Sun No.1 tangelo fruit quality improving agent as well as preparation method, use method and application of sun No.1 tangelo fruit quality improving agent

Abstract

The invention relates to the technical field of citrus planting, and discloses a sunshine No.1 tangelo fruit quality improving agent which comprises a solid-liquid mixture of water, expired brown sugar, potassium tripolyphosphate, expired milk and small shrimps. The invention discloses a preparation method of a sunshine No.1 tangelo fruit quality improving agent. The preparation method comprises the following steps: step 1, dissolving brown sugar in water; and step 2, sequentially adding potassium tripolyphosphate, milk and shrimps, adding the next one after one is added and fully stirred and dissolved, finally adding water for dilution, and fully and uniformly stirring. A use method of the Sunshine No.1 tangelo fruit quality improving agent comprises the following steps: 3-4 months after flowers of Sunshine No.1 tangelo fall, fully stirring before use, uniformly splashing near a water drip of a tree crown, and then carrying out rotary tillage at a depth of 10-15 cm so as to uniformly mix the Sunshine No.1 tangelo fruit quality improving agent with soil. The invention relates to application of a sunshine No.1 tangelo fruit quality improving agent in tangelo planting. The sugar degree of tangelo fruits is increased, the acidity is reduced, and the tangelo is low in slagging property, low in preparation cost, safe, harmless and easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of citrus planting, and in particular to a Sunshine No. 1 tangerine and pomelo fruit quality improving agent, and a preparation method and application thereof. Background Art

[0002] Tangelo Citrus reticulata × Citrus grandis ), a hybrid of the wide-skinned mandarin orange and pomelo of the genus Citrus in the Rutaceae family, with an open tree posture and strong tree vigor. The fruit is oblate and compact, with a slightly raised fruit stalk and a flat top. The peel is orange-yellow and the surface is relatively smooth. It has a combined aroma and taste of tangerine, orange and pomelo. The single fruit weighs about 300 grams, with few or no seeds. The flesh is orange and soft, with a solid content of more than 12.5% ​​and an acid content of 0.5%-1.0%. It matures in mid-to-late November. Most tangerine and pomelo varieties are resistant to storage and transportation and can be stored until the end of May of the following year without changing taste.

[0003] Sunshine No. 1 pomelo is a new variety bred by the Citrus Research Institute of Southwest University by hybridizing Red Beauty (Ehime 28) and Chunxiang pomelo. This variety matures in mid-to-late November, has good yield, large fruit (200-300 grams), is seedless, easy to peel, resistant to transportation, and has excellent storage performance. It can be stored in a cold storage for 8 months without graining, drying up, or changing taste, but this variety has high requirements for fertilizer nutrients.

[0004] Chinese patent document CN114651656A discloses a high-yield cultivation method of Sunshine No. 1 tangerine and pomelo, comprising the following steps: S1: soil disinfection, digging a plot of land with a soil layer depth of 70-110 cm and a pH value of 6.1-6.7, and spraying a soil fungicide on the plot at a density of 900-1000 g / mu; S2: soil improvement, testing the pH value of the soil in S1, and spraying a neutralizer and waste into the soil according to the test results, The soil is further turned over and green manure is buried; S3: taking soil to build ridges, when the good soil is dug to build ridges, the size of the ridges is 3m*20m, the height is 35cm, and drainage ditches are set between adjacent ridges; S4: selecting seedlings for cultivation, selecting 30-40cm grafted seedlings with well-developed root systems, strong branches and green leaves, and planting them on the ridges; S5: digging holes for planting, excavating 80cm×80cm×80cm on the ridges raised by S3, applying sufficient basal fertilizer, and carrying out planting.

[0005] Chinese patent document CN107926436A discloses a high-quality and high-yield citrus planting method, including site selection and soil preparation, pit treatment, seedling planting, and fertilizer and water management: applying organic fertilizer twice from planting to fruiting, 8 kg per plant each time, watering once every 5-7 days to keep the soil moist, spraying biological fungicide three times, shaping and pruning, etc.

