CN102096731A - Modified atmosphere packaging design expert system of fruits and vegetables - Google Patents

Modified atmosphere packaging design expert system of fruits and vegetables Download PDF

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Publication number
CN102096731A
CN102096731A CN 201010619031 CN201010619031A CN102096731A CN 102096731 A CN102096731 A CN 102096731A CN 201010619031 CN201010619031 CN 201010619031 CN 201010619031 A CN201010619031 A CN 201010619031A CN 102096731 A CN102096731 A CN 102096731A
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volume
microprocessor
fruits
gas volume
bag film
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CN 201010619031
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Chinese (zh)
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CN102096731B (en
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王娟
王相友
韩鑫
朱继英
刘战丽
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山东理工大学
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Abstract

The invention relates to the field of preservation technology, in particular to a modified atmosphere packaging system. The modified atmosphere packaging design expert system of fruits and vegetables comprises an information input module, a micro-processor system connected with the information input module and a displayer connected with the micro-processor system and comprises the steps of inputting the size parameters of a film bag by utilizing the information input module; calculating the volume of the film bag and then confirming the maximum aeration volume of the film bag by utilizing the micro-processor system; inputting the packed weight and the initial gas volume by utilizing the information input module; and confirming the packed weight and the initial gas volume when judging that the sum of the volume of main body of the fruits and the vegetables and the initial gas volume is not more than the maximum aeration volume by utilizing the micro-processor system. By utilizing the technical scheme, the defects of big workload, more time-consuming and high cost of an experiment are overcome and the modified atmosphere packaging of the fruits and the vegetables is judged through autonomously inputting the known packaging parameters and imitating the packaging effect by a user to confirm the suitable packed weight and the initial gas volume.

