CN109121750B - Storage method of grapes - Google Patents
Storage method of grapes Download PDFInfo
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- CN109121750B CN109121750B CN201810843769.8A CN201810843769A CN109121750B CN 109121750 B CN109121750 B CN 109121750B CN 201810843769 A CN201810843769 A CN 201810843769A CN 109121750 B CN109121750 B CN 109121750B
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- 241000219094 Vitaceae Species 0.000 title claims abstract description 94
- 235000021021 grapes Nutrition 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003860 storage Methods 0.000 title abstract description 18
- 235000013399 edible fruits Nutrition 0.000 claims abstract description 52
- 235000015097 nutrients Nutrition 0.000 claims abstract description 49
- 238000001802 infusion Methods 0.000 claims abstract description 33
- 235000014787 Vitis vinifera Nutrition 0.000 claims abstract description 30
- 240000000560 Citrus x paradisi Species 0.000 claims abstract description 29
- 241000219095 Vitis Species 0.000 claims abstract description 28
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- 235000012333 Vitis X labruscana Nutrition 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 26
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
- 239000002023 wood Substances 0.000 claims description 14
- 239000001569 carbon dioxide Substances 0.000 claims description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 13
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 238000012958 reprocessing Methods 0.000 claims description 9
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 7
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims description 7
- 239000008103 glucose Substances 0.000 claims description 7
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 claims description 6
- 229930006000 Sucrose Natural products 0.000 claims description 6
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 6
- 229930003268 Vitamin C Natural products 0.000 claims description 6
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 6
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 6
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- 240000002503 Vitis amurensis Species 0.000 claims description 5
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/14—Containers specially adapted for storing
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/16—Arrangements in forage silos
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/16—Arrangements in forage silos
- A01F25/22—Ventilating arrangements
-
- 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
-
- 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
- A23B7/157—Inorganic compounds
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Abstract
The invention relates to the technical field of grape planting, in particular to a storage method of grapes. According to the grape storage method provided by the invention, grapes are picked together with fruit stalks in the evening of a sunny day, unqualified pears are removed, the grapes are hung on a hanging frame and then are spread for precooling and winnowing, then an infusion tube and a plastic bubble are sleeved on the grape fruit stalks, nutrient solution is filled in the plastic bubble, the grape frame with the grapes is conveyed into a cellar for carrying out infusion treatment, continuous nutrient supply is provided for the stored grapes, the death or the diffusion of nutrient components of the grapes is prevented, the quality guarantee period of the picked grapes is effectively prolonged, the grapes are guaranteed to be fresh to the next spring, and compared with the common cellar storage of the grapes, the nutrient components and the water content of the grapes stored by the grape storage method provided by the invention are basically equivalent to those of the fresh grapes.
Description
Technical Field
The invention relates to the technical field of grape planting, in particular to a storage method of grapes.
Background
Grape, a berry, is one of the oldest and most widely distributed fruits in the world, and people grow the fruit trees very early, wherein the berries are mostly round or oval, and the color and luster of the fruit trees are different according to varieties. Accounts for almost one fourth of fruit production worldwide; it has high nutritive value, and can be made into grape juice, raisin and wine. Big, thick, little juice, much water, easy separation of skin and meat, sour and sweet taste, and long-term storage and transportation of Eurasian grapes, also called grapes, which grow in clusters and have yellow green, red, black blue or purple color. The flesh is covered with a thin skin, the skin is covered with a thin frost, and some varieties have no seeds. The grape can be used as raw fruit food, and can also be used for brewing wine or making raisin. In addition, the product can be used as decoration. Grapes are called as crystal pearl because of bright color, delicious taste and high nutritive value.
The yield of grapes planted on the earth is rich, particularly, grapes are directly used as the first large industry in some tropical regions or countries, and tens of thousands of grapes are exported or wholesale every year when the grapes are mature; however, during the mature season of grapes, not all grapes can be shipped or sold, and it is a common occurrence for many grape growers to market grapes for more than demand.
In order to prolong the shelf life of mature but unsolvable grapes and prevent the grapes from rotting to cause economic loss, a plurality of grape storage methods are invented for thousands of years, wherein the most remarkable storage methods comprise four categories of refrigeration storage, cellar storage, membrane storage and tile jar storage; however, the grape is relatively "delicate" in texture and still easily spoils during storage.
Based on the above, there is a strong need in the grape growing market for an efficient and useful method of storing grapes that provides a "false-growth" survival mode for unsold grapes.
Disclosure of Invention
In order to solve the above problems and improve the shelf life and tenderness of unsold grapes, the present invention provides a method for storing grapes.
