CN101411355B - Method for processing dried lichee and dried longan - Google Patents
Method for processing dried lichee and dried longan Download PDFInfo
- Publication number
- CN101411355B CN101411355B CN2008102195314A CN200810219531A CN101411355B CN 101411355 B CN101411355 B CN 101411355B CN 2008102195314 A CN2008102195314 A CN 2008102195314A CN 200810219531 A CN200810219531 A CN 200810219531A CN 101411355 B CN101411355 B CN 101411355B
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- Prior art keywords
- lichee
- longan
- dried
- done
- longans
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- 235000000235 Euphoria longan Nutrition 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title abstract description 14
- 244000139609 Euphoria longan Species 0.000 title 1
- 240000001008 Dimocarpus longan Species 0.000 claims abstract description 67
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- 230000003115 biocidal effect Effects 0.000 claims abstract description 10
- -1 polypropylene Polymers 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000004806 packaging method and process Methods 0.000 claims description 11
- 238000003672 processing method Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 7
- 244000183278 Nephelium litchi Species 0.000 abstract 4
- 239000003242 anti bacterial agent Substances 0.000 abstract 1
- 239000004745 nonwoven fabric Substances 0.000 abstract 1
- 239000000796 flavoring agent Substances 0.000 description 6
- 235000019634 flavors Nutrition 0.000 description 6
- 235000013399 edible fruits Nutrition 0.000 description 5
- 238000005842 biochemical reaction Methods 0.000 description 3
- 235000021022 fresh fruits Nutrition 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000009313 farming Methods 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- 230000000050 nutritive effect Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003958 fumigation Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 235000008935 nutritious Nutrition 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Landscapes
- Packages (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Abstract
The invention discloses a method for processing dried litchis and longans. The litchis or longans are packaged by an antibiotic polypropylene spunbonding method non-woven fabric, and stored in a refrigerator at a temperature of between 40 to 5 Celsius degrees below zero; by reducing the humidity of the refrigerator, the water content of the peel is quickly reduced to less than 60 percent, the water content of the flesh is slowly volatilized; and after 4 to 5 months, the water content of the flesh of the litchis or longans is reduced to less than 25 percent, and the dried litchis and longans are obtained.
Description
Technical field
The present invention relates to that a kind of lichee is done and the processing method of dried longan.
Background technology
Lichee and longan are subtropical fruits, and the pulp flavor uniqueness is nutritious.Lichee and longan easily go mouldy after harvesting, fresh-keeping difficulty, but they are processed into dry fruit long preservation afterwards.
Lichee is done and the processing method of dried longan, generally all is that ripe lichee or longan are carried out the drying processing that Exposure to Sunlight, fiery roasting or Exposure to Sunlight combine with the fire roasting.
Chinese patent CN02115321.3 discloses a kind of " the roasting store method of semi-dried dried lichee, dried longan ", it is characterized in that: the lichee of the fresh no disease and pest of selective maturation, longan fresh fruit be through cleaning, drain, and through SO
2Fumigation completes, and dries to water content 25～70%, carries out Vacuum Package with vacuum cooking bag film or other container, seals preservation.
That Chinese patent CN01107669.0 discloses is a kind of " low-temperature vacuum drying roasting lichee is done, the method for dried longan "; it is characterized in that: selective maturation fresh lichee, longan fruit; after 105～120 ℃ of steams complete; in vacuum is under 0.08～0.099mPa negative pressure, 50～70 ℃ of conditions of temperature; after oven dry in 8～24 hours, roasting becomes the pulp outward appearance to be dried, the dried longan of lichee golden yellow, translucent, the strong former fruit local flavor of protection.
Above-mentioned lichee is done and the advantage of dried longan processing is to have finished in the short period of time process, but under this condition, because temperature is higher, strong biochemical reactions takes place in lichee and the longan pulp, and obvious variation has taken place the pulp taste.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, provide that a kind of lichee is done, the processing method of dried longan, the processing lichee is done and dried longan can guarantee to greatest extent that lichee and longan local flavor are constant under-40～5 ℃ of conditions, and the nutritional labeling loss is few.