[0006] The prior art has the following deficiencies: conventional cultivation and management of Sunshine No. 1 tangerine and pomelo usually results in low sugar content, high acidity, and poor slag-forming properties, requiring improvement in cultivation technology, and the cost of fertilizers purchased to improve quality is high. Summary of the invention

[0007] In order to simultaneously solve the technical problems of poor quality and high cost of tangerines and pomeloes, the present invention provides a Sunshine No. 1 tangerine and pomelo fruit quality improving agent, which is characterized by comprising a solid-liquid mixture of water, sugar, phosphate and protein.

[0008] Preferably, the protein is milk and shrimp.

[0009] Furthermore, the milk is fresh milk or pure milk that is expired within 1 year.

[0010] Furthermore, the shrimps are shrimps that are expired within 2 years.

[0011] Preferably, the sugar is brown sugar that is expired within 1.5 years.

[0012] Preferably, the phosphate is potassium tripolyphosphate, and the purity of potassium tripolyphosphate is ≥95%.

[0013] Preferably, the final contents of the sugar, phosphate, milk and shrimp are 3wt%-5wt%, 8wt%-10wt%, 20wt%-30t% and 7wt%-10wt% of the mixture respectively.

[0014] A method for preparing a Sunshine No. 1 tangerine and pomelo fruit quality improving agent, characterized in that it comprises the following steps: Step 1, dissolve sugar in water; Step 2: Crush and sieve the shrimp to less than 14 mesh, add phosphate, milk and shrimp in sequence, stir thoroughly to dissolve each one before adding the next one, finally add water to dilute and stir thoroughly.

[0015] A method for using a Sunshine No. 1 tangerine and pomelo fruit quality improver, characterized in that it comprises the following steps: 3-4 months after the Sunshine No. 1 tangerine and pomelo have faded, fully stirring before use, evenly sprinkling near the drip line of the tree crown, and then rotary tilling to a depth of 10-15 cm to mix it evenly with the soil.

[0016] Application of a Sunshine No. 1 tangerine and pomelo fruit quality improving agent in tangerine and pomelo planting.

[0017] The present invention has the following beneficial effects: 1. The present invention can increase the sugar content, reduce the acidity and improve the slag-forming property of Sunshine No. 1 tangerine and pomelo fruit; 2. The present invention improves the fruit quality of Sunshine No. 1 tangerine and pomelo without adversely affecting other traits; 3. The present invention can turn expired brown sugar, milk and shrimp into valuables, has low preparation cost, is safe and harmless, and is easy to use, which is conducive to its popularization and application. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods: 1. Definition Tangelo: Tangelo ( Citrus reticulata × Citrus grandis ), a hybrid of the wide-skinned mandarin orange and pomelo of the genus Citrus in the Rutaceae family, with an open tree posture and strong tree vigor. The fruit is oblate and compact, with a slightly raised fruit stalk and a flat top. The peel is orange-yellow and the surface is relatively smooth. It has a combined aroma and taste of tangerine, orange and pomelo. The single fruit weighs about 300 grams, with few or no seeds. The flesh is orange and soft, with a solid content of more than 12.5% ​​and an acid content of 0.5%-1.0%. It matures in mid-to-late November. Most tangerine and pomelo varieties are resistant to storage and transportation and can be stored until the end of May of the following year without changing taste. Crown drip: the outermost edge of the crown branches.

[0020] wt%: It is the abbreviation of mass percentage, which indicates the mass percentage of a substance in a mixture.

[0021] ATAGO PAL-1 Refractometer: Also known as digital sugar meter, digital concentration meter or fruit sugar meter, it is a portable digital refractometer with a wide range of applications and functions.

[0022] How to use: Prepare tools: paper towels, alcohol, cotton swabs, clean water, etc.

[0023] Clean the instrument: First, wet the instrument housing with a paper towel. Stubborn dirt can be wiped with alcohol. Then clean the prism surface with clean water, and then use a cotton swab dipped in alcohol to clean the prism. Note that one end of the cotton swab can only be wiped along the prism once. After wiping, please use the other end to wipe, and finally rinse with clean water. Finally, use pure water to adjust the zero to verify whether the cleaning has been completed.

[0024] Measuring steps: drop 2-3 drops of sample onto the prism surface, press the START button, and the measured value and temperature will be displayed after 3 seconds.