The invention is realized by the following technical scheme:
a method of storing grapes comprising the steps of:
a. grape pretreatment: after 5 pm on a sunny day, cutting off the whole bunch of completely mature grapes together with fruit stalks, removing cracked fruits, rotten fruits, damaged fruits and insect damage fruits, hanging on a hanging frame, spreading for cooling for 3-5 hours at a shady and cool ventilating place at the temperature of 20-23 ℃, wiping off surface layer fruit powder, and then hanging for winnowing for 2-3 hours under cold air with the temperature of 8-12 ℃ and the humidity of 15-20%;
b. and (3) grape reprocessing: sleeving a 2-2.5 cm long transparent infusion tube at the fruit stalk end of the grape subjected to winnowing, fastening, controlling the inner surface of the infusion tube to be in seamless close contact with the fruit stalk, and tightly connecting the other end of the infusion tube with a volume of 12-20 cm3The openable plastic bubble is sealed after the plastic bubble is filled with nutrient solution;
c. and (3) storing the grapes: and (3) feeding the grapes after the reprocessing into a cellar at 3-5 ℃, hanging and storing, controlling the humidity of air in the cellar to be between 80% and 85%, and passing scattered light with the intensity of less than or equal to 85lx in the cellar.
Preferably, the suspension bracket is composed of two vertical brackets and a transverse row of wooden sticks connected between the two brackets, and the distance between the two brackets is 1.6-2 m; the distance between the upper wood stick and the lower wood stick is 35-40 cm, and the distance between the lowest wood stick and the bottom end of the support is 55 cm;
at least one hook is fixed on the horizontal wooden stick, and the distance between every two adjacent hooks is 16-20 cm.
Preferably, the grape hanging method is as follows:
three strings are bound on the grape fruit stalks, binding points are 2cm away from the fruit stalk ends, connecting lines among the binding points of the three strings are controlled to be in an equilateral triangle shape, the other ends of the three strings are glued together to form a triangular prism-shaped sleeve net, and the sleeve net is hung on a hook of a hanging frame.
Preferably, when the grape fruit stalk end is sleeved with the sleeve, the control infusion tube is sleeved on the fruit stalk and exceeds the fruit stalk by 1 cm.
Preferably, the nutrient solution comprises the following components:
6-8 g/L of sucrose, 5-7 g/L of glucose, 1-2 g/L of vitamin C, 0.2-0.4 mol/L of citric acid, 0.25-0.45 mmol/L of nitrilotriacetic acid, 0.05-0.08 mol/L of aluminum sulfate and the balance of grape water.
Further, the nutrient solution comprises the following components:
8g/L of sucrose, 5g/L of glucose, 2g/L of vitamin C, 0.2mol/L of citric acid, 0.30mmol/L of nitrilotriacetic acid, 0.06mol/L of aluminum sulfate and the balance of glucose.
Further, the grape water is 500 times of the diluted solution of the pure juice of the grapes to be stored.
Preferably, in the grape suspension winnowing process, the grape fruits are sprayed with carbon dioxide gas in a spraying mode, each bunch of grapes is sprayed with carbon dioxide gas in a spraying mode for 5-7 s, and the concentration of the carbon dioxide gas spray is 450-500 ppm.
Preferably, in the grape cellaring process, the plastic bubbles on the grape fruit stalks are detected every 5-7 days, and if the nutrient solution in the plastic bubbles is dry, the nutrient solution is supplemented in time.
In the technical scheme provided by the invention, when the grape fruit stalk end is sleeved with the infusion tube, 1-2 small holes can be punched on the cut surface of the fruit stalk end by using an aseptic embroidery needle, so that the absorption effect of the grape fruit stalk on the nutrient solution is improved.
In the technical scheme provided by the invention, the plastic bubble filled with the nutrient solution and the infusion tube are required to be controlled to vertically stand so as not to topple over, the nutrient solution in the plastic bubble is controlled not to leak, and the plastic bubble or the infusion tube is prevented from being folded to cause nutrient supply failure.
The invention has the beneficial effects that:
compared with the prior art, the infusion tube and the plastic bubble are sleeved at the grape stem end after spreading for cooling and precooling, the nutrient solution is filled in the plastic bubble, the infusion treatment is carried out on the grapes with the stems, the quality guarantee period of the grapes with the stems is effectively prolonged under the matching of cellar refrigeration, and the fresh tenderness of the grapes is delayed to the spring of the next year; meanwhile, the nutrient solution provided by the invention contains components capable of providing nutrient elements such as a nitrogen source, a carbon source, vitamins and the like, and under the dissolving action of the juice of the grapes to be stored, the affinity between the nutrient solution and the grape stalks is increased, the absorption effect of the grape stalks on the nutrient solution is improved, continuous nutrient supply is provided for the stored grapes, the death of the grapes or the flowing and scattering of nutrient components are prevented, and compared with the common cellaring of the grapes, the nutrient components and the water content in the stored grapes are basically equivalent to those of the fresh grapes.
