CN113491346A - Filter stick particles containing epigallocatechin gallate and preparation method thereof - Google Patents

Filter stick particles containing epigallocatechin gallate and preparation method thereof Download PDF

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Publication number
CN113491346A
CN113491346A CN202010264867.3A CN202010264867A CN113491346A CN 113491346 A CN113491346 A CN 113491346A CN 202010264867 A CN202010264867 A CN 202010264867A CN 113491346 A CN113491346 A CN 113491346A
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parts
egcg
particles
filter stick
materials
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CN113491346B (en
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孙绍彬
代进鹏
陈飞
金晶
何勇
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Endian Science & Technology Development Of Yunnan Co ltd
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Endian Science & Technology Development Of Yunnan Co ltd
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    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06Use of materials for tobacco smoke filters
    • A24D3/061Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04Tobacco smoke filters characterised by their shape or structure
    • A24D3/048Tobacco smoke filters characterised by their shape or structure containing additives
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06Use of materials for tobacco smoke filters
    • A24D3/08Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06Use of materials for tobacco smoke filters
    • A24D3/14Use of materials for tobacco smoke filters of organic materials as additive

Abstract

The invention provides natural biological matrix filter stick particles and a preparation method and application thereof, belonging to the technical field of tobacco processing and comprising the following components in parts by mass: wherein the main materials comprise: 5-15 parts of smoke sweetener, 4-10 parts of smoke humectant, 2-5 parts of antioxidant bacteriostatic agent, 0-3 parts of particle film forming agent, 1-3 parts of smoke adsorbent and 0-3 parts of particle structure reinforcing agent; the auxiliary materials comprise: 0.005-0.01 part of stevioside, 0.02-0.05 part of sodium carboxymethylcellulose, 0.005-0.02 part of ethyl cellulose, 0-0.005 part of polyethylene glycol and 0.005 part of combined food-grade pigment; according to the invention, by coordinating and comprehensively optimizing the performance of the particle formula and considering factors such as smoke release, adsorption and aroma enhancement release, on the premise of ensuring that the particles have sufficient adsorption performance and reducing harmful substances, the filter stick particles with proper taste, smoke humidity, smoke temperature and aroma are provided, and meanwhile, the filter stick particles beneficial to processing are convenient to produce.