[0025] NaOH neutralization titration method: NaOH neutralization titration method uses the principle of acid-base neutralization reaction to titrate NaOH solution of unknown concentration with an acid of known concentration (such as hydrochloric acid). The accurate concentration of NaOH solution is calculated by measuring the volume of acid consumed during the titration process.

[0026] Fruit pulp crumbing property: Fruit pulp crumbing property usually refers to the degree of crushing and the fineness of the taste when the fruit pulp is chewed in the mouth.

[0027] TA.XT Plus Texture Analyzer: Designed and manufactured by British company Stable Micro Systems, TA.XT Plus Texture Analyzer is a high-precision texture analysis instrument. It can make a digital representation of the physical properties of samples and is widely used in grain and oil food, flour products, meat products, rice products, fruits and vegetables, snack foods, candy, gel, dairy products, pet food and other fields.

[0028] Small shrimps are commonly known as "shrimp skins": they are dried products of hair shrimps, and there are two types of dried products: raw dried products and cooked dried products. Shrimp skins are small and thin, and after drying they are so thin that people feel like they are just a layer of skin.

[0029] Example 1 A Sunshine No. 1 tangerine and pomelo fruit quality improver comprises a solid-liquid mixture of 59 kg of water, 3 kg of brown sugar, 8 kg of potassium tripolyphosphate, 20 catties of milk and 10 kg of dried shrimps.

[0030] The brown sugar was purchased from a Chongqing supermarket and was food-grade brown sugar that was 18 months expired.

[0031] The potassium tripolyphosphate is industrial grade and its molecular formula is K5P3O 10 , purity ≥97%.

[0032] The milk was purchased from pure milk that was 12 months expired from a supermarket in Chongqing.

[0033] The dried shrimps were purchased from dried seafood shrimps that were expired for 8 months in a supermarket in Chongqing, and were crushed in advance with a grinder and passed through a 14-mesh sieve.

[0034] A method for preparing a Sunshine No. 1 tangerine and pomelo fruit quality improving agent comprises the following steps: Step 1: Take 3 kg of brown sugar, add 15 kg of water, and stir thoroughly to dissolve completely; Step 2, add 8 kg of potassium tripolyphosphate and 20 kg of water, and stir thoroughly until completely dissolved; Step 3, then add 20 kg of milk and stir evenly; Step 4: Add 10 kg of crushed and sieved dried shrimps and 24 kg of water, stir thoroughly to obtain 100 kg of brown sugar-potassium tripolyphosphate-milk-dried shrimp mixture finished product.

[0035] Application test of Sunshine No.1 tangerine and pomelo fruit quality improver 1. Product application test of Example 1 in 2022 The orchard under investigation is the citrus orchard of Chongqing Guilai Fruit Industry Co., Ltd. in Maliu Village, Xianfeng Town, Jiangjin District, Chongqing. The orchard is a citrus orchard of the Sunshine No. 1 tangerine (the rootstocks used are Carrizo trifoliate orange base rootstock and Tarocco blood orange intermediate rootstock) that was grafted in March 2016 and is under routine cultivation and management.

[0036] In 2022, the flowering period of the Sunshine No. 1 tangerine and pomelo in the experimental orchard is mid-to-late April. On July 19, 30 high-grafted Sunshine No. 1 tangerine and pomelo trees with basically the same growth and fruiting were selected (estimated yield of about 60 kilograms per plant) and divided into two groups, 15 trees in each group, namely the treatment group and the control group.

[0037] For the Sunshine No. 1 Tangelo trees in the treatment group, 6 kg of the mixture prepared in Example 1 was sprinkled near the drip line of the tree crown (mixed before spreading), and then the tillage was rotary tilled to a depth of about 15 cm with a rotary tiller, and the tillage was rotary tilled back and forth 3 times. For the Sunshine No. 1 Tangelo trees in the control group, 6 kg of clear water was poured, and then the tillage was rotary tilled to a depth of about 15 cm with a rotary tiller, and the tillage was rotary tilled back and forth 3 times. The other cultivation management of the treatment group and the control group was exactly the same.

