Method for reducing swallow shred breakage in cubilose soaking
Through constant temperature water bath oscillation, ultrasonic oscillation plus okra polysaccharide soaking and airflow splitting, the problem of low efficiency of traditional artificial separation of bird's silk is solved, reducing bird's silk fracture, improving the quality and consistency of bird's nest products, and meeting the market's high standards Demand for quality bird's nest products.
Patent Information
- Application Number
- CN202411344548.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2024-12-13
AI Technical Summary
The traditional method of artificial bird's silk separation is inefficient and inconsistent, resulting in incomplete soaking of bird's nests, increasing raw material loss and resource waste, making it difficult to meet market demand.
Constant temperature water bath oscillation, ultrasonic oscillation and okra polysaccharide soaking are used, combined with air flow splitting, low-pressure rinsing and centrifuge dehydration, to reduce the breakage of the swift wire and improve the integrity and quality of the swift wire.
Effectively reduce bird's silk breakage, improve the quality and consistency of bird's nest products, improve production efficiency, reduce production costs, and meet the needs of high-quality bird's nest products.
Smart Images
Figure CN119111769A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of bird's nest processing, and in particular to a method for reducing the breakage of bird's nest fibers during the foaming of bird's nests. Background Art
[0002] Bird's nest, as a precious nourishing food, has been highly praised since ancient times for its unique nutritional value and medicinal effects. Bird's nest is the edible part of the nest built by the swiftlet (Collocalia esculenta) and other swiftlets of the same genus using the secretions of the sublingual glands. However, in the processing of bird's nest, especially the separation of bird's nest fibers, it currently mainly relies on traditional manual operation, which is not only inefficient, but also accompanied by a series of technical difficulties and challenges.
[0003] First of all, in the processing of bird's nests, the separation of bird's nest silk is a crucial step, which directly affects the quality and taste of the final product. However, the traditional manual separation method is highly dependent on the experience and skills of the operator, and this dependence leads to inconsistent separation results. The differences in technical level, force control and operation time of different operators often lead to incomplete foaming of the bird's nest, and some bird's nest silk is still attached to the bird's nest board, which is difficult to completely peel off. This not only reduces the purity of the product, but also increases the difficulty of subsequent processing.
[0004] In addition, the manual process of separating bird's nest silk is not only time-consuming and labor-intensive, but also greatly limits the scale and efficiency of production. Against the backdrop of rising labor costs, this traditional production method that relies on a large amount of manual labor can no longer meet the market's growing demand for bird's nest products. In addition, long-term manual operations can easily lead to the breakage of bird's nest silk, increasing the loss of raw materials and further exacerbating the waste of resources.
[0005] Based on the above problems, the bird's nest processing industry is facing an urgent need for technological innovation. How to develop an efficient, accurate, automated bird's nest foaming technology that can effectively reduce the breakage of bird's nest fibers to replace the traditional manual operation method has become a common focus of attention within and outside the industry. This will not only help improve production efficiency and reduce production costs, but also significantly improve product quality and consistency, meeting consumers' expectations for high-quality bird's nest products.
[0006] In view of this, the present invention is proposed. Summary of the invention
[0007] The purpose of the present invention is to provide a method for reducing the breakage of bird's nest fibers during the foaming of bird's nests. The method can effectively reduce the breakage of bird's nest fibers during the foaming process of the bird's nests and improve the quality of the bird's nests.
[0008] The present invention provides a method for reducing the breakage of bird's nest fibers during the foaming of bird's nests, comprising the following steps:
[0009] S1. Soak the dry bird's nest in water and place it in a constant temperature water bath oscillator for oscillation to obtain a bird's nest that has been initially soaked;
[0010] S2, placing the initially soaked bird's nest in an ultrasonic oscillator, adding okra polysaccharide, and continuing to soak to obtain a fully soaked bird's nest;
[0011] S3, filtering, washing and draining the fully soaked bird's nest;
[0012] S4. The drained bird's nest is sequentially subjected to air flow separation, low-pressure washing and centrifuge dehydration to obtain bird's nest silk.
