A method for recycling and treating flavor and fragrance residues

Abstract

The present invention discloses a method for recycling and processing flavor and fragrance residues. The method extracts and processes the recovered flavor and fragrance residues to obtain a flavoring slurry and a deodorizing raw material. The flavoring slurry and shell powder are then wrapped with a water-absorbing polymer material using an embedding technique, locking most of the fragrance inside the cat litter, leaving only the deodorizing raw material on the outside of the litter to provide a certain amount of fragrance. After defecation, the excellent water absorption properties of the water-absorbing polymer material can lock moisture from urine or feces and form a clumping mass. The flavoring slurry on the inside of the cat litter then slowly releases fragrance, which, together with the deodorizing raw material on the outside, masks the odor and maintains the fragrance release effect for a long time. The present invention further processes the recovered flavor and fragrance residues into cat litter products, effectively solving the problem of flavor and fragrance residue resource waste.

Description

Technical Field

[0001] The invention relates to the technical field of spice residue utilization, and in particular to a method for recovering and treating essence and spice residue. Background Art

[0002] Flavors and fragrances are commonly used as additives in numerous products across industries, including cosmetics, tobacco, and food. Demand for these ingredients is enormous, and the volume of residues and waste generated after processing and extraction is also substantial. Currently, most flavor and fragrance residues are disposed of by incineration or landfill, which is both environmentally unfriendly and wasteful of resources.

[0003] In addition, cat litter products currently on the market with deodorizing effects usually achieve the purpose of deodorizing by adding fragrant substances to cover up the odor. However, there is a deficiency in that the fragrance is released too quickly. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for recycling and treating flavor and fragrance residues. By extracting and treating the recovered flavor and fragrance residues, a flavoring slurry and a deodorizing raw material are obtained, and an embedding technology is used to prepare a cat litter product with a slow release of fragrance, thereby solving the problem of waste of flavor and fragrance residue resources in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a method for recovering and treating flavor and fragrance residues, comprising the following steps:

[0007] S1. Grind the spice residue and pass it through a 50-100 mesh sieve to obtain a first powder;

[0008] S2, extracting the first powder with ethanol for 2 to 4 hours, with a solid-liquid ratio of 1:4 to 6, and a water bath extraction temperature of 50 to 80° C., standing for 15 to 20 minutes after extraction, and then filtering to obtain a filtrate and a filter residue;

[0009] S3, the filtrate is concentrated under low temperature and reduced pressure under vacuum conditions of 80-100 mbar, with a water bath temperature of 50-60° C. to obtain a flavored slurry for later use;

[0010] S4, drying the filter residue at 80-90°C, grinding it to obtain a 50-100 mesh deodorizing raw material for later use;

[0011] S5, adding the flavoring slurry, shell powder, β-cyclodextrin, gelatin, and chitosan into an ultrasonic mixer for ultrasonic mixing, and then granulating with a granulator to obtain core layer particles;

[0012] S6. preparing a water-absorbing material slurry with a water-absorbing polymer resin, a deodorizing raw material and water;

[0013] S7. Use coating equipment to wrap the water-absorbing material slurry on the surface of the core layer particles, and dry it at 80-90° C. to obtain a cat litter product with embedded slow-release fragrance.

[0014] Furthermore, in step S1, the spice residues are scraps and recycled spices generated during spice production. These scraps and residues still have certain aromatic components and can provide a fragrance. For example, the spice residues are herbal spices such as vanilla, angelica, and licorice, or woody spices such as black plum and clove.

[0015] Furthermore, in step S2, the mass concentration of ethanol used for heat extraction is 70% to 80%.

[0016] Furthermore, in step S2, filtration is performed using a 400-mesh filter cloth.

[0017] Furthermore, in step S5, shell powder is made by washing, drying, and grinding recycled shells into a powder of 50-100 mesh. By recycling the shells, the shell powder formed can be used as the main material of the core layer particles, which effectively solves the problem of shell resource utilization.

[0018] Furthermore, in step S5, the particle size of the core layer particles is 2 to 4 mm; and in step S7, the particle size of the cat litter is 3 to 6 mm.

