CN100554958C - A kind of method of testing oxygen transmission rate of package bag - Google Patents
A kind of method of testing oxygen transmission rate of package bag Download PDFInfo
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- CN100554958C CN100554958C CNB2006101225686A CN200610122568A CN100554958C CN 100554958 C CN100554958 C CN 100554958C CN B2006101225686 A CNB2006101225686 A CN B2006101225686A CN 200610122568 A CN200610122568 A CN 200610122568A CN 100554958 C CN100554958 C CN 100554958C
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- transmission rate
- oxygen transmission
- wrappage
- testing
- culture media
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Abstract
The present invention relates to a kind of method of testing, specifically refer to a kind of method of testing oxygen transmission rate of package bag.The present invention's detection method utilizes the fungus growth reproductive process to need oxygen with this characteristic that earns a bare living, bacterial classification is inserted in the nutrient culture media, enclose in the wrappage of oxygen transmission rate to be measured with deoxidizer, putting into 28 ± 1 ℃ incubator cultivated 3 to 5 days, the nutrient culture media that mould grows fine is represented wrappage oxygen transmission rate height, otherwise then low.The invention provides a kind of short-cut method of testing package material oxygen transmission rate, equipment is simple, and general producer can ownly operate, but the wrappage that this method will have a known oxygen transmission rate in contrast, and test result is a qualitative results.
Description
Technical field:
The present invention relates to a kind of method of testing, specifically refer to a kind of method of testing oxygen transmission rate of package bag.
Technical background:
At present, food service industry is extensively utilized plastic sheeting sealed vacuum packaged food, prevent that Food Oxidation is rotten, vacuum-packed main effect is deoxygenation, to help preventing food spoilage, its principle is also fairly simple, because of food apoilage is mainly caused by the activity of microorganism, and the existence of most of microbe needs oxygen, and vacuum packaging is exactly to use this principle, in the packaging bag and food cell in oxygen take out, make microorganism lose " survival environment ".Deaeration in condenser is except suppressing microbial growth and breeding, the another one critical function is to prevent Food Oxidation, because of containing a large amount of unsaturated fatty acids in the grease based food, be subjected to the effect of oxygen and oxidation, make food spoiled, rotten, in addition, oxidation also makes vitamin A and C loss, unstable material in the food colour is subjected to the effect of oxygen, makes colour-darkening.So deoxygenation can prevent food spoilage effectively, keeps its color and nutritive value, select vacuum-packed plastic sheeting most important.When using deoxidizer to preserve food, must select the low wrappage of oxygen transmission rate for use, otherwise deoxidizer can very fast inefficacy, does not reach the effect to packaged food protection.Yet the oxygen transmission rate that detects film needs the detecting instrument by specialty, but the price of equipment is higher, is the investment that general producer is difficult to bear.The user wishes to have a kind of with low cost, easy operating, the objective reliable method of detection so that the oxygen transmission rate of testing film packaging bag.
Summary of the invention:
The objective of the invention is at above-mentioned the deficiencies in the prior art, and a kind of easy method of testing of packaging bag oxygen transmission rate is provided.
In order to achieve the above object, the present invention adopts following technical scheme:
The method of a kind of testing oxygen transmission rate of package bag of the present invention is characterized in that: its test operating procedure of the present invention is as follows:
1), select several known wrappage for use with different oxygen transmission rates, use sign flag respectively;
2), the different materials of wrappage to be detected and sign flag is cut into equal area, do pouch, and through sufficiently sterilised to germ-free condition;
3) the equivalent mycotic spore solution that, in sample packaging bag and packaging bag to be detected, adds certain dilute concentration respectively;
4), in the packaging bag that mycotic spore liquid is housed, add nutrient culture media, mix, treat vacuum-pumping and sealing after the nutrient culture media cooled and solidified;
5), the incubator of putting into 28 ± 1 ℃ cultivates, and record time at that time; Every the growing state of a mould of 24h observed and recorded, change per 12 hours after the 72nd hour into and observe once, record mildew situation;
6), by observing each nutrient culture media mildew situation, contrast the oxygen transmission rate of each sample, find out and the approaching known materials of wrappage oxygen transmission rate to be detected, comprehensively judge, obtain a result.
Above 3), 4) step is operated under aseptic condition.
From technique scheme as can be seen, detection method of the present invention utilizes the fungus growth reproductive process to need oxygen with this characteristic that earns a bare living, bacterial classification is inserted in the nutrient culture media, vacuumize packing, putting into 28 ± 1 ℃ incubator cultivated 3 to 5 days, the nutrient culture media that mould grows fine is represented wrappage oxygen transmission rate height, otherwise then low.This method provides a kind of straightforward procedure of testing package material oxygen transmission rate, and equipment is simple, and general producer can ownly operate, but the material that this method will have a known oxygen transmission rate in contrast, and test result is a qualitative results.
Embodiment:
The method of a kind of testing oxygen transmission rate of package bag of the present invention, at first with deployed potato culture, at 121 ℃, sterilization is 30 minutes under the 0.1m atmospheric pressure, and is standby.
Second step scrapes lawn for taking out the mould indicator bacteria of refrigeration, sneaks in the sterilized water, and making concentration is 10
7Individual/ml Penicillium notatum suspension.
