CN203136933U - Vacuum freeze-drying system for color-protecting and drying of bamboo fungus - Google Patents
Vacuum freeze-drying system for color-protecting and drying of bamboo fungus Download PDFInfo
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- CN203136933U CN203136933U CN 201320118768 CN201320118768U CN203136933U CN 203136933 U CN203136933 U CN 203136933U CN 201320118768 CN201320118768 CN 201320118768 CN 201320118768 U CN201320118768 U CN 201320118768U CN 203136933 U CN203136933 U CN 203136933U
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Abstract
The utility model provides a vacuum freeze-drying system for color-protecting and drying of bamboo fungus. The vacuum freeze-drying system comprises a freeze-drying chamber and a low-temperature condenser, wherein the freeze-drying chamber is connected with the low-temperature condenser through a pipeline and a vacuum valve; the freeze-drying chamber further is connected with a heat exchanger, a refrigeration compressor and a water cooler through pipelines; a vacuum gauge is arranged on the freeze-drying chamber; a shelf is arranged in the freeze-drying chamber; the low-temperature condenser is a sealed container, and connected with the refrigeration compressor, the water cooler and the heat exchanger through pipelines; and the low-temperature condenser is further connected with a vacuum pump through a pipeline. The vacuum freeze-drying system is capable of obviously alleviating brown stain of a dry bamboo fungus product, improving the appearance and color as well as luster of the product, enabling bamboo fungus to keep even color and luster and loose tissue, and also keeping the loss of crude protein and crude polysaccharides in bamboo fungus low, by performing color-protecting treatment on bamboo fungus before drying; besides, the vacuum freeze-drying system is capable of maintaining special fragrance of bamboo fungus; and the dry bamboo fungus is capable of being rehydrated in short time and the recovery rate is high.
Description
Technical field
The utility model relates to food vacuum Freeze Drying Technique field, is specially a kind of vacuum freeze-drying system that protects look and drying for dictyophora phalloidea.
Background technology
Dictyophora phalloidea is described as " queen in the flower of fungi, the bacterium ", is a kind of very famous and precious edible mushroom, is rich in several amino acids, multivitamin and trace element.Dictyophora phalloidea is after gathering, owing to still keeping the activity of body, carry out respiration and enzyme biochemical reaction, cause brown stain, softening, corrupt easily, degradation under local flavor and the quality, cause the bright product of fructification to have characteristics perishable, that freshness date is short, thus must carry out drying processing to dictyophora phalloidea, to prolong the storage life of product.But the dictyophora phalloidea color is whiter, occurs browning phenomenon in dry run easily, easily influences the quality of dictyophora phalloidea and reduces its trade dress.
Processing in early stage of dictyophora phalloidea handled normally adopt the color stabilizer that contains sulfur dioxide (as sodium pyrosulfite etc.).Though it is better that the method is protected chromatic effect, has the residual of sulfur dioxide in the product, and health is had certain harm.The dry heated-air drying technology of then always continuing to use of handling of the aquatic foods product in later stage.In practice in the past, though the method less investment, the simple easy operating of technological process, the dictyophora phalloidea commodity after processing is handled is not good.The nutritional labeling and the vitamin that mainly show as in the dictyophora phalloidea are very easily destroyed, color and luster is yellow partially, volatile aroma loss in the dictyophora phalloidea fructification is serious, particularly fructification after treatment, the appearance shrinkage forms fine and close duricrust, the rehydration poor performance, original color, shape in the time of can't keeping fresh cause its due high-end price of dictyophora phalloidea significantly to drop.
The utility model content
The technical problem that the utility model solves is to provide a kind of and protects the vacuum freeze-drying system of look and drying for dictyophora phalloidea, to solve the problem that proposes in the above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
A kind of vacuum freeze-drying system that protects look and drying for dictyophora phalloidea, comprise freeze drying chamber and low-temperature condenser, described freeze drying chamber links to each other with low-temperature condenser by pipeline, vacuum valve, described freeze drying chamber also links to each other with heat exchanger, refrigeration compressor and water cooler by pipeline, freeze drying chamber is provided with vacuum meter, the indoor shelf that is provided with of freeze drying; Described low-temperature condenser is the container of a sealing, and low-temperature condenser links to each other with refrigeration compressor, water cooler and heat exchanger by pipeline, and low-temperature condenser also links to each other with vavuum pump by pipeline.