[0013] The present invention firstly uses the oscillation of a constant temperature water bath oscillator to uniformly heat and stress the bird's nest in water, which is conducive to the initial expansion and softening of the bird's nest and reduces the breakage of bird's nest silk during the soaking process; then, the bird's nest after the initial soaking is placed in an ultrasonic oscillator, and okra polysaccharide is added to continue soaking, wherein the high-frequency vibration of the ultrasonic oscillator can further promote the expansion and softening of the bird's nest, and the addition of okra polysaccharide helps the bird's nest to further absorb water and expand, and reduces the breakage of bird's nest silk during the soaking process. Further, the completely soaked bird's nest is filtered, washed and drained to remove excess water and possible impurities in the bird's nest, such as fine feathers, sand particles, etc. Finally, the drained bird's nest is sequentially subjected to airflow separation, low-pressure washing and centrifuge dehydration treatment to obtain bird's nest silk. Among them, the airflow is used to disperse the fibers in the bird's nest, which can reduce the adhesion and entanglement between the fibers, thereby reducing the breakage of bird's nest silk during the separation process; low-pressure washing and centrifuge dehydration can further remove the moisture and impurities in the bird's nest silk, ensuring the integrity and quality of the bird's nest silk.
[0014] Therefore, the present invention can effectively reduce the breakage of bird's nest fibers during the foaming and processing of bird's nests through the above steps, and improve the integrity and quality of bird's nest fibers.
[0015] As a preferred embodiment of the present technical solution, in step S1, the mass ratio of dry bird's nest to water is 1: (20-80), and preferably 1: 40, wherein the water used is preferably purified water. This is because the chlorine, impurities and minerals in tap water will destroy the nutrition and taste of the bird's nest, affecting the nutritional value and foaming effect of the bird's nest, while purified water does not have these impurities and can better maintain the nutrition and taste of the bird's nest, and prevent the bird's nest from becoming watery or deteriorating.
[0016] As a preferred embodiment of the present technical solution, in step S1, during the oscillation treatment, the temperature of the constant temperature water bath is controlled to be 20-30°C, the oscillation frequency of the oscillator is 100-200 rpm / min, and the oscillation time is 1-3h.
[0017] Bird's nests are rich in water-soluble proteins and other active substances. If they are soaked in water at too high a temperature (such as 50℃-80℃), these proteins and other active substances may be denatured by heat, resulting in the loss of nutrients. In the temperature range of 20-30℃, the nutrients in the bird's nest can be effectively protected and avoid damage caused by high temperature. In addition, in this temperature range, water molecules can easily enter the bird's nest tissue, allowing the bird's nest to be soaked quickly, which can not only shorten the soaking time, but also improve the soaking efficiency. In addition, the bird's nest after soaking will be softer, smoother and fluffier in taste, which can better reflect the smooth taste of the bird's nest itself.
[0018] During the constant temperature soaking process, the auxiliary oscillation helps water molecules penetrate into the bird's nest more evenly, accelerates the soaking process, makes the bird's nest softer, and lays the foundation for subsequent processing.
[0019] As a preferred embodiment of the present technical solution, in step S2, the ultrasonic oscillator can generate high-frequency vibrations to further promote the penetration of water molecules into the bird's nest, making the bird's nest more completely foamed. Specifically, the power of the ultrasonic oscillator is 300-500W, and the ultrasonic time is 30min-1h.
[0020] As a preferred embodiment of the present technical solution, in step S2, the amount of okra polysaccharide added is 1%-3% of the mass of the dry bird's nest, and preferably 2%.
[0021] The present invention simultaneously adds okra polysaccharide during the ultrasonic oscillation process of the bird's nest. Okra polysaccharide, as a natural lubricant, can form a hydration layer on the contact surface through the interaction between its hydrophilic groups and water molecules, thereby reducing the shear force and the amplitude of the friction force, thereby reducing the deformation and wire breakage of the bird's nest caused by friction during the wire separation process.
[0022] In addition, okra polysaccharide is a water-soluble natural polysaccharide, which is not only easy to remove in the subsequent ultrasonic cleaning, so as not to significantly affect the nutritional components of the bird's nest, but the small amount of residual okra polysaccharide can also increase the viscosity and elasticity of the bird's nest, making the final bird's nest product more beautiful and delicious.
