CN107821577A - A kind of manufacture method of dried longan - Google Patents
A kind of manufacture method of dried longan Download PDFInfo
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- CN107821577A CN107821577A CN201711072173.4A CN201711072173A CN107821577A CN 107821577 A CN107821577 A CN 107821577A CN 201711072173 A CN201711072173 A CN 201711072173A CN 107821577 A CN107821577 A CN 107821577A
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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
- A23B7/02—Dehydrating; Subsequent reconstitution
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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
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/154—Organic compounds; Microorganisms; Enzymes
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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
- A23B7/16—Coating with a protective layer; Compositions or apparatus therefor
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Abstract
The invention provides a kind of manufacture method of dried longan, it is characterised in that：Comprise the following steps：S1 fruits screen and trimming, the immersion of S2 fruits, S3 vacuum(-)bakings, S4, hang yellow processing, S5, sterilization encapsulation；The present invention is capable of the extension Huang agent of air-isolation, moisture etc. by rationally preparing the antistaling agent A with efficient sterilizing effect, while optimizes baking process, makes that dried longan shelf-life for preparing is longer, preservation and effect is good.
Description
Technical field
The invention belongs to fruit dry fruit preparation field, is specifically related to a kind of manufacture method of dried longan.
Background technology
Dried longan also known as intelligence development, arillus longan, it is the ripening fruits of longan.It is mild-natured, it is sweet, contain thiamine, riboflavin, Buddhist nun
The chemical analysis such as gram acid, ascorbic acid, have a blood-enrich, tranquilizing the mind, the effect of nourishing blood and preventing abortion, suitable for insomnia forgetfulness,
The diseases such as insufficiency of the spleen diarrhoea, lassitude.
Longan it is traditional drying, there is whole fruit (belt leather and core) and arillus longan (peeling stoning) to air-dry drying and heat drying two
Kind method.Air-dried drying is by fresh whole fruit or pulp under natural conditions, by solar irradiation solarization and gravity-flow ventilation evaporation drying
Into dry fruit, dry fruit meat, drying time, its sanitary condition was poor, easily microbial infection up to more than 3 weeks, and variable in rainy days
Matter is gone rotten.Heat drying is after fresh whole fruit directly or is first scalded with boiling water, and pulp is placed in into baking oven (room) heating (with fire or electricity),
Or FAR INFRARED HEATING, microwave are heated to its dehydration and form dry fruit, dry fruit meat, its processing sanitary condition is preferable, and during heating
Between longer, temperature it is higher (object is directly heated up to more than 70 DEG C), and resulting product color larger to its nutrient component damages is sent out
It is dark to black.Above two method processes the meat of obtained longan dry fruit, and not only nutrient component damages are serious, and it is original to lose its
Color, taste, fragrance and the shape of fresh fruit.
The content of the invention
The invention provides a kind of manufacture method of dried longan, by rationally preparing the antistaling agent with efficient sterilizing effect
A, it is capable of the extension Huang agent of air-isolation, moisture etc., makes that dried longan shelf-life for preparing is longer, preservation and effect is good.
The present invention is achieved by the following technical programs.
A kind of manufacture method of dried longan, comprises the following steps：
S1, fruit screening and trimming
Fresh longan is chosen, longan surface is cleaned with clear water, is placed under sunlight and is exposed to the sun half a day, deliver to workshop,
Had one's hair trimmed from carpopodium base portion, the longan trimmed；
S2, fruit immersion
Longan obtained by step S1 is put into antistaling agent A, 2-4 hours are soaked at 20-35 DEG C, takes out, dries longan table
It is stand-by behind face；
S3, vacuum(-)baking
By longan obtained by step S2, carry out just roasting temperature control and, at 45-60 DEG C, bakee 12-18 hours, place 1-2 days
After carry out multiple roasting, for the temperature control roasted again at 70-90 DEG C, the time be 6-8 hours, turns within every 2 hours and roasts 1 time, finally in vacuum
For 0.08-0.09MPa, under the conditions of 50-65 DEG C of temperature, it is 15%-24% to dry longan to water content；
S4, hang yellow processing
Longan is loaded and shakes cage, is drenched with clear water spraying, behind fruit face uniformly moistening, adds and hangs yellow agent, waggle makes
Fruit face uniform coloring, then dried fruit is spread again and dried on roasting stove machine, temperature is 40-50 DEG C, hour time 1-2；
S5, sterilization encapsulation
After the longan that step S4 has been bakeed carries out sterilization processing, sealed platform cover, the dried longan handled well.