[0019] Furthermore, in step S5, the weight ratio of the flavoring slurry, shell powder, β-cyclodextrin, gelatin and chitosan is 15-25:40-50:3-8:3-8:3-8.

[0020] Preferably, in step S5, the conditions for ultrasonic mixing treatment are: ultrasonic power of 300-400 W, mixing temperature of 30-40° C., and mixing time of 30-60 min.

[0021] Preferably, in step S6, the water-absorbing polymer resin is a polyvinyl alcohol-based water-absorbing resin and / or a cellulose-based water-absorbing resin.

[0022] Preferably, in step S6, the mass ratio of the water-absorbing polymer resin to the deodorizing raw material is 3:1, and the total weight of the water-absorbing polymer resin and the deodorizing raw material accounts for 20-30% of the weight of the core layer particles.

[0023] Compared with the prior art, the present invention provides a method for recycling and treating flavor and fragrance residues, which has the following beneficial effects:

[0024] The present invention extracts and processes recovered flavor and fragrance residues to obtain a fragrance slurry and a deodorizing raw material. Using an embedding technique, the fragrance slurry and shell powder are wrapped with a water-absorbing polymer material, locking most of the fragrance inside the cat litter, leaving only the deodorizing raw material on the outside of the litter to provide a certain amount of fragrance. After defecation, the excellent water absorption properties of the water-absorbing polymer material can lock in moisture from urine or feces, causing them to agglomerate. At this time, the fragrance slurry inside the cat litter slowly releases fragrance, which, together with the deodorizing raw material on the outside, masks the odor and maintains the fragrance release effect for a long time. By reprocessing the recovered flavor and fragrance residues into cat litter products, the present invention effectively solves the problem of flavor and fragrance residue resource waste. DETAILED DESCRIPTION

[0025] The technical solutions of the present invention are described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0026] The present invention is described in further detail below through detailed examples.

[0027] Example 1

[0028] This embodiment provides a method for recycling and treating flavor and fragrance residues, comprising the following steps:

[0029] S1. Grind the spice residue and pass it through a 100-mesh sieve to obtain a first powder;

[0030] S2, the first powder was extracted with 75% ethanol by mass concentration for 3 hours, the solid-liquid ratio was 1:5, the water bath extraction temperature was 70 ° C, and the extraction was allowed to stand for 20 minutes, and then filtered with a 400 mesh filter cloth to obtain a filtrate and a filter residue;

[0031] S3, the filtrate is concentrated under low temperature and reduced pressure at a vacuum degree of 90 mbar, with a water bath temperature of 60° C. to obtain a flavored slurry for standby use;

[0032] S4, drying the filter residue at 85°C, grinding it to obtain a 100-mesh deodorizing raw material for later use;

[0033] S5, adding 20 parts of the flavoring slurry, 45 parts of shell powder, 5 parts of β-cyclodextrin, 5 parts of gelatin, and 5 parts of chitosan into an ultrasonic mixer and ultrasonically mixing them for 50 minutes at an ultrasonic power of 350 W and a mixing temperature of 35° C., and then granulating them with a granulator to obtain core layer particles with a particle size of 2 to 4 mm;

[0034] S6. Prepare a water-absorbing material slurry by mixing 15 parts of a water-absorbing polymer resin and 5 parts of a deodorizing raw material with water; wherein the water-absorbing polymer resin is polyvinyl alcohol (PVA), and the total weight of the water-absorbing polymer resin and the deodorizing raw material accounts for 25% of the weight of the core layer particles;

[0035] S7. Use coating equipment to wrap the water-absorbing material slurry on the surface of the core layer particles, and dry it at 85° C. to obtain a cat litter product with embedded slow-release fragrance and a particle size of 3 to 6 mm.

[0036] Example 2

[0037] This embodiment provides a method for recycling and treating flavor and fragrance residues, comprising the following steps:

[0038] S1. Grind the spice residue and pass it through a 100-mesh sieve to obtain a first powder;

[0039] S2. The first powder was extracted with 75% ethanol by mass for 4 hours at a solid-liquid ratio of 1:6 and a water bath extraction temperature of 60°C. The mixture was allowed to stand for 20 minutes after extraction and then filtered through a 400-mesh filter cloth to obtain a filtrate and a filter residue.

