CN106777765A - Easily thermal sterilization runout compensation method - Google Patents

Easily thermal sterilization runout compensation method Download PDF

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Publication number
CN106777765A
CN106777765A CN201611268874.0A CN201611268874A CN106777765A CN 106777765 A CN106777765 A CN 106777765A CN 201611268874 A CN201611268874 A CN 201611268874A CN 106777765 A CN106777765 A CN 106777765A
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temperature
sterilization
time
sterilization kettle
kettle
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CN106777765B (en
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刘东红
周建伟
丁甜
吕瑞玲
叶兴乾
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • 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
    • A23L3/003—Control or safety devices for sterilisation or pasteurisation systems
    • 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
    • A23L3/10—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating materials in packages which are not progressively transported through the apparatus

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Nutrition Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Geometry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Evolutionary Computation (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

The invention discloses a kind of easily thermal sterilization runout compensation method, comprise the following steps：Record sterilization kettle temperature history；When sterilization kettle temperature deviates in sterilization process, often occur once, this sterilization kettle is recorded in time and is offset to the minimum temperature T for reachingDiAnd the holding temperature T that sterilization kettle temperature recovery sets to original planRThe deviation time Δ t of Shi Fashengi；When sterilization kettle temperature recovery to original plan design temperature TRWhen, T in killing bacterium technological procedureDiInsulation sterilizing time t during temperatureDi, so as to calculate correction compensation time tC；When in holding temperature TRUnder insulation sterilizing time extend correction compensation time tCWhen, enter cooling stage by original program.