Further, the antistaling agent A, in parts by weight, including following raw material：Garlic 10-20 parts, galangal 5-10
Part, purple perilla 1-5 parts, jasmine 10-20 parts, edible canna powder 10-20 parts, cloves 5-10 parts, giant knotweed 0.5-2 parts.
Further, the preparation method of the antistaling agent A, comprises the following steps：
(1) according to antistaling agent A component, each raw material is weighed；
(2) whole raw materials are crushed to 50-120 mesh；
(3) water of whole 5-8 times of raw material weights is added, is stirred, is soaked, filtering, filtrate and filter residue are separated；
(4) toward the ethanol solution that whole 0.5-1 times of concentration of raw material weight are 5-20% is added in filter residue, stir, soak
Bubble, filtering；
(5) filtrate obtained by blend step (3) and step (4), decolorization, is protected
Fresh dose of A.
Further, in the step S2, longan and antistaling agent A rate of charge, are longan according to weight ratio：Antistaling agent A
=1:0.5-4.
Further, it is described to hang yellow agent, in parts by weight, including following raw material：Curcuma powder 20-30 parts, carclazyte 3-8
Part, starch 5-10 parts, radix glycyrrhizae 1-5 parts, lac 0.5-1 parts.
Further, the preparation method for hanging yellow agent, comprises the following steps：
(1) according to the component for hanging yellow agent, each raw material is weighed；
(2) starch and water are mixed, is heated to 40-50 DEG C, added curcuma powder, radix glycyrrhizae, stir, place 1-2 hours；
(3) after cooling to room temperature, carclazyte and lac is added, stirs, obtains hanging yellow agent；
Further, in the step S4, longan and the rate of charge for hanging yellow agent, are longan according to weight ratio：Hang yellow agent=
1:0.5-2。
Further, in the step S3, the temperature control roasted again is at 80-85 DEG C.
Further, the concentration of ethanol solution is 10-15% in the preparation method of the antistaling agent A.
Further, in the step S2, longan and antistaling agent A rate of charge, are longan according to weight ratio：It is fresh-keeping
Agent A=1:2.
The beneficial effects of the present invention are：
1st, can have containing a variety of active materials that can suppress bacterium surface growth in the antistaling agent prepared by the present invention
Effect prevents breeding and growth of the bacterium on longan surface.
2 while separation layer is formed on longan surface by using yellow agent is hung, can effectively remove ambient air, moisture, thin
The influence to longan such as bacterium, extend the shelf-life of dried longan.
3rd, there is no sulphur and nitrite natrium residual in antistaling agent A of the invention and the yellow agent of extension, will not be detrimental to health.
Fresh-keeping foundation of the present invention has：
1st, cloves
Cloves contains volatile oil, main oleic acid containing cloves, acetyl cloves oleic acid and cloves alkene, Methylpentanone, methyl in oily
The compositions such as positive heptanone, vanillin.Have antibacterial and anthelmintic action, as fragrance, antispastic carminative, treat stomach trouble, suffer from abdominal pain, vomit
Tell, neuralgia, the disease such as toothache.
2nd, more perilla herb oil is contained in purple perilla.Perilla herb oil is in yellowish to green volatile essential oil, has special withered grass
Fragrance, it is sweet, have antisepsis concurrently.
Embodiment
Be described further below technical scheme, but claimed scope be not limited to it is described.
