CN1056962C - Fresh keeping agent for litchi and longan and its use - Google Patents
Fresh keeping agent for litchi and longan and its use Download PDFInfo
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- CN1056962C CN1056962C CN97105377A CN97105377A CN1056962C CN 1056962 C CN1056962 C CN 1056962C CN 97105377 A CN97105377 A CN 97105377A CN 97105377 A CN97105377 A CN 97105377A CN 1056962 C CN1056962 C CN 1056962C
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- China
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- kilograms
- sodium
- longan
- oxysalt
- sulphur
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Abstract
The present invention relates to a refreshing agent for refreshing litchis and longan at normal temperature and a refreshing method thereof. The refreshing agent is composed of sulfuric oxysalt and an auxiliary agent. The refreshing method comprises the step that the refreshing agent and fresh fruits are together put in a plastic bag for sealing and loading in a box. The refreshing time can reach 10 to 15 adys at normal temperature, the color of fruit peels can not be changed, and pulp can not staled.
Description
The present invention relates to the preservation method of a kind of fruit antistaling agent and preservation method thereof, particularly lichee and longan.
Lichee and longan are to be difficult to fresh-keeping inferior hot tropical fruit (tree), fresh-keeping especially at normal temperatures more difficult, lichee can only be deposited at most three days under 25-30 ℃ temperature, longan also can only be deposited three to four days, the method of present fresh-keeping lichee mainly adopts the liquid phase bactericide to add refrigeration, but the litchi and longan after the refrigeration can only be deposited half a day to one day on shelf, and deposits that pericarp is variable color after several hours, and pulp has also lost new delicate flavour.The another kind of preservation method of lichee is to transport to special stove drying machine after the fruit harvest, the SO that utilizes burning sulphur to produce
2Gas is killed the bacterium on lichee surface, and cuts off the thin base of the part organized enzyme in the fruit, reduce its respiratory intensity, but the shortcoming of stove drying method is to focus on, and increases the time that is transported to the processing field after gathering, SO during stove drying
2Concentration be difficult for to grasp, work as SO
2Not only pericarp variable color during excessive concentration, the infringement image appearance, pulp also has spoiled, SO
2Concentration is crossed to hang down and is not had sterilization again, and also must refrigerate as placing more than 5 days after the stove drying, is placed on the shelf and can not surpasses two days later, so application is also few at present.Chinese patent 94107278.9 has also proposed the fruit freshness preserving method that a kind of chemicals make enzyme deactivation, it is to adopt acid, alkali, salt or proteolytic enzyme to change enzymatic activity in the fruit, and specific practice is that fresh fruit has been put into acid, weak base salt, reductant-oxidant such as malic acid, Na
2CO
3, Na
2S
2O
5, KMnO
4The aqueous solution in soak or be put in protease, the antibiotic aqueous solution and soak, this processing method and common solution infusion method difference not quite only used some different medicaments, and freshness date can not prolong a lot; After these solution-treated as do not adopt the refrigeration measure, also at room temperature storage life prolongs 2-3 days as lichee, longan, so present many scientific workers still can prolong the preservation method of fruit storage lives such as lichee, longan effectively in continuous exploration.
The purpose of this invention is to provide a kind of can make lichee, longan never degenerated in fresh-keeping at normal temperatures 10-15 days, not only be fit to large quantities of focus on and also be fit to simultaneously the orchard worker pluck on-the-spotly handle immediately, antistaling agent and preservation method thereof that method is simple.
Lichee of the present invention, antistaling agent for longan adopt the oxysalt of the sulphur that can decomposite sulfur dioxide and auxiliary agent to form, and the oxysalt of these sulphur comprises sodium sulfite (Na
2SO
3), sodium hydrogensulfite (Na
2HSO
3), sodium thiosulfate (Na
2S
2O
3), sodium dithionite (Na
2S
2O
4), pyrosulfurous acid sodium (Na
2S
2O
5), (sodium pyrosulfate) Na
2S
2O
7Deng, or their mixture, also can use sylvite and calcium salt, as potassium sulfite, calcium sulfite etc.The effect of auxiliary agent is to make the oxysalt of sulphur slowly release sulfur dioxide and antistaling agent is made tablet with certain speed, the filler of granule, these auxiliary agents comprise gelatin, starch, propionic acid, citric acid, sorbic acid, calcium oxide, calper calcium peroxide, potassium permanganate, calcium stearate, silica gel, diatomite, bentonite, active carbon etc., can choose wherein a kind of or their mixture.
