Konjac-based composite essence slow-release incense paste and preparation method thereof

Abstract

The invention is suitable for the technical field of incense paste, and provides konjac-based composite essence slow-release incense paste and a preparation method thereof.The preparation method comprises the following steps that S1, 30-85 parts by weight of konjac flour, 10-50 parts by weight of modified starch and 1-8 parts by weight of edible gum are mixed, 322-810 parts by weight of pure water are added, and stirring is conducted at the temperature of 80-110 DEG C to form gel with the viscosity of 3000-6000 mPa.s; then adding 5-20 parts by weight of aqueous alkali, stirring for 20-70 seconds at the temperature of 80-120 DEG C, standing, cooling and forming, centrifugally dewatering, drying in vacuum at low temperature, and crushing for 3-10 mm to obtain a konjac matrix; s2, beta-cyclodextrin and natural plant absolute oil are mixed according to the mass ratio of 1: (6-9), the total weight of the beta-cyclodextrin and the natural plant absolute oil is 20-40 parts, and clathration is conducted for 0.5-2 h at the temperature of 18-40 DEG C; s3, adding essence into the mixture obtained in the step S2, and mixing to obtain an essence compound; and S4, adding the essence compound into the konjak matrix, adsorbing and filtering until no liquid flows out, thereby obtaining the konjak-based compound essence slow-release incense paste. According to the scheme, the incense paste has better slow release property and stability, the essence compatibility is good, and the loading capacity is high.

Description

Technical Field

[0001] This invention relates to the field of aromatherapy paste technology, specifically to a konjac-based compound fragrance sustained-release aromatherapy paste and its preparation method. Background Technology

[0002] Incense balm is a solid product used for burning incense, typically composed of a blend of natural fragrances, plant essential oils, and waxes. Unlike traditional incense burners or diffusers, it doesn't usually require burning; instead, it releases its aroma by heating or placing it over a heat source. Incense balm is used in various settings, including homes, offices, and meditation spaces, and is a popular product for relaxation and enhancing the ambiance.

[0003] Traditional incense balms have three major drawbacks:

[0004] 1. Poor fragrance compatibility: A single matrix is ​​difficult to simultaneously support natural absolutes and synthetic fragrances with large polarity differences, leading to layering or volatility imbalance;

[0005] 2. Insufficient high-temperature stability: Prolonged heating of β-cyclodextrin above 80℃ may cause relaxation of the cavity structure and a decrease in inclusion rate;

[0006] 3. Weak patent coverage: Existing technologies mostly focus on single fragrance types and lack protection for synthetic / natural fragrance combination systems.

[0007] In view of the technical defects of existing incense pastes, this application proposes a konjac-based compound fragrance sustained-release incense paste and its preparation method. Summary of the Invention

[0008] The purpose of this invention is to provide a konjac-based compound fragrance sustained-release incense paste and its preparation method, so as to solve the problems in the background art mentioned above.

[0009] To achieve the above objectives, the present invention provides the following technical solution: The first aspect of the present invention provides a method for preparing a konjac-based compound fragrance sustained-release incense paste, comprising the following steps:

[0010] S1. Mix 30-85 parts by weight of konjac powder, 10-50 parts by weight of modified starch and 1-8 parts by weight of edible gum, and add 322-810 parts by weight of pure water. Stir at 80-110℃ to form a gel with a viscosity of 3000-6000 mPa·s.

[0011] Then add 5-20 parts by weight of alkaline aqueous solution, stir at 80-120℃ for 20-70s, let stand to cool and solidify, centrifuge to dehydrate, dry under low temperature vacuum and crush 3-10mm to obtain konjac matrix.

[0012] S2, mix β-cyclodextrin with natural plant essential oil at a mass ratio of 1:6-9, with a total weight of 20-40 parts, and incorporate at 18-40℃ for 0.5-2 hours;

[0013] S3, add fragrance to S2 and mix, the mass ratio of natural plant essential oil to fragrance is (0.1-1):(1-10), to obtain fragrance complex;

[0014] S4. The fragrance complex is added to the konjac matrix for adsorption and filtration until no liquid flows out, thus obtaining the konjac-based complex fragrance slow-release incense paste.

