CN106962465A - The preservation method of lotus root band - Google Patents
The preservation method of lotus root band Download PDFInfo
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- CN106962465A CN106962465A CN201710318922.0A CN201710318922A CN106962465A CN 106962465 A CN106962465 A CN 106962465A CN 201710318922 A CN201710318922 A CN 201710318922A CN 106962465 A CN106962465 A CN 106962465A
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- lotus root
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- crisp
- preservation method
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/04—Freezing; Subsequent thawing; Cooling
- A23B7/05—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals other than cryogenics, before or during cooling, e.g. in the form of an ice coating or frozen block
- A23B7/055—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals other than cryogenics, before or during cooling, e.g. in the form of an ice coating or frozen block with direct contact between the food and the chemical, e.g. liquid nitrogen, at cryogenic temperature
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
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- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Preparation Of Fruits And Vegetables (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Abstract
The invention discloses the preservation method of lotus root band.The preservation method comprises the following steps：Insert and color retention is carried out in colour protecting liquid, colour protecting liquid includes water, and counts by 100wt% of the quality of water 1~3wt% white granulated sugars and 0.2~0.5wt% citric acids；Insert the crisp liquid of shield and carry out the crisp processing of shield, protect crisp liquid and include water, and count by 100wt% of the quality of water 1~3wt% white granulated sugars, 0.2~0.6wt% calcium chloride, 0.1~0.5wt% citric acids；With freezing liquid Superfreezing.The preservation method of the present invention, first color retention and the crisp processing of shield, use again in freezing liquid and carry out Superfreezing, the time that area is generated by the maximum ice crystal of lotus root bamboo shoot can so be shortened, promote ice crystal many and tiny, ICW distribution close to it is fresh when moisture distribution state so that completely preservation cell tissue structure, enzyme activity is suppressed, and the intrinsic sharp and clear local flavor and freshness of lotus root bamboo shoot are substantially preserved.
Description
Technical field
The present invention relates to the technical field of food processing, in particular to the preservation method of lotus root band.
Background technology
Lotus root band, scientific name lotus root whip, also known as lotus root bamboo shoot, lotus root beam, lotus root are covered with mat, lotus root knot, lotus mark, lotus root intestines, are the subterranean stems of lotus, grow wild in
In mud, and constantly branch spreads.This subterranean stem is delicate elongated in growth early stage, i.e. lotus root band, to the later stage, its stem and point
Branch top is stretched over lake mud depths, and internode more length is more fat, as lotus root.Lotus root bamboo shoot make special vegetable and eaten, and taste is fresh and crisp tasty and refreshing, there is spy
Different local flavor, it is nutritious, it is deep to be liked by consumers in general.Because being limited by region, eating habit and season, on
The consumption and processing of lotus root bamboo shoot are concentrated mainly on Hubei, especially in Wuhan City and its surrounding area, concentrate with clean vegetables form processing, main
Clean, commercially sell after being plucked with peasant household, only just have supply in the market of April~September part every year, can not expire
The present consumption demand of foot.With expanding economy, increasing lotus root bamboo shoot dealer sees business opportunity, it is desirable to be able to lotus root bamboo shoot
Studied and processed, to lift its value.
However, lotus root bamboo shoot are different from ripe lotus root, as the lotus root of early growth period, its various physical signs is not reaching to wanting for lotus root
Ask.Lotus root is substantially exceeded in the respiratory intensity of early growth period lotus root bamboo shoot, hardness is also big without lotus root, but moisture is big, belongs to plant
In the primary growth stage, the tender shoots Ji Wei lotus root is said in a certain sense.These characteristics determine that the more ripe lotus root of lotus root bamboo shoot is more difficult to processing
With storage.Easily brown stain and softening, influence product quality and shelf life, bring to processing and inevitably ask after the harvesting of lotus root bamboo shoot
Topic, so being generally concentrated at this respect to its research and processing.
