A method for improving anthocyanin coloring in blood orange epidermis

Abstract

The present invention discloses a method for improving the anthocyanin coloring of the blood orange epidermis in the field of blood orange planting, which includes bagging the surface of the blood orange before it is about to mature, the fruit bag selected in the bagging process includes a surface layer and an inner layer, the surface layer of the fruit bag is processed with yellow light and red light transmissive stripes, the inner layer of the fruit bag is processed with red waxed wood pulp paper, the wax on the surface of the wood pulp paper forms convex wax points, each wax point has a gap between them, and the wax points are arranged in a straight line along the inner layer of the wood pulp paper, the bagged blood orange is sprayed with a colorant, and finally auxiliary lighting is introduced during the spraying process. During the implementation of the technical solution, the content of anthocyanin on the surface of the blood orange is increased, thereby achieving the deepening of the color of the blood orange epidermis. Compared with the existing technology for deepening the color of the blood orange, the technical solution uses a bagging method to protect the colorant, and the fruit bag receives the colorant and the blood orange during the protection, so that a relatively sealed space is formed between the colorant and the blood orange to prevent the colorant from dripping into the soil.

Description

Technical Field

[0001] The invention belongs to the field of blood orange planting, and in particular relates to a method for improving anthocyanin coloring of blood orange epidermis. Background Art

[0002] Blood orange is a variant of the navel orange of the Rutaceae family, with deep red blood-like flesh and juice. The main varieties are Moro blood orange, Tarocco blood orange and Sanguinero blood orange. China has new Tarocco blood orange strains such as Ruby blood orange. Blood orange is rich in nutrition and suitable for fresh consumption. The juice is rich in polyphenol compounds such as vitamin E, vitamin P, carotene and flavonoids, which have physiological effects such as anti-oxidation, prevention and treatment of cardiovascular diseases and inhibition of cancer. Moro blood orange is the brightest of the three blood oranges, with deep purple flesh and reddish-orange peel. It has a special sweet taste with a slight raspberry flavor.

[0003] In the breeding process of blood oranges, blood oranges with dark skin are often more valuable in the market. The most critical factor affecting the color of blood orange is the content of anthocyanins in blood oranges. In order to increase the anthocyanin content of blood oranges, the prior art CN113973636A provides a method for increasing the anthocyanin content of Tarocco blood oranges. The overall design of the method improves the anthocyanin content of Tarocco blood orange fruits through planting, cultivation, production and storage, thereby greatly improving the nutritional value of Tarocco blood oranges.

[0004] However, the above method relies on artificial cultivation of synthetic anthocyanins, which has uncertainty about the coloring site of anthocyanins. The quality of the cultivated blood oranges varies, affecting the overall value. Summary of the invention

[0005] In order to solve the above problems, the object of the present invention is to provide a method for increasing the anthocyanin coloring of blood orange skin to enhance the value of blood orange.

[0006] In order to achieve the above object, the technical scheme of the present invention is as follows: a method for improving the anthocyanin coloring of blood orange epidermis comprises bagging the surface of blood oranges before they are about to mature, the fruit bag selected in the bagging process comprises a surface layer and an inner layer, the surface layer of the fruit bag is processed with yellow light-transmitting and red light-transmitting stripes, the inner layer of the fruit bag is processed with red waxed wood pulp paper, the wax on the surface of the wood pulp paper forms convex wax dots, each wax dot has a gap between them, the wax dots are arranged in a straight line along the inner layer of the wood pulp paper, a colorant is sprayed on the bagged blood oranges, and finally auxiliary light is introduced during the spraying process.

[0007] Further, the following steps are included:

[0008] S1, the whole tree spraying stage, spraying the colorant on the whole blood orange tree;

[0009] S2, pre-maturity management of blood oranges, bagging the surface of blood oranges before maturity;

[0010] S3, coloring the blood orange fruit, spraying the blood orange covered with the fruit bag with a colorant by spraying cloth;

[0011] S4, irradiation of blood oranges, irradiating the blood oranges with artificial light or sunlight after the spraying operation is completed.

[0012] Furthermore, in S1, after the spraying process is completed, the surface of the branches and leaves of the blood orange tree is repeatedly sprayed with the colorant every 2-3 weeks.