Description

Easily thermal sterilization runout compensation method
Technical field
The present invention relates to prepackaged food thermal sterilization technical field, more particularly to when occurrence temperature deviates in sterilization process Compensation method.
Background technology
Prepackaged food is a kind of method for preserving of science, it by various seal foods in a reservoir, it is heat-treated, kill Most microorganisms are gone out or inhibit, while the subintrusion again of external microbe is prevented again, so as to reach business at normal temperatures Industry germ-free condition, and it is able to long period preserved food.
The main purpose of food heat sterilization is to kill pathogenic bacteria, toxigenic bacterium, the spoilage organisms in food, and suppression is possible to The regrowth breeding of surviving microorganisms, enables food at room temperature, and the preservation long period will not ruin, it is ensured that consumer uses Security.But then, heat sterilization process can also make nutrient inferior solution in food, and influence food mouthfeel, local flavor cause The nutrition of food and quality decline.Thermal sterilization is always a key link in industry production prepackaged food process, It directly influences the quality and security of food.Heat-sterilization process must carry out well-designed, calculating and strict implement, make this During product reach predetermined bactericidal effect, kill microorganism, commercial sterilization is reached, to ensure public food safety.
Thermal sterilization is divided into intensification, insulation, cooling three phases.Sterilization stage is being incubated, often inevitably Have a power failure, the thermal source accidental interruption such as steam pipework or valve blockage are closed or control system failure fall cause sterilization kettle temperature with There is situation about deviateing in default sterilization temperature curve, and causes bactericidal effect in Preset Time to be unable to reach default security.Industry There is such case in production in boundary, during often through recalculating sterilization as sterilization by minimum temperature when occurring deviateing Between, and accordingly extension sterilizing time used as correction, the correction time is specially under looking into minimum temperature during deviateing as sterilization temperature Sterilizing time and original plan sterilization temperature under sterilizing time difference.The also with good grounds computer simulation cold spot temperature of nearest application Degree, calculates the methods such as sterilizing value in real time.Although although these methods can guarantee that the security of sterilization, food is often resulted in Excessive sterilization, so as to influence quality and the nutrition of food.Also have been reported that and obtained by the way of computer control sterilization kettle both at home and abroad The method of sterilized value parameter in real time is obtained to carry out correction operation, but this method is come for domestic vast the food enterprises Say the improvement cost, it is necessary to larger.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of easily thermal sterilization runout compensation method, and the method is than existing There is the sterilized method for correcting error generally used in production process to save sterilizing time, energy saving to consume, moreover it is possible to improve food quality, And without the expensive computer controls of Price-dependent.
In order to solve the above-mentioned technical problem, the present invention provides a kind of easily thermal sterilization runout compensation method, including as follows Step：
(1) record (using existing conventional method record) sterilization kettle temperature history；
(2) when sterilization kettle temperature deviates in sterilization process, often occur once, this sterilization kettle is recorded in time inclined From the minimum temperature T for reachingDiAnd the holding temperature T that sterilization kettle temperature recovery sets to original planRThe deviation time Δ of Shi Fasheng ti；
Remarks explanation：As long as occurring in that holding temperature of the actual temperature less than setting in the original plan, belong to and deviate；
(3) when sterilization kettle temperature recovery to original plan design temperature TRWhen, T in killing bacterium technological procedureDiGuarantor during temperature Warm sterilizing time tDi, so as to calculate correction compensation time tC；
In formula, tRFor original plan insulation sterilizing time (is in original plan holding temperature TRUnder operating mode needed for completion sterilization process The soaking time wanted), for the number of times of occurrence temperature deviation is numbered, (, often a temperature departure, numerical value in i=1,2,3 ... ... to i there is Plus 1), n is the number of times that occurrence temperature deviates altogether；
That is, the calculating thermal sterilization compensation time is incubated and is killed by the corresponding insulation sterilizing time of least deviation temperature and original plan The difference of bacterium time, and deviate time and insulation sterilizing time proportionate relationship in the original plan, both determines；
Remarks explanation：T in process for sterilizing codeDiInsulation sterilizing time t during temperatureDi, it is to be tested according to thermal break-through in advance Sterilization temperature T is incubated in insulation sterilizing time table under each insulation sterilization temperature for obtainingDiCorresponding insulation sterilizing time tDi, unit is min；That is, sterilization experiment is carried out to sterilized article in advance, so as to obtain " in the case where same bactericidal effect is reached, together A kind of sterilized article corresponding sterilizing time under different sterilization temperatures ", it is however generally that, every 1~2 DEG C, setting one is killed Bacterium temperature.This is current routine techniques.
(4) when in holding temperature TRUnder insulation sterilizing time extend correction compensation time tCWhen, enter by original program Cooling stage.
As the improvement of easily thermal sterilization runout compensation method of the invention：In the step (3), if sterilization process In repeatedly occurrence temperature deviate, need to accumulate calculating thermal sterilization compensation the time.
That is, each occurrence temperature is deviateed into corresponding correction and compensates time tCiAdded up, obtained tC, the step (4) For：When in holding temperature TRUnder insulation sterilizing time extend correction compensation time tCWhen, enter cooling rank by original program Section.
As easily thermal sterilization runout compensation further improvements in methods of the invention：