Embodiment 1
A kind of manufacture method of dried longan, comprises the following steps：
S1, fruit screening and trimming
Fresh longan is chosen, longan surface is cleaned with clear water, is placed under sunlight and is exposed to the sun half a day, deliver to workshop,
Had one's hair trimmed from carpopodium base portion, the longan trimmed；
S2, fruit immersion
Longan obtained by step S1 is put into antistaling agent A, soaked 2 hours at 20 DEG C, is taken out, after drying longan surface,
It is stand-by；Wherein longan and antistaling agent A rate of charge, are longan according to weight ratio：Antistaling agent A=1:0.5.
S3, vacuum(-)baking
By longan obtained by step S2, carry out just roasting temperature control and, at 45 DEG C, bakee 12 hours, answered after placing 1 day
Roasting, for the temperature control roasted again at 70 DEG C, the time is 6 hours, turns within every 2 hours roasting 1 time, is finally 0.08- in vacuum
0.09MPa, under the conditions of 50-55 DEG C of temperature, it is 18% to dry longan to water content；
S4, hang yellow processing
Longan is loaded and shakes cage, is drenched with the spraying of a little clear water, behind fruit face uniformly moistening, adds and hangs yellow agent, shake back and forth
It is dynamic to make fruit face uniform coloring, then dried fruit is spread again and dried on roasting stove machine, temperature is 40 DEG C, 1 hour time；Wherein
Longan and the rate of charge for hanging yellow agent, are longan according to weight ratio：Hang yellow agent=1:0.5.
S5, sterilization encapsulation
After the longan that step S4 has been bakeed carries out sterilization processing, sealed platform cover, the dried longan handled well.
The antistaling agent A, in parts by weight, including following raw material：10 parts of garlic, 5 parts of galangal, 1 part of purple perilla, jasmine
10 parts, 10 parts of edible canna powder, 5 parts of cloves, 0.5 part of giant knotweed.
The preparation method of the antistaling agent A, comprises the following steps：
(1) according to antistaling agent A component, each raw material is weighed；
(2) whole raw materials are crushed to 50 mesh；
(3) water of whole 5 times of raw material weights is added, is stirred, is soaked, filtering, filtrate and filter residue are separated；
(4) toward the ethanol solution that whole 0.5 times of concentration of raw material weight are 5% is added in filter residue, stir, soak, mistake
Filter；
(5) filtrate obtained by blend step (3) and step (4), decolorization, obtains antistaling agent A.
It is described to hang yellow agent, in parts by weight, including following raw material：20 parts of curcuma powder, 3 parts of carclazyte, 5 parts of starch, radix glycyrrhizae 1
Part, 0.5 part of lac.
The preparation method for hanging yellow agent, comprises the following steps：
(1) according to the component for hanging yellow agent, each raw material is weighed；
(2) starch and water are mixed, is heated to 40 DEG C, added curcuma powder, radix glycyrrhizae, stir, placed 1 hour；
(3) after cooling to room temperature, carclazyte and lac is added, stirs, obtains hanging yellow agent；
Embodiment 2
A kind of manufacture method of dried longan, comprises the following steps：
S1, fruit screening and trimming
Fresh longan is chosen, longan surface is cleaned with clear water, is placed under sunlight and is exposed to the sun half a day, deliver to workshop,
Had one's hair trimmed from carpopodium base portion, the longan trimmed；
S2, fruit immersion
Longan obtained by step S1 is put into antistaling agent A, soaked 4 hours at 35 DEG C, is taken out, after drying longan surface,
It is stand-by；Wherein longan and antistaling agent A rate of charge, are longan according to weight ratio：Antistaling agent A=1:4.
