CN104326170A - Photocatalytic air conditioning package technology - Google Patents
Photocatalytic air conditioning package technology Download PDFInfo
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- CN104326170A CN104326170A CN201410439303.3A CN201410439303A CN104326170A CN 104326170 A CN104326170 A CN 104326170A CN 201410439303 A CN201410439303 A CN 201410439303A CN 104326170 A CN104326170 A CN 104326170A
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- Prior art keywords
- bag
- photocatalysis
- food
- catalyst
- carrier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Packages (AREA)
- General Preparation And Processing Of Foods (AREA)
Abstract
The invention discloses a photocatalytic air conditioning package technology. The technology si characterized in that alcohol is used as a substrate, and the alcohol and oxygen in a package bag (container) generate photocatalytic reaction under the actions of ultraviolet light and catalyst to generate carbon dioxide and acid matters, so the content of the oxygen in the package bag (container) is reduced, the growth of microorganisms and the deterioration of foods due to oxidizing are effectively inhibited, the storage stability of food is improved, and the storage period of the food is extended; in addition, a photocatalytic bag is made of food-level raw material, so after the photocatalytic bag is eaten due to carelessness, any hazard is not caused, and the safety is high; the technology is used for the air conditioning package of meat and food package bags (containers), and can also be used for the air conditioning package of foods in cold chain logistic systems, such as refrigeration storages.
Description
Technical field
The present invention relates to a kind of controlled atmospheric packing technology, particularly relate to a kind of photocatalysis controlled atmospheric packing technology, belong to food packaging applications.
Background technology
The Main Function of packaging for foodstuff guarantees in the circulation process of food from factory to customer, disturb from the foeign element such as biology, chemistry, physics, keep food quality in long-term storage and transportation not occur or lessly to change, guaranteeing Safety of Food Quality.But the nutritive peculiarity that food has makes it suffer the infringement of germ unavoidably in storage, this causes food can not the major reason of long term storage.
The reason causing germ to grow in food except sterilization thoroughly except, also have substantial connection with the content of oxygen in the water activity of food, surrounding environment.Wherein oxygen not only can promote microbial growth, but also the oxidation of fat in food, the destruction of vitamin and amino acid whose chemical change may be caused, finally cause nutritive value of food and storage stability to reduce, oxygen can also aggravate food brown stain in addition.Therefore, the oxygen content in minimizing packaging for foodstuff, the gas componant in the bag that changes package (container), can suppress the microbial activity in food and the loss preventing food nutrient composition, and then play the preservation term and storage stability that extend food.
In packaging for foodstuff, conventional deoxidation method is with the oxygen generation chemical reaction in the oxidizable compositions such as iron powder, ammonium chloride, zinc, aluminium and packaging bag (container), to play the effect of deoxidation.But this method of deoxidation has the participation of metallic compound, by chemical method deoxidation mostly, resultant of reaction is also compound human body being had to certain injury, therefore the printed words of " not edible " must be marked on deoxidizer packing bag, but the potential danger that still unavoidably illiterate child or adult eat by mistake or abuse etc. causes.Therefore be necessary to develop a kind of new deoxidation air conditioning technology, to solve above-mentioned potential safety hazard.
Summary of the invention
The object of the present invention is to provide a kind of photocatalysis controlled atmospheric packing technology, this packing technique both can ensure the stability of food storage, can improve again the safety of controlled atmospheric packing.
For achieving the above object, photocatalysis controlled atmospheric packing technology provided by the invention comprises the steps:
(1) preparation of photocatalysis bag
A. the mixing of catalyst and carrier: be taken as the food-level titanium dioxide powder 0.1 ~ 0.5g into catalyst and the polysaccharide 80 ~ 100g as carrier, mixed;
B. ethanol solidification: add the food-grade ethanol accounting for mixture quality 35 ~ 45% (m/m) in the compound of catalyst and carrier, mediate fast, the compound of ethanol and catalyst and carrier is formed and evenly mediates body;
C. granulation: be graininess or broken section of shape by the machine-shaping of above-mentioned kneading body, dries the screening of rear use 6 ~ 8 mesh sieve, collects screenings and namely obtains photocatalytic particle;
D. pack: above-mentioned photocatalytic particle loaded by metering and which is provided with in the transparent plastic bag of breather hole, obtained photocatalysis bag, photocatalysis bag, if do not used immediately, should be placed in lucifuge place freezing (less than-18 DEG C);
(2) packaging of photocatalysis bag and food: food and photocatalysis bag to be loaded at ambient pressure in the complex film food pack of whole printing opacity or partial light permeability and to seal, photocatalysis bag is positioned at the printing opacity place of packaging bag, for light activated food, can coated designs be adopted to make it light tight the film at food position;
(3) photocatalysis controlled atmosphere: adopt 20 ~ 50W uviol lamp, irradiate photocatalysis bag 30 ~ 70min through outer packaging bag, the distance of uviol lamp and packaging bag is 3 ~ 7mm.