It is offset to the minimum temperature T for reachingDiIt is to be read or recorded by the existing temperature acquisition modes of sterilization kettle；
The described deviation time can be obtained by the instrument of any clocking capability.
Easily thermal sterilization runout compensation method of the invention has advantages below：The present invention is not required to transform existing sterilization kettle Structure, compared to conventional method compensation method save sterilizing time, energy saving, reduce excessive sterilization degree, ensure food peace Conventional correction can also be reduced while full property to food nutrition and the excessive inferior solution of quality.
Brief description of the drawings
Specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is one sterilizing time comparison diagram of experiment；
Fig. 2 is two sterilizing time comparison diagrams of experiment.
Specific embodiment
With reference to specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in This.
Embodiment 1, a kind of easily thermal sterilization runout compensation method, follow the steps below successively：
(1) sterilization kettle temperature history is recorded using existing conventional method；
Above-mentioned existing conventional method is, for example,：Dial type moisture recorder, electric thermo-couple temperature recorder, mercurial thermometer.
(2) when sterilization kettle temperature deviates in sterilization process, often occur once, this sterilization kettle is recorded in time inclined From the minimum temperature T for reachingDiAnd the holding temperature T that sterilization kettle temperature recovery sets to original planRThe deviation time Δ of Shi Fasheng ti；
(3) when sterilization kettle temperature recovery to original plan design temperature TRWhen, T in killing bacterium technological procedureDiGuarantor during temperature Warm sterilizing time tDi, so as to calculate correction compensation time tC；
Deviate temperature Δ t in above-mentioned stepsiAcquisition modes are identical with the existing temperature acquisition modes of sterilization kettle, are offset to what is reached Minimum temperature TDiThermometric instruments with the existing temperature of sterilization kettle are mercurial thermometer, can be mercurial thermometer or other electricity Sub- measuring instrument, without transforming existing disinfection equipment.
(4) when insulation sterilizing time extends tCWhen, enter cooling stage by original program.
Test one, operated according to the methods described of embodiment 1, it is specific as follows：
1), the article that needs carry out sterilization is：Pork luncheon meat (20 DEG C of initial temperature)；This default process for sterilizing is：5min (rises Temperature) -- 60min (insulation sterilizing time TR, the sterilization temperature for setting is 121 DEG C) -- 5min (cooling)；
2), there is the temperature departure of 1 time altogether；It is specific as follows：
NO1, when sterilization stage 20min (i.e. total sterilizing time 25min) is incubated, sterilization temperature in sterilization kettle occurs Deviate, the minimum temperature T of arrivalD1It is 115 DEG C；Deviation time Δ t1It is 10min；
Deviation time Δ t1It is sterilization kettle temperature since less than 121 DEG C to the time for going back up to 121 DEG C again.
3) time t, is compensatedCIt is specific as follows：
It is T to look into insulation sterilizing time when sterilization temperature is 115 DEG CD1=75min, therefore：
4), when insulation sterilizing time extends tCWhen, enter cooling stage by original program.
Specific sterilizing time contrast is as shown in Figure 1.
The properties data of product are as described in Table 1 with the contrast of conventional method after the gained sterilization of above-mentioned experiment one.
The Contrast on effect of the inventive method and conventional method in table 1, experiment one
Method Sterilized total time (min) Sterilizing value F0 (min)
It is default 70 6
The present invention 72.5 6.5
Conventional method 85 14.3
Remarks explanation：Sterilizing value is the data obtained according to thermal break-through experiment, is obtained by bactericidal formula integration.Bactericidal formula It is：This is routine techniques.
Therefore, the present invention has the technical advantage such as short sterilized runout compensation time, energy-conservation, small on food quality influence.
Experiment two,
1), the article that needs carry out sterilization is：Certain low acid beverages (20 DEG C of initial temperature)；This default process for sterilizing is： 3min (intensification) -- 13min (insulation sterilizing time TR, the sterilization temperature for setting is 121 DEG C) -- 3min (cooling)；
2), there is the temperature departure of 2 times altogether；It is specific as follows：
NO1, when sterilization stage 3min (i.e. total sterilizing time 6min) is incubated, sterilization temperature in sterilization kettle occurs inclined From the minimum temperature T of arrivalD1It is 115 DEG C；Deviation time Δ t1It is 3min；
NO2, when sterilization stage 9min (i.e. total sterilizing time 12min) is incubated, sterilization temperature in sterilization kettle occurs Deviate, the minimum temperature T of arrivalD1It is 118 DEG C；Deviation time Δ t1It is 2min；
3) time t, is compensatedCIt is specific as follows：
Look into sterilization temperature be respectively 115 DEG C, 118 DEG C when insulation sterilizing time respectively TD1=23.1min, TD2= 19.2min, therefore
4), when insulation sterilizing time extends tCWhen, enter cooling stage by original program.
Specific sterilizing time contrast is as shown in Figure 2：
The properties data of product are as described in Table 2 after the gained sterilization of above-mentioned experiment one.
The Contrast on effect of table 2, two the inventive method of experiment and conventional method
Method Sterilized total time (min) Sterilizing value F0 (min)
It is default 19 6
The present invention 22.3 7.5
Conventional method 29.1 11.2
Obviously, the inventive method not only ensure that sterilizing value reaches default requirement, and process time is than conventional method significantly Shorten, and because the intensity being heat-treated is big without conventional method, so the nutritional quality of food has obtained preferably retaining.
Finally it should be noted that：Various embodiments above is merely to illustrate technical scheme, rather than its limitations；To the greatest extent Pipe has been described in detail with reference to each embodiment of signature to the present invention, it will be understood by those within the art that：Its according to The technical scheme described in each embodiment in preceding place can so be modified, or which part or all technical characteristic are entered Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from invention embodiment scheme Scope.

