CN107549305A - A kind of processing storage fresh-keeping method for eating rascal walnut in shell raw and application - Google Patents
A kind of processing storage fresh-keeping method for eating rascal walnut in shell raw and application Download PDFInfo
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- CN107549305A CN107549305A CN201710741872.7A CN201710741872A CN107549305A CN 107549305 A CN107549305 A CN 107549305A CN 201710741872 A CN201710741872 A CN 201710741872A CN 107549305 A CN107549305 A CN 107549305A
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Abstract
The invention provides a kind of processing storage fresh-keeping method for eating rascal walnut in shell raw and application, belong to agricultural products fresh-keeping field.The present invention will be by that will harvest 8 ripe green rind walnuts manually or mechanical removal surface major part rascal, after being soaked with hot alkaline solution, cleaned with hairbrush and water, fully remove walnut remained on surface rascal, impregnated again through mould inhibitor, hot blast drying, suffocating treatment is carried out using 1 methyl cyclopropene in transit after vehicle sealing, loads in the polyethylene packaging bag of 20 30 μm of thickness and is put into Cold storage in the refrigerator.The hot alkaline solution is made up of by 50 90 DEG C 1% 6% sodium hydroxide solution, 0.1% 0.3% sodium radio-phosphate,P-32 solution, 0.1% 0.3% sodium pyrophosphate solution.The present invention is with strong points, convenient to carry out, can make to store 20 30 days under green rind walnut refrigerated condition and keeps preferable quality.
Description
Technical field
The invention belongs to agricultural products fresh-keeping technical field, and in particular to a kind of processing storing for eating rascal walnut in shell raw
Preservation method and application.
Background technology
The walnut kernel mouthfeel of fresh walnut is pure and fresh, delicious and crisp, without greasy feeling, nutritional ingredient retains more compared with drying walnut
Comprehensively, therefore there is fresh-eating walnut the preferable market development to be worth.But fresh-eating walnut is not easy to store after adopting, and especially removes rascal
Afterwards, in the case where lacking the protection of outer layer rascal, benevolence is more easy to dehydration shrinkage, kind skin is more easy to brown stain, and for the ease of removing the peel,
Walnut passes through the mode accelerated the ripening frequently with sprinkling ethephon (CEPHA),2-(chloroethyl) phosphonic acid to accelerate the separation of rascal and inner casing during peeling, but sprays ethene
The senescence process of walnut kernel can be accelerated after profit, so as to aggravate the hair of the adverse reaction such as the consumption of the nutriment of kernel and kind skin brown stain
It is raw, greatly shorten the freshness date of fresh-eating walnut.In order to avoid the harmful effect that ethephon (CEPHA),2-(chloroethyl) phosphonic acid accelerates the ripening, also there is part producer in production
Rascal is removed using the method for direct machine barking, but because rascal and inner casing are tightly combined directly during peeling, and inner casing
Surface irregularity, it is difficult to which rascal is removed completely, the rascal of residual easily causes in storage to go mouldy, equally can be to production
The commodity value of product impacts.Therefore, eat the market value for removing the peel walnut raw to develop, be badly in need of a kind of extend and eat green grass or young crops raw
The processing and antistaling method of skin walnut in shell shelf life.
The content of the invention
The purpose of the present invention be for eat raw shell in rascal walnut in shell storage easily go mouldy, the easy dehydration of benevolence,
Rascal walnut in shell shelf life is eaten in a kind of extension with strong points, convenient to carry out of the bad problem exploitation such as the kind easy brown stain of skin raw
Peeling, preservation method.
To achieve the above object, the invention discloses following technology contents：
A kind of processing storage fresh-keeping method for eating rascal walnut in shell raw, it is characterised in that be rascal when walnut 8 is ripe with
Harvested, removed the peel as follows after harvesting, Preservation Treatment when inner casing not yet separates：
（1）Walnut after harvesting is directly either manually or mechanically removed into most of rascal, the walnut for removing rascal is put into 50-90
DEG C by 1%-6%（w/w）Sodium hydroxide solution, 0.1%-0.3%（w/w）Sodium radio-phosphate,P-32 solution, 0.1%-0.3%（w/w）'s
Soaked the 30-90 seconds in the solution of sodium pyrophosphate solution composition, then washing, then remained on surface rascal is brushed away with hairbrush；
（2）Walnut after removal rascal is put into 1%-2%（w/w）Propionic acid calcium solution in impregnate the 30-60 seconds after pull rapid use out
More than 80 DEG C hot blast drying surface moistures；
（3）By the rapid entrucking of walnut after drying, and add 1- methyl by valid density 300-600 ppb explosive payload in the car
Compartment is sealed after cyclopropylene, suffocating treatment is carried out to walnut during long-distance transport；
（4）After walnut is transported to destination, walnut is put into freezer and spreads precooling out 24 hours, load the poly- of 20-30 μm of one side thickness
Stored in vinyl packing bag, the packaging bag need to respectively press in both sides and make a call to a diameter 0.5- per in 10-20 sqs
1.0 cm hole, to avoid dew condensation phenomenon caused by temperature fluctuation.