S3, vacuum(-)baking
By longan obtained by step S2, carry out just roasting temperature control and, at 60 DEG C, bakee 18 hours, answered after placing 2 days
Roasting, for the temperature control roasted again at 90 DEG C, the time is 8 hours, turns within every 2 hours roasting 1 time, is finally 0.09MPa in vacuum, temperature
Under the conditions of 65 DEG C, it is 24% to dry longan to water content；
S4, hang yellow processing
Longan is loaded and shakes cage, is drenched with clear water spraying, behind fruit face uniformly moistening, adds and hangs yellow agent, waggle makes
Fruit face uniform coloring, then dried fruit is spread again and dried on roasting stove machine, temperature is 50 DEG C, time 2 h；Wherein longan
Rate of charge with hanging yellow agent, is longan according to weight ratio：Hang yellow agent=1:2.
S5, sterilization encapsulation
After the longan that step S4 has been bakeed carries out sterilization processing, sealed platform cover, the dried longan handled well.
The antistaling agent A, in parts by weight, including following raw material：20 parts of garlic, 10 parts of galangal, 5 parts of purple perilla, jasmine
20 parts of jasmine, 20 parts of edible canna powder, 10 parts of cloves, 2 parts of giant knotweed.
The preparation method of the antistaling agent A, comprises the following steps：
(1) according to antistaling agent A component, each raw material is weighed；
(2) whole raw materials are crushed to 120 mesh；
(3) water of whole 8 times of raw material weights is added, is stirred, is soaked, filtering, filtrate and filter residue are separated；
(4) ethanol solution that whole 1 times of concentration of raw material weight are 20% is added toward filter residue, stirred, soaked, filtering；
(5) filtrate obtained by blend step (3) and step (4), decolorization, obtains antistaling agent A.
It is described to hang yellow agent, in parts by weight, including following raw material：30 parts of curcuma powder, 8 parts of carclazyte, 10 parts of starch, radix glycyrrhizae
5 parts, 1 part of lac.
The preparation method for hanging yellow agent, comprises the following steps：
(1) according to the component for hanging yellow agent, each raw material is weighed；
(2) starch and water are mixed, is heated to 50 DEG C, added curcuma powder, radix glycyrrhizae, stir, placed 2 hours；
(3) after cooling to room temperature, carclazyte and lac is added, stirs, obtains hanging yellow agent；
Embodiment 3
A kind of manufacture method of dried longan, comprises the following steps：
S1, fruit screening and trimming
Fresh longan is chosen, longan surface is cleaned with clear water, is placed under sunlight and is exposed to the sun half a day, deliver to workshop,
Had one's hair trimmed from carpopodium base portion, the longan trimmed；
S2, fruit immersion
Longan obtained by step S1 is put into antistaling agent A, soaked 3 hours at 25 DEG C, is taken out, after drying longan surface,
It is stand-by；Wherein longan and antistaling agent A rate of charge, are longan according to weight ratio：Antistaling agent A=1:2.
S3, vacuum(-)baking
By longan obtained by step S2, carry out just roasting temperature control and, at 50 DEG C, bakee 16 hours, carried out after placing 1.5 days
Multiple roasting, for the temperature control roasted again at 80 DEG C, the time is 7 hours, turns within every 2 hours roasting 1 time, is finally 0.085MPa in vacuum,
Under the conditions of 55-60 DEG C of temperature, it is 15% to dry longan to water content；
S4, hang yellow processing
Longan is loaded and shakes cage, is drenched with clear water spraying, behind fruit face uniformly moistening, adds and hangs yellow agent, waggle makes
Fruit face uniform coloring, then dried fruit is spread again and dried on roasting stove machine, temperature is 45-50 DEG C, 1.5 hours time；Its
Middle longan and the rate of charge for hanging yellow agent, are longan according to weight ratio：Hang yellow agent=1:1.
S5, sterilization encapsulation
After the longan that step S4 has been bakeed carries out sterilization processing, sealed platform cover, the dried longan handled well.
The antistaling agent A, in parts by weight, including following raw material：15 parts of garlic, 8 parts of galangal, 3 parts of purple perilla, jasmine
15 parts, 15 parts of edible canna powder, 8 parts of cloves, 1 part of giant knotweed.