Preferably, described low-temperature condenser is provided with defroster, dump valve and hot-air device for blowing.
Beneficial effect:
The utility model is handled by before drying dictyophora phalloidea being protected look, and the brown stain that can alleviate the dictyophora phalloidea dried product significantly improves the appearance luster of product, can make dictyophora phalloidea keep color and luster homogeneous, tissue looseness, and the crude protein in the dictyophora phalloidea and thick polysaccharide loss are less; Can keep the distinctive fragrance of dictyophora phalloidea, rehydration at short notice, return rate can reach about 85% of fresh bamboo fungi, and fructification is full, quality is soft, can keep the original color of fresh bamboo fungi, shape substantially.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
In order to make realization technological means of the present utility model, creation characteristic, to reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, a kind of vacuum freeze-drying system that protects look and drying for dictyophora phalloidea, comprise freeze drying chamber 1 and low-temperature condenser 2, described freeze drying chamber 1 links to each other with low-temperature condenser 2 by pipeline, vacuum valve 3, described freeze drying chamber 1 also links to each other with heat exchanger 4, refrigeration compressor 5 and water cooler 6 by pipeline, freeze drying chamber 1 is provided with vacuum meter 9, is provided with shelf 8 in the freeze drying chamber 1; Described low-temperature condenser 2 is the container of a sealing, and low-temperature condenser 2 links to each other with heat exchanger 4, refrigeration compressor 5 and water cooler 6 by pipeline, and low-temperature condenser 2 also links to each other with vavuum pump 7 by pipeline.Described low-temperature condenser 2 is provided with defroster, dump valve and hot-air device for blowing.
The utility model operating process mainly is divided into three phases:
Phase I: pre-freeze process.Material is at first wanted pre-freeze, vacuumizes again.Because a large amount of moisture is contained in material inside, if vacuumize earlier, can make the gas that is dissolved in the water overflow the formation bubble very soon because ambient pressure reduces and form " boiling " state.Absorb self heat again during water evaporates and build-up ice, ice re-vaporization, product foaming tympanites then, the inner increased number of stomata that forms.The temperature of pre-freeze selects to be lower than about 5 ℃ of the eutectic points of material.Different because of the temperature of shelf, the sufficient pre-freeze time need be arranged, count about about 2 hours of pre-freeze time from being lower than temperature of eutectic point.The speed control of pre-freeze descends 1～4 ℃ at per minute and is advisable, and crossing to exceed to hang down all can influence product quality, and the pre-freeze speed of different materials should be determined by test.Phase I is cooling, reduction of speed process.
Second stage: sublimation process.Material pre-freeze then vacuumizes after finishing, and enters drying process.In this stage, temperature remains unchanged, and gets rid of frozen water content, and this stage is the constant speed process.Need absorb heat by the ice direct boiling, should begin to heat this moment, keeps in the freeze drying chamber 1 temperature to approach and be lower than the material temperature of eutectic point again.If do not heat, temperature of charge descends, and then rate of drying descends, and prolongs drying time.If over-heating, then temperature of charge rises, and surpasses plait point, causes local melting, volume-diminished and foaming.Because 1g ice produces 9500L steam when 1313Pa pressure, volume is big, and it is uneconomic getting rid of with the standard machinery pump, thereby adopts low-temperature condenser 2, comes condensate water steam with the surface of its cooling, makes it condense into frost, remains on-40 ℃ or lower.Vapour pressure in the low-temperature condenser 2 reduces and remains on the certain level, and the vapour pressure height in the hothouse forms pressure reduction, so a large amount of water vapours constantly enters low-temperature condenser 2 in the freeze drying chamber 1.