[0023] As a preferred embodiment of the present technical solution, in step S3, the fully soaked bird's nest is placed in a colander and shaken in water to filter out fine hairs and impurities, then rinsed with clean water and drained.
[0024] As a preferred embodiment of the present technical solution, in step S4, when the air flow is separated, the bird's nest that has been drained of water is placed in the air flow channel, and the pressure of the air flow is controlled to be 0.1-5MPa, and the flow rate of the air flow is controlled to be 5-20m / s.
[0025] Specifically, in the airflow separation technology, first, according to the requirements of the bird's nest, the drained bird's nest is placed in an airflow channel with a certain length and width to ensure that the airflow can pass through and act on the bird's nest evenly and stably; then, the pressure and flow of the airflow are adjusted by the compressor or air pump installed at the starting point of the airflow channel to ensure that the bird's nest silk is evenly separated. The present invention can specifically adjust the pressure and flow of the airflow according to the quality of the bird's nest, the degree of foaming, the thickness of the bird's nest silk, and the effect of silk separation. For example, the pressure of the airflow is any value between 0.1-5MPa, and the flow of the airflow is any value between 5-20m / s.
[0026] As a preferred embodiment of the present technical solution, in step S4, after air flow separation, a low-pressure flushing method is used to preliminarily wash away impurities in the bird's nest, remove heavy metals and nitrites therein, so as to improve the edible safety and taste of the bird's nest. Specifically, during the low-pressure flushing of the present invention, the water pressure can be controlled to be any value between 2-2.3 kg, the flushing time can be any value between 5-10 min, and the water used for the low-pressure flushing is preferably pure water with low conductivity to avoid impurities brought by the flushing water.
[0027] In addition, since the bird's nest contains a large amount of water-soluble protein, in order to prevent it from being lost due to long-term soaking and washing, which may even cause the bird's nest to become water-soluble, that is, the solid content is reduced, the bird's nest after low-pressure washing needs to be dehydrated. Specifically, when dehydrating in a centrifuge, the speed of the centrifuge can be controlled to any value between 1000-1500rpm / min, and the time is 2-5min, so as to ensure that the free water in the bird's nest is removed, and the bird's nest will not be broken in large quantities.
[0028] As a preferred embodiment of the present technical solution, the shape of the bird's nest includes any one or more of bird's nest pieces, bird's nest strips, bird's nest horns, bird's nest pieces and bird's nest cakes, and the present invention does not strictly limit it.
[0029] The method for reducing the breakage of bird's nest fibers during the foaming of the bird's nest of the present invention has at least the following beneficial effects:
[0030] In the method for reducing bird's nest fiber breakage during bird's nest foaming of the present invention, first, the dry bird's nest is immersed in water and placed in a constant temperature water bath oscillator for oscillation treatment to preliminarily foam the bird's nest. The constant temperature water bath can ensure that the bird's nest is foamed at a stable temperature to avoid the adverse effects of too high or too low temperature on the bird's nest; at the same time, the oscillation treatment helps water molecules to penetrate into the bird's nest more evenly, accelerates the foaming process, makes the bird's nest softer, and lays the foundation for subsequent treatment; in addition, the constant temperature and oscillation conditions also help to reduce bird's nest fiber breakage caused by uneven external force. Then, the bird's nest after the preliminary foaming is placed in an ultrasonic oscillator, and okra polysaccharide is added to continue to foam. Among them, the ultrasonic oscillator can generate high-frequency vibration, which can further promote the penetration of water molecules into the bird's nest, making the bird's nest more completely soaked; at the same time, the addition of okra polysaccharides may have multiple effects: first, as a protective agent, it can reduce the breakage of bird's nest fibers during soaking and subsequent processing; second, it may enhance the viscosity and elasticity of the bird's nest, making the final product more beautiful and delicious; in addition, ultrasonic vibration may also help remove impurities and odors in the bird's nest and improve the quality of the product. Further, the fully soaked bird's nest is filtered, washed and drained to remove excess water and possible impurities in the bird's nest, such as fine feathers, sand, etc. Finally, the drained bird's nest is processed by air flow separation, low-pressure washing and centrifuge dehydration in turn to obtain bird's nest fibers. Among them, the air flow separation technology is used to separate the fully soaked bird's nest into silk, which is not only easy to operate, but also has the advantages of good separation effect and little damage to the bird's nest silk; after separation, low-pressure washing is used to remove impurities and moisture remaining on the surface of the bird's nest while maintaining the integrity of the bird's nest silk; further, the moisture in the bird's nest is removed by dehydration using a centrifuge, making the bird's nest silk drier and easier to preserve.
