CN1965660A - Fresh-keeping method for lichee - Google Patents
Fresh-keeping method for lichee Download PDFInfo
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- CN1965660A CN1965660A CN 200610123793 CN200610123793A CN1965660A CN 1965660 A CN1965660 A CN 1965660A CN 200610123793 CN200610123793 CN 200610123793 CN 200610123793 A CN200610123793 A CN 200610123793A CN 1965660 A CN1965660 A CN 1965660A
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- protection package
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Abstract
The invention relates to an antiseptic method of leechee, wherein the invention uses antiseptic polypropylene non-woven cloth, to prepare different fresh-keeping bags, and packs dibutyl fumarate into common non-woven cloth to prepare the non-woven package, while the mass ratio between leechee and fresh agent is 10000:0.1-2; then putts leechee into the fresh-keeping bags, uses lines to tie the bag or uses thermal method to seal the bag, putts into ventilate package box, or putts packed leechee into bamboo frame to be put into fresh-keeping bag. The invention can store leechee at 0-5Deg. C for 30-35days. When the leechee is treated with sulfur, the leechee can be stored at 0-5Deg. C for 90-100day.
Description
Technical field
The present invention relates to the fruit antiseptic preservation technology, particularly relate to a kind of fresh-keeping method for lichee.
Background technology
Lichee is a subtropical fruit, and the pulp flavor uniqueness is nutritious, is top grade in the fruit.Brown stain can take place and go mouldy in lichee after harvesting.According to statistics, the annual loss that causes because of rotting of lichee accounts for more than 20% of total output.The storage fresh-keeping difficulty of fresh litchi has also limited its way far away transportation and sale, has restricted the developing in market.
Lichee adopts generally that chemicals is handled, sulphuring is handled or the sulfur dioxide slowly-releasing is handled, and its fresh-keeping effect is not fine, and people's health is had harm.Lichee also can adopt freshness protection package to carry out fresh-keeping to lichee.Application number is that 99117122.5 Chinese invention patent application discloses a kind of " freshness protection package for preventing litchi from browing and preparation method thereof ", and its main technical schemes is: make freshness protection package by PE film and paper double layer material, this freshness protection package has fresh-keeping effect to lichee.The Chinese invention patent application of application number 03113758.X discloses a kind of " Fruit and vegetable preserving bag ", and its main method is characterized as: freshness protection package is made by polypropylene spunbond method nonwoven.This freshness protection package has fresh-keeping effect to lichee.But the freshness protection package that contains the PE film, its water permeability can be very poor, and humidity is excessive in the internal layer paper material suction back pkt., is unfavorable for fruit freshness preserving.Though the freshness protection package that normal polypropylene spun-bond process nonwoven is made has permeability preferably, and the harmful microorganism in the freshness protection package is not had killing action, can not stop the growth of microorganism on lichee pericarp.
The disclosed technical scheme of Chinese invention patent application that name is called " a kind of lichee, antistaling agent for longan and using method thereof " (number of patent application is 03140439.1) is: edible canna powder and bisulfites or dithionite are mixed and made into antistaling agent, put into freshness protection package after wrapping with polypropylene spunbond method nonwoven.This antistaling agent plays preservation by slow release sulfur dioxide.Can there be more sulfur dioxide residue in the lichee of Chu Liing by this method, and it is applied and is restricted.
Summary of the invention
The objective of the invention is provides a kind of anti-rot and fresh-keeping method that helps prolonging the lichee fresh-keeping phase in order to solve the deficiency that above-mentioned prior art exists.
Purpose of the present invention is achieved through the following technical solutions.
A kind of fresh-keeping method for lichee comprises the steps:
(1) get antibiotic polypropylene spunbond method nonwoven, make the freshness protection package of difformity and specification as required, described antibiotic polypropylene spunbond method nonwoven be 10 the gram/square metre～250 the gram/square metre nonwoven;
(2) dimethyl fumarate be packaged in make fresh-keeping bag in the common non-woven fabric, to want the fresh-keeping lichee and the weight ratio of antistaling agent be 10000: 0.1～2;
(3) the fresh-keeping lichee of want is put into the freshness protection package that the described dimethyl fumarate antistaling agent of step (2) is housed, hitch sack or adopt that hot pressing is legal seals bag, put into the packing case of an amount of air vent with cord.
Described step (3) is described puts into freshness protection package after wanting fresh-keeping lichee can be packaged in the bamboo frame in advance again.
In order to strengthen fresh-keeping effect, the described lichee of step (3) can carry out precooling treatment earlier before putting into freshness protection package, promptly lichee pluck the back earlier with lichee 1～5 ℃ of following precooling 4～24 hours; Also can carry out sulfur fumigation to lichee handles or hot water treatment.