Description

Fruit and vegetable air-conditioning package design expert system
Technical field
The present invention relates to the preservation technique field, relate in particular to a kind of controlled atmospheric packing system.
Background technology
Controlled atmospheric packing technology (MAP) is current advanced Fresh-keeping Packaging for Fruits and Vegetables method, and its principle is by adopting artificial or natural accumulative means, utilize the respiration and the gas penetration potential of packing film of fruits and vegetables in the packing, and the interior atmosphere of the environment that changes package is to form a kind of low O 2, high CO 2Microenvironment, suppress the fruits and vegetables respiration to reach, delay the fruits and vegetables metabolic processes, prolong the purpose of its storage period.
In recent years, the controlled atmospheric packing technology is widely used in the preservation technique of fruits and vegetables, and has accumulated certain experience.But these researchs mainly are according to researcher's experience and estimate to come the initial option packing film, carry out the controlled atmospheric packing experiment again, final definite suitable manner of packing, make like this establishment of controlled atmospheric packing condition consuming time many, expense is big, the dispersiveness of research is very big, and the poor reproducibility of storage effect, lack unified theoretical direction, therefore cause the controlled atmospheric packing of fruits and vegetables can not excellent popularization and application.
Summary of the invention
The object of the present invention is to provide a kind of fruit and vegetable air-conditioning package design expert system, to solve the problems of the technologies described above.
Technical matters solved by the invention can realize by the following technical solutions:
Fruit and vegetable air-conditioning package design expert system is characterized in that, comprises a MIM message input module, and described MIM message input module connects a microprocessor system, and described microprocessor system connects a display;
Described MIM message input module is in order to the dimensional parameters of the bag film of input packing fruits and vegetables main body; The volume of the described bag film of described microprocessor system-computed, and then the maximum filled volume of definite described bag film;
Described MIM message input module is also in order to import packed weight and the initial gas volume that needs controlled atmospheric packing in the described fruits and vegetables main body; Described microprocessor system obtains described packed weight the volume of described fruits and vegetables main body divided by the average density of fruits and vegetables main body;
When described microprocessor system judges the volume of described fruits and vegetables main body and described initial gas volume sum greater than described maximum filled volume, point out by described display, and require to import described packed weight and initial gas volume by described MIM message input module again;
When described microprocessor system judges the volume of described fruits and vegetables main body and described initial gas volume sum and is not more than described maximum filled volume, determine packed weight and initial gas volume.
The present invention has overcome in fruits and vegetables MAP design process, big, consuming time many, the defective that expense is big of experimental work amount, the present invention can utilize the Matlab language program, set up expert system, utilize fruits and vegetables respiratory rate model, by the user from primary input known package parameter, dummy packages effect, the fruit and vegetable air-conditioning packing is judged, determined the packed weight and the initial gas volume that are fit to.That the present invention has is simple to operate, need not experiment, the time saving and energy saving remarkable advantage that waits.
The dimensional parameters of described bag film comprises length and width, thickness, the air transmission coefficient of described bag film.
Described fruits and vegetables main body can adopt the agaricus bisporus main body.Agaricus bisporus is a kind of fruits and vegetables that are used for controlled atmospheric packing of using always.
Described MIM message input module is also in order to input storage time and reserve temperature.
Described microprocessor system is with the O in the described bag film 2Volume fraction, CO 2Volume fraction and volume of gas be the form of change curve to scheme in time, shows by described display.
O in the described bag film 2Volume fraction, CO 2Volume fraction and volume of gas obtain by separating following differential equation group:
dy O 2 dt = - y O 2 t V S t [ A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ] + A LV S t P O 2 ( x O 2 P 0 - y O 2 P ) - r O 2 W V S t ;
dy CO 2 dt = - y CO 2 t V S t [ A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ] + A LV S t p O 2 ( x CO 2 P 0 - y CO 2 P ) + r CO 2 W V S t ;
dy N 2 dt = - y N 2 t V S t [ A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ] + A LV S t p N 2 ( x N 2 P 0 - y N 2 P ) ;
dV S dt = A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ;
Wherein, r O 2 = exp ( 16.705 - 3325.9 / T ) y O 2 1.92 + ( 1 + y CO 2 / 21.16 ) y O 2 ; r CO 2 = exp ( 16.812 - 3402.2 / T ) y O 2 0.99 + ( 1 + y CO 2 / 27.11 ) y O 2 ;
In the formula, Be O in the t moment bag film 2, CO 2, N 2Volume fraction; Be O 2, CO 2, N 2Gas transmission coefficient; Be O in the storage environment 2, CO 2, N 2Volume fraction; T is the time interval; V SVolume of gas for bag film; L is the thickness of bag film; A be bag film surface area; I is expression subscript O 2, CO 2, N 2P, P0 are the inside and outside gas pressure intensity of bag film; W is a packaging quality; O for the fruits and vegetables main body 2Respiratory rate; CO for the fruits and vegetables main body 2Production rate; T is a reserve temperature.