Technical scheme of the present invention is as follows:
A kind of lichee is done, the processing method of dried longan, may further comprise the steps:
(1) gets fresh lichee or longan, remove branches and leaves;
(2) make packaging bag with antibiotic polypropylene spunbond method nonwoven, the lichee of step (1) or longan are put into this packaging bag and seal;
(3) packaged lichee of step (2) or longan are put into-40～5 ℃ of freezers, use the humidity in the dehumidifier reduction freezer, the pericarp water activity is reduced to rapidly less than lichee after 0.6,4～5 months or longan pulp moisture reduce to below 25%, get promptly that lichee is done, dried longan.Lichee is done, longan is golden yellow in pulp, and keeps former fruit local flavor.
A kind of lichee is done, the dried longan processing method, under-40～5 ℃ of conditions, lichee or longan are packed or sealed with antibiotic polypropylene spunbond method nonwoven, and antibiotic polypropylene spunbond method nonwoven has the effect of kill bacteria, mould and has the high ventilation performance, guarantees that lichee or longan can not go mouldy; Fresh fruit moisture slowly volatilizees, and has become finally that lichee is done, dried longan.
A kind of lichee is done, the dried longan processing method, under-40～5 ℃ of conditions, by using dehumidifier to reduce the humidity of freezer, lichee or longan epidermis water activity reduce rapidly, microorganism is difficult for growing on epidermis, pulp moisture is volatilized at low temperatures, tangible biochemical reactions does not take place in the pulp, the lichee that obtains is like this done and dried longan has kept original local flavor and nutritive value to greatest extent.
The present invention's " a kind of lichee do, dried longan processing method " has following beneficial effect:
Because described antibiotic polypropylene spunbond method nonwoven has antibacterial effect and high ventilation performance, can prevent that lichee or longan from going mouldy.
Preserve in-40～5 ℃ of freezers, use dehumidifier to reduce humidity in the freezer, quicken lichee or longan dehydration, lichee or longan pulp moisture are reduced to below 25% after 4～5 months, get promptly that lichee is dried, dried longan.With this understanding, tangible biochemical reactions does not take place in the pulp, the lichee that obtains is like this done and dried longan has kept original local flavor and nutritive value to greatest extent.
The specific embodiment
Embodiment 1
Lichee or longan are plucked the back and remove branches and leaves earlier.Get lichee or longan 10.0kg, after packaging with antibiotic polypropylene spunbond method nonwoven, preserve in 0～5 ℃ of following freezer, lichee or longan edible quality obviously do not descend in 30～45 days, can be used as fresh fruit and sell.Lichee or longan pulp moisture are reduced to less than 25% after 5 months, become lichee and do or dried longan.
Embodiment 2
Lichee or longan are plucked the back and remove branches and leaves earlier.Get lichee or longan 5.0kg, make packaging bag with antibiotic polypropylene spunbond method nonwoven, lichee or longan are put into after this packaging bag seals, in 0～5 ℃ of following freezer, preserve, use dehumidifier to reduce freezer humidity, the pericarp water activity is reduced to rapidly less than 0.6, and microorganism is difficult for growing on pericarp, can remove lichee or the external packing of farming eye this moment.Can adjust the humidity of freezer as required, thereby adjust pulp moisture evaporation speed, lichee or longan pulp moisture are reduced to less than 25% after 4 months, become lichee and do or dried longan.
Embodiment 3
Lichee or longan are plucked the back and remove branches and leaves earlier.Get lichee or longan 5.0kg, make packaging bag, lichee or longan are put into this packaging bag seal, in-18 ℃ of following freezers, preserve with antibiotic polypropylene spunbond method nonwoven.Use dehumidifier to reduce freezer humidity, the pericarp water activity is reduced to less than 0.6 rapidly.Can remove lichee or longan external packing this moment, and lichee or longan pulp moisture are reduced to less than 25% after 4 months, becomes lichee and do or dried longan.