[0040] S3, the filtrate is concentrated under low temperature and reduced pressure at a vacuum degree of 90 mbar, with a water bath temperature of 60° C. to obtain a flavored slurry for standby use;

[0041] S4, drying the filter residue at 85°C, grinding it to obtain a 100-mesh deodorizing raw material for later use;

[0042] S5, adding 15 parts of the flavoring slurry, 50 parts of shell powder, 5 parts of β-cyclodextrin, 5 parts of gelatin, and 5 parts of chitosan into an ultrasonic mixer and ultrasonically mixing them for 30 minutes at an ultrasonic power of 300 W and a mixing temperature of 40° C., and then granulating them with a granulator to obtain core layer particles with a particle size of 2 to 4 mm;

[0043] S6. Prepare a water-absorbing material slurry by mixing 15 parts of a water-absorbing polymer resin and 5 parts of a deodorizing raw material with water; wherein the water-absorbing polymer resin is polyvinyl alcohol (PVA), and the total weight of the water-absorbing polymer resin and the deodorizing raw material accounts for 25% of the weight of the core layer particles;

[0044] S7. Use coating equipment to wrap the water-absorbing material slurry on the surface of the core layer particles, and dry it at 85° C. to obtain a cat litter product with embedded slow-release fragrance and a particle size of 3 to 6 mm.

[0045] Example 3

[0046] This embodiment provides a method for recycling and treating flavor and fragrance residues, comprising the following steps:

[0047] S1. Grind the spice residue and pass it through a 100-mesh sieve to obtain a first powder;

[0048] S2. The first powder was extracted with 75% ethanol by mass for 2 hours, with a solid-liquid ratio of 1:4 and a water bath extraction temperature of 80°C. After extraction, the mixture was allowed to stand for 20 minutes, and then filtered through a 400-mesh filter cloth to obtain a filtrate and a filter residue;

[0049] S3, the filtrate is concentrated under low temperature and reduced pressure at a vacuum degree of 90 mbar, with a water bath temperature of 60° C. to obtain a flavored slurry for standby use;

[0050] S4, drying the filter residue at 85°C, grinding it to obtain a 100-mesh deodorizing raw material for later use;

[0051] S5, adding 25 parts of the flavoring slurry, 40 parts of shell powder, 5 parts of β-cyclodextrin, 5 parts of gelatin, and 5 parts of chitosan into an ultrasonic mixer and ultrasonically mixing them for 60 minutes at an ultrasonic power of 400 W and a mixing temperature of 30° C., and then granulating them with a granulator to obtain core layer particles with a particle size of 2 to 4 mm;

[0052] S6. Prepare a water-absorbing material slurry by mixing 15 parts of a water-absorbing polymer resin and 5 parts of a deodorizing raw material with water; wherein the water-absorbing polymer resin is polyvinyl alcohol (PVA), and the total weight of the water-absorbing polymer resin and the deodorizing raw material accounts for 25% of the weight of the core layer particles;

[0053] S7. Use coating equipment to wrap the water-absorbing material slurry on the surface of the core layer particles, and dry it at 85° C. to obtain a cat litter product with embedded slow-release fragrance and a particle size of 3 to 6 mm.

[0054] Example 4

[0055] This embodiment provides a method for recycling and treating flavor and fragrance residues, comprising the following steps:

[0056] S1. Grind the spice residue and pass it through a 100-mesh sieve to obtain a first powder;

[0057] S2, the first powder was extracted with 75% ethanol by mass concentration for 3 hours, the solid-liquid ratio was 1:5, the water bath extraction temperature was 70 ° C, and the extraction was allowed to stand for 20 minutes, and then filtered with a 400 mesh filter cloth to obtain a filtrate and a filter residue;

[0058] S3, the filtrate is concentrated under low temperature and reduced pressure at a vacuum degree of 90 mbar, with a water bath temperature of 60° C. to obtain a flavored slurry for standby use;

[0059] S4, drying the filter residue at 85°C, grinding it to obtain a 100-mesh deodorizing raw material for later use;