If the gas volume in the bag film diminishes, can make O 2Content is very few, and causing agaricus bisporus generation anaerobic respiration, so the gas volume sum behind the volume of agaricus bisporus main body and the described storage time also needs compare with minimum gas volume.
The described minimum gas volume of described microprocessor system-computed, calculation equation is as follows:
Vmin=r×W×t/y O2
In the formula, Vmin is described minimum gas volume; R is the respiratory rate of agaricus bisporus; W is described packed weight; T is described storage time; y O2Be described O 2Volume fraction;
Suppose that the agaricus bisporus respiratory rate is 100mLkg -1h -1, O 2Volume fraction is 10% o'clock, the O in the bag film 2Volume can be minimum gas volume, i.e. r=100mLkg for the gas volume of agaricus bisporus respiration consumption 1h -1h -1, y O2=10%, during t=1h, Vmin=1000W;
Gas volume sum behind the volume of described agaricus bisporus main body and the described storage time is during less than described minimum gas volume, described microprocessor system is pointed out by described display, and require to import described packed weight and initial gas volume by described MIM message input module again, to determine packed weight and initial gas volume once more;
When the volume of described agaricus bisporus main body and the gas volume sum behind the described storage time were not less than described minimum gas volume, described microprocessor system determined packed weight and initial gas volume.
The O in the parameter judges in described microprocessor system 2Volume fraction is as described O 2Volume fraction is less than 5% o'clock, and described microprocessor system is pointed out by described display, and requires to import described packed weight and initial gas volume by described MIM message input module again, to determine packed weight and initial gas volume once more;
As described O 2Volume fraction is not less than at 5% o'clock, the O of described microprocessor system after with described packed weight, initial gas volume and described storage time 2Volume fraction is presented on the described display.
In the fruit and vegetable air-conditioning packaging process, can make and obtain low O in the bag film by modes such as raising packed weight, the surface area that reduces bag film, raising reserve temperature, reduction film gas venting systems 2High CO 2The gas volume mark.At duration of storage, O 2Volume fraction can not be low excessively, need reach more than 5%, to avoid anaerobic respiration.The present invention has adopted packed weight and initial gas volume to regulate mutually, obtains low O 2High CO 2The gas volume mark so that reach best storage environment.
Described microprocessor system also connects a voice cue module.By the mode of voice prompting mode in conjunction with display prompts, dual prompting is so that the user in time imports packed weight and initial gas volume.
Beneficial effect: owing to adopt technique scheme, the present invention has originally overcome in fruits and vegetables MAP design process, big, consuming time many, the defective that expense is big of experimental work amount, utilize fruits and vegetables respiratory rate model, by the user from primary input known package parameter, the dummy packages effect is judged the fruit and vegetable air-conditioning packing, determines the packed weight and the initial gas volume that are fit to.That the present invention has is simple to operate, need not experiment, the time saving and energy saving remarkable advantage that waits.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is a circuit diagram of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, further set forth the present invention below in conjunction with concrete diagram.
With reference to Fig. 1, Fig. 2, fruit and vegetable air-conditioning package design expert system comprises MIM message input module 1, and MIM message input module 1 connects microprocessor system 2, and microprocessor system 2 connects display 3; MIM message input module 1 is in order to the dimensional parameters of the bag film of input packing fruits and vegetables main body, MIM message input module 1 can also be imported other information such as storage time and reserve temperature as required, and the dimensional parameters of bag film comprises the length and width of bag film, thickness, air transmission coefficient.The volume of bag film calculates in microprocessor system 2, and then the maximum filled volume Vmax of definite bag film; MIM message input module 1 is also in order to need the packed weight W and the initial gas volume V of controlled atmospheric packing in the input fruits and vegetables main body; Microprocessor system 2 obtains packed weight W the volume of fruits and vegetables main body divided by the average density ρ of fruits and vegetables main body; When microprocessor system 2 judges the volume of fruits and vegetables main body and initial gas volume V sum greater than maximum filled volume Vmax,, and require again by MIM message input module 1 input packed weight W and initial gas volume V by display 3 row promptings; When microprocessor system 2 judges the volume of fruits and vegetables main body and initial gas volume V sum and is not more than maximum filled volume Vmax, determine packed weight W and initial gas volume V.The present invention has overcome in the MAP design process, big, consuming time many, the defective that expense is big of experimental work amount, the present invention can utilize the Matlab language program, set up expert system, utilize fruits and vegetables respiratory rate model, by the user from primary input known package parameter, dummy packages effect, the fruit and vegetable air-conditioning packing is judged, determined the packed weight W and the initial gas volume V that are fit to.That the present invention has is simple to operate, need not experiment, the time saving and energy saving remarkable advantage that waits.Microprocessor system 2 also connects voice cue module 4.By the mode of voice prompting mode in conjunction with display 3 promptings, dual prompting is so that the user in time imports packed weight W and initial gas volume V.