[0031] The invention effectively reduces the breakage of bird's nest fibers during the soaking of bird's nests through the steps of constant temperature water bath oscillation soaking, ultrasonic oscillation and okra polysaccharide soaking, gentle filtering, cleaning and draining, fine air flow separation, low pressure washing and centrifuge dehydration, thereby improving the quality and taste of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0033] Figure 1 The present invention is a schematic flow chart of a method for reducing bird's nest fiber breakage during bird's nest foaming;
[0034] Figure 2This is a photo of the bird's nest and bird's nest silk prepared in Example 1 of the present invention;
[0035] Figure 3 This is a photo of the bird's nest and bird's nest silk prepared in Comparative Example 1 of the present invention;
[0036] Figure 4 This is a photo of the bird's nest and bird's nest silk prepared in Comparative Example 2 of the present invention;
[0037] Figure 5 This is a photo of the bird's nest and bird's nest silk prepared in Control Example 3 of the present invention. DETAILED DESCRIPTION
[0038] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this description, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0041] The bird's nest used in the following embodiments and comparative examples of the present invention is from Indonesia.
[0042] Example 1
[0043] S1. Soak the dry bird's nest in pure water, the mass ratio of the dry bird's nest to the pure water is 1: (20-80), and place it in a constant temperature water bath oscillator, control the temperature of the constant temperature water bath to 25°C, the oscillation frequency of the oscillator to 150rpm / min, and the oscillation time to 3h to obtain the bird's nest after preliminary foaming;
[0044] S2, placing the bird's nest after preliminary soaking in an ultrasonic oscillator with a power of 500 W, and adding 2% okra polysaccharide by weight of the dry bird's nest, and continuing to soak under ultrasonic conditions for 1 hour to obtain a completely soaked bird's nest;
[0045] S3. Place the fully soaked bird's nest in a colander and shake it in water to filter out fine hairs and impurities, then rinse with clean water and drain;
[0046] S4. Place the drained bird's nest in an air flow channel, and control the air flow pressure to 2MPa and the air flow rate to 10m / s. Separate the fully expanded bird's nest into silk. After the air flow is separated, use a low-pressure flushing method to preliminarily wash away impurities in the bird's nest and remove heavy metals and nitrites therein. The water pressure during low-pressure flushing is 2-2.3kg and the flushing time is 10min. Finally, use a centrifuge with a rotation speed of 1500rpm / min to dehydrate the bird's nest after low-pressure flushing for 2min to obtain bird's nest silk.
[0047] Example 2
[0048] S1. Soak the dry bird's nest in pure water, the mass ratio of the dry bird's nest to the pure water is 1:80, and place it in a constant temperature water bath oscillator, control the temperature of the constant temperature water bath to 30°C, the oscillation frequency of the oscillator to 100rpm / min, and the oscillation time to 2h to obtain the bird's nest after preliminary foaming;
[0049] S2, placing the bird's nest after preliminary soaking in an ultrasonic oscillator with a power of 500 W, adding 1% okra polysaccharide by weight of the dry bird's nest, and continuing to soak under ultrasonic conditions for 1 hour to obtain a completely soaked bird's nest;
[0050] S3. Place the fully soaked bird's nest in a colander and shake it in water to filter out fine hairs and impurities, then rinse with clean water and drain;
[0051] S4. Place the drained bird's nest in an air flow channel, and control the air flow pressure to 2.5MPa and the air flow rate to 12m / s. Separate the fully expanded bird's nest into silk. After the air flow is separated, use a low-pressure flushing method to preliminarily wash away impurities in the bird's nest and remove heavy metals and nitrites therein. The water pressure during low-pressure flushing is 2-2.3kg and the flushing time is 5min. Finally, use a centrifuge with a rotation speed of 1500rpm / min to dehydrate the bird's nest after low-pressure flushing for 2min to obtain bird's nest silk.
