CN1384031A - Lichee and longan packing method with freshness keeping effect - Google Patents
Lichee and longan packing method with freshness keeping effect Download PDFInfo
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- CN1384031A CN1384031A CN 02115349 CN02115349A CN1384031A CN 1384031 A CN1384031 A CN 1384031A CN 02115349 CN02115349 CN 02115349 CN 02115349 A CN02115349 A CN 02115349A CN 1384031 A CN1384031 A CN 1384031A
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- bag
- lichee
- longan
- packing method
- packing
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Abstract
The lichee and longan packing method with freshness keeping effect includes lichee or longan is first packed in a non-toxic soft foamed plastic netted bag as inner bag and the inner bag is then packed in a non-toxic transparent or semi-transparent plastic bag as outer bag with the outer bag having small hole in its bottom, its mouth tied with small rope and 3-50% inner space being left empty. The present invention has obvious freshness keeping effect, and thus packed lichee may be kept at normal temperature for three days of ever longer without changing color and longan may have ever honger freshness keeping period.
Description
Technical field
The present invention relates to a kind of lichee, longan packing method with fresh-keeping effect.
Background technology
Lichee, longan are the good fruits in the appetizing south of the Five Ridges, are subjected to liking of the masses deeply, and Guangdong Province is the big producing province of lichee, longan, and this year, lichee output was near 1,000,000 tons.Fresh-keeping, packing, the transportation of lichee, longan are related to numerous orchard workers' vital interests and Agricultural Development.Existing lichee, longan are transported to the market of farm produce, market, shop after generally putting large bamboo or wicker basket, bamboo basket, carton (box), plastic box into even directly being put on the automobile, do not pack or use large bamboo or wicker basket, bamboo basket, carton (box) or plastic bag bag (branch) to adorn laggard marketing and sell.Use plastic bag packaging, the globule of steam and cohesion is stained with and is adhered on lichee, the longan, makes lichee, longan apt to deteriorate, and excellent to lichee is obviously, just blackening gradually of litchi rind behind the several hrs (shell), and pulp is rotten gradually.Too rustic as packing with large bamboo or wicker basket, bamboo basket, influence health, do not enter supermarket or market.
Technology contents
The objective of the invention is in order to overcome lichee, longan airtight with plastic bag packaging, the globule of steam and cohesion is stained with and is adhered on lichee, the longan, make the rotten shortcoming of lichee, longan, provide a kind of globule that certain air permeability, cohesion arranged to discharge, to have fresh-keeping effect, lichee, longan packing method elegant in appearance from the packaging bag bottom.
Technical scheme of the present invention is: a kind of lichee, longan packing method with fresh-keeping effect, it is characterized in that lichee, longan pack with one or more nontoxic, soft foamed plastic mesh bag-inner bags earlier, being installed with nontoxic, transparent or semitransparent plastic bag-outer bag that aperture can draining with a bottom again packs, sack is tied up with band, marline or elastic, leaves the space of 3-50% in the bag.
Above-mentioned inner bag packing can be with several inner bag multi-layer packagings (as packing for 3 layers with 3 inner bags), with a plurality of inner bag bag distribution packagings (packing as dividing 3 bags with 3 inner bags) or with which floor bag distribution packaging of a plurality of inner bags (as dividing 3 bags of double casings with 6 inner bags) except that packing separately with an inner bag.
The base material that nontoxic, soft foamed plastic mesh bag-inner bag and bottom are installed with nontoxic, the transparent or semitransparent plastic bag-outer bag of aperture is selected from polyethylene or acrylic plastering.
Inner bag mesh (hole) size and shape are not strict with, but should catch lichee, longan, should not slip through the net.
The aperture interbody spacer of outer bag bottom is 1-10 centimetre, and the diameter in hole is 0.1-2 centimetre, can be as the criterion according to packaging bag size and the water that can discharge in the outer bag, and hole shape is inessential.
The film thickness of outer bag is 1-35 * 10
-3Centimetre, be preferably 3-10 * 10
-3Centimetre.
The bag planted agent leaves the space of 3-50% during packing, preferably stays the space of 5-30%, produces carbon dioxide because breathe in the lichee, longan storage, and retaining carbon dioxide is the essential condition of lichee, extending longan shelf life.
Packing every bag of bag of lichee, longan 0.05-30 kilogram in this way is advisable, shelf consumer package (referring to be placed on the packing on market, the shop shelf) is every bag of bag 0.1-4 kilogram preferably, the upper limit considers that mainly gas compartment size is to the influence of fresh-keeping effect in the packaging bag, and lichee, longan itself are pushed the influence of quality and the weight capacity of plastic bag.
Advantage of the present invention and good effect are: inner bag has elasticity for soft foamed plastic mesh bag, can prevent extruding, and ventilated, can avoid or reduce moisture direct contact lichee, longan, helps lichee, extending longan shelf life.Outer bag adopts polyethylene or acrylic plastering, the carbon dioxide that both can retain lichee, longan breathing generation makes it suppress the breathing of lichee, longan in bag, guarantee the not volatilization in a large number of lichee, longan moisture, has certain permeability to air again, and outer bag bottom be provided with aperture can the venting bag in the globule of cohesion, make lichee, extending longan shelf life.Adopt the lichee of the present invention's packing, under the normal temperature (in Guangdong, the temperature in lichee production and marketing season is mostly more than 30 degrees centigrade) antifade substantially in 3 days or longer time, and the fresh keeping time of longan is more much longer, commercial very valuable, and conventional method packing or the lichee do not packed just began variable color in several hours, caused commodity to devalue.Outer bag be transparent plastic material or translucent plastic, can the direct viewing bag in the quality of lichee, longan, be businessman and client acceptance simultaneously, have commercial value.