Embodiment 4
Get lichee or longan 5.0kg, lichee or longan carry out sulphuring earlier handled 15 minutes, and sulfur dioxide residue is respectively less than 250ppm and 10ppm in pericarp and the pulp.Make packaging bag with antibiotic polypropylene spunbond method nonwoven, lichee or longan are put into this packaging bag and seal, in-40 ℃ of following freezers, preserve, use dehumidifier to reduce freezer humidity, the pericarp water activity is reduced to rapidly less than 0.6, microorganism is difficult for growing on pericarp, can remove lichee or the external packing of farming eye this moment.Can adjust the humidity of freezer as required, thereby adjust pulp moisture evaporation speed, lichee or longan pulp moisture are reduced to less than 25% after 4 months, become lichee and do or dried longan.
Claims (1)
- A lichee do, the processing method of dried longan, it is characterized in that: may further comprise the steps:(1) gets fresh lichee or longan, remove branches and leaves;(2) make packaging bag with antibiotic polypropylene spunbond nonwoven, the lichee of step (1) or longan are put into this packaging bag and seal;(3) packaged lichee of step (2) or longan are put into-40～5 ℃ of freezers, use the humidity in the dehumidifier reduction freezer, the pericarp water activity is reduced to rapidly less than lichee after 0.6,4～5 months or longan pulp moisture reduce to below 25%, get promptly that lichee is done, dried longan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102195314A CN101411355B (en) | 2008-11-28 | 2008-11-28 | Method for processing dried lichee and dried longan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102195314A CN101411355B (en) | 2008-11-28 | 2008-11-28 | Method for processing dried lichee and dried longan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101411355A CN101411355A (en) | 2009-04-22 |
| CN101411355B true CN101411355B (en) | 2011-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102195314A Active CN101411355B (en) | 2008-11-28 | 2008-11-28 | Method for processing dried lichee and dried longan |
Country Status (1)
| Country | Link |
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| CN (1) | CN101411355B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102389089A (en) * | 2011-11-14 | 2012-03-28 | 厦门亦坤果蔬专业合作社 | Dried litchi and preparation process thereof |
| CN105685560B (en) * | 2014-11-25 | 2019-01-11 | 广西大学 | A kind of processing method of dried longan |
| CN104970311A (en) * | 2015-06-11 | 2015-10-14 | 钟兴欢 | Processing method of dried litchi chinensis |
| CN105285078A (en) * | 2015-09-18 | 2016-02-03 | 惠州市四季鲜绿色食品有限公司 | Fresh keeping coating agent and application thereof in fresh keeping of medium-humidity dried longan pulp and medium-humidity dried litchi pulp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093433A (en) * | 1998-07-26 | 2000-07-25 | Juran Metal Works Ltd. | Process for preserving product quality of lychee |
| CN1306763A (en) * | 2000-01-21 | 2001-08-08 | 林亮 | Manufacturing method of hygienic dried longan |
| CN1385080A (en) * | 2002-05-31 | 2002-12-18 | 广东省农业科学院果树研究所 | Baking preservation method for half-dried leechee and longan |
| CN1541543A (en) * | 2003-09-08 | 2004-11-03 | 黄海雄 | Litchi and longan antistaling agent and methods of use |
-
2008
- 2008-11-28 CN CN2008102195314A patent/CN101411355B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093433A (en) * | 1998-07-26 | 2000-07-25 | Juran Metal Works Ltd. | Process for preserving product quality of lychee |
| CN1306763A (en) * | 2000-01-21 | 2001-08-08 | 林亮 | Manufacturing method of hygienic dried longan |
| CN1385080A (en) * | 2002-05-31 | 2002-12-18 | 广东省农业科学院果树研究所 | Baking preservation method for half-dried leechee and longan |
| CN1541543A (en) * | 2003-09-08 | 2004-11-03 | 黄海雄 | Litchi and longan antistaling agent and methods of use |
Non-Patent Citations (1)
| Title |
|---|
| 肖维强等.低温真空干燥焙制荔枝干、龙眼干的研究.《食品科学》.2004,第25卷(第8期),218-219. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101411355A (en) | 2009-04-22 |
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Effective date of registration: 20170616 Address after: 845350 the Xinjiang Uygur Autonomous Region Oblast Atux Industrial Park in Kunshan Patentee after: Xinjiang good morning Eco Agriculture Technology Co., Ltd. Address before: 510640 Tianhe District, Guangdong, No. five road, No. 381, Patentee before: South China University of Technology |