Principle of the present invention: the freshness protection package material therefor is antibiotic polypropylene spunbond method nonwoven, this nonwoven is different from common polypropylene spunbond method nonwoven, it is a kind of novel antibacterial material that utilizes molecule assembling antimicrobial technology to make, it can kill bacteria, mould, prevents that bacterium, mould from seeing through freshness protection package; This freshness protection package has the good aeration performance simultaneously, can regulate and keep oxygen and gas concentration lwevel and relative humidity suitable in the freshness protection package, obtains good fresh-keeping effect.On the other hand, antistaling agent packages with common non-woven fabric, makes the antistaling agent bag, puts into freshness protection package, can penetrate the cells of microorganisms film after the dimethyl fumarate distillation, and microorganism is had killing action.Lichee is carried out precooling treatment can suppress the lichee respiratory intensity, lichee is carried out sulfur fumigation is handled or hot water treatment can reduce or kill surface microorganism, suppress the epidermis polyphenol oxidase, thereby prevent that lichee from going mouldy or brown stain.The favourable raising lichee fresh-keeping phase of lichee pre-treatment measure.
With respect to prior art, the present invention has following beneficial effect:
Because described antibiotic polypropylene spunbond method nonwoven has antibacterial effect and venting and water permeable performance preferably, prevents that microorganism from entering in the freshness protection package, the microorganism in the freshness protection package had adsorb and killing action, prevent that lichee from going mouldy.Dimethyl fumarate can be killed harmful microorganisms such as lichee epidermis bacterium and mould simultaneously, guarantees that interior environment of freshness protection package and lichee epidermis are aseptic, can prevent further that like this lichee from going mouldy.Lichee can suppress the lichee respiration 0～5 ℃ of storage down, reduces the effect of polyphenol oxidase, prevents the lichee brown stain, thereby can prolong the lichee fresh-keeping phase.Fresh-keeping method for lichee of the present invention meets the fresh-keeping requirement of international fruit, to human body safety.
The specific embodiment
For better understanding the present invention, below in conjunction with embodiment the present invention is done detailed description further, but the scope of protection of present invention is not limited to the scope that embodiment represents.
Embodiment 1
Lichee is plucked the back and is removed impurity such as branch and leaf earlier, carries out precooling 4 hours under 0～5 ℃.Get the antistaling agent that contains dimethyl fumarate 45mg, be packaged in the common non-woven fabric, make fresh-keeping bag, put into antibiotic polypropylene spunbond method nonwoven freshness protection package bottom, described antibiotic polypropylene spunbond method nonwoven be 10 grams produced of Guilin Jiqi Zhengfeng Antibacterial Material Co., Ltd/square metre antibiotic polypropylene spunbond method nonwoven.The lichee 1.5kg that learns from else's experience after the precooling puts into freshness protection package, puts into the packing case of an amount of air vent after sealing, 2 ± 1 ℃ of storages down, but lichee preservation 30～45 days.Lichee does not have and goes mouldy pulp nondiscolouring, pure taste edible.
Embodiment 2
Lichee is plucked the back and is removed impurity such as branch and leaf earlier, carries out precooling 10 hours under 0～5 ℃.Get the antistaling agent that contains dimethyl fumarate 50mg, be packaged in the common non-woven fabric, make fresh-keeping bag, put into antibiotic polypropylene spunbond method nonwoven freshness protection package bottom, described antibiotic polypropylene spunbond method nonwoven be 10 grams produced of Guilin Jiqi Zhengfeng Antibacterial Material Co., Ltd/square metre antibiotic polypropylene spunbond method nonwoven.Learn from else's experience lichee 1.5kg after the precooling is packaged in the bamboo frame, and bamboo frame and fresh-keeping bag are put into freshness protection package, 2 ± 1 ℃ of storages down, but lichee preservation 30～45 days.
Embodiment 3
Lichee is plucked the back and is removed impurity such as branch and leaf earlier, carries out sulfur fumigation then and handles.Get the antistaling agent that contains dimethyl fumarate 160mg, be packaged in the common non-woven fabric, make fresh-keeping bag, put into 200 grams that Guilin Jiqi Zhengfeng Antibacterial Material Co., Ltd produces/square metre antibiotic polypropylene spunbond method nonwoven freshness protection package bottom.The lichee 5kg that gets behind the sulphuring is loaded in the frame of plastic, and frame of plastic is put into freshness protection package, 1 ± 0.5 ℃ of storage down, but lichee preservation 80～100 days.
Embodiment 4
Lichee is plucked the back and is removed impurity such as branch and leaf earlier, carries out sulfur fumigation then and handles.Get the antistaling agent that contains dimethyl fumarate 60mg, be packaged in the common non-woven fabric, make fresh-keeping bag, put into 150 grams that Guilin Jiqi Zhengfeng Antibacterial Material Co., Ltd produces/square metre antibiotic polypropylene spunbond method nonwoven freshness protection package bottom.Get the lichee 1.5kg behind the sulphuring, be packaged in the bamboo frame, the bamboo frame is put into freshness protection package, 1 ± 0.5 ℃ of storage down, but lichee preservation 80～100 days.