[0015] Preferably, the alkaline aqueous solution of S1 is a solution formed by mixing one or more of sodium carbonate, calcium carbonate, and sodium bicarbonate with pure water, and its specification is 0.1-15% (wt).

[0016] Preferably, in step S1, the centrifugal dehydration is performed by centrifuging a solid-liquid centrifuge at a speed of 2000-3500 rpm for 25-60 minutes.

[0017] The low-temperature vacuum drying in S1 involves adding the obtained solid material into a vacuum drying device and drying it at a temperature of 18-40℃ and a vacuum degree of 0.2-0.002MPa until the resulting konjac matrix has a water content of ≤11% by weight.

[0018] Preferably, the konjac powder includes, but is not limited to, one or more of ordinary konjac powder, ordinary konjac refined powder, ordinary konjac micro powder, purified konjac powder, purified konjac refined powder, and purified konjac micro powder, with a particle size of 50-200 mesh; the edible gum includes, but is not limited to, one or more of xanthan gum, konjac gum, and gellan gum; the modified starch includes, but is not limited to, one or more of hydroxymethyl starch, hydroxypropyl starch, oxidized starch, pregelatinized starch, pregelatinized starch, and acetylated starch.

[0019] Preferably, the natural plant essential oils include, but are not limited to, one or more of the following: lavender absolute, cedarwood absolute, sage absolute, rose absolute, and bergamot oil; and the fragrances are one or more of the following: blended fragrances and single fragrances.

[0020] Preferably, the blended flavorings include, but are not limited to, one or more of floral flavorings, fruit flavorings, dairy flavorings, tobacco flavorings, nut flavorings, coffee flavorings, and tea flavorings; the monomeric flavorings include, but are not limited to, one or more of limonene, menthol, eugenol, sweet orange aldehyde, nocaketone, anethole, cinnamaldehyde, and eugenol acetate.

[0021] Preferably, a stabilizer is also added to step S4, wherein the stabilizer is present in 1.5-15 parts by weight.

[0022] Preferably, the stabilizer includes, but is not limited to, citric acid and nano silica, wherein the mass ratio of citric acid to nano silica is (1-2):(3-5).

[0023] Preferably, step S2 can obtain a high-temperature stable incense paste through an optimized preparation method, and the specific steps are as follows:

[0024] ① Add thermal crosslinking agent:

[0025] By adding 1-5 parts by weight of chitosan and 0.5-2 parts by weight of glutaraldehyde, chitosan is cross-linked by glutaraldehyde, forming a cross-linked protective layer on the surface of β-cyclodextrin.

[0026] ② Segmented temperature control:

[0027] After encapsulation, drying is carried out; encapsulation stage 40℃ → drying stage 30℃.

[0028] The second aspect of the present invention provides a konjac-based compound fragrance sustained-release incense paste, wherein the konjac-based compound fragrance sustained-release incense paste is prepared by the method described in the first aspect of the present invention.

[0029] The present invention has at least the following beneficial effects:

[0030] This invention provides a konjac-based compound fragrance sustained-release incense paste and its preparation method. By combining the compound fragrance system with thermal stability enhancement, the resulting incense paste has better sustained-release properties and stability, good fragrance compatibility, and high loading capacity compared with existing products. Detailed Implementation

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention obtains a basic formula for a konjac-based compound fragrance sustained-release incense paste by designing a compound fragrance system, and obtains a high-temperature stable formula based on the basic formula through a thermal stability enhancement process.

[0033] Basic recipe:

[0034] Example 1

[0035] This embodiment provides a method for preparing a konjac-based compound fragrance sustained-release incense paste, including the following steps:

[0036] S1, mix 30 parts by weight of konjac powder, 10 parts by weight of modified starch and 1 part by weight of edible gum, add 322 parts by weight of pure water, and stir at 80°C to form a gel with a viscosity of 3000-6000 mPa·s.