The composition of antistaling agent is the 20-80% that the oxysalt of sulphur accounts for antistaling agent weight, and auxiliary agent accounts for the 20-80% of antistaling agent weight.
Lichee, the preservation method of longan is that above-mentioned antistaling agent is cooked slabbing or graininess, or pack with the pulvis of poromeric material parcel, then by the deal of per 10 kilograms fresh fruit 0.5-10 gram put into together certain air permeability can polybag in seal, put room temperature storage or entrucking transportation in carton or the wooden case again into, this method can be under 25-35 ℃ temperature fresh-keeping 10-15 days, if be put in 5-10 ℃ the freezer seasoning after the vanning 30 days, needing only polybag after taking out does not at normal temperatures open or damages, also can preserve and never degenerate in 3-5 days, this just will increase storage period compared with existing lichee fresh-keeping method, has guaranteed that the long-distance and long-time transportation of delicious subtropical fruit undergoes no deterioration.
Above-mentioned described have certain air permeability can polybag comprise the freshness protection package that materials such as various polyethylene, polyvinyl chloride, polypropylene are made, its thickness is 0.01mm-0.10mm, too thin can influence intensity, too thickly cause permeability poor.
The present invention compared with prior art, its outstanding substantive distinguishing features and obvious improvement is:
1. fresh keeping time is long, seals as long as antistaling agent and new lichee, longan of plucking put in the plastics freshness protection package, can keep pericarp nondiscolouring in 10-15 days 25-35 ℃ under, and pulp never degenerates, not spoiled, is more suitable for refrigeration and stores and transports.
2. method is simple, and low equipment investment only needs plastics freshness protection package, plastic sealing machine or binding can carry out fresh-keeping operation, can also can focus at the orchard execute-in-place, not only is fit to the barton orchard, also is fit to have only the peasant of a small amount of fruit tree.
3. antistaling agent is nontoxic, and is harmless, SO
2Release concentration is suitable, and shell is faded very soon, also can not change the taste of pulp.
4. conveniently store and transport and put on the shelf,, transport to connect behind the destination and bag put on the shelf, made things convenient for shop-assistant and client, do not need to pack in addition again because quantitatively installed with bag when plucking.
Below be embodiments of the invention:
Embodiment one, get 20 kilograms of sodium sulfites, 1 kilogram in potassium permanganate, 40 kilograms of starch, 10 kilograms of bentonites, 2 kilograms of citric acids, make sheet or granule after pulverizing is mixed thoroughly earlier, add 10 gram antistaling agents, wrap with paper or cloth by per 10 kilograms of lichee or longan, the thickness of packing into is hot sealing vanning in the polyethylene plastic bag of 0.06mm, can store and transport.
Embodiment two, get 40 kilograms of sodium hydrogensulfites, 1 kilogram of sorbic acid, 5 kilograms in silica gel, 4 kilograms of active carbons are pulverized afterwards earlier and are mixed thoroughly, make particle system or tablet again, add 8 gram antistaling agents by per 10 kilograms of lichee or longan, the thickness of packing into is that the hot sealing vanning can store and transport in the polypropylene plastics of 0.08mm.
Embodiment three, get 35 kilograms in sodium thiosulfate, 2 kilograms of propionic acid, 25 kilograms of bentonites, 4 kilograms in calcium oxide, citric acid are made granule after smashing for 2 kilograms and mixing thoroughly, add 5 gram antistaling agents by per 10 kilograms of lichee or longan, the thickness of packing into is binding sealing in the polyvinyl chloride plastic pocket of 0.04mm, and vanning can store and transport.