Embodiment 5
Lichee is plucked back elder generation and is removed impurity such as branch and leaf, carries out precooling 24 hours under 0～5 ℃, handles 20 seconds in 52 ℃ of hot water, and frozen water was handled 2～3 minutes, and taking-up is dried to epidermis anhydrous under 1～5 ℃.Get the antistaling agent that contains dimethyl fumarate 45mg, be packaged in the common non-woven fabric, make fresh-keeping bag, put into 200 grams that Guilin Jiqi Zhengfeng Antibacterial Material Co., Ltd produces/square metre antibiotic polypropylene spunbond method nonwoven freshness protection package bottom.Lichee 1.5kg after heat-obtaining is handled is packaged in the bamboo frame, and the bamboo frame is put into freshness protection package, 1 ± 0.5 ℃ of storage down, but lichee preservation 80～100 days.
Claims (5)
1, a kind of fresh-keeping method for lichee is characterized in that comprising the steps:
(1) get antibiotic polypropylene spunbond method nonwoven, make the freshness protection package of difformity and specification as required, described antibiotic polypropylene spunbond method nonwoven be 10 the gram/square metre～250 the gram/square metre nonwoven;
(2) dimethyl fumarate be packaged in make fresh-keeping bag in the common non-woven fabric, to want the fresh-keeping lichee and the weight ratio of antistaling agent be 10000: 0.1～2;
(3) the fresh-keeping lichee of want is put into the freshness protection package that the described dimethyl fumarate antistaling agent of step (2) is housed, hitch sack or adopt that hot pressing is legal seals bag, put into the packing case of an amount of air vent with cord.
2, according to the described a kind of fresh-keeping method for lichee of claim 1, it is characterized in that the described lichee of step (3) before putting into freshness protection package, earlier with lichee 1～5 ℃ of following precooling 4～24 hours.
3, according to the described a kind of fresh-keeping method for lichee of claim 1, it is characterized in that described step (3) lichee before putting into freshness protection package, earlier lichee is carried out sulfur fumigation processing or blanching processing.
4, a kind of fresh-keeping method for lichee according to claim 1 and 2 is characterized in that: antistaling agent is packaged in and makes fresh-keeping bag in the common non-woven fabric, and fresh-keeping bag is put into the freshness protection package bottom.
5,, it is characterized in that described step (3) is to put into the freshness protection package that antistaling agent is housed again after the fresh-keeping lichee of want is packaged in the bamboo frame in advance according to the described a kind of fresh-keeping method for lichee of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101237931A CN100459867C (en) | 2006-11-27 | 2006-11-27 | Fresh-keeping method for lichee |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101237931A CN100459867C (en) | 2006-11-27 | 2006-11-27 | Fresh-keeping method for lichee |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1965660A true CN1965660A (en) | 2007-05-23 |
| CN100459867C CN100459867C (en) | 2009-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101237931A Expired - Fee Related CN100459867C (en) | 2006-11-27 | 2006-11-27 | Fresh-keeping method for lichee |
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| Country | Link |
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| CN (1) | CN100459867C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101385481B (en) * | 2007-09-13 | 2011-08-17 | 黄海雄 | Lichee fresh-keeping process |
| CN103636763A (en) * | 2013-11-25 | 2014-03-19 | 茂名市泽丰园农产品有限公司 | Litchi sulfur smoking method |
| CN103651752A (en) * | 2013-11-30 | 2014-03-26 | 周瑞保 | Preparation method of dehydrated sweet potatoes |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL125508A (en) * | 1998-07-26 | 2002-07-25 | Juran Metal Works Ltd | Process for preserving product quality of lychee |
| CN1088562C (en) * | 1999-06-26 | 2002-08-07 | 广西大学 | Ordinary-temp antistaling tachnology for litchi and longan |
| CN1111010C (en) * | 2000-11-28 | 2003-06-11 | 华南农业大学 | Low-temp antistaling method combining antiseptic with sulfur treating for litchi and longan |
| CN1273027C (en) * | 2003-09-08 | 2006-09-06 | 黄海雄 | Litchi and longan antistaling agent and methods of use |
| CN1269885C (en) * | 2004-05-18 | 2006-08-16 | 广西大学 | Fruit-vegetable fresh-retaining film, and its production method and equipment |
| CN1613331A (en) * | 2004-12-02 | 2005-05-11 | 许连科 | Preserving technology for leechee |
-
2006
- 2006-11-27 CN CNB2006101237931A patent/CN100459867C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101385481B (en) * | 2007-09-13 | 2011-08-17 | 黄海雄 | Lichee fresh-keeping process |
| CN103636763A (en) * | 2013-11-25 | 2014-03-19 | 茂名市泽丰园农产品有限公司 | Litchi sulfur smoking method |
| CN103651752A (en) * | 2013-11-30 | 2014-03-26 | 周瑞保 | Preparation method of dehydrated sweet potatoes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100459867C (en) | 2009-02-11 |
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Granted publication date: 20090211 Termination date: 20111127 |