Claims (3)

1. easily thermal sterilization runout compensation method, it is characterised in that comprise the following steps：
(1) sterilization kettle temperature history is recorded；
(2) when sterilization kettle temperature deviates in sterilization process, often occur once, this sterilization kettle is recorded in time and is offset to The minimum temperature T for reachingDiAnd the holding temperature T that sterilization kettle temperature recovery sets to original planRThe deviation time Δ t of Shi Fashengi；
(3) when sterilization kettle temperature recovery to original plan design temperature TRWhen, T in killing bacterium technological procedureDiInsulation during temperature is killed Bacterium time tDi, so as to calculate correction compensation time tC；
t c = Σ i = 1 n ( t D i - t R ) ( Δt i t R )
In formula, tRFor original plan insulation sterilizing time (is in original plan holding temperature TRUnder operating mode required for completion sterilization process Soaking time), i is the number of times numbering that occurrence temperature deviates, and n is the number of times that occurrence temperature deviates altogether；
(4) when in holding temperature TRUnder insulation sterilizing time extend correction compensation time tCWhen, enter by original program and cool down Stage.
2. easily thermal sterilization runout compensation method according to claim 1, it is characterised in that：In the step (3), when Multiple occurrence temperature deviates in sterilization process, need to accumulate the calculating thermal sterilization compensation time.
3. easily thermal sterilization runout compensation method according to claim 1, it is characterised in that：
It is offset to the minimum temperature T for reachingDiIt is to be read or recorded by the existing temperature acquisition modes of sterilization kettle；
The described deviation time can be obtained by the instrument of any clocking capability.
CN201611268874.0A 2016-12-31 2016-12-31 Convenient and fast thermal sterilization runout compensation method Active CN106777765B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110020465A (en) * 2019-03-17 2019-07-16 浙江大学 A kind of analog analysing method of the liquid tinned food heat-sterilization process based on CFD
CN110531799A (en) * 2019-08-13 2019-12-03 浙江大学 A kind of thermal sterilization automatic deviation correction smart box
CN113614020A (en) * 2019-04-17 2021-11-05 大日本印刷株式会社 Method for sterilizing beverage filling device and beverage filling device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1056246A (en) * 1990-05-04 1991-11-20 北京工业大学京天技术装备实验厂 A kind of control method of steam sterilizing time
US20050003064A1 (en) * 2003-03-07 2005-01-06 Hansen Lars Henrik Apparatus and method for pasteurizing products
CN101524178A (en) * 2009-02-05 2009-09-09 孙晓春 Thermal sterilization method of presetting sterilization effect as control objective
CN105611657A (en) * 2015-12-28 2016-05-25 北京小焙科技有限公司 Temperature change based method and device for intelligently compensating heating time and electric oven

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1056246A (en) * 1990-05-04 1991-11-20 北京工业大学京天技术装备实验厂 A kind of control method of steam sterilizing time
US20050003064A1 (en) * 2003-03-07 2005-01-06 Hansen Lars Henrik Apparatus and method for pasteurizing products
CN101524178A (en) * 2009-02-05 2009-09-09 孙晓春 Thermal sterilization method of presetting sterilization effect as control objective
CN105611657A (en) * 2015-12-28 2016-05-25 北京小焙科技有限公司 Temperature change based method and device for intelligently compensating heating time and electric oven

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
周建伟等: "《罐头食品热杀菌工艺仿真平台设计与开发》", 《中国食物与营养》 *
王亮等: "《罐头食品热杀菌过程优化的研究进展》", 《食品工业科技》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110020465A (en) * 2019-03-17 2019-07-16 浙江大学 A kind of analog analysing method of the liquid tinned food heat-sterilization process based on CFD
CN110020465B (en) * 2019-03-17 2020-08-11 浙江大学 Simulation analysis method for liquid canned food heat sterilization process based on CFD
CN113614020A (en) * 2019-04-17 2021-11-05 大日本印刷株式会社 Method for sterilizing beverage filling device and beverage filling device
CN110531799A (en) * 2019-08-13 2019-12-03 浙江大学 A kind of thermal sterilization automatic deviation correction smart box

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