[0060] S5, adding 20 parts of the flavoring slurry, 45 parts of shell powder, 5 parts of β-cyclodextrin, 5 parts of gelatin, and 5 parts of chitosan into an ultrasonic mixer and ultrasonically mixing them for 50 minutes at an ultrasonic power of 350 W and a mixing temperature of 35° C., and then granulating them with a granulator to obtain core layer particles with a particle size of 2 to 4 mm;

[0061] S6. Prepare a water-absorbing material slurry by mixing 12 parts of a water-absorbing polymer resin and 4 parts of a deodorizing raw material with water; wherein the water-absorbing polymer resin is polyvinyl alcohol (PVA), and the total weight of the water-absorbing polymer resin and the deodorizing raw material accounts for 20% of the weight of the core layer particles;

[0062] S7. Use coating equipment to wrap the water-absorbing material slurry on the surface of the core layer particles, and dry it at 85° C. to obtain a cat litter product with embedded slow-release fragrance and a particle size of 3 to 6 mm.

[0063] Example 5

[0064] This embodiment provides a method for recycling and treating flavor and fragrance residues, comprising the following steps:

[0065] S1. Grind the spice residue and pass it through a 100-mesh sieve to obtain a first powder;

[0066] S2, the first powder was extracted with 75% ethanol by mass concentration for 3 hours, the solid-liquid ratio was 1:5, the water bath extraction temperature was 70 ° C, and the extraction was allowed to stand for 20 minutes, and then filtered with a 400 mesh filter cloth to obtain a filtrate and a filter residue;

[0067] S3, the filtrate is concentrated under low temperature and reduced pressure at a vacuum degree of 90 mbar, with a water bath temperature of 60° C. to obtain a flavored slurry for standby use;

[0068] S4, drying the filter residue at 85°C, grinding it to obtain a 100-mesh deodorizing raw material for later use;

[0069] S5, adding 20 parts of the flavoring slurry, 45 parts of shell powder, 5 parts of β-cyclodextrin, 5 parts of gelatin, and 5 parts of chitosan into an ultrasonic mixer and ultrasonically mixing them for 50 minutes at an ultrasonic power of 350 W and a mixing temperature of 35° C., and then granulating them with a granulator to obtain core layer particles with a particle size of 2 to 4 mm;

[0070] S6. Prepare a water-absorbing material slurry by mixing 18 parts of a water-absorbing polymer resin and 6 parts of a deodorizing raw material with water; wherein the water-absorbing polymer resin is polyvinyl alcohol (PVA), and the total weight of the water-absorbing polymer resin and the deodorizing raw material accounts for 30% of the weight of the core layer particles;

[0071] S7. Use coating equipment to wrap the water-absorbing material slurry on the surface of the core layer particles, and dry it at 85° C. to obtain a cat litter product with embedded slow-release fragrance and a particle size of 3 to 6 mm.

[0072] Comparative Example 1

[0073] Compared with Example 1, this comparative example does not include the preparation of the flavoring slurry and the deodorizing raw material, and specifically includes the following steps:

[0074] S1, adding 45 parts of shell powder, 5 parts of β-cyclodextrin, 5 parts of gelatin, and 5 parts of chitosan into an ultrasonic mixer and ultrasonically mixing them for 50 minutes at an ultrasonic power of 350 W and a mixing temperature of 35° C., and then granulating them with a granulator to obtain core layer particles with a particle size of 2 to 4 mm;

[0075] S2, preparing 15 parts of a water-absorbing polymer resin with water to obtain a water-absorbing material slurry; wherein the water-absorbing polymer resin is polyvinyl alcohol (PVA), and the weight of the water-absorbing polymer resin accounts for 25% of the weight of the core layer particles;

[0076] S3. Using a coating device to coat the water-absorbing material slurry on the surface of the core layer particles, drying at 85° C. to obtain a cat litter product with a particle size of 3 to 6 mm.