[0052] Example 3
[0053] S1. Soak the dry bird's nest in pure water, the mass ratio of the dry bird's nest to the pure water is 1:20, and place it in a constant temperature water bath oscillator, control the temperature of the constant temperature water bath to 30°C, the oscillation frequency of the oscillator to 200rpm / min, and the oscillation time to 2.5h to obtain the bird's nest after preliminary foaming;
[0054] S2, placing the bird's nest after preliminary soaking in an ultrasonic oscillator with a power of 500 W, adding 3% okra polysaccharide by weight of the dry bird's nest, and continuing to soak under ultrasonic conditions for 50 minutes to obtain a completely soaked bird's nest;
[0055] S3. Place the fully soaked bird's nest in a colander and shake it in water to filter out fine hairs and impurities, then rinse with clean water and drain;
[0056] S4. Place the drained bird's nest in an air flow channel, and control the air flow pressure to 3MPa and the air flow rate to 8m / s. Separate the fully expanded bird's nest into silk. After the air flow is separated, use a low-pressure flushing method to preliminarily wash away impurities in the bird's nest and remove heavy metals and nitrites therein. The water pressure during low-pressure flushing is 2-2.3kg and the flushing time is 5min. Finally, use a centrifuge with a rotation speed of 1500rpm / min to dehydrate the bird's nest after low-pressure flushing for 4min to obtain bird's nest silk.
[0057] Example 4
[0058] S1. Soak the dry bird's nest in pure water, the mass ratio of the dry bird's nest to the pure water is 1:50, and place it in a constant temperature water bath oscillator, control the temperature of the constant temperature water bath to 25°C, the oscillation frequency of the oscillator to 200rpm / min, and the oscillation time to 1.5h to obtain the bird's nest after preliminary foaming;
[0059] S2, placing the bird's nest after preliminary soaking in an ultrasonic oscillator with a power of 500 W, and adding 2% okra polysaccharide by weight of the dry bird's nest, and continuing to soak under ultrasonic conditions for 1 hour to obtain a completely soaked bird's nest;
[0060] S3. Place the fully soaked bird's nest in a colander and shake it in water to filter out fine hairs and impurities, then rinse with clean water and drain;
[0061] S4. Place the drained bird's nest in an air flow channel, and control the air flow pressure to 2MPa and the air flow rate to 10m / s. Separate the fully expanded bird's nest into silk. After the air flow is separated, use a low-pressure flushing method to preliminarily wash away impurities in the bird's nest and remove heavy metals and nitrites therein. The water pressure during low-pressure flushing is 2-2.3kg and the flushing time is 5min. Finally, use a centrifuge with a rotation speed of 1500rpm / min to dehydrate the bird's nest after low-pressure flushing for 2min to obtain bird's nest silk.
[0062] Example 5
[0063] S1. Soak the dry bird's nest in pure water, the mass ratio of the dry bird's nest to the pure water is 1:60, and place it in a constant temperature water bath oscillator, control the temperature of the constant temperature water bath to 30°C, the oscillation frequency of the oscillator to 100rpm / min, and the oscillation time to 2h to obtain the bird's nest after preliminary foaming;
[0064] S2, placing the bird's nest after preliminary soaking in an ultrasonic oscillator with a power of 500 W, adding 2.5% of okra polysaccharide by weight of the dry bird's nest, and continuing to soak under ultrasonic conditions for 40 minutes to obtain a completely soaked bird's nest;
[0065] S3. Place the fully soaked bird's nest in a colander and shake it in water to filter out fine hairs and impurities, then rinse with clean water and drain;
[0066] S4. Place the drained bird's nest in an air flow channel, and control the air flow pressure to 1MPa and the air flow rate to 15m / s. Separate the fully expanded bird's nest into silk. After the air flow is separated, use a low-pressure flushing method to preliminarily wash away impurities in the bird's nest and remove heavy metals and nitrites therein. The water pressure during low-pressure flushing is 2-2.3kg and the flushing time is 10min. Finally, use a centrifuge with a rotation speed of 1000rpm / min to dehydrate the bird's nest after low-pressure flushing for 5min to obtain bird's nest silk.