About 3 days of time of above-mentioned packing method keeping fresh at normal temperature or longer time, longer if desired fresh keeping time preferably adds with antistaling agent or refrigeration, long-distance transport if desired, preferably above-mentioned packaged lichee, longan are put in hard packing chest or the basket again and transported, in order to avoid mechanical damage.
The drawing explanation
Accompanying drawing is plastic bag (outer bag) scheme drawing.1 is sack among the figure, and 2 is the bag end (bottom), and 3 is aperture.
The specific embodiment
11 kilograms of lichee of embodiment are 5 * 10 with a film thickness with 2 polyethylene foam plastics mesh bag double casings again
-3Centimetre Polythene Bag packing, 0.5 centimetre of the hole diameter of outer bag bottom, 3 centimetres of aperture pitch, tie up with band on top then, stays 20% space in the bag, basic antifade in the 3 day at normal temperatures time of this lichee.
2 0.1 kilograms of lichee of embodiment are packed with 1 polyethylene foam plastics mesh bag, are 4 * 10 with a film thickness again
-3Centimetre Polythene Bag packing, 0.2 centimetre of the hole diameter of outer bag bottom, 1.2 centimetres of aperture pitch, tie up with band on top then, stays 10% space in the bag, basic antifade in the 3 day at normal temperatures time of this lichee.
3 24 kilograms of lichee of embodiment divide 6 bags of double casings with 12 polyethylene foam plastics mesh bags, are 15 * 10 with a film thickness again
-3Centimetre Polypropylene Bag packing, 0.8 centimetre of the hole diameter of outer bag bottom, 3.5 centimetres of aperture pitch, tie up with band on top then, stays 30% space in the bag, basic antifade in the 3 day at normal temperatures time of this lichee.
Embodiment 4 presses embodiment 1, and lichee changes longan into, and the time of extending longan shelf life is longer.
Claims (8)
1. lichee, longan packing method with fresh-keeping effect, it is characterized in that lichee, longan pack with one or more nontoxic, soft foamed plastic mesh bag-inner bags earlier, being installed with nontoxic, transparent or semitransparent plastic bag-outer bag that aperture can draining with a bottom again packs, sack is tied up with band, marline or elastic, leaves the space of 3-50% in the bag.
2. according to the lichee described in the claim 1, longan packing method, it is characterized in that the several inner bag multi-layer packagings of inner bag packaging, with a plurality of inner bag bag distribution packagings or with which floor bag distribution packaging of a plurality of inner bags.
3. according to the lichee described in the claim 1, longan packing method, it is characterized in that the base material of non-toxic transparent plastic bag-outer bag that nontoxic, soft foamed plastic mesh bag-inner bag and bottom are installed with aperture is selected from polyethylene or acrylic plastering.
4. according to lichee, the longan packing method described in the claim 1-3, it is characterized in that the aperture interbody spacer of outer bag bottom is 1-10 centimetre, the diameter in hole is 0.1-2 centimetre.
5. according to lichee, the longan packing method described in the claim 1-3, it is characterized in that the film thickness of outer bag is 1-30 * 10
-3Centimetre.
6. according to the lichee described in the claim 5, longan packing method, it is characterized in that the film thickness of outer bag is 3-15 * 10
-3Centimetre.
7. according to lichee, the longan packing method described in the claim 1,2,3 or 6, the bag planted agent leaves the space of 3-50% when it is characterized in that packing.
8. according to lichee, the longan packing method described in the claim 1,2,3 or 6, the bag planted agent leaves the space of 5-30% when it is characterized in that packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021153493A CN1179869C (en) | 2002-06-07 | 2002-06-07 | Lichee and longan packing method with freshness keeping effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021153493A CN1179869C (en) | 2002-06-07 | 2002-06-07 | Lichee and longan packing method with freshness keeping effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1384031A true CN1384031A (en) | 2002-12-11 |
| CN1179869C CN1179869C (en) | 2004-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021153493A Expired - Fee Related CN1179869C (en) | 2002-06-07 | 2002-06-07 | Lichee and longan packing method with freshness keeping effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1179869C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107347973A (en) * | 2017-07-03 | 2017-11-17 | 广东省农业科学院果树研究所 | A kind of method for extending semi-dried dried lichee normal-temperature shelf life color and luster in the place for not possessing refrigerated condition |
| CN109169871A (en) * | 2018-09-06 | 2019-01-11 | 广东省农业科学院蚕业与农产品加工研究所 | A kind of preservation method of lichee |
-
2002
- 2002-06-07 CN CNB021153493A patent/CN1179869C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107347973A (en) * | 2017-07-03 | 2017-11-17 | 广东省农业科学院果树研究所 | A kind of method for extending semi-dried dried lichee normal-temperature shelf life color and luster in the place for not possessing refrigerated condition |
| CN107347973B (en) * | 2017-07-03 | 2023-08-08 | 广东省农业科学院果树研究所 | Method for prolonging normal-temperature shelf life color of semi-dry litchi in places without refrigeration condition |
| CN109169871A (en) * | 2018-09-06 | 2019-01-11 | 广东省农业科学院蚕业与农产品加工研究所 | A kind of preservation method of lichee |
| CN109169871B (en) * | 2018-09-06 | 2022-03-11 | 广东省农业科学院蚕业与农产品加工研究所 | Litchi preservation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1179869C (en) | 2004-12-15 |
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