Because the research and consumption to lotus rhizome are concentrated mainly on China, foreign study is very few, domestic main grinding with lotus rhizome
Based on studying carefully.Value on lotus root bamboo shoot is just to be found recent years, and its research does not also deploy correspondingly, the development of lotus root bamboo shoot at present
Or based on eating raw.At home and abroad other places have not found the large-scale processing of lotus root bamboo shoot at present, more rarely seen in lotus root
The research of bamboo shoot.
The processing method that some lotus root bamboo shoot are disclosed on known technology document, such as Chinese Patent Application No. 201010228981.7
A kind of lotus root is disclosed with antistaling agent and with the method for its fresh-keeping lotus root band, lotus root band antistaling agent, is the lemon containing 20~40g in 1000g water
Lemon acid, 4~7g vitamin Cs, the mixed liquor of 10~25g calcium chloride.The step of its preservation method, is as follows：1) after lotus root band is cleaned,
Remove lotus root head and tail portion, be put into 1~8 DEG C of environment, 2) lotus root band and lotus root band antistaling agent mix after pack or tinning, lotus root is with antistaling agent
It is to contain 20~40g citric acids, 4~7g vitamin Cs, the mixed liquor of 10~25g calcium chloride in 1000g water, lotus root band is with lotus root with fresh-keeping
The weight ratio of liquid is 1: 0.30~0.55,3) microwave disinfection 3~15 minutes, microwave frequency 2450MHz, 1~5kw of microwave power.
Above in the prior art, preservation method fails preferably to keep the intrinsic sharp and clear local flavor and freshness of lotus root band.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of preservation method of lotus root band, and the preservation method can be compared with
The intrinsic sharp and clear local flavor and freshness of lotus root band are kept well.
A kind of preservation method of lotus root band, comprises the following steps：
Lotus root band former material is inserted color retention is carried out in colour protecting liquid, the colour protecting liquid includes water, and using the quality of water as
100wt% counts 1~3wt% white granulated sugars and 0.2~0.5wt% citric acids；
Lotus root band through the color retention is inserted into the crisp liquid of shield to carry out protecting crisp processing, the crisp liquid of shield includes water, and with water
Quality count 1~3wt% white granulated sugars, 0.2~0.6wt% calcium chloride, 0.1~0.5wt% citric acids for 100wt%；
Lotus root band through the crisp processing of shield is inserted Superfreezing is carried out in freezing liquid.
Further, the colour protecting liquid also includes ascorbic acid and sodium chloride.
Further, the time of the color retention is 1~2h.
Further, the crisp liquid of shield also includes 0.8~1.2wt% sodium alginates, is counted using the quality of water as 100wt%.
Further, the time of the crisp processing of shield is 30~40min.
Further, the temperature of the Superfreezing is -55~-45 DEG C, and the time of Superfreezing is 10~15min.
Further in being additionally included in before the Superfreezing at -5~3 DEG C and carry out precooling 1~2h.
Further, it is additionally included in clear water and soaks after the crisp processing of shield.
Further, the temperature of the immersion is 1~3 DEG C, and the time of immersion is 20~40min.
Further, segment is also included before the color retention, the segment is carried out in water.
The preservation method of the present invention, first through carrying out color retention and using white granulated sugar using the colour protecting liquid containing white granulated sugar
Protect crisp liquid and carry out the crisp processing of shield, then using Superfreezing is carried out in freezing liquid, can so shorten and be given birth to by the maximum ice crystal of lotus root bamboo shoot
Into the time in area, promote ice crystal many and tiny, ICW distribution close to it is fresh when moisture distribution state, so as to completely protect
Cell tissue structure is deposited, enzyme activity is suppressed, the intrinsic sharp and clear local flavor and freshness of lotus root bamboo shoot are substantially preserved.