Description

Filter stick particles containing epigallocatechin gallate and preparation method thereof
Technical Field
The invention belongs to the technical field of tobacco processing, and particularly relates to filter stick particles containing epigallocatechin gallate and a preparation method thereof.
Background
Epigallocatechin gallate (EGCG), which is a functional component with the most content of catechin, has strong antioxidant activity and good effect when being applied to antibacterial, anti-aging and other treatments in the medical industry; EGCG is applied to products such as oxidation resistance, fresh keeping and the like in the food industry, and is used as a special functional additive in the daily chemical industry; the EGCG has a wide application prospect in the field of tobacco additives, can fully exert special effects of oxidation resistance, antibiosis and the like, and has more cases of applying tea extracts in the field of tobacco in actual production, but for EGCG, due to the special physicochemical properties of the EGCG, the EGCG is easily influenced by factors such as temperature, metal ions, enzyme, pH value and the like in the processing and storage processes and is easily subjected to chemical change, so that the original structure and biological activity of the EGCG are changed, the original efficacy of the EGCG is reduced, particularly, the EGCG gradually moves forward to auxiliary materials for cigarettes along with tobacco aroma enhancement and quality improvement, tobacco additives are required in the industry, particularly, the filter stick additives can retain and compensate the aroma and fragrance of cigarettes, and the EGCG also has active auxiliary effects of reducing free radicals in smoke, resisting bacteria and inhibiting bacteria and the like.
The filter stick particles of the cigarettes are used as important types of filter stick additives, the filter stick particles have outstanding effects on enhancing aroma and improving quality of smoke, particularly, some filter stick particles with porous structures have sufficient adsorption performance, can obviously reduce harmful substances in the smoke, and can coordinate and comprehensively optimize the taste, the smoke humidity, the smoke temperature and the aroma of the smoke. At present, a lot of filter stick particles are prepared by adopting natural plant components, a series of potential hazards in safety and sanitation aspects such as microorganism breeding are easy to occur, the basic effect of filter stick particle materials can be adversely affected by a common disinfection and sterilization means, and effective components with antibacterial and bacteriostatic effects are added into the filter stick particles, such as the EGCG, because the effects are very little due to inherent instability, the cigarette filter stick particles with good basic performance and certain oxidation resistance, antibacterial and bacteriostatic effects are provided, and the cigarette filter stick particles have a remarkable promoting effect on the aroma enhancement and quality improvement engineering of tobacco.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides filter stick particles containing epigallocatechin gallate and a preparation method of the particles.
In order to achieve the purpose, the invention adopts the following technical scheme: the filter stick particles containing epigallocatechin gallate are characterized in that EGCG microcapsules formed by encapsulating maltodextrin, Arabic gum and chitosan serving as wall materials are uniformly distributed in base materials of the particles, and meanwhile, coatings formed by EGCG monomers and pyrolysis type materials are arranged on the surfaces of the particles.
The filter stick particles containing epigallocatechin gallate comprise the following components in parts by weight:
A. 10-26 parts of sweetener, B, 10-20 parts of humectant, 0.1-0.3 part of C, EGCG monomer, D, 15-25 parts of porous starch,
E. 35-47 parts of microcrystalline cellulose; F. in addition, the composition also comprises 0.1-0.2 part of stevioside, 3-8 parts of citric acid, G and a binder: 3-8 parts of amylose, 0.2-1 part of sodium carboxymethylcellulose, 1-5 parts of ethyl cellulose, 10000.5-2 parts of polyethylene glycol, 20000.1-1.5 parts of polyethylene glycol, 0.1-0.5 part of maltodextrin, 0.02-0.1 part of Arabic gum and 0.2-0.7 part of chitosan.
Preferably, the sweetener comprises one or more of Poria powder, fructus Siraitiae Grosvenorii powder, Glycyrrhrizae radix powder, and radix Puerariae powder.
Preferably, the humectant comprises any one or a mixture of more than two of radix ophiopogonis powder and dark plum powder.
The preparation method of the filter stick particles containing epigallocatechin gallate is characterized by comprising the following steps:
first, preparing EGCG microcapsule
The preparation method comprises the following steps of (1) forming microcapsules by using maltodextrin, Arabic gum and chitosan as wall materials and EGCG monomers as core materials through spray drying technology; the method comprises the following specific steps:
firstly, taking an EGCG monomer as a core material, taking maltodextrin, Arabic gum and chitosan as wall materials, taking deionized water as a solvent, and mixing and dissolving the maltodextrin, the Arabic gum and the chitosan by using the deionized water to form an emulsion;