[0077] Comparative Example 2

[0078] Compared with Example 1, this comparative example does not include the step of embedding with a water-absorbing polymer resin. Specifically, it includes the following steps:

[0079] S1. Grind the spice residue and pass it through a 100-mesh sieve to obtain a first powder;

[0080] S2, the first powder was extracted with 75% ethanol by mass concentration for 3 hours, the solid-liquid ratio was 1:5, the water bath extraction temperature was 70 ° C, and the extraction was allowed to stand for 20 minutes, and then filtered with a 400 mesh filter cloth to obtain a filtrate and a filter residue;

[0081] S3, the filtrate is concentrated under low temperature and reduced pressure at a vacuum degree of 90 mbar, with a water bath temperature of 60° C. to obtain a flavored slurry for standby use;

[0082] S4, drying the filter residue at 85°C, grinding it to obtain a 100-mesh deodorizing raw material for later use;

[0083] S5. Add 20 parts of flavoring slurry, 60 parts of shell powder, 5 parts of β-cyclodextrin, 5 parts of gelatin, 5 parts of chitosan, and 5 parts of deodorizing raw materials into an ultrasonic mixer and carry out ultrasonic mixing treatment for 50 minutes. The ultrasonic power is 350W and the mixing temperature is 35°C. Then, granulate with a granulator and dry at 85°C to obtain a cat litter product with a particle size of 2 to 4 mm.

[0084] Comparative Example 3

[0085] This comparative example uses commercially available pure tofu cat litter.

[0086] 20g of each of the cat litters of Examples 1 to 5 and Comparative Examples 1 to 3 were taken for water absorption testing, and the weight of the cat litters after water absorption was measured and the duration of the fragrance after water absorption was evaluated. The results are shown in Table 1 below.

[0087] Table 1 Cat litter water absorption test results

[0088]

[0089]

[0090] As shown in Table 1, the cat litters produced in Examples 1-5 have good water absorption and a longer-lasting fragrance, surpassing those in Comparative Examples 2 and 3. While the cat litter produced in Comparative Example 1 has good water absorption, it lacks a fragrance-enhancing effect and, in actual use, fails to mask odors. This indicates that the cat litter produced using the method for recovering and treating flavor and fragrance residues of the present invention exhibits excellent water absorption and sustained fragrance release.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0092] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for recycling and treating flavor and fragrance residues, characterized in that: The following steps are involved: S1. Grinding spice residue and passing it through a 50-100 mesh sieve to obtain a first powder; wherein the spice residue is scraps generated during spice production and recycled spices; S2, extracting the first powder with 70% to 80% ethanol by mass for 2 to 4 hours, with a solid-liquid ratio of 1:4 to 6, and a water bath extraction temperature of 50 to 80° C., allowing the mixture to stand for 15 to 20 minutes after extraction, and then filtering to obtain a filtrate and a filter residue; S3, the filtrate is concentrated under low temperature and reduced pressure under vacuum conditions of 80-100 mbar, with a water bath temperature of 50-60° C. to obtain a flavored slurry for later use; S4, drying the filter residue at 80-90°C, grinding it to obtain a 50-100 mesh deodorizing raw material for later use; S5. Add the flavoring slurry, shell powder, β-cyclodextrin, gelatin, and chitosan in a weight ratio of 15-25:40-50:3-8:3-8:3-8 into an ultrasonic mixer, perform ultrasonic mixing treatment for 30-60 min at an ultrasonic power of 300-400 W and a temperature of 30° C. to 40° C., and then granulate with a granulator to obtain core layer particles; wherein the shell powder is obtained by washing, drying, and grinding recycled shells into a powder of 50-100 mesh; S6. Prepare a water-absorbing material slurry using a water-absorbing polymer resin, a deodorizing raw material, and water; wherein the water-absorbing polymer resin is a polyvinyl alcohol-based water-absorbing resin and / or a cellulose-based water-absorbing resin; the mass ratio of the water-absorbing polymer resin to the deodorizing raw material is 3:1, and the total weight of the water-absorbing polymer resin and the deodorizing raw material accounts for 20-30% of the weight of the core layer particles; S7. Use coating equipment to wrap the water-absorbing material slurry on the surface of the core layer particles, and dry it at 80-90° C. to obtain a cat litter product with embedded slow-release fragrance.

2. The method for recovering and treating flavor and fragrance residues according to claim 1, wherein: In step S2, filtration is performed using a 400-mesh filter cloth.

3. The method for recovering and treating flavor and fragrance residues according to claim 1, wherein: In step S5, the particle size of the core layer particles is 2 to 4 mm; in step S7, the particle size of the cat litter is 3 to 6 mm.

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