The preparation method of the antistaling agent A, comprises the following steps：
(1) according to antistaling agent A component, each raw material is weighed；
(2) whole raw materials are crushed to 80 mesh；
(3) water of whole 6 times of raw material weights is added, is stirred, is soaked, filtering, filtrate and filter residue are separated；
(4) toward the ethanol solution that whole 0.8 times of concentration of raw material weight are 10% is added in filter residue, stir, soak, mistake
Filter；
(5) filtrate obtained by blend step (3) and step (4), decolorization, obtains antistaling agent A.
It is described to hang yellow agent, in parts by weight, including following raw material：25 parts of curcuma powder, 7 parts of carclazyte, 7 parts of starch, radix glycyrrhizae 3
Part, 0.8 part of lac.
The preparation method for hanging yellow agent, comprises the following steps：
(1) according to the component for hanging yellow agent, each raw material is weighed；
(2) starch and water are mixed, is heated to 45 DEG C, added curcuma powder, radix glycyrrhizae, stir, place 1-2 hours；
(3) after cooling to room temperature, carclazyte and lac is added, stirs, obtains hanging yellow agent；
Embodiment 4
A kind of manufacture method of dried longan, comprises the following steps：
S1, fruit screening and trimming
Fresh longan is chosen, longan surface is cleaned with clear water, is placed under sunlight and is exposed to the sun half a day, deliver to workshop,
Had one's hair trimmed from carpopodium base portion, the longan trimmed；
S2, fruit immersion
Longan obtained by step S1 is put into antistaling agent A, soaked 4 hours at 20 DEG C, is taken out, after drying longan surface,
It is stand-by；Wherein longan and antistaling agent A rate of charge, are longan according to weight ratio：Antistaling agent A=1:0.6.
S3, vacuum(-)baking
By longan obtained by step S2, carry out just roasting temperature control and, at 60 DEG C, bakee 12 hours, answered after placing 1 day
Roasting, for the temperature control roasted again at 85-90 DEG C, the time is 6 hours, turns within every 2 hours roasting 1 time, is finally 0.09MPa in vacuum,
Under the conditions of 50-55 DEG C of temperature, it is 16% to dry longan to water content；
S4, hang yellow processing
Longan is loaded and shakes cage, is drenched with clear water spraying, behind fruit face uniformly moistening, adds and hangs yellow agent, waggle makes
Fruit face uniform coloring, then dried fruit is spread again and dried on roasting stove machine, temperature is 40 DEG C, time 2 h；Wherein longan
Rate of charge with hanging yellow agent, is longan according to weight ratio：Hang yellow agent=1:1.9.
S5, sterilization encapsulation
After the longan that step S4 has been bakeed carries out sterilization processing, sealed platform cover, the dried longan handled well.
The antistaling agent A, in parts by weight, including following raw material：10 parts of garlic, 10 parts of galangal, 5 parts of purple perilla, jasmine
10 parts of jasmine, 20 parts of edible canna powder, 5 parts of cloves, 2 parts of giant knotweed.
The preparation method of the antistaling agent A, comprises the following steps：
(1) according to antistaling agent A component, each raw material is weighed；
(2) whole raw materials are crushed to 120 mesh；
(3) water of whole 5 times of raw material weights is added, is stirred, immersion (4) is toward adding whole raw material weights in filter residue
The ethanol solution that 0.8 times of concentration is 10%, stirs, and soaks, filtering；；
(4) toward the ethanol solution that whole 0.9 times of concentration of raw material weight are 18% is added in filter residue, stir, soak, mistake
Filter；
(5) filtrate obtained by blend step (3) and step (4), decolorization, obtains antistaling agent A.
It is described to hang yellow agent, in parts by weight, including following raw material：30 parts of curcuma powder, 3 parts of carclazyte, 10 parts of starch, radix glycyrrhizae
1 part, 0.5 part of lac.