Phase III: residual moisture evaporation heating process.Experiment showed, the portion of water in the biological tissue, even under extremely low temperature, also can not be converted into ice, this part moisture needs heating evaporation.After frozen water content all distilled, product was finalized the design, and can accelerate firing rate.When evaporating the moisture that does not freeze, rate of drying descends, and moisture is constantly got rid of, and temperature raises gradually, generally should not be above 40 ℃.Kept 2～3 hours dry the end behind temperature to 30～35 ℃.Can destroy vacuum this moment, takes out dry material, under atmospheric pressure low-temperature condenser heated, and frost dissolved into water get rid of.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.Claimed scope of the present utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. one kind is used for the vacuum freeze-drying system that dictyophora phalloidea is protected look and drying, comprise freeze drying chamber and low-temperature condenser, it is characterized in that: described freeze drying chamber links to each other with low-temperature condenser by pipeline, vacuum valve, described freeze drying chamber also links to each other with heat exchanger, refrigeration compressor and water cooler by pipeline, freeze drying chamber is provided with vacuum meter, the indoor shelf that is provided with of freeze drying; Described low-temperature condenser is the container of a sealing, and low-temperature condenser links to each other with refrigeration compressor, water cooler and heat exchanger by pipeline, and low-temperature condenser also links to each other with vavuum pump by pipeline.
2. according to claim 1ly a kind ofly protect look and dry vacuum freeze-drying system for dictyophora phalloidea, it is characterized in that: described low-temperature condenser is provided with defroster, dump valve and hot-air device for blowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320118768 CN203136933U (en) | 2013-03-15 | 2013-03-15 | Vacuum freeze-drying system for color-protecting and drying of bamboo fungus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320118768 CN203136933U (en) | 2013-03-15 | 2013-03-15 | Vacuum freeze-drying system for color-protecting and drying of bamboo fungus |
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| CN203136933U true CN203136933U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320118768 Expired - Fee Related CN203136933U (en) | 2013-03-15 | 2013-03-15 | Vacuum freeze-drying system for color-protecting and drying of bamboo fungus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103948142A (en) * | 2014-05-13 | 2014-07-30 | 徐玉文 | Freezing and drying process of bamboo fungus |
| CN104905391A (en) * | 2015-06-08 | 2015-09-16 | 云南农业大学 | Method for freezing and drying amomum tsaoko |
| CN106579489A (en) * | 2016-12-13 | 2017-04-26 | 绵阳安福魔芋开发有限公司 | Konjak drying equipment and process thereof |
| CN112724272A (en) * | 2021-01-19 | 2021-04-30 | 吉林大学珠海学院 | Preparation method of bamboo fungus polysaccharide |
| CN114521626A (en) * | 2022-02-26 | 2022-05-24 | 贵阳学院 | Dictyophora rubrovalvata color protection liquid and application thereof in drying process |
-
2013
- 2013-03-15 CN CN 201320118768 patent/CN203136933U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103948142A (en) * | 2014-05-13 | 2014-07-30 | 徐玉文 | Freezing and drying process of bamboo fungus |
| CN103948142B (en) * | 2014-05-13 | 2015-10-14 | 徐玉文 | The freeze drying process of dictyophora phalloidea |
| CN104905391A (en) * | 2015-06-08 | 2015-09-16 | 云南农业大学 | Method for freezing and drying amomum tsaoko |
| CN106579489A (en) * | 2016-12-13 | 2017-04-26 | 绵阳安福魔芋开发有限公司 | Konjak drying equipment and process thereof |
| CN106579489B (en) * | 2016-12-13 | 2019-02-01 | 绵阳安福魔芋开发有限公司 | Konjaku drying equipment and its technique |
| CN112724272A (en) * | 2021-01-19 | 2021-04-30 | 吉林大学珠海学院 | Preparation method of bamboo fungus polysaccharide |
| CN114521626A (en) * | 2022-02-26 | 2022-05-24 | 贵阳学院 | Dictyophora rubrovalvata color protection liquid and application thereof in drying process |
| CN114521626B (en) * | 2022-02-26 | 2024-05-17 | 贵阳学院 | Dictyophora rubrovalvata color protection liquid and application thereof in drying process |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20140315 |