Microprocessor system 2 is with the O in the bag film 2Volume fraction, CO 2Volume fraction and volume of gas be the form of change curve to scheme in time, shows by display 3.Before storage time, the O in the bag film 2Volume fraction, CO 2Volume fraction and volume of gas obtain by separating following differential equation group:
dy O 2 dt = - y O 2 t V S t [ A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ] + A LV S t P O 2 ( x O 2 P 0 - y O 2 P ) - r O 2 W V S t ;
dy CO 2 dt = - y CO 2 t V S t [ A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ] + A LV S t p O 2 ( x CO 2 P 0 - y CO 2 P ) + r CO 2 W V S t ;
dy N 2 dt = - y N 2 t V S t [ A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ] + A LV S t p N 2 ( x N 2 P 0 - y N 2 P ) ;
dV S dt = A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ;
Wherein, r O 2 = exp ( 16.705 - 3325.9 / T ) y O 2 1.92 + ( 1 + y CO 2 / 21.16 ) y O 2 ; r CO 2 = exp ( 16.812 - 3402.2 / T ) y O 2 0.99 + ( 1 + y CO 2 / 27.11 ) y O 2 ;
In the formula, Be O in the t moment bag film 2, CO 2, N 2Volume fraction; Be O 2, CO 2, N 2Gas transmission coefficient; Be O in the storage environment 2, CO 2, N 2Volume fraction; T is the time interval; V SGas volume for bag film; L is the thickness of bag film; A be bag film surface area; I is expression subscript O 2, CO 2, N 2P, P0 are the inside and outside gas pressure intensity of bag film; W is a packaging quality; O for the fruits and vegetables main body 2Respiratory rate; CO for the fruits and vegetables main body 2Production rate; T is a reserve temperature.
The fruits and vegetables main body can adopt the agaricus bisporus main body.Microprocessor system 2 calculates the volume of agaricus bisporus main body with the average density ρ of packed weight W divided by the agaricus bisporus main body.Minimum gas volume calculates in microprocessor system 2, and calculation equation is as follows:
Vmin=r×W×t/y O2
In the formula, Vmin is minimum gas volume;
R is the respiratory rate of agaricus bisporus;
W is a packed weight;
T is a storage time;
y O2Be O 2Volume fraction.
Suppose that the agaricus bisporus respiratory rate is 100mLkg -1h -1, O 2Volume fraction is 10% o'clock, the O in the bag film 2Volume can be minimum gas volume, i.e. r=100mLkg for the gas volume of agaricus bisporus respiration consumption 1h -1h -1, y O2=10%, during t=1h, Vmin=1000W.
If the gas volume in the bag film diminishes, can make O 2Content is very few, and causing agaricus bisporus generation anaerobic respiration, so the volume of agaricus bisporus main body and the gas volume sum behind the storage time also need compare with minimum gas volume: the volume of agaricus bisporus main body and the gas volume V behind the storage time tSum is during less than minimum gas volume, and microprocessor system 2 is pointed out by display 3, and requires again by MIM message input module 1 input packed weight W and initial gas volume V, to determine packed weight W and initial gas volume V once more; As the volume of agaricus bisporus main body and the gas volume V behind the storage time tWhen sum was not less than minimum gas volume Vmin, microprocessor system 2 determined packed weight W and initial gas volume V, and microprocessor system 2 can be presented at packed weight W and initial gas volume V on the display 3, for checking.
O in the parameter judges in microprocessor system 2 2Volume fraction is worked as O 2Volume fraction was less than 5% o'clock, and microprocessor system 2 is pointed out by display 3, and required again by MIM message input module 1 input packed weight W and initial gas volume V, to determine packed weight W and initial gas volume V once more; Work as O 2Volume fraction is not less than at 5% o'clock, the O of microprocessor system 2 after with packed weight W, initial gas volume V and storage time 2Volume fraction y O2Be presented on the display 3.The present invention has adopted packed weight W and initial gas volume V to regulate mutually, obtains the gas volume mark of low oxygen high carbon dioxide, so that reach best storage environment.
With reference to Fig. 1, the present invention can adopt the Matlab language program, sets up the expert system of agaricus bisporus controlled atmospheric packing, and the present invention can adopt following steps to realize correct packed weight W of selection and initial gas volume V.
1) input known parameters: by the parameter of MIM message input module 1 input bag film, as the length and width of bag film, so that calculate the volume of bag film; The thickness of bag film, air transmission coefficient are so that calculate the Air permenbility of bag film; Storage time t and reserve temperature T.
2) calculate the maximum filled volume Vmax of bag film.
3) import imaginary parameter: import one group of packed weight W and initial gas volume V.
4) judge whether W/ ρ+V>Vmax;
When W/ ρ+V>Vmax, prompt statement returns step 3), re-enters one group of imagination parameter;
When W/ ρ+V<=Vmax, continue next step.
5) obtain gas volume mark and volume of gas, by separating after a differential equation group obtains storage time t O in the bag film 2, CO 2, N 2Gas volume mark y O2, y CO2, y N2, gas volume V t
6) output simulation result, i.e. O in the bag film 2, CO 2Volume fraction and gas volume are with the change curve of storage time.
7) judge whether W/ ρ+V t<Vmin;
As W/ ρ+V tDuring<Vmin, prompt statement returns step 3), re-enters one group of imagination parameter;
As W/ ρ+V tDuring>=Vmin, continue next step.
8) judge whether y O2<5%;
Work as y O2<5% o'clock, prompt statement returned step 3), re-entered one group of imagination parameter;
Work as y O2, continue next step at>=5% o'clock.
9) determine final packed weight W and initial gas volume V, and the output result.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (8)

