6 62 0 51 38 0 20 0 9 6 0 0 0 6 0 0 0 0 | ||||
This evidence the effectiveness of control Erwinia Carotovora ssp atroseptica and above-mentioned disease.Use these experimental condition proofs to be easy to make processed epidermis area necrosis, but do not rot for the second time to take place, shown that storage and consumption can keep required character when using.Yet showing with YAG experiment at least can adjusting parameter, when the control organism, can avoid this influence.The inactive state of Flos Rosae Rugosae tuber eye and the rate of growth of sprouting seedling can not be affected and keep the quantity of chemical compound.
Example 5: the laser machining device that is applicable to pairing approximation spherical product such as Rhizoma Solani tuber osi
Be applicable to that the blood processor to handling almost spherical object such as potato tubers is shown in Fig. 4.A roller conveyor (12) passes the laser treatment unit (13) between loading hopper, Hierarchical Network, cull board (14,15,16) and the case fill (17).Fig. 4 A has represented the unitary internal arrangement of laser treatment, and lasing light emitter is wherein arranged, and about 50 centimetres far away of the article of lasing light emitter on conveyer, scanning mirror or eyeglass are equipped with segment angle to light beam (9), (10) be 20 ° fan of laser light.Fan-shaped laser irradiation is on cylinder and article (18), and cylinder (19) is arranged at the crosscut direct of travel, when they rotate during by processing unit, can cause the article rotation like this, thereby the whole surface of article is exposed among the light beam substantially.Cylinder is done by metal, therefore, allows the very fast conduction of heat, leaves the article that recess carries, and these article are between adjacent upper surface.It is passive that the driving of cylinder advised, and when conveyer is driven around its path, is caused the rotation of cylinder or is made the cylinder activity by the driving device that acts on each independent cylinder by supporting member.
Example 6: the laser machining device that is applicable to treat liquid such as water, alcoholic beverage and fruit juice
Be applicable to that the device of handling the organic treat liquid of no viability is shown in Fig. 5, wherein, a conduit (20) is being with liquid by laser treatment unit (21), in Fig. 5 A more detailed description is arranged.In Fig. 5 A, two fan-shaped devices of laser are approximate from 50 centimetres of glass lasers, transmit liquid and comprise plate (22), (23), as described above.The segment angle that produces laser (9) (10) is 20 °.The pattern of these lasing light emitters is top descriptions, can be YAG or CO
2Pattern, this depends on the characteristic of processed liquid.Liquid flows between the plate that laser passes through; Keep with its fan of laser light and motionlessly to cross flat board not as scanning.The organism that exists in liquid becomes no viability by laser treatment, and liquid can be soon and/or be cooled to required temperature from the exit of useful processing unit residue.
Example 7: the laser machining device that is applicable to flowable material such as corn
Be applicable to that handling the blood processor that pollutes no viability organism, laser irradiation flowable material such as corn is shown in Fig. 6.Corn in Fig. 6 (24) enters the pipe-type combustion chamber (25) of vertical orientation by ribbon conveyer (26), and therefore, dust upwards separates it with rice husk by extraction element (26), and the laser treated region of paddy material below under action of gravity, dropping to.Local derviation pipe (27) is made by suitable material, grain is rolled down continuously and change direction as fin, and type of laser described above fan-shaped (9) (10) is from the some spots irradiation grain of pipe-type combustion chamber.Fan-shaped laser is entered in the pipe-type combustion chamber by groove (28) by the fan-shaped mechanism away from 50 centimetres in grain path.In all these equipment, light source itself can be away from several centimetres to several meters distance, but is from 50 centimetres in fan-shaped source easily.Other all parameter is as former description.
In this case, can expertly operate fan-shaped laser beam so that cover more grain as far as possible at the area of whole arrangement.For persistent period of remaining valid and can cover all grain planes basically, before flowing out, conveyer can use several fan-shaped laser at grain.
Claims (17)
1, a kind of method that is used to reduce pollution organism, processing substrate, comprise laser radiation is aimed at substrate, the pattern of selecting laser emission and quantity are handling and the relevant organism of no viability substrate, and in fact the required character of substrate itself remain unchanged.