Further, described in step (1) a, polysaccharide is made up of the raw material of following percent by weight: starch 80 ~ 90%, xanthans 5 ~ 10%, konjac glucomannan 5 ~ 10%.
Further, described in step (1) a, the purity of food-grade ethanol is not less than 95%.
Further, metering described in step (1) d is every bag of 20 ~ 50g.
Further, join a photocatalysis bag by every 150 ~ 300g food in step (2) and pack, the size of photocatalysis bag was determined according to the shelf-life of food.
The present invention utilizes ethanol that the feature of oxidizing reaction occurs under catalyst and illumination condition, after food pack (container) sealing, adopt luminescence method, impel oxidation of ethanol and consume the oxygen in packaging bag (container), gaseous compound simultaneously by generating, the gas composition of changing package in bag (container), so effectively suppress growth of microorganism and food because of oxidation cause rotten, improve the stability of food storage and extend the preservation term of food.In addition, photocatalysis bag of the present invention all adopts food grade materials to make, and can not cause any danger after eating by mistake, and compared with existing deoxidation reagent, safety is high.
The present invention both can be used for the controlled atmospheric packing of meat and varieties of food items packaging bag (container), also can be used for the controlled atmospheric packing of food in the Cold Chain Logistics systems such as cold store.
Detailed description of the invention
In order to understand the present invention better, below in conjunction with specific embodiment, the present invention is described in further detail, but protection scope of the present invention is not limited thereto.
The controlled atmospheric packing of embodiment 1 dried pork
(1) preparation of photocatalysis bag
A. the mixing of catalyst and carrier: be taken as the food-level titanium dioxide powder 0.2g into catalyst and the polysaccharide mixture 80g as carrier, it mixed with V-Mixer, described polysaccharide mixture is made up of the raw material of following percent by weight: starch 83%, xanthans 8%, konjac glucomannan 9%;
B. ethanol solidification: add the food-grade ethanol (purity 95%) accounting for mixture quality 39% (m/m) in the compound of catalyst and carrier, mediate fast, the compound of ethanol and catalyst and carrier is formed and evenly mediates body;
C. granulation: by above-mentioned kneading body through oodle maker compressing tablet, slitting, is shaped to the wide and high strip being 1.5mm, dries rear folding broken, with 8 mesh sieve screenings, collects screenings and namely obtains photocatalytic particle;
D. pack: above-mentioned photocatalytic particle loaded by every bag of 20g and which is provided with in the transparent plastic bag of breather hole (diameter 0.1mm), obtained photocatalysis bag, photocatalysis bag, if do not used immediately, should be placed in-18 DEG C of Storage in refrigerator;
(2) packaging of photocatalysis bag and dried pork: by dried pork 200g and a photocatalysis bag (20g) at ambient pressure together with to load in the complex film food pack of printing opacity and seal;
(3) photocatalysis controlled atmosphere: adopt 20W uviol lamp, irradiate photocatalysis bag 40min through outer packaging bag, the distance of uviol lamp and packaging bag is 4mm.
The controlled atmospheric packing of the cold fresh beef of embodiment 2
A. the mixing of catalyst and carrier: be taken as the food-level titanium dioxide powder 0.4g into catalyst and the polysaccharide mixture 95g as carrier, it mixed with hand, described polysaccharide mixture is made up of the raw material of following percent by weight: starch 90%, xanthans 5%, konjac glucomannan 5%;
B. ethanol solidification: add the food-grade ethanol (purity 95%) accounting for mixture quality 43% (m/m) in the compound of catalyst and carrier, mediate fast, the compound of ethanol and catalyst and carrier is formed and evenly mediates body;
C. granulation: by the granulation of above-mentioned kneading body Squeezinggranulator, particle diameter, between 2.0 ~ 3.4mm, dries rear mistake 6 mesh sieve, collects screenings and namely obtains photocatalytic particle;
D. pack: above-mentioned photocatalytic particle loaded by every bag of 30g and which is provided with in the transparent plastic bag of breather hole (diameter 0.25mm), obtained photocatalysis bag, photocatalysis bag, if do not used immediately, should be placed in-18 DEG C of Storage in refrigerator;
(2) packaging of photocatalysis bag and cold fresh beef: by cold fresh beef 500g and a photocatalysis bag (30g) at ambient pressure together with to load in the complex film food pack of partial light permeability and seal, wherein photocatalysis bag is placed in packaging bag side, this part packaging bag is transparent, and other position of packaging bag makes it opaque by coating;
(3) photocatalysis controlled atmosphere: adopt 40W uviol lamp, irradiate photocatalysis bag 30min through outer packaging bag, the distance of uviol lamp and packaging bag is 6mm.