Embodiment
Unless otherwise defined, all technologies used herein and scientific terminology have and the common skill of art of the present invention
The identical implication that art personnel are generally understood that.When there is contradiction, the definition in this specification is defined.
Term as used herein：
" by ... prepare " it is synonymous with "comprising".Term "comprising" used herein, " comprising ", " having ", " containing "
Or its any other deformation, it is intended that cover including for non-exclusionism.For example, composition, step, method comprising listed elements,
Product or device are not necessarily limited to those key elements, but can include not expressly listed other key elements or such a composition, step
Suddenly, method, product or the intrinsic key element of device.
Conjunction " by ... constitute " exclude any key element do not pointed out, step or component.If be used in claim,
This phrase will make claim be closed, it is not included the material in addition to materials of those descriptions, but relative
Except customary impurities.When phrase " by ... constitute " be rather than immediately following theme in the clause that appears in claim main body after
When, it is only limited to the key element described in the clause；Other key elements be not excluded as the overall claim it
Outside.
Equivalent, concentration or other values or parameter are excellent with scope, preferred scope or a series of upper limit preferred values and lower limit
During the Range Representation that choosing value is limited, this, which is appreciated that, specifically discloses by any range limit or preferred value and any scope
All scopes that any pairing of lower limit or preferred value is formed, regardless of whether whether the scope separately discloses.For example, when open
Scope " when 1~5 ", described scope should be interpreted as including scope " 1~4 ", " 1~3 ", " 1~2 ", " 1~2 and 4~
5 ", " 1~3 and 5 " etc..When number range is described herein, unless otherwise indicated, otherwise the scope is intended to include its end
Value and all integers and fraction within the range.
" mass parts " refer to the basic measurement unit for the mass ratio relation for representing multiple components, and 1 part can represent arbitrary list
Position quality, can such as be expressed as 1g, may also indicate that 2.689g etc..If we say that the mass parts of component A are a parts, the matter of B component
It is b parts to measure part, then it represents that the quality of component A and the mass ratio a of B component：b.Or, the quality for representing component A is aK, B groups
The quality divided is bK (K is Arbitrary Digit, represents multiplying factor).It can not misread, and unlike mass fraction, all components
Mass parts sum be not limited to 100 parts of limitation.
"and/or" is used to represent that one of illustrated situation or both may to occur, for example, A and/or B includes (A
And B) and (A or B)；
In addition, the indefinite article " one kind " and " one " before key element of the present invention or component are to key element or the quantitative requirement of component
(i.e. occurrence number) unrestriction.Therefore " one " or " one kind " should be read as including one or at least one, and odd number
The key element or component of form also include plural form, unless the obvious purport of the quantity refers to singulative.
The preservation method of lotus root band of the embodiment of the present invention, comprises the following steps：
Lotus root band former material is inserted color retention is carried out in colour protecting liquid, the colour protecting liquid includes water, and using the quality of water as
100wt% counts 1~3wt% white granulated sugars and 0.2~0.5wt% citric acids；
Lotus root band through the color retention is inserted into the crisp liquid of shield to carry out protecting crisp processing, the crisp liquid of shield includes water, and with water
Quality count 1~3wt% white granulated sugars, 0.2~0.6wt% calcium chloride, 0.1~0.5wt% citric acids for 100wt%；
Lotus root band through the crisp processing of shield is inserted Superfreezing is carried out in freezing liquid.
In the step of above-mentioned color retention, the white sugar that colour protecting liquid is included can reduce oxygen concentration in soak, strengthen color protection
Effect.The solute of ascorbic acid and sodium chloride can be also included in effect of color protection, colour protecting liquid in order to improve, can basis as its consumption
It is actually needed and selects.
The time of color retention is conveniently 1~2h, preferably 1.5h.
Before the step of color retention, segment processing can be carried out to lotus root band, the big I of segment is 1.5cm~2cm,
For tiny lotus root bamboo shoot, its staple fiber ppd 2.5cm.