[0038] Fruit samples were collected for measurement on November 18, 2022. One medium-sized fruit was collected from each tree in the treatment group and the control group, and one fruit sample was collected from every 5 trees (1 replicate of 20 fruits). Both the treatment group and the control group had 3 fruit sample replicates. The single fruit weight, soluble solids (sugar content, TSS) content, total acid (TA) content, and slagging (measuring the shear force of the fruit segments) of each replicate fruit sample were measured. The results are shown in Table 1.

[0039] Among them, the method for detecting the weight of a single fruit is: weighing with an electronic balance.

[0040] The method for detecting the soluble solids (TSS) content is: using ATAGO PAL-1 refractometer.

[0041] The total acid (TA) content is determined by the NaOH neutralization titration method.

[0042] The pulp-forming property of the fruit was tested by TA.XT plus texture analyzer (Stable Micro Systems, UK). The probe was HDP / BS, the test speed was 5 mm / s, and the distance was 40 mm. Two pods were randomly selected from each fruit for testing. "Pod shear force ≤ 1.5 kg" was considered pulp-forming, "1.5 kg < pod shear force ≤ 2.5 kg" was considered moderate pulp-forming, and "2.5 kg < pod shear force" was considered non-slurry-forming. In addition, three pods were randomly selected from each fruit for taste identification. The remaining pods were squeezed for the aforementioned TSS and TA determinations.

[0043] Lightness L*, hue a* (redness) and b* (yellowness) were measured using a KONICA MINOLTA CR-400 colorimeter.

[0044] Table 1 Fruit quality test results after application of Sunshine No. 1 tangerine and pomelo quality improver in 2022 From the results in Table 1, we can see that compared with the control, the fruit of Sunshine No. 1 treated with the quality improver was slightly larger, the fruit surface brightness increased, and the yellowness decreased, but these three indicators did not reach a significant difference level; the fruit sugar content (TSS) and redness increased significantly, the acidity (TA) decreased significantly, and the capsule shear force decreased by nearly half. The fruit flavor of the treatment group was sweet, slag-free, and rich in aroma, while the control group was sweeter, sour, non-slag-free, and fragrant, and the difference between the two was obvious.

[0045] Example 2 A Sunshine No. 1 tangerine and pomelo fruit quality improver includes a liquid mixture of 48 kg of water, 5 kg of sugar, 10 kg of potassium tripolyphosphate, 30 catties of milk and 7 kg of shrimp.

[0046] The brown sugar is a commercially available food.

[0047] The potassium tripolyphosphate is fertilizer grade and its molecular formula is K5P3O 10 , purity ≥95%.

[0048] The milk in question was pure milk that had expired for 5 months from a Chongqing food store.

[0049] The dried shrimps were from a Chongqing food store that had expired for two years. They were crushed in advance using a grinder and passed through a 14-mesh sieve.

[0050] A method for preparing a Sunshine No. 1 tangerine and pomelo fruit quality improving agent comprises the following steps: Step 1: Take 5 kg of brown sugar, add 20 kg of water, and stir thoroughly to dissolve completely; Step 2, add 10 kg of potassium tripolyphosphate and 20 kg of water, and stir thoroughly until completely dissolved; Step 3, then add 30 kg of milk and stir evenly; Step 4: Add 7 kg of crushed and sieved dried shrimps and 8 kg of water, stir thoroughly to obtain 100 kg of brown sugar-potassium tripolyphosphate-milk-dried shrimp mixture finished product.

[0051] 2. Product application test of Example 2 in 2023 The orchard under investigation is the citrus orchard of Chongqing Guilai Fruit Industry Co., Ltd. in Maliu Village, Xianfeng Town, Jiangjin District, Chongqing. The orchard is a citrus orchard of the Sunshine No. 1 tangerine (the rootstocks used are Carrizo trifoliate orange base rootstock and Tarocco blood orange intermediate rootstock) that was grafted in March 2016 and is under routine cultivation and management.

[0052] In 2023, the flowering period of the Sunshine No. 1 tangerine and pomelo in the experimental orchard is late April. On July 22, 30 high-grafted Sunshine No. 1 tangerine and pomelo trees with basically the same growth and fruiting were selected (estimated yield of about 50 kilograms per plant) and divided into two groups, each with 15 trees, namely the treatment group and the control group.