Claims (5)
1. a photocatalysis controlled atmospheric packing technology, comprises the steps:
(1) preparation of photocatalysis bag
A. the mixing of catalyst and carrier: be taken as the food-level titanium dioxide powder 0.1 ~ 0.5g into catalyst and the polysaccharide 80 ~ 100g as carrier, mixed;
B. ethanol solidification: add the food-grade ethanol accounting for mixture quality 35 ~ 45% (m/m) in the compound of catalyst and carrier, mediate fast, the compound of ethanol and catalyst and carrier is formed and evenly mediates body;
C. granulation: be graininess or broken section of shape by the machine-shaping of above-mentioned kneading body, dries the screening of rear use 6 ~ 8 mesh sieve, collects screenings and namely obtains photocatalytic particle;
D. pack: above-mentioned photocatalytic particle is loaded by metering and which is provided with in the transparent plastic bag of breather hole, obtained photocatalysis bag;
(2) packaging of photocatalysis bag and food: food and photocatalysis bag being loaded at ambient pressure in the complex film food pack of whole printing opacity or partial light permeability and to seal, photocatalysis bag is positioned at the printing opacity place of packaging bag;
(3) photocatalysis controlled atmosphere: adopt 20 ~ 50W uviol lamp, irradiate photocatalysis bag 30 ~ 70min through outer packaging bag, the distance of uviol lamp and packaging bag is 3 ~ 7mm.
2. photocatalysis controlled atmospheric packing technology according to claim 1, is characterized in that: described in step (1) a, polysaccharide is made up of the raw material of following percent by weight: starch 80 ~ 90%, xanthans 5 ~ 10%, konjac glucomannan 5 ~ 10%.
3. photocatalysis controlled atmospheric packing technology according to claim 1, is characterized in that: described in step (1) a, the purity of food-grade ethanol is not less than 95%.
4. photocatalysis controlled atmospheric packing technology according to claim 1, is characterized in that: metering described in step (1) d is every bag of 20 ~ 50g.
5. photocatalysis controlled atmospheric packing technology according to claim 1, is characterized in that: join a photocatalysis bag by every 150 ~ 300g food in step (2) and pack, the size of photocatalysis bag was determined according to the shelf-life of food.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410439303.3A CN104326170B (en) | 2014-08-29 | 2014-08-29 | A kind of photocatalysis controlled atmospheric packing technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410439303.3A CN104326170B (en) | 2014-08-29 | 2014-08-29 | A kind of photocatalysis controlled atmospheric packing technology |
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| CN104326170A true CN104326170A (en) | 2015-02-04 |
| CN104326170B CN104326170B (en) | 2016-08-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10212203A (en) * | 1997-01-30 | 1998-08-11 | Zeon Kasei Co Ltd | Photocatalytic freshness-keeping apparatus |
| CN1559238A (en) * | 2004-02-15 | 2005-01-05 | 云南大学 | Antistalling bactericide for vegetables and fruits prepn. method and use thereof |
| CN102550651A (en) * | 2010-12-30 | 2012-07-11 | 佐贺光触媒环保科技(大连)有限公司 | Photocatalytic fresh fruit storage reservoir capable of decomposing ethylene |
| CN102580783A (en) * | 2012-01-09 | 2012-07-18 | 兰州交通大学 | Method for preparing TiO2/PS/Fe3O4 magnetic nanoparticle photocatalyst |
| US20130295247A1 (en) * | 2009-11-24 | 2013-11-07 | Hussmann Corporation | Table with ethylene scrubber |
-
2014
- 2014-08-29 CN CN201410439303.3A patent/CN104326170B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10212203A (en) * | 1997-01-30 | 1998-08-11 | Zeon Kasei Co Ltd | Photocatalytic freshness-keeping apparatus |
| CN1559238A (en) * | 2004-02-15 | 2005-01-05 | 云南大学 | Antistalling bactericide for vegetables and fruits prepn. method and use thereof |
| CN1270614C (en) * | 2004-02-15 | 2006-08-23 | 云南大学 | Antistalling bactericide for vegetables and fruits prepn. method and use thereof |
| US20130295247A1 (en) * | 2009-11-24 | 2013-11-07 | Hussmann Corporation | Table with ethylene scrubber |
| CN102550651A (en) * | 2010-12-30 | 2012-07-11 | 佐贺光触媒环保科技(大连)有限公司 | Photocatalytic fresh fruit storage reservoir capable of decomposing ethylene |
| CN102580783A (en) * | 2012-01-09 | 2012-07-18 | 兰州交通大学 | Method for preparing TiO2/PS/Fe3O4 magnetic nanoparticle photocatalyst |
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| CN104326170B (en) | 2016-08-24 |
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