Addition sodium phosphate can improve peeling energy with sodium pyrophosphate in the case where reducing concentration of lye wherein in step (1)
Power.Hot blast drying time control described in step (2) is below 3 minutes.1- methyl rings during step (3) described suffocating treatment
Propylene valid density is 300-500 ppb, and encapsulation process mode is：The direct closed door sealing of refrigerator car, the non-box goods of normal temperature
The polyethylene film that car covers 40-80 μm of a layer thickness in its surrounding is sealed.
The present invention further discloses ensureing green rind walnut 0-5 using the fresh-keeping method for storage and transportation of protecting green lands of fresh wet green rind walnut
The application of pure white, the clear and melodious fresh fragrant aspect of 20-30 days kernels is stored under DEG C refrigerated condition.Experimental result is shown：Store using this method
The green rind walnut of Tibetan, 20-30 days are stored under 0-5 DEG C of refrigerated condition without going mouldy, it is fresh wet to go green rind walnut benevolence pure white, clear and melodious fresh
Fragrant, percentage of water loss is less than 3%.
The present invention is problem is encountered that removing the peel walnut surface blackening, going mouldy in contrived experiment, and walnut kernel is tacky, and kind skin is brown
Become.The content mainly investigated is peeling walnut surface whether there is blackspot, walnut kernel quality, Seed colour, it now is possible to which solution is asked
Topic is to remove the peel walnut surface without blackspot without going mouldy, and walnut kernel is fresh, plants skin not brown stain.
The processing storage fresh-keeping method disclosed by the invention for eating rascal walnut in shell raw is had compared with prior art
Good effect be：
（1）This method be for eat raw peeling walnut transporting procedures in practical problem designed by processing, preservation method, have
The advantages of with strong points, convenient to carry out, both avoided by the barking method soaked with the peeling solution based on hot alkaline solution
Accelerated the ripening during peeling caused by the use of ethephon (CEPHA),2-(chloroethyl) phosphonic acid side effect, serve good bactericidal action again, serve mould proof
Effect.
（2）Peeling walnut is eaten raw using this method storage, 20-30 days are stored under 0-5 DEG C of refrigerated condition without going mouldy, is planted
Benevolence is pure white, clear and melodious fresh fragrant, percentage of water loss is less than 3%.
Embodiment
The present invention is described below by specific embodiment.Unless stated otherwise, technological means used in the present invention
It is method known in those skilled in the art.In addition, embodiment is interpreted as illustrative, it is not intended to limit the present invention
Scope, the spirit and scope of the invention are limited only by the claims that follow.To those skilled in the art, without departing substantially from this
The various changes carried out on the premise of invention spirit and scope to the material component in these embodiments and dosage or change
Belong to protection scope of the present invention.Raw materials used and reagent of the invention is commercially available.Such as sodium hydroxide, sodium phosphate, pyrophosphoric acid
The reagents such as sodium are commercially available.
Embodiment 1
A kind of processing storage fresh-keeping method for eating rascal walnut in shell raw, is specifically followed the steps below：
（1）Walnut after harvesting is directly either manually or mechanically removed into most of rascal, the walnut for removing rascal is put into 55 DEG C
By（w/w）2% sodium hydroxide solution, 0.2%（w/w）Sodium radio-phosphate,P-32 solution, 0.1%（w/w）Sodium pyrophosphate solution composition
Soaked 60 seconds in solution, be then washed with water and brush away remained on surface rascal with hairbrush；
（2）Walnut after removal rascal is put into 1.8%（w/w）Propionic acid calcium solution in impregnate 30 seconds after pull out it is rapid with 90 DEG C
Hot blast blows 2 minutes；
（3）By the rapid entrucking of walnut after drying, and add 1- methyl ring third by the ppb of valid density 400 explosive payload in the car
Compartment is sealed after alkene, suffocating treatment is carried out to walnut during long-distance transport；
（4）After walnut is transported to destination, walnut is distributed into the polyethylene packaging bag of 40 μm of thickness and is stored or is sold,
The packaging bag need to be in both sides respectively by the hole that a cm of diameter 0.5 is made a call in every 10 sq, to avoid temperature fluctuation
Caused dew condensation phenomenon.