It is understood that before segment processing, can also be cleaned.
In the step of above-mentioned shield crisp processing, oxygen concentration in soak can be reduced by protecting the white sugar that crisp liquid included, and reinforcing shield is crisp
Effect.In order to strengthen the crisp effect of shield, the solute of 0.8~1.2wt% sodium alginates can also be included by protecting in crisp liquid, using the quality of water as
100wt% is counted.
The time for protecting crisp processing is conveniently 30~40min.
After crisp processing is protected, in addition to clear water is the step of rinse, for example, lotus root band can be transferred in stainless steel pond
Immersion 30min in clean cold water (2 ± 1 DEG C).
The effect that above-mentioned use freezing liquid carries out Superfreezing is that its chilling rate goes out four times soon, can be in the most short time
Interior to generate area by the maximum ice crystal of lotus root bamboo shoot, ice crystal is more and tiny, ICW distribution close to it is fresh when moisture distribution state,
Cell tissue structural integrity is preserved, and enzyme activity is suppressed.The color, smell, taste and shape of lotus root band moment in Superfreezing is fixed, and is hereafter preserved
State when period, it was constantly in fresh harvesting.
The temperature of Superfreezing is preferably -55~-45 DEG C, is preferably -50 DEG C.At a temperature of this, Superfreezing when
Between be 10~15min.Superfreezing at this temperature enables to lotus root bamboo shoot central temperature to reach -17 DEG C~-18 DEG C.
Above-mentioned freezing liquid can keep the material of liquid (to include pure substance or combination using all under the cryogenic temperature
Thing etc.).The embodiment of several freezing liquids can be included, the freezing liquid described in Chinese patent CN103865495A is can refer to, wrapped
Containing fructose syrup 22%~25%, ethanol 23%~25%, sodium chloride 5%~8%, gelatin hydrolysate 1.5%~2% and surplus
Water.Or freezing liquid as described in Chinese patent CN101965859A is referred to, the freezing liquid includes edible alcohol 7.89g/
100mL~23.67g/100mL (or 10~30mL/100mL), sucrose 4g/100mL~6g/100mL, salt 0.5g/100mL
~2g/100mL and surplus distilled water.Or ground can refer to the freezing liquid as described in Chinese patent CN104522141A, this is cold
Freeze liquid composition and percentage by weight be：Sodium chloride 10~18%, concentration be 98% ethanol 8~25%, glycerine 10~30%,
Edible sucrose 3~5%, sodium tripolyphosphate 0.2~1%, remaining is water.
Superfreezing is carried out with freezing liquid in the present invention, it is to avoid the liquid nitrogen freezing of direct fountain brought to freezing
The higher requirement of equipment.
It is additionally included in before Superfreezing at -5~3 DEG C and carries out 1~2h of precooling.Precooling lotus root bamboo shoot central temperature reaches
2℃.Precooling can be provided for the Superfreezing of lotus root band one buffering environment, it is to avoid the tissue that Superfreezing is brought by
Destruction.
It is easily understood that the lotus root band of precooling is preferably packed.Packaging can be vacuum packaging, such as vacuum bag
Specification is 20cm × 30cm × 10cm (thickness), 0.065~0.075MPa of vacuum.
After Superfreezing, conventional refrigeration just can be inserted.Refrigeration can be inserted in -17 DEG C~-19 DEG C freezers.
The lotus root band of preservation method by the present invention can carry out preferably frying.For example, blanching 1s~2s in boiling water, so
The quick-fried 2min together with oil, salt, garlic solvent, can add capsicum, lean meat or other main and supplementary materials according to personal taste afterwards.
Embodiment 1
Step 1: raw material screening.Selection white, non-rot, the serious rust stainings of Kong Zhongwu, tissue is without impaired fresh lotus root
Bamboo shoot, are suitably classified by pore size.