[0067] Example 6
[0068] S1. Soak the dry bird's nest in pure water, the mass ratio of the dry bird's nest to the pure water is 1:40, and place it in a constant temperature water bath oscillator, control the temperature of the constant temperature water bath to 25°C, the oscillation frequency of the oscillator to 200rpm / min, and the oscillation time to 2h to obtain the bird's nest after preliminary foaming;
[0069] S2, placing the bird's nest after preliminary soaking in an ultrasonic oscillator with a power of 500 W, and adding 3% okra polysaccharide by weight of the dry bird's nest, and continuing to soak under ultrasonic conditions for 1 hour to obtain a completely soaked bird's nest;
[0070] S3. Place the fully soaked bird's nest in a colander and shake it in water to filter out fine hairs and impurities, then rinse with clean water and drain;
[0071] S4. Place the drained bird's nest in an air flow channel, and control the air flow pressure to 2MPa and the air flow rate to 10m / s. Separate the fully expanded bird's nest into silk. After the air flow is separated, use a low-pressure flushing method to preliminarily wash away impurities in the bird's nest and remove heavy metals and nitrites therein. The water pressure during low-pressure flushing is 2-2.3kg and the flushing time is 10min. Finally, use a centrifuge with a rotation speed of 1500rpm / min to dehydrate the bird's nest after low-pressure flushing for 5min to obtain bird's nest silk.
[0072] Comparative Example 1
[0073] This control example is basically the same as Example 1, except that: in this control example, okra polysaccharide was not added during the ultrasonic oscillation process.
[0074] Comparative Example 2
[0075] This control example is basically the same as Example 1, except that: in the process of silk separation, this control example uses the silk separator disclosed in Chinese invention patent CN117297135A to separate the silk.
[0076] Comparative Example 3
[0077] This control example is basically the same as Example 1, except that: this control example adopts a manual silk separation method, that is, pressing the swallow corners to separate the swallow silks at the swallow corners from each other, and gently tearing them apart until the swallow silk width is about 2-3mm.
[0078] Figure 1 The present invention is a schematic flow chart of a method for reducing bird's nest fiber breakage during bird's nest foaming;
[0079] Figure 2-5 The photos are respectively of the bird's nest and bird's nest silk prepared by Example 1 of the present invention and Comparative Examples 1-3.
[0080] In order to characterize the bird's nest silk prepared by different methods in Example 1 and Comparative Examples 1-3, the bird's nest silk obtained by different methods was evaluated by visual inspection and physical property detection. The following are the evaluation methods and evaluation indicators.
[0081] Evaluation method: The evaluation panel consists of 50 members. They score the integrity, texture clarity, elasticity and toughness, and length of the bird's nest silk independently according to the evaluation indicators in Table 1. The average value of the cumulative total score is used as the evaluation result of the bird's nest silk. Table 1 and Table 2 are the scoring criteria and evaluation results respectively.