dispersing EGCG monomer and essence in the emulsion, wherein the ratio of core material to wall material is =1: 1-2.5;
homogenizing by a high-speed dispersion homogenizer, and then stirring at high speed to keep the whole suspension in a uniform state;
fourthly, the suspension is introduced into a conventional spray dryer for spray drying to prepare an EGCG microcapsule product;
the homogenizing pressure is 0.4 MPa; the spraying conditions are as follows: the air inlet temperature is 140-180 ℃, the air outlet temperature is 80-120 ℃, and the feeding speed is 1500-3000 ml/h.
Secondly, preparing the granules
Weighing other filter rod particle raw materials except the filter rod particle raw material obtained in the step one in proportion;
secondly, baking the natural sweetener and the humectant raw materials at the baking temperature of 70 ℃, the cycle time of 30s and the baking time of 8h until the water content is lower than 2-3 percent;
thirdly, putting the baked and cooled raw materials into an ultrafine grinder for grinding, adjusting air induction quantity and rotating speed of a grinding and grading motor according to process requirements of different materials, and then putting the ground raw materials into a hopper of a vibrating screen to pass through a 120-mesh sieve for screening;
mixing the weighed and uniformly mixed auxiliary materials and the raw materials by using a high-speed shearing granulator;
fifthly, adding 20-30 parts of 45% alcohol into the uniformly mixed material obtained in the step IV, and mixing through a high-speed shearing granulator;
sixthly, granulating the mixture obtained in the fifth step into long column-shaped granules by a wet granulator, and finishing the granules into short column-shaped granules or spherical granules to obtain the product; the average particle size of the obtained particles is 0.3-0.8 mm.
Seventhly, drying the granules obtained in the step (c) at normal temperature by using a fluidized bed.
Three, granule coating
Dissolving 1-5 parts of EGCG monomer and 1-5 parts of citric acid in 100-150 parts of 0.5% povidone K30 alcohol solution, and adding the EGCG solution on the surface of the particles obtained in the step (c) in a coating manner; the coating process comprises the following specific steps:
firstly, spraying coating on the bottom by using a bottom spraying fluidized bed;
② coating at low temperature or normal temperature, the temperature is not more than 50 ℃;
thirdly, the air inlet amount is preferably that the particles are in a boiling state;
fourthly, the liquid inlet amount is 0.5cm3~1.5cm3/s;
And fifthly, air-drying for 3-5min after coating.
The principle and the beneficial effects of the invention are as follows:
firstly, the microcapsule containing the EGCG monomer and the essence is prepared by the pyrolytic wall material, and is uniformly mixed with other granular materials to prepare granules, so that the EGCG substance can be sufficiently and stably released when the cigarette is smoked and heated, can be mixed in smoke gas, can remove some free radicals generated by the combustion of the tobacco to a certain extent, and can exert the original effect of the EGCG substance after a small amount of the EGCG substance enters a human body along with the smoke gas.
The EGCG monomer is also dissolved in an acidic stable environment and then is attached to the surface of the prepared and molded particles in a form of easy coating, and in the storage period from the preparation of the particles to the use of the particles, other raw materials of the particles can be effectively prevented from breeding bacteria and microorganisms, the antibacterial and bacteriostatic effects of the EGCG are fully utilized, the total number of bacterial colonies of the particles can be ensured not to exceed the standard, and the safety of the particles is ensured.
The invention is mainly compounded by plant raw materials, can effectively enrich the cigarette fragrance and improve the comfort of the cigarette during smoking, and the particles added into the cigarette filter stick tows can increase the sweet feeling and the fluid production feeling of the cigarette smoke, reduce the irritation of the cigarette smoke, enrich the cigarette fragrance and obviously improve the smoking quality of the cigarette.
The particles have a porous structure, and are more favorable for releasing aroma substances in raw materials while improving the adsorption performance.
Detailed Description
Selecting a plurality of groups of filter stick particle finished products with different proportions to compare antibacterial and bacteriostatic properties, detecting gas phase and free radicals of sample cigarettes according to a GB/T16447 plus 2004 national standard method, setting a comparison group as cigarettes of the same brand without adding the filter stick particles obtained in the invention, and setting a detection group as the filter stick particles obtained in the embodiments 1-3 added in the cigarettes of the comparison group respectively, wherein the detection results are detailed in Table 1.
The preparation methods used in the 3 examples are consistent and are all carried out according to the following procedures:
firstly, preparing EGCG microcapsules: the preparation method comprises the following steps of (1) forming microcapsules by using maltodextrin, Arabic gum and chitosan as wall materials and EGCG monomers as core materials through spray drying technology; the method comprises the following specific steps:
mixing and dissolving maltodextrin, Arabic gum and chitosan with deionized water to form an emulsion;
dispersing EGCG monomer and essence in the emulsion;
homogenizing by a high-speed dispersion homogenizer, and then stirring at high speed to keep the whole suspension in a uniform state;
fourthly, the suspension is introduced into a conventional spray dryer for spray drying to prepare an EGCG microcapsule product;
the homogenizing pressure is 0.4 MPa; the spraying conditions are as follows: the air inlet temperature is 140-180 ℃, the air outlet temperature is 80-120 ℃, and the feeding speed is 1500-3000 ml/h.
Secondly, preparing filter stick particles:
weighing other filter rod particle raw materials except the filter rod particle raw material obtained in the step one in proportion;
secondly, baking the natural sweetener and the humectant raw materials at the baking temperature of 70 ℃, the cycle time of 30s and the baking time of 8h until the water content is lower than 2-3 percent;
thirdly, putting the baked and cooled raw materials into an ultrafine grinder for grinding, adjusting air induction quantity and rotating speed of a grinding and grading motor according to process requirements of different materials, and then putting the ground raw materials into a hopper of a vibrating screen to pass through a 120-mesh sieve for screening;
mixing the weighed and uniformly mixed auxiliary materials and the raw materials by using a high-speed shearing granulator;
fifthly, adding 20-30 parts of 45% alcohol into the uniformly mixed material obtained in the step IV, and mixing through a high-speed shearing granulator;
sixthly, granulating the mixture obtained in the fifth step into long column-shaped granules by a wet granulator, and finishing the granules into short column-shaped granules or spherical granules to obtain the product; the average particle size of the obtained particles is 0.3-0.8 mm.
Seventhly, drying the granules obtained in the step (c) at normal temperature by using a fluidized bed.
Finally, granule coating is carried out:
dissolving a certain amount of EGCG monomer and citric acid in 0.5% povidone K30 alcohol solution, and adding the EGCG solution on the surface of the particles obtained in the step (c) in a coating manner; the coating process comprises the following specific steps:
firstly, spraying coating on the bottom by using a bottom spraying fluidized bed;
② coating at low temperature or normal temperature, the temperature is not more than 50 ℃;
thirdly, the air inlet amount is preferably that the particles are in a boiling state;
fourthly, the liquid inlet amount is 0.5cm 3-1.5 cm 3/s;
and fifthly, air-drying for 3-5min after coating.
Example 1
The filter stick particles comprise the following components: 20 parts of tuckahoe powder, 15 parts of dwarf lilyturf tuber powder, 0.2 part of EGCG monomer, 20 parts of porous starch, 40 parts of microcrystalline cellulose, and also 0.1 part of stevioside, 5 parts of citric acid, 5 parts of amylose, 0.5 part of sodium carboxymethylcellulose, 3 parts of ethyl cellulose, 1 part of polyethylene glycol 1000, 0.8 part of polyethylene glycol 2000, 0.3 part of maltodextrin, 0.06 part of Arabic gum and 0.4 part of chitosan.
Example 2
The filter stick particles comprise the following components: 10 parts of kudzu root powder, 10 parts of dark plum powder, 0.1 part of EGCG monomer, 15 parts of porous starch, 35 parts of microcrystalline cellulose, 0.1 part of stevioside, 3 parts of citric acid, 3 parts of amylose, 0.2 part of sodium carboxymethylcellulose, 1 part of ethyl cellulose, 0.5 part of polyethylene glycol 1000, 0.0.1 part of polyethylene glycol 2000, 0.1 part of maltodextrin, 0.02 part of Arabic gum and 0.2 part of chitosan.
Example 3
The filter stick particles comprise the following components: 26 parts of licorice powder, 20 parts of dwarf lilyturf tuber powder, 0.3 part of EGCG monomer, 25 parts of porous starch, 47 parts of microcrystalline cellulose, 0.2 part of stevioside, 8 parts of citric acid, 8 parts of amylose, 1 part of sodium carboxymethylcellulose, 5 parts of ethyl cellulose, 2 parts of polyethylene glycol 1000, 1.5 parts of polyethylene glycol 2000, 0.5 part of maltodextrin, 0.1 part of Arabic gum and 0.7 part of chitosan.
And (3) detection results of the antibacterial property of the particles are as follows: according to standard detection procedures, microorganism detection is carried out on the conventional filter stick particles and the filter stick particles prepared in the examples 1-3, and the filter stick particles prepared in the examples 1-3 have the advantages that the total number of escherichia coli and bacterial colonies in the filter stick particles is obviously increased, and the particle preparation technology using EGCG coating technology and microcapsule mixing technology has certain antibacterial and bacteriostatic effects.
TABLE 1
Detection results of free radicals
Figure DEST_PATH_IMAGE002
As can also be seen from table 1, the filter rod particles prepared by the EGCG coating technology and the microcapsule mixing particle preparation technology have a significantly increased efficiency of removing solid and gas phase free radicals during smoking compared to cigarettes prepared without particles and cigarettes prepared by using common particles.