Step 2: cleaning.The silt and residue rinsed with clear water in lotus root bamboo shoot surface and aperture, then puts into stainless steel pond
Middle use colour protecting liquid (by the colour protecting liquid used in color retention described later) further clean, removal rot, get rusty, foxiness,
Soften water part.
Step 3: segment.Thick lotus root band is cut into length 1.5cm~2cm in water, tiny lotus root bamboo shoot are cut into length 2.5cm.
Step 4: color protection.Lotus root band is inserted into progress color retention 1h in colour protecting liquid, wherein, colour protecting liquid includes water, and with water
Quality count 3wt% white granulated sugars and 0.2wt% citric acids and appropriate ascorbic acid and sodium chloride for 100wt%.
Step 5: shield is crisp.Lotus root band through the color retention is inserted into the crisp liquid of shield to carry out protecting crisp processing 40min, wherein, shield
Crisp liquid includes water, and count by 100wt% of the quality of water 1wt% white granulated sugars, 0.6wt% calcium chloride, 0.5wt% citric acids and
1.2wt% sodium alginates.
Step 6: clear water is rinsed.Color protection protect it is crisp after 1 DEG C of clean cold water being transferred in stainless steel pond of lotus root bamboo shoot in soak
40min。
Step 7: draining and vacuum packaging.After mesh screen draining, mono- bag of packaging seal of 350g, tiling lotus root of being tried one's best during pack
Bamboo shoot, control as thickness in monolayer, and vacuum bag specification is 20cm × 30cm × 10c (thickness), 0.065~0.075MPa of vacuum.
Step 8: precooling.Lotus root bamboo shoot after packaging insert precooling 1h in -5 DEG C of freezers or frozen water, reach lotus root bamboo shoot central temperature
2℃。
Step 9: the lotus root band of pre-cooled processing, which is inserted in -55 DEG C of freezing liquid, carries out Superfreezing 10min.
Step 10: cold storage.Lotus root bamboo shoot after Superfreezing load bubble chamber immediately, seal with adhesive tape, and are put into -19 DEG C of freezer jellies
Hide, during which avoid temperature from fluctuating widely.
Embodiment 2
Step 1: raw material screening.Selection white, non-rot, the serious rust stainings of Kong Zhongwu, tissue is without impaired fresh lotus root
Bamboo shoot, are suitably classified by pore size.
Step 2: cleaning.The silt and residue rinsed with clear water in lotus root bamboo shoot surface and aperture, then puts into stainless steel pond
Middle use colour protecting liquid (by the colour protecting liquid used in color retention described later) further clean, removal rot, get rusty, foxiness,
Soften water part.
Step 3: segment.Thick lotus root band is cut into length 1.5cm~2cm in water, tiny lotus root bamboo shoot are cut into length 2.5cm.
Step 4: color protection.Lotus root band is inserted into progress color retention 2h in colour protecting liquid, wherein, colour protecting liquid includes water, and with water
Quality count 1wt% white granulated sugars and 0.5wt% citric acids and appropriate ascorbic acid and sodium chloride for 100wt%.
Step 5: shield is crisp.Lotus root band through the color retention is inserted into the crisp liquid of shield to carry out protecting crisp processing 40min, wherein, shield
Crisp liquid includes water, and count by 100wt% of the quality of water 3wt% white granulated sugars, 0.2wt% calcium chloride, 0.1wt% citric acids and
1.2wt% sodium alginates.
Step 6: clear water is rinsed.Color protection protect it is crisp after 3 DEG C of clean cold water being transferred in stainless steel pond of lotus root bamboo shoot in soak
20min。
Step 7: draining and vacuum packaging.After mesh screen draining, mono- bag of packaging seal of 350g, tiling lotus root of being tried one's best during pack
Bamboo shoot, control as thickness in monolayer, and vacuum bag specification is 20cm × 30cm × 10c (thickness), 0.065~0.075MPa of vacuum.