The preparation method for hanging yellow agent, comprises the following steps：
(1) according to the component for hanging yellow agent, each raw material is weighed；
(2) starch and water are mixed, is heated to 50 DEG C, added curcuma powder, radix glycyrrhizae, stir, placed 1 hour；
(3) after cooling to room temperature, carclazyte and lac is added, stirs, obtains hanging yellow agent；
Control group 1
Purchase conventional fruit antistaling agent on the market, used to specifications, most longan is dried at last, is dried
Dry moisture content is 15%.
Control group 2
Tested according to the content of embodiment 3, different places is, is added without antistaling agent A, and dried longan drying is arrived
Moisture content is 15%.
Control group 3
Tested according to the content of embodiment 3, different places is, is added without and hangs yellow agent, and dried longan drying is arrived
Moisture content is 15%.
Blank group
Without using antistaling agent and yellow agent is hung, is 15% only by dried longan drying to moisture content.
Fresh-keeping testing experiment 1
By the longan dryed product implemented according to the present invention program and commercially available dried longan, be placed on together temperature for 37 DEG C, it is relative
Humidity is in 95% climatic chamber, does and accelerates preservation experiment, as a result as follows:
The hot and humid acceleration storage experiment result table of comparisons of dried longan
Remarks：According to the requirement of product standard in agricultural industry criteria NY/T709-2003, the total plate count of product≤
750cfu/g, fungi count≤50cfu/g.
In above-mentioned hot and humid acceleration storage experiment, dried longan can at least guarantee the quality 9 in embodiment 1- embodiments 4
My god, and commercially available dried longan is only capable of guaranteeing the quality 3 days, is calculated with this, applying the technical scheme of the present invention makes the extended shelf-life of dried longan
More than 30%.Blank group does not add antistaling agent A of the present invention and hangs yellow agent simultaneously, and fresh-keeping efficiency is better than commercially available longan
It is dry, illustrate that step S5 of the present invention has certain bactericidal effect to bacterium；In addition from 3 grades of blank of control group 1- control groups
Group comparing result from the point of view of, while exist antistaling agent A of the present invention and hang yellow agent when, can promote step S5 to sterilization imitate
The influence of fruit, while in hot and humid experiment, have certain effect to the growth for suppressing bacterium；From control group 3 and blank
The comparing result of group is analyzed, and after adding antistaling agent of the present invention, the dried longan prepared, total plate count and mould be total
Number significantly reduces.
Fresh-keeping testing experiment 2
By the present invention program implement longan dryed product be placed on normal temperature with commercially available dried longan, unlimited interior is preserved,
Observe and record 5d, 20d, 30d, the fresh-keeping situation of 60d dried longans, concrete outcome see the table below：
The fresh-keeping situation table of comparisons of dried longan:
As seen from the above table, embodiment 1-4 fresh-keeping effect is compared with blank group and commercially available dried longan, after storage 20 days,
Pulp is golden yellow glossy, illustrates that the dried longan fresh-keeping effect prepared by the present invention is good, normal temperature and open wide in the state of, can
Long period preserves；In addition from the point of view of the comparing result of control group 1- control groups, blank group and embodiment 3, while this hair be present
During the bright yellow agent of described antistaling agent A and extension, effectively longan surface can be sterilized, effective bacteria growing inhibiting, be prevented
Bacterium enters through longan epidermal surface and entered in pulp, reaches the fresh-keeping effect guaranteed the quality.
Fresh-keeping testing experiment 3
Measure the present invention program and implement gained longan dryed product and sulphur and nitrite natrium content in commercially available dried longan, be specifically shown in
Following table：
As seen from the above table, sulphur and nitrite natrium are not detected in embodiment 1-4 and control group 2-3 and blank group, explanation makes
There is no sulphur and nitrite natrium to remain with the antistaling agent A of the present invention and the yellow agent of extension, will not be detrimental to health.