Claims (5)

1. The filter stick particles containing epigallocatechin gallate are characterized in that EGCG microcapsules formed by encapsulating maltodextrin, Arabic gum and chitosan serving as wall materials are uniformly distributed in base materials of the particles, and meanwhile, coatings formed by EGCG monomers and pyrolysis type materials are arranged on the surfaces of the particles.
2. The filter stick particles containing epigallocatechin gallate according to claim 1, which are characterized by comprising the following components in parts by mass:
A. 10-26 parts of sweetener, B, 10-20 parts of humectant, 0.1-0.3 part of C, EGCG monomer, D, 15-25 parts of porous starch,
E. 35-47 parts of microcrystalline cellulose; F. in addition, the composition also comprises 0.1-0.2 part of stevioside, 3-8 parts of citric acid, G and a binder: 3-8 parts of amylose, 0.2-1 part of sodium carboxymethylcellulose, 1-5 parts of ethyl cellulose, 10000.5-2 parts of polyethylene glycol, 20000.1-1.5 parts of polyethylene glycol, 0.1-0.5 part of maltodextrin, 0.02-0.1 part of Arabic gum and 0.2-0.7 part of chitosan.
3. The filter stick particle containing epigallocatechin gallate according to claim 2, wherein the sweetener comprises any one or a mixture of two or more of tuckahoe powder, momordica grosvenori powder, licorice powder and pueraria lobata powder.
4. The filter stick particle containing epigallocatechin gallate according to claim 2, wherein the humectant comprises any one or a mixture of more than two of radix ophiopogonis powder and dark plum powder.
5. A preparation method of filter stick particles containing epigallocatechin gallate is characterized by comprising the following steps:
first, preparing EGCG microcapsule
The preparation method comprises the following steps of (1) forming microcapsules by using maltodextrin, Arabic gum and chitosan as wall materials and EGCG monomers as core materials through spray drying technology; the method comprises the following specific steps:
firstly, taking an EGCG monomer as a core material, taking maltodextrin, Arabic gum and chitosan as wall materials, taking deionized water as a solvent, and mixing and dissolving the maltodextrin, the Arabic gum and the chitosan by using the deionized water to form an emulsion;
dispersing EGCG monomer and essence in the emulsion, wherein the ratio of core material to wall material is =1: 1-2.5;
homogenizing by a high-speed dispersion homogenizer, and then stirring at high speed to keep the whole suspension in a uniform state;
fourthly, the suspension is introduced into a conventional spray dryer for spray drying to prepare an EGCG microcapsule product;
the homogenizing pressure is 0.4 MPa; the spraying conditions are as follows: the air inlet temperature is 140-180 ℃, the air outlet temperature is 80-120 ℃, and the feeding speed is 1500-3000 ml/h;
secondly, preparing the granules
Weighing other filter rod particle raw materials except the filter rod particle raw material obtained in the step one in proportion;
secondly, baking the natural sweetener and the humectant raw materials at the baking temperature of 70 ℃, the cycle time of 30s and the baking time of 8h until the water content is lower than 2-3 percent;
thirdly, putting the baked and cooled raw materials into an ultrafine grinder for grinding, adjusting air induction quantity and rotating speed of a grinding and grading motor according to process requirements of different materials, and then putting the ground raw materials into a hopper of a vibrating screen to pass through a 120-mesh sieve for screening;
mixing the weighed and uniformly mixed auxiliary materials and the raw materials by using a high-speed shearing granulator;
fifthly, adding 20-30 parts of 45% alcohol into the uniformly mixed material obtained in the step IV, and mixing through a high-speed shearing granulator;
sixthly, granulating the mixture obtained in the fifth step into long column-shaped granules by a wet granulator, and finishing the granules into short column-shaped granules or spherical granules to obtain the product; the average particle size of the obtained particles is 0.3-0.8 mm;
seventhly, drying the granules subjected to the size stabilization by using a fluidized bed at normal temperature;
three, granule coating
Dissolving 1-5 parts of EGCG monomer and 1-5 parts of citric acid in 100-150 parts of 0.5% povidone K30 alcohol solution, and adding the EGCG solution on the surface of the particles obtained in the step (c) in a coating manner; the coating process comprises the following specific steps:
firstly, spraying coating on the bottom by using a bottom spraying fluidized bed;
② coating at low temperature or normal temperature, the temperature is not more than 50 ℃;
thirdly, the air inlet amount is preferably that the particles are in a boiling state;
fourthly, the liquid inlet amount is 0.5cm 3-1.5 cm 3/s;
and fifthly, air-drying for 3-5min after coating.
CN202010264867.3A 2020-04-07 2020-04-07 Filter stick particles containing epigallocatechin gallate and preparation method thereof Active CN113491346B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889144A (en) * 1987-05-29 1989-12-26 Japan Tobacco Inc. Filter for tobacco smoking
CN101128130A (en) * 2005-02-24 2008-02-20 菲利普莫里斯生产公司 Smoking article with tobacco beads
CN105661545A (en) * 2016-01-28 2016-06-15 武汉欧米嘉生物医药有限公司 Alpha-linolenic acid microcapsule capable of being directly used for cooking and preparation method of alpha-linolenic acid microcapsule
CN110810918A (en) * 2019-11-25 2020-02-21 云南恩典科技产业发展有限公司 Natural biological matrix filter stick particles and preparation method and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889144A (en) * 1987-05-29 1989-12-26 Japan Tobacco Inc. Filter for tobacco smoking
CN101128130A (en) * 2005-02-24 2008-02-20 菲利普莫里斯生产公司 Smoking article with tobacco beads
CN105661545A (en) * 2016-01-28 2016-06-15 武汉欧米嘉生物医药有限公司 Alpha-linolenic acid microcapsule capable of being directly used for cooking and preparation method of alpha-linolenic acid microcapsule
CN110810918A (en) * 2019-11-25 2020-02-21 云南恩典科技产业发展有限公司 Natural biological matrix filter stick particles and preparation method and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
齐连祥;于才渊;岳响玲;: "喷雾干燥制备酯型儿茶素微胶囊" *

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