2, method according to claim 1, its mesostroma are a kind of consumption materials, and the organism of pollution is microbial fungi and/or algae.
3, method according to claim 1 and 2, its mesostroma and laser emission move relative to each other to guarantee that stromal surface is exposed in the laser radiation basically.
4, method according to claim 3, the relative motion of its mesostroma comprise matrix phase and rotate for laser radiation.
5, according to any one described method of claim 1 to 4, wherein laser emission is by CO
2Provide with the YAG lasing light emitter.
6, method according to claim 5 wherein is about 30 to 50 watt-hour lasing light emitters in power output and has the ability to produce laser emission.
7, according to the described method of above-mentioned any one claim, wherein lasing light emitter is with the work of continuous wave mode.
8, according to the described method of above-mentioned any one claim, wherein the power density of laser is approximately 50 watts/centimetre
2
9, according to the described method of above-mentioned any one claim, wherein laser emission is to provide by fan-shaped divergent beams or by the light beam from one or more light sources.
10, method according to claim 9, wherein can it to be become fan-shaped for laser beam, and significantly method is to use scanning mirror or cylinder eyeglass.
11, according to claim 9 or 10 described methods, wherein laser beam was that diameter is about 5 to 6 millimeters directional light before formation is fan-shaped.
12, according to any one described method of claim 9 to 11, wherein fan-shaped laser beam is approximately 50 centimetres, segment angle to the distance of processed substrate and is about 20 °.
13, a kind of device of substrate laser treatment comprises (a) lasing source; (b) device of an operation substrate, the organism that laser emission is polluted on the substrate by operating means operation is treated to no viability and the required character of substrate does not change.
14, device according to claim 13 comprises being used to the laser beam that influences the device of substrate relative motion and be used to shine the main position of each cell surface.
15,, comprise a processing path by continuous processing region according to claim 13 or 14 described devices.
16, device according to claim 15, its mesostroma transmit conveyer belt along handling the path on the cylinder conveyer belt, conveyer belt influences relative motion between substrate and the laser beam.
17, device according to claim 15, wherein the path can be determined by a series of refracting means, thereby causes that substrate redirects in the laser emission path.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929209103A GB9209103D0 (en) | 1992-04-27 | 1992-04-27 | Laser treatment of plant material |
| GB9209103.2 | 1992-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1079626A true CN1079626A (en) | 1993-12-22 |
Family
ID=10714641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93106339A Pending CN1079626A (en) | 1992-04-27 | 1993-04-27 | Handle the method and the device of substrate |
Country Status (17)
| Country | Link |
|---|---|
| EP (1) | EP0637918A1 (en) |
| JP (1) | JPH07506744A (en) |
| KR (1) | KR950701193A (en) |
| CN (1) | CN1079626A (en) |
| AU (1) | AU669013B2 (en) |
| BG (1) | BG61377B1 (en) |
| BR (1) | BR9306293A (en) |
| CA (1) | CA2118516A1 (en) |
| CZ (1) | CZ262294A3 (en) |
| FI (1) | FI945035A (en) |
| GB (3) | GB9209103D0 (en) |
| HU (1) | HUT71647A (en) |
| IL (1) | IL105522A0 (en) |
| NZ (1) | NZ252710A (en) |
| RU (1) | RU94045934A (en) |
| SK (1) | SK128294A3 (en) |