Step 8: precooling.Lotus root bamboo shoot after packaging insert precooling 2h in 3 DEG C of freezers or frozen water, lotus root bamboo shoot central temperature is reached 2
℃。
Step 9: the lotus root band of pre-cooled processing, which is inserted in -45 DEG C of freezing liquid, carries out Superfreezing 15min.
Step 10: cold storage.Lotus root bamboo shoot after Superfreezing load bubble chamber immediately, seal with adhesive tape, and are put into -19 DEG C of freezer jellies
Hide, during which avoid temperature from fluctuating widely.
Embodiment 3
Step 1: raw material screening.Selection white, non-rot, the serious rust stainings of Kong Zhongwu, tissue is without impaired fresh lotus root
Bamboo shoot, are suitably classified by pore size.
Step 2: cleaning.The silt and residue rinsed with clear water in lotus root bamboo shoot surface and aperture, then puts into stainless steel pond
Middle use colour protecting liquid (by the colour protecting liquid used in color retention described later) further clean, removal rot, get rusty, foxiness,
Soften water part.
Step 3: segment.Thick lotus root band is cut into length 1.5cm~2cm in water, tiny lotus root bamboo shoot are cut into length 2.5cm.
Step 4: color protection.Lotus root band is inserted into colour protecting liquid progress color retention 1.5h, wherein, colour protecting liquid includes water, and with
The quality of water is that 100wt% counts 2wt% white granulated sugars and 0.2wt% citric acids and appropriate ascorbic acid and sodium chloride.
Step 5: shield is crisp.Lotus root band through the color retention is inserted into the crisp liquid of shield to carry out protecting crisp processing 35min, wherein, shield
Crisp liquid includes water, and count by 100wt% of the quality of water 2wt% white granulated sugars, 0.6wt% calcium chloride, 0.1wt% citric acids and
0.8wt% sodium alginates.
Step 6: clear water is rinsed.Color protection protect it is crisp after 2 DEG C of clean cold water being transferred in stainless steel pond of lotus root bamboo shoot in soak
30min。
Step 7: draining and vacuum packaging.After mesh screen draining, mono- bag of packaging seal of 350g, tiling lotus root of being tried one's best during pack
Bamboo shoot, control as thickness in monolayer, and vacuum bag specification is 20cm × 30cm × 10c (thickness), 0.065~0.075MPa of vacuum.
Step 8: precooling.Lotus root bamboo shoot after packaging insert precooling 1h in 0 DEG C of freezer or frozen water, lotus root bamboo shoot central temperature is reached 2
℃。
Step 9: the lotus root band of pre-cooled processing, which is inserted in -55 DEG C of freezing liquid, carries out Superfreezing 10min.
Step 10: cold storage.Lotus root bamboo shoot after Superfreezing load bubble chamber immediately, seal with adhesive tape, and are put into -17 DEG C of DEG C of freezers
Cold storage, during which avoids temperature from fluctuating widely.
Embodiment 4
Step 1: raw material screening.Selection white, non-rot, the serious rust stainings of Kong Zhongwu, tissue is without impaired fresh lotus root
Bamboo shoot, are suitably classified by pore size.
Step 2: cleaning.The silt and residue rinsed with clear water in lotus root bamboo shoot surface and aperture, then puts into stainless steel pond
Middle use colour protecting liquid (by the colour protecting liquid used in color retention described later) further clean, removal rot, get rusty, foxiness,
Soften water part.
Step 3: segment.Thick lotus root band is cut into length 1.5cm~2cm in water, tiny lotus root bamboo shoot are cut into length 2.5cm.
Step 4: color protection.Lotus root band is inserted into colour protecting liquid progress color retention 1.5h, wherein, colour protecting liquid includes water, and with
The quality of water is that 100wt% counts 2wt% white granulated sugars and 0.35wt% citric acids and appropriate ascorbic acid and sodium chloride.