Drawings
FIG. 1 is a schematic view of a partial structure of a hanger according to the present invention;
fig. 2 is a planar view of the infusion tube and plastic bulb.
Wherein, 101-support, 102-horizontal roller, 103-hook; the | 104-infusion tube, 105-plastic bubble and 106-plastic bubble switch.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the technical solutions provided by the present invention include not only the contents shown in the examples.
Example 1
The embodiment provides a storage method of grapes, and aims to keep the unsold grapes with stalks fresh and prolong the shelf life of the picked grapes; the specific process is as follows:
a. grape pretreatment: after 5 pm on sunny days, cutting the whole bunch of completely mature grapes together with the fruit stalks, removing cracked fruits, rotten fruits, damaged fruits and insect pests, binding three thin ropes on the grape fruit stalks, wherein the binding points are 2cm away from the fruit stalk ends, controlling connecting lines among the binding points of the three thin ropes to be in an equilateral triangle shape, and gluing the other ends of the three thin ropes together to form a triangular prism-shaped sleeve net, so that the bound grapes can vertically droop in the hanging process; hanging the grapes bound with the strings on a hook of a hanging frame, hanging the grapes on the hanging frame, spreading the grapes in a shady and ventilated place at 20 ℃ for cooling for 3 hours, wiping off fruit powder on the surface layer, then hanging and winnowing the grapes in cold air with the temperature of 8 ℃ and the humidity of 20% for 2 hours, and selecting carbon dioxide gas to spray grape fruits, wherein each bunch of grape fruits is sprayed with the carbon dioxide gas for 5 seconds, and the concentration of the carbon dioxide gas spray is 500 ppm;
b. and (3) grape reprocessing: as shown in figure 2, a 2cm long transparent infusion tube 104 with a depth of 1cm is sleeved on the end of the grape fruit stalk after air separation, the infusion tube is tightly tied, the inner surface of the infusion tube is controlled to be in seamless tight contact with the fruit stalk, the infusion tube sleeved on the fruit stalk exceeds the end of the fruit stalk by 1cm, and the other end of the infusion tube is tightly connected with a infusion tube with a volume of 12cm3The openable plastic bubble 105 is closed after the plastic bubble is filled with nutrient solution;
c. and (3) storing the grapes: delivering the grapes after the reprocessing into a cellar at 3 ℃, suspending and storing, controlling the humidity of air in the cellar to be between 80% and 85%, and allowing scattered light with the intensity of 85lx to pass through the cellar; and detecting the plastic bubbles on the grape fruit stalks every 5 days, and supplementing the nutrient solution in time if the nutrient solution in the plastic bubbles is dry.
In the present embodiment, as shown in fig. 1, the suspension frame is composed of two vertical brackets 101 and 4 transverse wooden rods 102 connected between the two brackets, and the distance between the two brackets is 1.6 m; the distance between the two wood rods in the upper and lower transverse rows is 40cm, and the distance between the lowest wood rod and the bottom end of the support is 55 cm;
at least one hook 103 is fixed on the horizontal wooden stick, and the distance between every two adjacent hooks is 16 cm.
In this embodiment, the nutrient solution comprises the following components:
in this embodiment, the nutrient solution comprises the following components:
8g/L of sucrose, 5g/L of glucose, 2g/L of vitamin C, 0.2mol/L of citric acid, 0.30mmol/L of nitrilotriacetic acid, 0.06mol/L of aluminum sulfate and the balance of 500 times of diluent of the pure juice of the grapes to be stored. The grape juice containing the grape fruit stalks is used for dissolving all components in the nutrient solution, improving the affinity between the nutrient solution and the grape fruit stalks and improving the absorption effect of the grapes on the nutrient solution.