[0082] Table 1 Scoring criteria
[0083]
[0084] Table 2 Evaluation results
[0085] Completeness Length of swallowtail Elasticity and toughness Total score Example 1 38 36 17 91 Comparative Example 1 28 32 12 72 Comparative Example 2 32 28 15 75 Comparative Example 3 28 25 15 68
[0086] From Table 1-2 and Figure 2-5It can be seen that the bird's nest silk prepared in Example 1 of the present invention has a complete overall shape, is naturally loose and evenly distributed, has no obvious breakage or fragmentation, and when the bird's nest silk is gently touched, the bird's nest silk has good elasticity and toughness and is not easy to break. However, the bird's nest silk prepared in Control Examples 1-3 has poor looseness and uneven distribution, and has obvious breakage or fragmentation. This may be because no okra polysaccharide was added during the ultrasonic oscillation process in Control Example 1, which caused the bird's nest to lose the protective agent during the soaking and subsequent silk separation process, and the viscosity and elasticity of the bird's nest were not improved. Control Example 2 uses the silk separator disclosed in Chinese invention patent CN117297135A to separate the silk. The silk separator mainly separates the bird's nest silk by rotating the agitator. Although the separation efficiency of the bird's nest silk is improved to a certain extent, it is inevitable that the bird's nest silk is damaged during the rotation of the agitator, resulting in slightly poor separation and integrity of the bird's nest silk and shorter bird's nest silk. However, in Control Example 3, manual silk splitting is adopted, which not only has the problem of low silk splitting efficiency, but also easily causes the bird's nest silk to break and become short due to long-time manual operation, thereby reducing the quality of the bird's nest.
[0087] In summary, the present invention effectively reduces the breakage of bird's nest fibers during the soaking of bird's nests through the steps of constant temperature water bath oscillation soaking, ultrasonic oscillation and okra polysaccharide soaking, gentle filtering, cleaning and draining, fine air flow separation, low-pressure washing and centrifuge dehydration, maintains the integrity of the overall shape of the bird's nest, and improves the quality and taste of the bird's nest product.
[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for reducing the breakage of bird's nest fibers during the expansion of bird's nests, characterized in that: The following steps are involved: S1. Soak the dry bird's nest in water and place it in a constant temperature water bath oscillator for oscillation to obtain a bird's nest that has been initially soaked; S2, placing the initially soaked bird's nest in an ultrasonic oscillator, adding okra polysaccharide, and continuing to soak to obtain a fully soaked bird's nest; S3, filtering, washing and draining the fully soaked bird's nest; S4. The drained bird's nest is sequentially subjected to air flow separation, low-pressure washing and centrifuge dehydration to obtain bird's nest silk.
2. The method for reducing bird's nest fiber breakage during foaming of bird's nest according to claim 1, characterized in that: In step S1, the mass ratio of dry bird's nest to water is 1:(20-80).
3. The method for reducing bird's nest fiber breakage during foaming of bird's nest according to claim 1, characterized in that: In step S1, during the oscillation treatment, the temperature of the constant temperature water bath is controlled to be 20-30°C, the oscillation frequency of the oscillator is controlled to be 100-200 rpm / min, and the oscillation time is controlled to be 1-3h.
4. The method for reducing bird's nest fiber breakage during foaming of bird's nest according to claim 1, characterized in that: In step S2, the power of the ultrasonic oscillator is 300-500W, and the ultrasonic time is 30min-1h.
5. The method for reducing bird's nest fiber breakage during foaming of bird's nest according to claim 1, characterized in that: In step S2, the amount of okra polysaccharide added is 1%-3% of the mass of the dry bird's nest.
6. The method for reducing bird's nest fiber breakage during foaming of bird's nest according to claim 1, characterized in that: In step S3, the fully soaked bird's nest is placed in a colander and shaken in water to filter out fine hairs and impurities, then rinsed with clean water and drained.
7. The method for reducing bird's nest fiber breakage during foaming of bird's nest according to claim 1, characterized in that: In step S4, during the air flow separation, the drained bird's nest is placed in the air flow channel, and the air flow pressure is controlled to be 0.1-5MPa and the air flow rate is controlled to be 5-20m / s.
8. The method for reducing bird's nest fiber breakage during foaming of bird's nest according to claim 1, characterized in that: In step S4, during the low-pressure flushing, the water pressure is controlled to be 2-2.3 kg and the flushing time is 5-10 minutes.
9. The method for reducing bird's nest fiber breakage during foaming of bird's nest according to claim 1, characterized in that: In step S4, during the dehydration, the rotation speed of the centrifuge is 1000-1500 rpm / min, and the time is 2-5 min.
10. The method for reducing bird's nest fiber breakage during foaming of bird's nest according to claim 1, characterized in that: The forms of the bird's nest include any one or more of bird's nest pieces, bird's nest strips, bird's nest corners, bird's nest pieces and bird's nest cakes.