Step 5: shield is crisp.Lotus root band through the color retention is inserted into the crisp liquid of shield to carry out protecting crisp processing 35min, wherein, shield
Crisp liquid includes water, and count by 100wt% of the quality of water 2wt% white granulated sugars, 0.4wt% calcium chloride, 0.25wt% citric acids and
1wt% sodium alginates.
Step 6: clear water is rinsed.Color protection protect it is crisp after 2 DEG C of clean cold water being transferred in stainless steel pond of lotus root bamboo shoot in soak
30min。
Step 7: draining and vacuum packaging.After mesh screen draining, mono- bag of packaging seal of 350g, tiling lotus root of being tried one's best during pack
Bamboo shoot, control as thickness in monolayer, and vacuum bag specification is 20cm × 30cm × 10c (thickness), 0.065~0.075MPa of vacuum.
Step 8: precooling.Lotus root bamboo shoot after packaging insert precooling 1.5h in 0 DEG C of freezer or frozen water, reach lotus root bamboo shoot central temperature
To 2 DEG C.
Step 9: the lotus root band of pre-cooled processing, which is inserted in -50 DEG C of freezing liquid, carries out Superfreezing 12min.
Step 10: cold storage.Lotus root bamboo shoot after Superfreezing load bubble chamber immediately, seal with adhesive tape, and are put into -17 DEG C of freezer jellies
Hide, during which avoid temperature from fluctuating widely.
Embodiment 5
Step 1: raw material screening.Selection white, non-rot, the serious rust stainings of Kong Zhongwu, tissue is without impaired fresh lotus root
Bamboo shoot, are suitably classified by pore size.
Step 2: cleaning.The silt and residue rinsed with clear water in lotus root bamboo shoot surface and aperture, then puts into stainless steel pond
Middle use colour protecting liquid (by the colour protecting liquid used in color retention described later) further clean, removal rot, get rusty, foxiness,
Soften water part.
Step 3: segment.Thick lotus root band is cut into length 1.5cm~2cm in water, tiny lotus root bamboo shoot are cut into length 2.5cm.
Step 4: color protection.Lotus root band is inserted into colour protecting liquid progress color retention 1.5h, wherein, colour protecting liquid includes water, and with
The quality of water is that 100wt% counts 2wt% white granulated sugars and 0.35wt% citric acids and appropriate ascorbic acid and sodium chloride.
Step 5: shield is crisp.Lotus root band through the color retention is inserted into the crisp liquid of shield to carry out protecting crisp processing 35min, wherein, shield
Crisp liquid includes water, and count by 100wt% of the quality of water 2wt% white granulated sugars, 0.4wt% calcium chloride, 0.25wt% citric acids and
1wt% sodium alginates.
Step 6: clear water is rinsed.Color protection protect it is crisp after 2 DEG C of clean cold water being transferred in stainless steel pond of lotus root bamboo shoot in soak
30min。
Step 7: draining and vacuum packaging.After mesh screen draining, mono- bag of packaging seal of 350g, tiling lotus root of being tried one's best during pack
Bamboo shoot, control as thickness in monolayer, and vacuum bag specification is 20cm × 30cm × 10c (thickness), 0.065~0.075MPa of vacuum.
Step 8: precooling.Lotus root bamboo shoot after packaging insert precooling 1.5h in 0 DEG C of freezer or frozen water, reach lotus root bamboo shoot central temperature
To 2 DEG C.
Step 9: the lotus root band of pre-cooled processing, which is inserted in -50 DEG C of freezing liquid, carries out Superfreezing 12min.
Step 10: cold storage.Lotus root bamboo shoot after Superfreezing load bubble chamber immediately, seal with adhesive tape, and are put into -18 DEG C of freezer jellies
Hide, during which avoid temperature from fluctuating widely.