Example 2
The embodiment provides a storage method of grapes, and aims to keep the unsold grapes with stalks fresh and prolong the shelf life of the picked grapes; the specific process is as follows:
a. grape pretreatment: after 5 pm on sunny days, cutting the whole bunch of completely mature grapes together with the fruit stalks, removing cracked fruits, rotten fruits, damaged fruits and insect pests, binding three thin ropes on the grape fruit stalks, wherein the binding points are 2cm away from the fruit stalk ends, controlling connecting lines among the binding points of the three thin ropes to be in an equilateral triangle shape, and gluing the other ends of the three thin ropes together to form a triangular prism-shaped sleeve net, so that the bound grapes can vertically droop in the hanging process; hanging the grapes bound with the strings on a hook of a hanging frame, hanging the grapes on the hanging frame, spreading the grapes in a shady and ventilated place at 23 ℃ for 5 hours, wiping off fruit powder on the surface layer, then hanging and winnowing the grapes in cold air with the temperature of 12 ℃ and the humidity of 15% for 3 hours, and selecting carbon dioxide gas to spray grape fruits for 7 seconds in each bunch of grapes, wherein the concentration of the carbon dioxide gas spray is 450 ppm;
b. and (3) grape reprocessing: as shown in fig. 2, the grape is separated after the air separation is finishedCovering a 2.5cm long transparent infusion tube 104 with a depth of 1.5cm at the fruit stalk end, tightening, controlling the inner surface of the infusion tube to be in seamless tight contact with the fruit stalk, wherein the infusion tube covered on the fruit stalk exceeds the fruit stalk end by 1cm, and the other end of the infusion tube is closely connected with a 20cm volume infusion tube3The openable plastic bubble 105 is closed after the plastic bubble is filled with nutrient solution;
c. and (3) storing the grapes: delivering the grapes after the reprocessing into a cellar at 5 ℃, storing the grapes in a hanging manner, controlling the humidity of air in the cellar to be between 80 and 85 percent, and allowing scattered light with the intensity of 65lx to pass through the cellar; and detecting the plastic bubbles on the grape fruit stalks every 7 days, and supplementing the nutrient solution in time if the nutrient solution in the plastic bubbles is dry.
In the present embodiment, as shown in fig. 1, the suspension bracket is composed of two vertical brackets 101 and a horizontal wooden stick 102 connected between the two brackets, and the distance between the two brackets is 2 m; the distance between the upper wood stick and the lower wood stick is 35cm, and the distance between the lowest wood stick and the bottom end of the support is 55 cm;
at least one hook 103 is fixed on the horizontal wooden stick, and the distance between every two adjacent hooks is 20 cm.
In this embodiment, the nutrient solution comprises the following components:
6g/L of sucrose, 7g/L of glucose, 1g/L of vitamin C, 0.4mol/L of citric acid, 0.25mmol/L of nitrilotriacetic acid, 0.08mol/L of aluminum sulfate and the balance of 500 times of diluent of the pure juice of the grapes to be stored. The grape juice containing the grape fruit stalks is used for dissolving all components in the nutrient solution, improving the affinity between the nutrient solution and the grape fruit stalks and improving the absorption effect of the grapes on the nutrient solution.
Example 3
The embodiment provides a storage method of grapes, and aims to keep the unsold grapes with stalks fresh and prolong the shelf life of the picked grapes; the specific process is as follows:
a. grape pretreatment: after 5 pm on sunny days, cutting the whole bunch of completely mature grapes together with the fruit stalks, removing cracked fruits, rotten fruits, damaged fruits and insect pests, binding three thin ropes on the grape fruit stalks, wherein the binding points are 2.5cm away from the fruit stalk ends, controlling connecting lines among the binding points of the three thin ropes to be in an equilateral triangle shape, and gluing the other ends of the three thin ropes together to form a triangular prism-shaped sleeve net so that the bound grapes can vertically droop in the hanging process; hanging the grapes bound with the strings on a hook of a hanging frame, hanging the grapes on the hanging frame, spreading the grapes in a shady and ventilated place at 21 ℃ for cooling for 4 hours, wiping off surface layer fruit powder, then hanging and winnowing the grapes in cold air with the temperature of 10 ℃ and the humidity of 13% for 3 hours, and selecting carbon dioxide gas to spray grape fruits for 6 seconds in each bunch of grapes, wherein the concentration of the carbon dioxide gas spray is 480 ppm;
b. and (3) grape reprocessing: as shown in figure 2, a 2.3cm long transparent infusion tube 104 with a depth of 1.3cm is sleeved on the end of the grape fruit stalk after air separation, the infusion tube is tightened, the inner surface of the infusion tube is controlled to be in seamless close contact with the fruit stalk, the infusion tube sleeved on the fruit stalk exceeds the end of the fruit stalk by 1cm, and the other end of the infusion tube is tightly connected with a infusion tube with a volume of 16cm3The openable plastic bubble 105 is closed after the plastic bubble is filled with nutrient solution;
c. and (3) storing the grapes: delivering the grapes after the reprocessing into a cellar at 5 ℃, storing the grapes in a hanging manner, controlling the humidity of air in the cellar to be between 80 and 85 percent, and allowing scattered light with the intensity of 50lx to pass through the cellar; and detecting the plastic bubbles on the grape fruit stalks every 6 days, and supplementing the nutrient solution in time if the nutrient solution in the plastic bubbles is dry.