Embodiment 2
A kind of processing storage fresh-keeping method for eating rascal walnut in shell raw, is specifically followed the steps below：
（1）Walnut after harvesting is directly either manually or mechanically removed into most of rascal, the walnut for removing rascal is put into 60 DEG C
By 1%（w/w）Sodium hydroxide solution, 0.3%（w/w）Sodium radio-phosphate,P-32 solution, 0.3% sodium pyrophosphate solution composition solution in
Immersion 90 seconds, is then washed with water and brushes away remained on surface rascal with hairbrush；
（2）Walnut after removal rascal is put into 2%（w/w）Propionic acid calcium solution in impregnate 60 seconds after pull rapid 80 DEG C of heat out
Wind 3 minutes；
（3）Walnut after drying is quickly charged with refrigerator car, and adds 1- first by the ppb of valid density 600 explosive payload in the car
Compartment is sealed after cyclopropene；
（4）After walnut is transported to destination, walnut is put into after 0-5 DEG C of freezer spreads precooling out 24 hours and is distributed into 80 μm of thickness
In polyethylene packaging bag, storage or outbound sale, the packaging bag need to respectively press in every 20 sq in both sides and make a call to one
The cm of diameter 1.0 hole, to avoid dew condensation phenomenon caused by temperature fluctuation.
Embodiment 3
Contrast test
As can be seen from the data in the table, the walnut of conventional method storage occurs 50% fruit that goes mouldy on the 8th day, and the inventive method is store
The walnut of Tibetan can keep 25 days without fruit appearance of going mouldy, and the index such as percentage of water loss is better than conventional method.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (5)
1. a kind of processing storage fresh-keeping method for eating rascal walnut in shell raw, it is characterised in that when walnut 8 is ripe be rascal
Harvested, removed the peel as follows after harvesting, Preservation Treatment when not yet being separated with inner casing：
（1）Walnut after harvesting is directly either manually or mechanically removed into most of rascal, the walnut for removing rascal is put into 50-90
DEG C by 1%-6%（w/w）Sodium hydroxide solution, 0.1%-0.3%（w/w）Sodium radio-phosphate,P-32 solution, 0.1%-0.3%（w/w）'s
The 30-90 seconds are soaked in the solution of sodium pyrophosphate solution composition, is then cleaned with water, remained on surface rascal is brushed away with hairbrush；
（2）Walnut after removal rascal is put into 1%-2%（w/w）Propionic acid calcium solution in impregnate the 30-60 seconds after pull rapid use out
Hot blast drying surface moisture；
（3）Walnut after drying is fitted into mesh pocket, entrucking transport, in the car by valid density 300- when compartment is sealed
600 ppb explosive payload adds 1- methyl cyclopropenes and carries out suffocating treatment to walnut；
（4）After walnut is transported to destination, walnut is put into freezer and spreads precooling out 24 hours, load the polyethylene of 20-30 μm of thickness
Store in packaging bag, packaging bag both sides are pressed per making a call to diameter 0.5-1.0 cm's in 10-20 sqs respectively
Hole.
2. the processing storage fresh-keeping method described in claim 1, it is characterised in that by core in step (1) the rascal minimizing technology
Peach be put into 50-90 DEG C by 1%-6%（w/w）Sodium hydroxide solution, 0.1%-0.3%（w/w）Sodium radio-phosphate,P-32 solution, 0.1%-
0.3%（w/w）Sodium pyrophosphate solution composition solution in soak the 30-90 seconds.
3. the processing storage fresh-keeping method described in claim 1, it is characterised in that described in step (2) by remove rascal after core
Peach is put into 1%-2%（w/w）Propionic acid calcium solution in impregnate the 30-60 seconds after pull out and use hot blast drying surface moisture rapidly, hot blast blows
Dry time control is below 3 minutes.
4. the processing storage fresh-keeping method described in claim 1, it is characterised in that 1- first during step (3) described suffocating treatment
Cyclopropene valid density is 300-500 ppb, and encapsulation process mode is：The direct closed door sealing of refrigerator car, the non-case of normal temperature
The polyethylene film that formula lorry covers 40-80 μm of a layer thickness in its surrounding is sealed.
5. the processing storage fresh-keeping method for eating rascal walnut in shell described in claim 1 raw is ensureing to remove 0-5 DEG C of green rind walnut
The application of pure white, the clear and melodious fresh fragrant aspect of 20-30 days kernels is stored under refrigerated condition.
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Cited By (1)
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| CN108850133A (en) * | 2018-06-28 | 2018-11-23 | 熊建凉 | Green rind walnut preservation method |
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| CN108850133B (en) * | 2018-06-28 | 2022-01-25 | 熊建凉 | Method for preserving green-peel walnuts |
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Application publication date: 20180109 |