The quick-freezing fresh-keeping lotus root band of the present invention can be placed in the refrigerator-freezer of supermarket to be sold together with frozen meat, quick-freezing dumpling etc.,
It can be placed in hotel as distinctive flavour vegetable frying, can also be sold in the case where cold chain is supporting overseas.Utilize liquid immersion type Superfreezing technology
Fresh-keeping lotus root bamboo shoot, break region and season boundary, and crisp taste and intrinsic local flavor when the lotus root band is preserved fresh all the year round, are lotus root
New approach is started with fresh-keeping and deep processing, more its import and export create condition, greatly promote its value.
It is above-mentioned not address part, it is adaptable to prior art.
Because the number range of each technological parameter involved in the present invention can not possibly all embody in the above-described embodiments,
As long as but those skilled in the art's envisioned any numerical value fallen into the above-mentioned number range completely can implement this
Invention, also includes any combination of occurrence in the range of some numerical value certainly.Herein, for the consideration of length, eliminate to
Go out the embodiment of occurrence in certain one or more of number range, this disclosure for being not to be construed as technical scheme is not filled
Point.
Applicant states that the present invention illustrates detailed process equipment and the technological process of the present invention by above-described embodiment,
But the invention is not limited in above-mentioned detailed process equipment and technological process, that is, do not mean that the present invention has to rely on above-mentioned detailed
Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
Addition, concrete mode selection of equivalence replacement and auxiliary element to each raw material of product of the present invention etc., fall the protection in the present invention
In the range of.
Claims (10)
1. a kind of preservation method of lotus root band, it is characterised in that comprise the following steps：
Lotus root band former material is inserted color retention is carried out in colour protecting liquid, the colour protecting liquid includes water, and using the quality of water as 100wt%
Count 1~3wt% white granulated sugars and 0.2~0.5wt% citric acids；
Lotus root band through the color retention is inserted into the crisp liquid of shield to carry out protecting crisp processing, the crisp liquid of shield includes water, and with the matter of water
Measure and count 1~3wt% white granulated sugars, 0.2~0.6wt% calcium chloride, 0.1~0.5wt% citric acids for 100wt%；
Lotus root band through the crisp processing of shield is inserted Superfreezing is carried out in freezing liquid.
2. preservation method according to claim 1, it is characterised in that the colour protecting liquid also includes ascorbic acid and chlorination
Sodium.
3. preservation method according to claim 1, it is characterised in that the time of the color retention is 1~2h.
4. preservation method according to claim 1, it is characterised in that the crisp liquid of shield also includes 0.8~1.2wt% marine algas
Sour sodium, is counted using the quality of water as 100wt%.
5. preservation method according to claim 1, it is characterised in that the time of the crisp processing of shield is 30~40min.
6. preservation method according to claim 1, it is characterised in that the temperature of the Superfreezing is -55~-45 DEG C,
The time of Superfreezing is 10~15min.
7. preservation method according to claim 1, it is characterised in that be additionally included at -5~3 DEG C to enter before the freezing
1~2h of row precooling.
8. preservation method according to claim 1, it is characterised in that be additionally included in clear water and soak after the crisp processing of shield
Bubble.
9. preservation method according to claim 8, it is characterised in that the temperature of the immersion is 1~3 DEG C, immersion when
Between be 20~40min.
10. preservation method according to claim 1, it is characterised in that also include segment before the color retention, described
Segment is carried out in water.
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| CN201710318922.0A CN106962465A (en) | 2017-05-08 | 2017-05-08 | The preservation method of lotus root band |
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| CN107751354A (en) * | 2017-10-30 | 2018-03-06 | 张艳群 | A kind of lotus root point freeze-drying method |
| CN108771099A (en) * | 2018-05-21 | 2018-11-09 | 赵荆江 | A kind of composition and its application method substituting preservative |
| CN110024987A (en) * | 2019-05-17 | 2019-07-19 | 华中农业大学 | A kind of preparation method of the lotus root with original flavor instant food |
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