1. fruit and vegetable air-conditioning package design expert system is characterized in that, comprises a MIM message input module, and described MIM message input module connects a microprocessor system, and described microprocessor system connects a display;
Described MIM message input module is in order to the dimensional parameters of the bag film of input packing fruits and vegetables main body; The volume of the described bag film of described microprocessor system-computed, and then the maximum filled volume of definite described bag film;
Described MIM message input module is also in order to import packed weight and the initial gas volume that needs controlled atmospheric packing in the described fruits and vegetables main body; Described microprocessor system obtains described packed weight the volume of described fruits and vegetables main body divided by the average density of fruits and vegetables main body;
When described microprocessor system judges the volume of described fruits and vegetables main body and described initial gas volume sum greater than described maximum filled volume, point out by described display, and require to import described packed weight and initial gas volume by described MIM message input module again;
When described microprocessor system judges the volume of described fruits and vegetables main body and described initial gas volume sum and is not more than described maximum filled volume, determine packed weight and initial gas volume.
2. fruit and vegetable air-conditioning package design expert system according to claim 1 is characterized in that the dimensional parameters of described bag film comprises the length and width of described bag film, thickness, air transmission coefficient.
3. fruit and vegetable air-conditioning package design expert system according to claim 1 is characterized in that, described MIM message input module is also in order to input storage time and reserve temperature.
4. fruit and vegetable air-conditioning package design expert system according to claim 3 is characterized in that, described microprocessor system is before the described storage time, the O in the described bag film 2Volume fraction, CO 2Volume fraction and volume of gas be the form of change curve to scheme in time, shows by described display; Before the described storage time, the O in the described bag film 2Volume fraction, CO 2Volume fraction and volume of gas obtain by separating following differential equation group:
dy O 2 dt = - y O 2 t V S t [ A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ] + A LV S t P O 2 ( x O 2 P 0 - y O 2 P ) - r O 2 W V S t ;
dy CO 2 dt = - y CO 2 t V S t [ A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ] + A LV S t p O 2 ( x CO 2 P 0 - y CO 2 P ) + r CO 2 W V S t ;
dy N 2 dt = - y N 2 t V S t [ A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ] + A LV S t p N 2 ( x N 2 P 0 - y N 2 P ) ;
dV S dt = A L Σ p i ( x i P 0 - y i P ) + ( r CO 2 - r O 2 ) W ;
Wherein, r O 2 = exp ( 16.705 - 3325.9 / T ) y O 2 1.92 + ( 1 + y CO 2 / 21.16 ) y O 2 ; r CO 2 = exp ( 16.812 - 3402.2 / T ) y O 2 0.99 + ( 1 + y CO 2 / 27.11 ) y O 2 ;
In the formula, Be O in the t moment bag film 2, CO 2, N 2Volume fraction; Be O 2, CO 2, N 2Gas transmission coefficient; Be O in the storage environment 2, CO 2, N 2Volume fraction; T is the time interval; V SVolume of gas for bag film; L is the thickness of bag film; A be bag film surface area; I is expression subscript O 2, CO 2, N 2P, P0 are the inside and outside gas pressure intensity of bag film; W is a packaging quality; O for the fruits and vegetables main body 2Respiratory rate; CO for the fruits and vegetables main body 2Production rate; T is a reserve temperature.
5. according to claim 3 or 4 described fruit and vegetable air-conditioning package design expert systems, it is characterized in that described fruits and vegetables main body adopts the agaricus bisporus main body.
6. fruit and vegetable air-conditioning package design expert system according to claim 5 is characterized in that, the described minimum gas volume of described microprocessor system-computed, and calculation equation is as follows:
Vmin=r×W×t/y O2
In the formula, Vmin is described minimum gas volume; R is the respiratory rate of agaricus bisporus; W is described packed weight; T is described storage time; y O2Be described O 2Volume fraction;
Set r=100mL kg -1h -1, t=1h, y O2=10%, Vmin=1000W then;
Gas volume sum behind the volume of described agaricus bisporus main body and the described storage time is during less than described minimum gas volume, described microprocessor system is pointed out by described display, and require to import described packed weight and initial gas volume by described MIM message input module again, to determine packed weight and initial gas volume once more;
When the volume of described agaricus bisporus main body and the gas volume sum behind the described storage time were not less than described minimum gas volume, described microprocessor system determined described packed weight and initial gas volume.
7. fruit and vegetable air-conditioning package design expert system according to claim 6 is characterized in that, the O in the parameter judges in described microprocessor system 2Volume fraction is as described O 2Volume fraction is less than 5% o'clock, and described microprocessor system is pointed out by described display, and requires to import described packed weight and initial gas volume by described MIM message input module again, to determine packed weight and initial gas volume once more;
As described O 2Volume fraction is not less than at 5% o'clock, the O of described microprocessor system after with described packed weight, initial gas volume and described storage time 2Volume fraction is presented on the described display.
8. fruit and vegetable air-conditioning package design expert system according to claim 1 is characterized in that, described microprocessor system also connects a voice cue module.
CN 201010619031 2010-12-31 2010-12-31 Modified atmosphere packaging design expert system of fruits and vegetables CN102096731B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3153027A1 (en) 2015-10-09 2017-04-12 Camen Quimica, S.A. de C.V. Bag for package horticultural products

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Publication number Priority date Publication date Assignee Title
CN101766209A (en) * 2009-01-07 2010-07-07 乔维汉 Productive technology for preserving and processing fruits and vegetables

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Publication number Priority date Publication date Assignee Title
CN101766209A (en) * 2009-01-07 2010-07-07 乔维汉 Productive technology for preserving and processing fruits and vegetables

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Publication number Priority date Publication date Assignee Title
EP3153027A1 (en) 2015-10-09 2017-04-12 Camen Quimica, S.A. de C.V. Bag for package horticultural products

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