In the present embodiment, as shown in fig. 1, the suspension bracket is composed of two vertical brackets 101 and a horizontal wooden stick 102 connected between the two brackets, and the distance between the two brackets is 2 m; the distance between the upper wood stick and the lower wood stick is 38cm, and the distance between the lowest wood stick and the bottom end of the support is 55 cm;
at least one hook 103 is fixed on the horizontal wooden stick, and the distance between every two adjacent hooks is 18 cm.
In this embodiment, the nutrient solution comprises the following components:
7g/L of sucrose, 6g/L of glucose, 1.2g/L of vitamin C, 0.5mol/L of citric acid, 0.36mmol/L of nitrilotriacetic acid, 0.065mol/L of aluminum sulfate and the balance of 500 times of the pure juice of the grapes to be stored. The grape juice containing the grape fruit stalks is used for dissolving all components in the nutrient solution, improving the affinity between the nutrient solution and the grape fruit stalks and improving the absorption effect of the grapes on the nutrient solution.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the present invention without departing from the technical spirit of the present invention.
Claims (1)
1. A method of storing grapes, comprising the steps of:
a. grape pretreatment: after 5 pm on a sunny day, cutting off the whole bunch of completely mature grapes together with fruit stalks, removing cracked, rotten, damaged and insect-damaged fruits, binding three thin ropes on the grape fruit stalks, wherein the binding points are 2cm away from the fruit stalk ends, controlling connecting lines among the binding points of the three thin ropes to be in an equilateral triangle shape, gluing the other ends of the three thin ropes together to form a triangular prism-shaped net, hanging the net on a hook of a hanging frame, spreading the net for cooling for 3-5 hours at a shady and ventilated place at 20-23 ℃, wiping off surface fruit powder, and then hanging and winnowing for 2-3 hours under cold air with the temperature of 8-12 ℃ and the humidity of 15-20%; in the suspension winnowing process, spraying carbon dioxide gas to the grape fruits, wherein each bunch of grapes is sprayed for 5-7 s in a carbon dioxide spraying mode, and the concentration of the carbon dioxide spraying is 450-500 ppm;
b. and (3) grape reprocessing: selecting grape fruit stem end after air separationPricking 1-2 small holes on the cut surface of the fruit stalk end by using a sterile embroidery needle, sleeving a 2-2.5 cm long transparent infusion tube with the depth of 1-1.5 cm, tightening, controlling the inner surface of the infusion tube to be in seamless close contact with the fruit stalk, and tightly connecting the other end of the infusion tube with a volume of 12-20 cm3The openable plastic bubble is sealed after the plastic bubble is filled with nutrient solution; the nutrient solution comprises the following components:
6-8 g/L of sucrose, 5-7 g/L of glucose, 1-2 g/L of vitamin C, 0.2-0.4 mol/L of citric acid, 0.25-0.45 mmol/L of nitrilotriacetic acid, 0.05-0.08 mol/L of aluminum sulfate and the balance of grape water; the grape water is a 500-time diluent of the pure juice of the grapes to be stored;
c. and (3) storing the grapes: feeding the grapes after the re-treatment into a cellar at 3-5 ℃, suspending and storing, controlling the humidity of air in the cellar to be between 80% and 85%, and passing scattered light with the intensity of less than or equal to 85lx in the cellar; detecting the plastic bubbles on the grape fruit stalks every 5-7 d in the cellaring process, supplementing nutrient solution in time if nutrient solution in the plastic bubbles is dry, and controlling the plastic bubbles filled with the nutrient solution and a liquid conveying pipe to stand vertically so as not to topple over, so that the nutrient solution in the plastic bubbles cannot leak;
the hanging frame is composed of two vertical supports and a transverse row of wooden sticks connected between the two supports, and the distance between the two supports is 1.6-2 m; the distance between the upper wood stick and the lower wood stick is 35-40 cm, and the distance between the lowest wood stick and the bottom end of the support is 55 cm;
at least one hook is fixed on the horizontal wooden stick, and the distance between every two adjacent hooks is 16-20 cm.
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