| ZA (1) | ZA932956B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997001361A1 (en) * | 1995-06-26 | 1997-01-16 | Qingdao First Convalescent Hospital Of Pla Jinanjunqu | Sterilization method and apparatus of using laser pump source |
| CN113057278A (en) * | 2021-03-29 | 2021-07-02 | 苏州光线跃动工业智能科技有限公司 | Laser sterilization equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2195408A1 (en) * | 1972-08-11 | 1974-03-08 | Dufour Adrien | Thermal treatment in depth of food prods. - using laser beams on finished prods. to destroy bacteriological activity |
| US3955921A (en) * | 1972-09-19 | 1976-05-11 | Eli Lilly And Company | Method of killing microorganisms in the inside of a container utilizing a laser beam induced plasma |
| US4871559A (en) * | 1983-11-23 | 1989-10-03 | Maxwell Laboratories, Inc. | Methods for preservation of foodstuffs |
| FR2621529A1 (en) * | 1987-10-09 | 1989-04-14 | Bongrain Sa | Method for thermal treatment of a food product, in particular a cheese or pork butchery food product; method for marking such a food product, marking apparatus for implementing the method; food product thus treated or marked |
| DD291471A5 (en) * | 1989-12-21 | 1991-07-04 | Janz,Immo,De | METHOD AND DEVICE FOR OPENING AND EMPTYING EGGS |
-
1992
- 1992-04-27 GB GB929209103A patent/GB9209103D0/en active Pending
-
1993
- 1993-02-25 GB GB939303841A patent/GB9303841D0/en active Pending
- 1993-04-27 CN CN93106339A patent/CN1079626A/en active Pending
- 1993-04-27 BR BR9306293A patent/BR9306293A/en unknown
- 1993-04-27 SK SK1282-94A patent/SK128294A3/en unknown
- 1993-04-27 JP JP5519059A patent/JPH07506744A/en active Pending
- 1993-04-27 RU RU94045934/13A patent/RU94045934A/en unknown
- 1993-04-27 IL IL105522A patent/IL105522A0/en unknown
- 1993-04-27 HU HU9403018A patent/HUT71647A/en unknown
- 1993-04-27 AU AU51552/93A patent/AU669013B2/en not_active Ceased
- 1993-04-27 ZA ZA932956A patent/ZA932956B/en unknown
- 1993-04-27 NZ NZ252710A patent/NZ252710A/en unknown
- 1993-04-27 KR KR1019940703897A patent/KR950701193A/en not_active Application Discontinuation
- 1993-04-27 GB GB9420400A patent/GB2280371B/en not_active Expired - Fee Related
- 1993-04-27 EP EP93911871A patent/EP0637918A1/en not_active Withdrawn
- 1993-04-27 CZ CZ942622A patent/CZ262294A3/en unknown
- 1993-04-27 CA CA002118516A patent/CA2118516A1/en not_active Abandoned
-
1994
- 1994-10-24 BG BG99133A patent/BG61377B1/en not_active Expired - Lifetime
- 1994-10-26 FI FI945035A patent/FI945035A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997001361A1 (en) * | 1995-06-26 | 1997-01-16 | Qingdao First Convalescent Hospital Of Pla Jinanjunqu | Sterilization method and apparatus of using laser pump source |
| CN113057278A (en) * | 2021-03-29 | 2021-07-02 | 苏州光线跃动工业智能科技有限公司 | Laser sterilization equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| BG61377B1 (en) | 1997-07-31 |
| HU9403018D0 (en) | 1994-12-28 |
| SK128294A3 (en) | 1995-04-12 |
| GB9420400D0 (en) | 1994-11-30 |
| GB2280371B (en) | 1996-04-24 |
| GB9209103D0 (en) | 1992-06-10 |
| IL105522A0 (en) | 1993-08-18 |
| BR9306293A (en) | 1998-06-30 |
| NZ252710A (en) | 1996-10-28 |
| RU94045934A (en) | 1996-10-10 |
| AU669013B2 (en) | 1996-05-23 |
| JPH07506744A (en) | 1995-07-27 |
| CZ262294A3 (en) | 1995-05-17 |
| GB2280371A (en) | 1995-02-01 |
| KR950701193A (en) | 1995-03-23 |
| FI945035A0 (en) | 1994-10-26 |
| HUT71647A (en) | 1996-01-29 |
| BG99133A (en) | 1995-05-31 |
| CA2118516A1 (en) | 1993-11-11 |
| ZA932956B (en) | 1994-08-11 |
| EP0637918A1 (en) | 1995-02-15 |
| AU5155293A (en) | 1993-11-29 |
| GB9303841D0 (en) | 1993-04-14 |
| FI945035A (en) | 1994-10-26 |
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