Embodiment four, get 30 kilograms of sodium dithionites, 20 kilograms of potassium sulfites, 5 kilograms of citric acids, 3 kilograms of calper calcium peroxides, 4 kilograms of calcium stearates, pulverize earlier and afterwards make particle, add 4 gram antistaling agents by per 10 kilograms of lichee or longan, the thickness of packing into is hot sealing in the polyethylene plastic bag of 0.05mm, vanning, can store and transport.
Embodiment five, get 25 kilograms of sodium pyrosulfates, 15 kilograms of calcium stearates, 1 kilogram in potassium permanganate, 3 kilograms of active carbons are pulverized earlier, use the cloth bag then, add 6 gram antistaling agents by per 10 kilograms of lichee or longan, the thickness of packing into is sealing vanning in the polyvinyl chloride plastic pocket of 0.04mm, can store and transport.
Embodiment six, get 40 kilograms in pyrosulfurous acid sodium, 10 kilograms of calcium sulfites, 4 kilograms of sorbic acids, 20 kilograms of starch, 10 kilograms in gelatin, mix pulverizing together thoroughly, make tablet, add 3 grams by per 10 kilograms of lichee or longan, the thickness of packing into is hot sealing vanning in the polyethylene plastic bag of 0.03m, can store and transport.
Embodiment seven, get 50 kilograms in sodium thiosulfate, 20 kilograms of sodium sulfites, 10 kilograms of citric acids, 10 kilograms of calcium stearates, mix thoroughly after the pulverizing, make granule, add 2 gram antistaling agents by per 10 kilograms of lichee or longan, the thickness of packing into is hot sealing vanning in the polyethylene plastic bag of 0.02mm, can store and transport, also can refrigerate the back storing.
Embodiment eight, get 20 kilograms of sodium hydrogensulfites, 30 kilograms of sodium dithionites, 5 kilograms in potassium permanganate, 5 kilograms in diatomite, 5 kilograms in silica gel, 5 kilograms of propionic acid are mixed the back thoroughly and are pulverized, pack with cloth, add 4 gram antistaling agents by per 10 kilograms of lichee or longan, hot sealing and vanning in the polyvinyl chloride plastic pocket of the 0.05mm that packs into together can normal temperature or refrigeration storings.
Embodiment nine, get 10 kilograms of sodium dithionites, 20 kilograms in pyrosulfurous acid sodium, 10 kilograms of calcium sulfites, 5 kilograms of sorbic acids, 10 kilograms in calcium oxide, 8 kilograms of active carbons are mixed the back thoroughly and are pulverized, pack with poromeric material, add 3 gram antistaling agents by per 10 kilograms of lichee or longan, put into polyethylene plastic bag hot sealing and the vanning of 0.06mm together, can normal temperature or refrigeration storing.
Embodiment ten, get 60 kilograms of sodium pyrosulfates, 20 kilograms of starch, 15 kilograms in diatomite, and first mixing is pulverized, use tissue packaging then, add 2.5 gram antistaling agents by per 10 kilograms of lichee or longan, the thickness of packing into is sealing vanning in the polypropylene plastics pocket of 0.07mm, can store and transport.
Claims (2)
1. litchi and longan antistaling agent, it is characterized in that forming by the oxysalt and the auxiliary agent of the sulphur that can decomposite sulfur dioxide, wherein the oxysalt of sulphur is selected from sodium thiosulfate, sodium dithionite, pyrosulfurous acid sodium, sodium pyrosulfate and sylvite thereof, calcium salt, or their mixture, auxiliary agent is selected from starch, gelatin, propionic acid, citric acid, sorbic acid, calcium oxide, calper calcium peroxide, potassium permanganate, silica gel, bentonite, diatomite, or their mixture, the oxysalt of its sulphur accounts for the 20-80% of antistaling agent weight, and auxiliary agent accounts for 20-80%.