[0037] Then add 5 parts by weight of alkaline aqueous solution, stir at 80℃ for 70s, let stand to cool and solidify, centrifuge to dehydrate, dry under low temperature vacuum and crush to 3mm to obtain konjac matrix.

[0038] S2, β-cyclodextrin and natural vegetable oil are mixed at a mass ratio of 1:6, with a total weight of 20 parts, and incorporated at 18°C ​​for 2 hours;

[0039] S3, add fragrance to S2 and mix, the mass ratio of natural plant essential oil to fragrance is 0.1:10, to obtain fragrance complex;

[0040] S4. The fragrance complex is added to the konjac matrix for adsorption and filtration until no liquid flows out, thus obtaining the konjac-based complex fragrance slow-release incense paste.

[0041] Among them, the alkaline aqueous solution of S1 is a sodium carbonate solution with a specification of 0.1% (wt).

[0042] In S1, centrifugal dehydration is carried out by centrifuging solid-liquid separation equipment at a speed of 2000 rpm for 60 minutes.

[0043] S1 low-temperature vacuum drying involves adding the obtained solid material into a vacuum drying device and drying it at a temperature of 18°C ​​and a vacuum degree of 0.2 MPa until the resulting konjac matrix has a water content of 11% by weight.

[0044] Among them, the konjac flour is ordinary konjac flour with a particle size of 50-200 mesh; the edible gum is konjac gum; and the modified starch is pregelatinized starch.

[0045] Among them, the natural plant essential oil is lavender absolute oil; the fragrance is a single fragrance; the single fragrance includes anethole, cinnamaldehyde and eugenol acetate, and the mass ratio of anethole, cinnamaldehyde and eugenol acetate is 9:4:2.5.

[0046] Example 2

[0047] This embodiment provides a method for preparing a konjac-based compound fragrance sustained-release incense paste, including the following steps:

[0048] S1, mix 60 parts by weight of konjac powder, 35 parts by weight of modified starch and 5 parts by weight of edible gum, add 500 parts by weight of pure water, and stir at 100°C to form a gel with a viscosity of 3000-6000 mPa·s.

[0049] Then add 12 parts by weight of alkaline aqueous solution, stir at 100℃ for 40s, let stand to cool and solidify, centrifuge to dehydrate, dry under low temperature vacuum and crush to 6mm to obtain konjac matrix.

[0050] S2, β-cyclodextrin and natural vegetable oil are mixed at a mass ratio of 1:8, with a total weight of 30 parts, and incorporated at 40℃ for 0.5h;

[0051] S3, add fragrance to S2 and mix, the mass ratio of natural plant essential oil to fragrance is 0.8:1.5, to obtain fragrance complex;

[0052] S4. The fragrance complex is added to the konjac matrix for adsorption and filtration until no liquid flows out, thus obtaining the konjac-based complex fragrance slow-release incense paste.

[0053] Among them, the alkaline aqueous solution of S1 is a calcium carbonate solution with a specification of 10% (wt).

[0054] In S1, centrifugal dehydration involves centrifuging a solid-liquid centrifuge at a speed of 2000-3500 rpm for 40 minutes.

[0055] S1 low-temperature vacuum drying involves adding the obtained solid material into a vacuum drying device and drying it at a temperature of 30°C and a vacuum degree of 0.05 MPa until the resulting konjac matrix contains 8% water by weight.

[0056] Among them, the konjac flour is ordinary konjac flour with a particle size of 50-200 mesh; the edible gum is xanthan gum; and the modified starch is hydroxypropyl starch.

[0057] The natural plant essential oil is cedarwood essential oil; the fragrance is a monomeric fragrance, including limonene, menthol, and eugenol, with a content ratio of 15:4:3.7.

[0058] Example 3

[0059] This embodiment provides a method for preparing a konjac-based compound fragrance sustained-release incense paste, including the following steps:

[0060] S1, mix 85 parts by weight of konjac powder, 50 parts by weight of modified starch and 8 parts by weight of edible gum, add 810 parts by weight of pure water, and stir at 110°C to form a gel with a viscosity of 3000-6000 mPa·s.