[0013] Furthermore, when bagging in S2, the wax spots on the inner layer of the fruit bag are placed against the blood oranges, and then the fruit bag is tied tightly along the branches of the blood oranges.

[0014] Furthermore, the coloring rate in S2 is calculated as follows: coloring rate = blood orange colored area / blood orange surface area*100%.

[0015] Furthermore, in S4, when the operator pinches the fruit bag on the surface of the blood orange with fingers, the coloring is completed when there is no obstruction between the fruit bag and the blood orange.

[0016] The following beneficial effects are achieved by adopting the above scheme: 1. During the implementation of this technical scheme, the content of anthocyanins on the surface of blood orange is increased, thereby deepening the color of the blood orange skin.

[0017] 2. Compared with the existing technology for deepening the color of blood oranges, this technical solution uses bagging to protect the colorant. During protection, the fruit bag receives the colorant and blood oranges, thereby forming a relatively sealed space between the colorant and the blood oranges to prevent the colorant from dripping into the soil.

[0018] 3. Compared with the existing technology of bag planting, the fruit bag in this technical solution adopts a double-layer structure. The outer layer of the fruit bag transmits red light, and then the inner layer of the fruit bag absorbs the red light, thereby increasing the formation of the red color on the surface of the blood orange and preventing light of other colors from affecting the synthesis of the internal pigment of the blood orange.

[0019] 4. Compared with the existing technology of filtering light pigments, the present technical solution uses wax dots on the surface of the fruit bag to form a flow channel for the colorant. The wax dots hold the dripping colorant, which is convenient for the blood orange to continuously absorb. At this time, the possibility of the colorant dripping along the surface of the blood orange is reduced. At the same time, the wax dots divide the position of the blood orange surface, and the blood orange forms cells with equal spacing between two wax dots, thereby avoiding uneven dyeing.

[0020] 5. Compared with the existing technology for avoiding uneven dyeing, this technical solution uses auxiliary light to accelerate the absorption of the colorant. At the same time, the wax spots are melted after the light continues to shine. After the wax spots soaked in the colorant are melted, the colorant wrapped in the wax spots is released, thereby increasing the use efficiency of the colorant.

[0021] 6. Compared with the prior art of releasing wax dot colorants, the present technical solution sprays the colorants on the liquid surface during the growth cycle of the blood orange tree, gradually introduces the colorants into the blood orange along the fruit growth stage, and also colors the inside of the blood orange.

[0022] 7. Compared with the existing technology for coloring the inside of blood oranges, the present technical solution can determine the coloring time by the melting of the wax spots, thereby accurately removing the bagging time of the fruit, making it easier for the fruit to absorb sunlight naturally and improving the sweetness of the bagged fruit. DETAILED DESCRIPTION

[0023] The following is further described in detail through specific implementation methods:

[0024] Embodiment 1

[0025] Embodiment 1: A method for improving the anthocyanin coloring of blood orange epidermis comprises bagging the surface of blood oranges before they are about to mature, wherein the fruit bag selected in the bagging process comprises a surface layer and an inner layer, wherein the surface layer of the fruit bag is processed with yellow light-transmitting and red light-transmitting stripes, and the inner layer of the fruit bag is processed with red waxed wood pulp paper, wherein the wax on the surface of the wood pulp paper forms convex wax dots, each wax dot has a gap between them, and the wax dots are arranged in a straight line along the inner layer of the wood pulp paper, a colorant is sprayed on the bagged blood oranges, and finally auxiliary light is introduced during the spraying process.

[0026] The following steps are involved:

[0027] S1, the whole tree spraying stage, spraying the colorant on the whole blood orange tree, and after the spraying process is completed, repeatedly spraying the colorant on the branches and leaves of the blood orange tree every 2-3 weeks;

[0028] S2, pre-maturity management of blood oranges, bagging the surface of pre-maturity blood oranges, placing the wax points on the inner layer of the fruit bag against the blood oranges, and then tying the fruit bag tightly along the branches of the blood oranges. The coloring rate is calculated as follows: coloring rate = blood orange coloring area / blood orange surface area * 100%;

[0029] S3, coloring the blood orange fruit, spraying the blood orange covered with the fruit bag with a colorant by spraying cloth;

[0030] S4, illumination of blood oranges, after the spraying operation is completed, the blood oranges are illuminated with artificial light or sunlight, and the coloring is completed when the operator pinches the fruit bag on the surface of the blood orange with his fingers and there is no obstruction between the fruit bag and the blood orange.