2. the preservation method of a litchi and longan; it is characterized in that oxysalt sodium thiosulfate with sulphur; sodium dithionite; pyrosulfurous acid sodium; sodium pyrosulfate and sylvite thereof; calcium salt; or their mixture; mixing the back in proportion with auxiliary agent pulverizes; the pulvis of making particle or tablet or wrapping up with poromeric material; obtain antistaling agent; the antistaling agent that adds the 0.5-10 gram by per 10 kilograms of fresh lichee longans; put polyethylene or polypropylene that thickness is 0.01-0.1mm together into; in the polyvinyl chloride plastic pocket; to case behind the plastic bag sealing; room temperature storage, or stored refrigerated in the time of 5-10 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105377A CN1056962C (en) | 1997-07-23 | 1997-07-23 | Fresh keeping agent for litchi and longan and its use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105377A CN1056962C (en) | 1997-07-23 | 1997-07-23 | Fresh keeping agent for litchi and longan and its use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1170505A CN1170505A (en) | 1998-01-21 |
| CN1056962C true CN1056962C (en) | 2000-10-04 |
Family
ID=5167878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97105377A Expired - Fee Related CN1056962C (en) | 1997-07-23 | 1997-07-23 | Fresh keeping agent for litchi and longan and its use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1056962C (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067232C (en) * | 1998-10-28 | 2001-06-20 | 华南农业大学 | Processing method of dried red peel litchi |
| CN1096235C (en) * | 2000-03-11 | 2002-12-18 | 梅龙 | Litchi chinensis fresh-preserved selling method by using air-regulation type high-isolation bag |
| 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 |
| CN1324969C (en) * | 2004-07-28 | 2007-07-11 | 中国农业大学 | Fruit freshness preserving suspension emulsion and its preparing method |
| CN100340173C (en) * | 2005-01-28 | 2007-10-03 | 广东省农业科学院果树研究所 | Keeping fresh and protecting color for fruits of longan |
| CN101223908B (en) * | 2008-01-25 | 2010-11-17 | 中国农业大学 | Method for quick freezing litchi under low temperature |
| US8057586B2 (en) * | 2008-07-28 | 2011-11-15 | Multisorb Technologies, Inc. | Humidity control for product in a refrigerator |
| CN102177962B (en) * | 2011-03-29 | 2013-10-30 | 广西大学 | Bentonite-based mango preservative and preparation method thereof |
| CN102940031A (en) * | 2012-11-23 | 2013-02-27 | 董德华 | Preservative composition |
| CN103431036A (en) * | 2013-08-23 | 2013-12-11 | 南通市康桥油脂有限公司 | Citrus antistaling agent |
| CN103689076B (en) * | 2013-12-16 | 2015-07-01 | 苏州安特实业有限公司 | Long-acting fruit coolant and preparation method thereof |
| CN103689070B (en) * | 2013-12-16 | 2015-11-04 | 苏州安特实业有限公司 | Antistaling agent for litchi and preparation method thereof |
| CN103734290B (en) * | 2013-12-25 | 2015-10-28 | 广西科技大学 | A kind of antistaling agent for litchi |
| CN103815008A (en) * | 2014-02-28 | 2014-05-28 | 东北林业大学 | Preparation method of non-contact carbon-based fruit and vegetable antistaling agent |
| CN104509584A (en) * | 2014-06-30 | 2015-04-15 | 韦舒婷 | Litchi freshness keeping method |
| CN104886240A (en) * | 2015-05-07 | 2015-09-09 | 魏士威 | Longan antistaling agent |
| CN106306001A (en) * | 2016-08-23 | 2017-01-11 | 陈小洁 | Longan preservative |
| CN106798001A (en) * | 2016-12-08 | 2017-06-06 | 高州市燊马生态农业发展有限公司 | A kind of preservation method of lichee |
| CN106923133A (en) * | 2017-05-12 | 2017-07-07 | 南京晓庄学院 | A kind of method for controlling mushroom to adopt rear brown stain |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153600A (en) * | 1996-10-29 | 1997-07-09 | 山西省农业科学院农产品贮藏保鲜研究所 | Fresh litchi preserving method |
-
1997
- 1997-07-23 CN CN97105377A patent/CN1056962C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153600A (en) * | 1996-10-29 | 1997-07-09 | 山西省农业科学院农产品贮藏保鲜研究所 | Fresh litchi preserving method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1170505A (en) | 1998-01-21 |
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