Claims (10)
- A kind of 1. manufacture method of dried longan, it is characterised in that：Comprise the following steps：S1, fruit screening and trimmingFresh longan is chosen, longan surface is cleaned with clear water, is placed under sunlight and is exposed to the sun half a day, deliver to workshop, from fruit Metulae portion has one's hair trimmed, the longan trimmed；S2, fruit immersionLongan obtained by step S1 is put into antistaling agent A, 2-4 hours are soaked at 20-35 DEG C, is taken out, after drying longan surface, It is stand-by；S3, vacuum(-)bakingBy longan obtained by step S2, just roast；Temperature control at 45-60 DEG C, bakee 12-18 hours, place 1-2 days it is laggard The multiple roasting of row, for the temperature control roasted again at 70-90 DEG C, the time is 6-8 hours, turns within every 2 hours roasting 1 time, is in vacuum finally 0.08-0.09MPa, under the conditions of 50-65 DEG C of temperature, it is 15%-24% to dry longan to water content；S4, hang yellow processingLongan is loaded and shakes cage, is drenched with water spray, behind fruit face uniformly moistening, adds and hangs yellow agent, waggle makes fruit face equal Even coloring, then dried fruit is spread again and dried on roasting stove machine, temperature is 40-50 DEG C, hour time 1-2；S5, sterilization encapsulationAfter the longan that step S4 has been bakeed carries out sterilization processing, sealed platform cover, the dried longan handled well.
- 2. the manufacture method of dried longan according to claim 1, it is characterised in that：The antistaling agent A, according to parts by weight Meter, including following raw material：Garlic 10-20 parts, galangal 5-10 parts, purple perilla 1-5 parts, jasmine 10-20 parts, edible canna powder 10-20 parts, Cloves 5-10 parts, giant knotweed 0.5-2 parts.
- 3. the manufacture method of dried longan according to claim 1, it is characterised in that：The preparation method of the antistaling agent A, bag Include following steps：(1) according to antistaling agent A component, each raw material is weighed；(2) whole raw materials are crushed to 50-120 mesh；(3) water of whole 5-8 times of raw material weights is added, is stirred, is soaked, filtering, filtrate and filter residue are separated；(4) toward the ethanol solution for whole 0.5-1 times of raw material weights being added in filter residue, concentration is 5-20%, stir, soak, Filtering；(5) filter, the filtrate obtained by blend step (3) and step (4), decolorization, obtain antistaling agent A.
- 4. the manufacture method of dried longan according to claim 1, it is characterised in that：In the step S2, longan with it is fresh-keeping Agent A rate of charge, it is longan according to weight ratio：Antistaling agent A=1:0.5-4.
- 5. the manufacture method of dried longan according to claim 1, it is characterised in that：It is described to hang yellow agent, in parts by weight, Including following raw material：Curcuma powder 20-30 parts, carclazyte 3-8 parts, starch 5-10 parts, radix glycyrrhizae 1-5 parts, lac 0.5-1 parts.
- 6. the manufacture method of dried longan according to claim 1, it is characterised in that：The preparation method for hanging yellow agent, bag Include following steps：(1) according to the component for hanging yellow agent, each raw material is weighed；(2) starch and water are mixed, is heated to 40-50 DEG C, added curcuma powder, radix glycyrrhizae, stir, place 1-2 hours；(3) after cooling to room temperature, carclazyte and lac is added, stirs, obtains hanging yellow agent.
- 7. the manufacture method of dried longan according to claim 1, it is characterised in that：In the step S4, longan is yellow with hanging The rate of charge of agent, it is longan according to weight ratio：Hang yellow agent=1:0.5-2.
- 8. the manufacture method of dried longan according to claim 1, it is characterised in that：In the step S3, the temperature that roasts again Control is at 80-85 DEG C.
- 9. the manufacture method of dried longan according to claim 3, it is characterised in that：The concentration of the ethanol solution is 10- 15%.
- 10. the manufacture method of dried longan according to claim 4, it is characterised in that：In the step S2, longan with it is fresh-keeping Agent A rate of charge, it is longan according to weight ratio：Antistaling agent A=1:2.
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| CN109288104A (en) * | 2018-11-12 | 2019-02-01 | 方家铺子（莆田）绿色食品有限公司 | A kind of longan fresh fruit hangs yellow processing equipment and its processing method |
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