[0031] This technical solution uses bagging to protect the colorant. During protection, the fruit bag receives the colorant and blood orange, thereby forming a relatively sealed space between the colorant and the blood orange to prevent the colorant from dripping into the soil. The fruit bag adopts a double-layer structure. The outer layer of the fruit bag transmits red light, and then the inner layer of the fruit bag absorbs the red light, thereby increasing the formation of the red color on the surface of the blood orange and preventing other colors of light from affecting the synthesis of the internal pigment of the blood orange.

[0032] Then, the wax dots on the surface of the fruit bag are used to form a flow channel for the colorant. The wax dots catch the dripping colorant, which facilitates the blood orange to continue to absorb. At this time, the possibility of the colorant dripping along the surface of the blood orange is reduced. At the same time, the wax dots divide the position of the blood orange surface, and the blood orange forms equally spaced cells between two wax dots, avoiding uneven dyeing.

[0033] Embodiment 2

[0034] The difference between this embodiment and the above embodiment is that this embodiment discloses the selection and mixing ratio of the colorant. This technical solution uses the same variety of blood oranges to conduct a control experiment with a basic group (CK) and experimental groups A / B / C, wherein the experimental group A / B / C is divided into three groups for control. Please refer to Table 1 for the control results.

[0035]

[0036] Table 1

[0037] From the above table, we can see that the coloring effect is best when using 0.6g / L of benzyl adenine (6-BA).

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] 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 method for increasing anthocyanin coloration in blood orange epidermis, characterized in that: The method comprises bagging the surface of blood oranges before they are about to mature, wherein the fruit bags used in the bagging process adopt a double-layer structure including a surface layer and an inner layer, the surface layer of the fruit bag is processed with yellow light-transmitting and red light-transmitting stripes, and the inner layer of the fruit bag is processed with red waxed wood pulp paper, the wax on the surface of the wood pulp paper forms convex wax dots, each wax dot has a gap between them, and the wax dots are arranged in a straight line along the inner layer of the wood pulp paper, colorant is sprayed on the bagged blood oranges, the wax dots form a flow channel for the colorant, the wax dots catch the dripping colorant, and after the spraying is completed, the blood oranges are irradiated with artificial light or sunlight, the light melts the wax dots impregnated with the colorant and releases the colorant, and the bagging is removed after the wax dots melt.

2. A method for improving anthocyanin coloration in blood orange peel according to claim 1, characterized in that: The following steps are involved: S1, the whole tree spraying stage, spraying the colorant on the whole blood orange tree; S2, pre-maturity management of blood oranges, bagging the surface of blood oranges before maturity; S3, coloring the blood orange fruit, spraying the blood orange covered with the fruit bag with a colorant by spraying cloth; S4, irradiation of blood oranges. After the spraying operation is completed, the blood oranges are irradiated with artificial light or sunlight. The light melts the wax spots and releases the colorant. After the wax spots melt, the bagging is removed.

3. A method for improving anthocyanin coloration in blood orange peel according to claim 2, characterized in that: In S1, after the spraying process is completed, the colorant is repeatedly sprayed on the branches and leaves of the blood orange tree every 2-3 weeks.

4. A method for improving anthocyanin coloration in blood orange epidermis according to claim 2, characterized in that: When bagging in S2, the wax spots on the inner layer of the fruit bag are placed against the blood oranges, and then the fruit bag is tied tightly along the branches of the blood oranges.

5. A method for improving anthocyanin coloration in blood orange epidermis according to claim 2, characterized in that: The calculation method of the coloring rate in S2 is: coloring rate = blood orange colored area / blood orange surface area*100%.

6. A method for improving anthocyanin coloration in blood orange epidermis according to claim 2, characterized in that: In S4, when the operator pinches the fruit bag on the surface of the blood orange with fingers and there is no obstruction between the fruit bag and the blood orange, the coloring is completed after the wax point melts.

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