[0061] Then add 20 parts by weight of alkaline aqueous solution, stir at 120℃ for 20s, let stand to cool and solidify, centrifuge to dehydrate, dry under low temperature vacuum and crush to 10mm to obtain konjac matrix.

[0062] S2, β-cyclodextrin and natural vegetable oil are mixed at a mass ratio of 1:9, with a total weight of 40 parts, and incorporated at 40°C for 2 hours;

[0063] S3, add fragrance to S2 and mix, the mass ratio of natural plant essential oil to fragrance is 1:1, to obtain fragrance complex;

[0064] S4. The fragrance complex is added to the konjac matrix for adsorption and filtration until no liquid flows out, thus obtaining the konjac-based complex fragrance slow-release incense paste.

[0065] In S1, centrifugal dehydration involves centrifuging a solid-liquid centrifuge at a speed of 2000-3500 rpm for 60 minutes.

[0066] S1 low-temperature vacuum drying involves adding the obtained solid material into a vacuum drying device and drying it at a temperature of 40°C and a vacuum degree of 0.002 MPa until the resulting konjac matrix contains 5% water by weight.

[0067] Among them, the konjac powder is ordinary konjac micro powder with a particle size of 50-200 mesh; the edible gum is gellan gum; and the modified starch is acetylated starch.

[0068] Among them, the natural plant essential oil is sage absolute oil; the fragrance types are two categories: blended fragrance and single fragrance, including coffee fragrance, tea fragrance, anethole and eugenol acetate, with a weight ratio of coffee fragrance, tea fragrance, anethole and eugenol acetate of 13:2:6:1.7.

[0069] In this embodiment, natural absolute oil provides the basic aroma, while blended fragrances and monomeric fragrances enhance the aroma characteristics and intensity. Eugenol acetate can also be used as a functional fragrance, mainly for its antibacterial effect and to extend the protection period.

[0070] Example 4

[0071] This embodiment provides a method for preparing a slow-release incense paste with konjac-based compound fragrance, which is the same as in Embodiment 1, except that the konjac powder is purified konjac powder, the modified starch is hydroxymethyl starch, and the natural plant essential oil is rose absolute oil.

[0072] The flavorings are blended flavorings, including floral flavorings, fruit flavorings and dairy flavorings, with a weight ratio of 7:3:2.6.

[0073] Example 5

[0074] This embodiment provides a method for preparing a slow-release incense paste with konjac-based compound fragrance, which is the same as in embodiment 2, except that the konjac powder is purified konjac powder, the modified starch is oxidized starch, and the natural plant essential oil is bergamot oil.

[0075] The flavorings are blended flavorings, including tobacco flavoring and nut flavoring, with a weight ratio of 9:16 between the two.

[0076] Example 6

[0077] This embodiment provides a method for preparing a slow-release incense paste with konjac-based compound fragrance, which is the same as in embodiment 3, except that the konjac powder is purified konjac micro powder and the modified starch is pregelatinized starch.

[0078] The fragrance is a monomeric fragrance, including sweet orange aldehyde and nocaketone, with a weight ratio of sweet orange aldehyde to nocaketone of 5:7.2.

[0079] Example 7

[0080] This embodiment provides a method for preparing a slow-release incense paste based on konjac fragrance, which is the same as in embodiment 1, except that 1.5 parts by weight of a stabilizer are added in step S4. The stabilizer includes citric acid and nano silica, and the mass ratio of citric acid to nano silica is 1:3.

[0081] Example 8

[0082] This embodiment provides a method for preparing a slow-release incense paste based on konjac fragrance, which is the same as in embodiment 2, except that a stabilizer of 5 parts by weight is added in step S4. The stabilizer includes citric acid and nano silica, and the mass ratio of citric acid to nano silica is 1.5:4.