[0053] For the Sunshine No. 1 tangerine and pomelo trees in the treatment group, 5 kg of the quality improver prepared in Example 2 was sprinkled near the drip line of the tree crown, and then a rotary tiller was used to till the soil to a depth of about 10 cm, and the soil was tilled back and forth 3 times. For the Sunshine No. 1 tangerine and pomelo trees in the control group, 5 kg of clear water was poured, and then a rotary tiller was used to till the soil to a depth of about 10 cm, and the soil was tilled back and forth 3 times. The other cultivation management of the treatment group and the control group was exactly the same.

[0054] Fruit samples were collected for measurement on November 26, 2023. One medium-sized fruit was collected from each tree in the treatment group and the control group, and one fruit sample was repeated for every 5 trees (1 repeat for 20 fruits). There were 3 fruit sample repeats for both the treatment group and the control group. The single fruit weight, soluble solids (sugar content, TSS) content, total acid (TA) content, and slagging (determining the shear force of the fruit segments) of each repeated fruit sample were measured. The results are shown in Table 2.

[0055] The fruit quality determination method is the same as the above-mentioned "2022 Example 1 Product Application Test".

[0056] Table 2 Fruit test results after application of Sunshine No. 1 tangerine and pomelo quality improver in 2023 There was more rain in the autumn and winter of 2023. Compared with 2022, the single fruit weight increased and the sugar and acid content of the fruit decreased. As can be seen from the results in Table 2, compared with the control, the fruit of Sunshine No. 1, which was applied with the quality improver, became slightly smaller, and the brightness and yellowness of the fruit surface also decreased, but none of these three indicators reached a significant difference level; while the fruit sugar content (TSS) and redness increased significantly, the acidity (TA) decreased significantly, and the capsule shear force decreased by about half. The fruit flavor of the taste identification treatment group is sweet, slag-free, and rich in aroma, while the control group is sweeter, sour, non-slag-free, and slightly fragrant. The difference between the two is obvious.

[0057] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A Sunshine No. 1 tangerine and pomelo fruit quality improver, characterized in that: A solid-liquid mixture consisting of water, sugar, phosphate and protein.

2. The Sunshine No. 1 tangelo fruit quality improving agent according to claim 1, characterized in that: The protein is milk and shrimp.

3. The Sunshine No. 1 tangelo fruit quality improving agent according to claim 2, characterized in that: The milk is fresh milk or pure milk that is expired within 1 year.

4. The Sunshine No. 1 tangelo fruit quality improving agent according to claim 3, characterized in that: The shrimps are shrimps that are expired within 2 years.

5. The Sunshine No. 1 tangelo fruit quality improving agent according to claim 3, characterized in that: The sugar used is brown sugar that is within one and a half years of expiration.

6. The Sunshine No. 1 tangerine and pomelo fruit quality improving agent according to any one of claims 2 to 5, characterized in that: The phosphate is potassium tripolyphosphate, and the purity of potassium tripolyphosphate is ≥95%.

7. The Sunshine No. 1 tangelo fruit quality improving agent according to claim 6, characterized in that: The final contents of the sugar, phosphate, milk and shrimp are 3wt%-5wt%, 8wt%-10wt%, 20wt%-30wt% and 7wt%-10wt% of the mixture respectively.

8. The method for preparing the Sunshine No. 1 tangelo fruit quality improving agent according to claims 1-7, characterized in that: The following steps are involved: Step 1, dissolve sugar in water; Step 2: Crush and sieve the shrimp to less than 14 mesh, add phosphate, milk and shrimp in sequence, stir thoroughly to dissolve each one before adding the next one, finally add water to dilute and stir thoroughly.

9. The method for using the Sunshine No. 1 tangerine and pomelo fruit quality improving agent according to claims 1-7, characterized in that: The following steps are involved: 3-4 months after the Sunshine No. 1 tangerine and pomelo have bloomed, stir it thoroughly before use, sprinkle it evenly near the drip line of the tree crown, and then till it to a depth of 10-15 cm to mix it evenly with the soil.

10. Use of the Sunshine No. 1 Tangelo Fruit Quality Improver according to any one of claims 1 to 7, characterized in that: Application of Sunshine No. 1 tangerine and pomelo fruit quality improver in tangerine and pomelo cultivation.

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