Third step is to put on symbol A, B, C respectively at sample packaging bag OPP/CPP, PET/CPP, KOP/CPP, and adds 3ml mould suspension respectively in A, B, C and the packaging bag to be measured.
The 4th step is cooled in 40～50 ℃ the nutrient culture media for adding 100ml in above-mentioned wrappage, sways evenly, after the cooling, vacuumizes pressurizing window, guarantee sealing-strength and quality, and each sample is done three parallel laboratory tests.
The oxygen transmission rate of known sample A, B, three kinds of materials of C:
A:OPP/CPP 1500～1800ml/m
224hatm oxygen transmission rate height
B:PET/CPP 60-80ml/m
2The 24hatm oxygen transmission rate is medium
C:KOP/CPP 20ml/m
2The 24hatm oxygen transmission rate is low
The 5th step: constant temperature culture is 3 days in 28 ± 1 ℃ of incubators, observes once in per 24 hours, changes per 12 hours after 3 days into and observes once, writes down each nutrient culture media mildew situation; Observe and find that the fungus growth of A packaging bag is good after 7 days, media surface grows a large amount of hickies and changes blue or green gradually; A small amount of white point appears in B packaging bag media surface; C packaging bag nutrient culture media is then smooth as new; In the testing sample bag in the nutrient culture media mildew quantity between B and C.
The 6th step is for reaching a conclusion by experiment, and packaging bag oxygen transmission rate to be measured is between B, C, at 20～60ml/m
2Between the 24hatm, belong to low oxygen transmission rate packaging material.
Certainly, the above embodiment only is preferred embodiment of the present invention, and protection domain not thereby limiting the invention so the equivalence that all shapes according to the present invention, structure and principle are done changes, all should be covered by in protection scope of the present invention.
Claims (2)
1, a kind of method of testing oxygen transmission rate of package bag is characterized in that: its test operating procedure is as follows:
1), select several known wrappage for use with different oxygen transmission rates, use sign flag respectively:
2), the different materials of wrappage to be detected and sign flag is cut into equal area, do pouch, and through sufficiently sterilised to germ-free condition;
3) the equivalent mycotic spore solution that, in sample packaging bag and packaging bag to be detected, adds certain dilute concentration respectively:
4), in the packaging bag that mycotic spore liquid is housed, add nutrient culture media, mix, treat vacuum-pumping and sealing after the nutrient culture media cooled and solidified;
5), the incubator of putting into 28 ± 1 ℃ cultivates, and record time at that time; Every the growing state of a mould of 24h observed and recorded, change per 12 hours after the 72nd hour into and observe once, record mildew situation;
6), by observing each nutrient culture media mildew situation, contrast the oxygen transmission rate of each sample, find out and the approaching known materials of wrappage oxygen transmission rate to be detected, comprehensively judge, obtain a result.
2, the method for a kind of testing oxygen transmission rate of package bag according to claim 1 is characterized in that: above-mentioned 3), 4) step operates under aseptic condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101225686A CN100554958C (en) | 2006-09-30 | 2006-09-30 | A kind of method of testing oxygen transmission rate of package bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101225686A CN100554958C (en) | 2006-09-30 | 2006-09-30 | A kind of method of testing oxygen transmission rate of package bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1996011A CN1996011A (en) | 2007-07-11 |
| CN100554958C true CN100554958C (en) | 2009-10-28 |
Family
ID=38251154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101225686A Expired - Fee Related CN100554958C (en) | 2006-09-30 | 2006-09-30 | A kind of method of testing oxygen transmission rate of package bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100554958C (en) |
-
2006
- 2006-09-30 CN CNB2006101225686A patent/CN100554958C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 塑料薄膜透气测试装置及测试方法研究. 韩兆让，郑国，罗桂兰，任宝林.包装工程，第15卷第2期. 1994 |
| 塑料薄膜透气测试装置及测试方法研究. 韩兆让，郑国，罗桂兰，任宝林.包装工程，第15卷第2期. 1994 * |
| 食品包装薄膜的透气性测试研究. 温珍才，叶保平.包装工程，第14卷第1期. 1993 |
| 食品包装薄膜的透气性测试研究. 温珍才，叶保平.包装工程，第14卷第1期. 1993 * |
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| Publication number | Publication date |
|---|---|
| CN1996011A (en) | 2007-07-11 |
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| C14 | Grant of patent or utility model | ||
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Owner name: GUANGDONG GUANGYI SCIENCE + TECHNOLOGY INDUSTRY CO Free format text: FORMER OWNER: LIANG JIAZHEN Effective date: 20110422 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 523220 GUANGYI FOOD ADDITIVES CO., LTD., LANE 3, KAIRONG STREET, ZHONGXIN ROAD, ZHONGTANG TOWN, DONGGUAN CITY, GUANGDONG PROVINCE TO: 523220 WUJIAYONG INDUSTRIAL ZONE 2, ZHONGTANG TOWN, DONGGUAN CITY, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110422 Address after: Wu Chung Chudo town industrial zone second 523220 Guangdong city of Dongguan Province Patentee after: Guangdong Guangyi Technology Co., Ltd. Address before: 523220 Guangdong province Dongguan City Chudo town center Lu Kai Jung 3 Lane Street Guangyi Food Additive Co. Patentee before: Liang Jiazhen |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20120930 |