[0083] Example 9

[0084] This embodiment provides a method for preparing a slow-release incense paste with konjac-based compound fragrance, which is the same as in embodiment 3, except that 15 parts by weight of a stabilizer are added in step S4. The stabilizer includes citric acid and nano silica, and the mass ratio of citric acid to nano silica is 2:5.

[0085] High-temperature stable formula:

[0086] Example 10

[0087] This embodiment provides a method for preparing a konjac-based compound fragrance sustained-release incense paste, which is the same as in Embodiment 7, except that...

[0088] A high-temperature stable incense paste can be obtained by optimizing the preparation method. The specific steps are as follows:

[0089] ① Add thermal crosslinking agent:

[0090] By adding 3 parts by weight of chitosan and 1 part by weight of glutaraldehyde, the chitosan is cross-linked by glutaraldehyde, forming a cross-linked protective layer on the surface of β-cyclodextrin.

[0091] ② Segmented temperature control:

[0092] After encapsulation, drying is carried out; encapsulation stage 40℃ → drying stage 30℃.

[0093] Example 11

[0094] This embodiment provides a method for preparing a konjac-based compound fragrance sustained-release incense paste, which is the same as in Embodiment 8, except that...

[0095] A high-temperature stable incense paste can be obtained by optimizing the preparation method. The specific steps are as follows:

[0096] ① Add thermal crosslinking agent:

[0097] By adding 1 part by weight of chitosan and 0.5 parts by weight of glutaraldehyde, the chitosan is cross-linked by glutaraldehyde, forming a cross-linked protective layer on the surface of β-cyclodextrin;

[0098] ② Segmented temperature control:

[0099] After encapsulation, drying is carried out; encapsulation stage 40℃ → drying stage 30℃.

[0100] The performance of the product obtained in this embodiment was verified by comparing it with that of unmodified β-cyclodextrin (β-CD). The results are shown in Table 1 below:

[0101] Table 1

[0102] condition Unmodified β-CD Thermal crosslinking β-CD 150℃ / 24h weight retention rate 68％ 92％ Aroma release time 120h 240h

[0103] In summary, the aromatherapy paste treated with thermal cross-linking exhibits better sustained-release properties.

[0104] Example 12

[0105] This embodiment provides a method for preparing a konjac-based compound fragrance sustained-release incense paste, which is the same as in Embodiment 9, except that...

[0106] A high-temperature stable incense paste can be obtained by optimizing the preparation method. The specific steps are as follows:

[0107] ① Add thermal crosslinking agent:

[0108] By adding 5 parts by weight of chitosan and 2 parts by weight of glutaraldehyde, chitosan is cross-linked by glutaraldehyde, forming a cross-linked protective layer on the surface of β-cyclodextrin.

[0109] ② Segmented temperature control:

[0110] After encapsulation, drying is carried out; encapsulation stage 40℃ → drying stage 30℃.

[0111] The product obtained in Example 11 above was compared with a traditional paraffin-based incense paste, and the results are shown in Table 2 below:

[0112] Table 2

[0113] index Traditional paraffin-based This invention Improvement effect Fragrance loading ≤25％ 45-60％ Increase by 80% Weight loss rate at 80℃ for 72 hours 15％ ＜3％ 80% decrease Fragrance compatibility Single fragrance Five types of fragrance complex Enhanced patent coverage Decomposition rate at 200℃ β-CD disintegration β-CD retention rate > 90% Breakthrough in high temperature stability

[0114] In summary, the incense paste prepared by this invention has better sustained-release properties and stability, good fragrance compatibility, and high loading capacity.

[0115] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0116] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a konjac-based compound fragrance sustained-release incense paste, characterized in that, Includes the following steps: S1. Mix 30-85 parts by weight of konjac powder, 10-50 parts by weight of modified starch and 1-8 parts by weight of edible gum, and add 322-810 parts by weight of pure water. Stir at 80-110℃ to form a gel with a viscosity of 3000-6000 mPa·s. Then add 5-20 parts by weight of alkaline aqueous solution, stir at 80-120℃ for 20-70s, let stand to cool and solidify, centrifuge to dehydrate, dry under low temperature vacuum and crush 3-10mm to obtain konjac matrix. S2, mix β-cyclodextrin with natural plant essential oil at a mass ratio of 1:6-9, with a total weight of 20-40 parts, and incorporate at 18-40℃ for 0.5-2 hours; S3, add fragrance to S2 and mix, the mass ratio of natural plant essential oil to fragrance is (0.1-1):(1-10), to obtain fragrance complex; S4. The fragrance complex is added to the konjac matrix for adsorption and filtration until no liquid flows out, thus obtaining the konjac-based complex fragrance slow-release incense paste.

2. The preparation method of the konjac-based compound fragrance sustained-release incense paste according to claim 1, characterized in that, The alkaline aqueous solution of S1 is a solution formed by mixing one or more of sodium carbonate, calcium carbonate, and sodium bicarbonate with pure water, and its specification is 0.1-15% (wt).

3. The preparation method of the konjac-based compound fragrance sustained-release incense paste according to claim 1, characterized in that, In S1, centrifugal dehydration is performed by centrifuging solid-liquid separation equipment at a speed of 2000-3500 rpm for 25-60 minutes. The low-temperature vacuum drying in S1 involves adding the obtained solid material into a vacuum drying device and drying it at a temperature of 18-40℃ and a vacuum degree of 0.2-0.002MPa until the resulting konjac matrix has a water content of ≤11% by weight.

4. The preparation method of the konjac-based compound fragrance sustained-release incense paste according to claim 1, characterized in that, The konjac powder includes, but is not limited to, one or more of ordinary konjac powder, ordinary konjac refined powder, ordinary konjac micro powder, purified konjac powder, purified konjac refined powder, and purified konjac micro powder, with a particle size of 50-200 mesh; the edible gum includes, but is not limited to, one or more of xanthan gum, konjac gum, and gellan gum; the modified starch includes, but is not limited to, one or more of hydroxymethyl starch, hydroxypropyl starch, oxidized starch, pregelatinized starch, pregelatinized starch, and acetylated starch.

5. The preparation method of the konjac-based compound fragrance sustained-release incense paste according to claim 1, characterized in that, The natural plant essential oils include, but are not limited to, one or more of the following: lavender absolute, cedarwood absolute, sage absolute, rose absolute, and bergamot oil; the fragrances are one or more of the following: blended fragrances and single fragrances.

6. The preparation method of the konjac-based compound fragrance sustained-release incense paste according to claim 5, characterized in that, The blended flavorings include, but are not limited to, one or more of the following: floral flavorings, fruit flavorings, dairy flavorings, tobacco flavorings, nut flavorings, coffee flavorings, and tea flavorings; the monomeric flavorings include, but are not limited to, one or more of the following: limonene, menthol, eugenol, sweet orange aldehyde, nocaketone, anethole, cinnamaldehyde, and eugenol acetate.

7. The preparation method of the konjac-based compound fragrance sustained-release incense paste according to claim 1, characterized in that, A stabilizer is also added to S4, and the stabilizer is present in 1.5-15 parts by weight.

8. The method for preparing a konjac-based compound fragrance sustained-release incense paste according to claim 7, characterized in that, The stabilizer includes, but is not limited to, citric acid and nano silica, wherein the mass ratio of citric acid to nano silica is (1-2):(3-5).

9. The method for preparing a konjac-based compound fragrance sustained-release incense paste according to claim 1, characterized in that, The S2 can be prepared using an optimized method to obtain a high-temperature stable incense paste, the specific steps of which are as follows: ① Add thermal crosslinking agent: By adding 1-5 parts by weight of chitosan and 0.5-2 parts by weight of glutaraldehyde, chitosan is cross-linked by glutaraldehyde, forming a cross-linked protective layer on the surface of β-cyclodextrin. ② Segmented temperature control: After encapsulation, drying is carried out; encapsulation stage 40℃ → drying stage 30℃.

10. A konjac-based compound fragrance sustained-release incense paste, characterized in that, The konjac-based compound fragrance sustained-release incense paste is prepared by the method described in any one of claims 1-9.