CN108030772B - Plant-derived tremella capsule shell material and preparation method thereof - Google Patents
Plant-derived tremella capsule shell material and preparation method thereof Download PDFInfo
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- CN108030772B CN108030772B CN201711446986.5A CN201711446986A CN108030772B CN 108030772 B CN108030772 B CN 108030772B CN 201711446986 A CN201711446986 A CN 201711446986A CN 108030772 B CN108030772 B CN 108030772B
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/4816—Wall or shell material
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L31/00—Edible extracts or preparations of fungi; Preparation or treatment thereof
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
- A23P10/00—Shaping or working of foodstuffs characterised by the products
- A23P10/30—Encapsulation of particles, e.g. foodstuff additives
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Food Science & Technology (AREA)
- Nutrition Science (AREA)
- Mycology (AREA)
- Microbiology (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medicinal Preparation (AREA)
- General Preparation And Processing Of Foods (AREA)
Abstract
The invention relates to a plant tremella capsule shell material and a preparation method thereof, belonging to the field of plant capsule shell materials. Clean tremella is micronized, fused at high pressure, repaired at normal pressure, conditioned at normal pressure for heat preservation, and the like to prepare a water-soluble capsule shell material which can be used as a raw material for preparing soft and hard capsule shells and has good tensile capacity, good transparency and high embedding degree. The invention gives full play to the white color of the white fungus and the advantages of rich proteins, dietary fibers, white fungus polysaccharide and other nutrients, widens the application range of the white fungus and endows the white fungus with the diversity of deep processing; the production process is environment-friendly, and no waste residue, waste steam and harmful substances are generated; no chemical preparation is used, the product is safe to eat and stable in property, and the preparation requirement of the capsule shell for health food and medicines is met.
Description
Technical Field
The invention belongs to the field of plant capsule shell materials, and particularly relates to a plant tremella capsule shell material and a preparation method thereof.
Background
Capsules are generally divided into hard and soft capsules. Hard capsules, also known as hollow capsules, are most commonly used. The hollow capsule is composed of two capsule shells, namely a cap and a body, which are refined by adding auxiliary materials into medicinal and edible gelatin. The capsule has good bioavailability, can effectively mask unpleasant taste and smell of the content, protect the function and activity of the content from being damaged, and is convenient to swallow and protect digestive organs and respiratory tract. Therefore, the method can be widely applied to the production of medicines and health-care foods. At present, 6000 billions of hard capsules in the global market are demanded each year, and 2000 to 3000 billions of hard capsules in China are exported in part. Wherein the annual output of the gelatin hollow capsules is about 1200-1440 billion capsules, which accounts for about 30 percent of the market share of the gelatin hollow capsules all over the world. While the domestic gelatin hollow capsule industry is rapidly developed, a plurality of problems are exposed, particularly, in 4, 15, 2012, enterprises in Hebei who expose from quality report of every week use quick lime to decolor, bleach and clean leather waste, then decoct the leather waste into industrial gelatin, sell the industrial gelatin to pharmaceutical capsule production enterprises in Xinchang county, Zhejiang, and finally flow to pharmaceutical enterprises. According to investigation, the content of heavy metal chromium in capsules used by 13 batches of medicines in 9 pharmaceutical factories exceeds the standard, wherein the content of the heavy metal chromium exceeds the standard by more than 90 times, and the health and the safety of the public are seriously harmed. The poison capsule event has recently attracted a wide range of social attention. In addition, the raw material aspect: the most commonly used raw materials of the gelatin are bones, skins and tendons of pigs and cattle, and the gelatin capsule has huge risks of transferring animal harmful residual substances and animal-derived antigens such as mad cow disease, foot and mouth disease and the like to human beings. In the aspect of processing: in the process of refining the gelatin, raw materials such as animal skin, bones, tendons and the like need to be subjected to complex physicochemical treatment, and the three wastes generated in the production process have extremely bad influence on the environment. In the use aspect: the substances in the gelatin capsule can react with certain medicines and foods to influence the edible safety and physiological activity of the contents. The exposure of the 'poison capsule' event reveals that the gelatin capsule industry has serious technical problems and environmental ecological problems, and the product quality has great potential safety hazard which seriously harms the physical and psychological health of consumers. In order to avoid animal disease infection and pollution, the pure plant capsule with stable chemical property is produced by using plant resources with rich sources, so that the raw materials have rich sources and low price, the production is environment-friendly, the product is safe and reliable, and the method has important practical significance and great necessity for ensuring the health of people and promoting the harmonious development of society. Edible packaging films have been reported which are produced by using various polysaccharide substances (such as pullulan, konjac glucomannan, chitosan, sodium alginate, hydroxypropylmethyl fiber, carrageenan, etc.) as the base material of the film and using the gelling action of the polysaccharide substances and adding auxiliary agents such as reinforcing agents, plasticizers, etc. Hydroxypropyl methylcellulose hollow capsules, pullulan vegetable capsules, seaweed and plant starch plant capsules and the like are also reported in research and production. Since the natural starch is brittle and easy to break after film formation, and can not meet the requirement of toughness when being directly used for preparing capsules, functional groups are required to be introduced into the natural starch through physical, chemical or microbial treatment and other methods to improve the properties of the natural starch such as film forming property, stability and the like, so that the capsule shell material with application value can be prepared. In addition, there are reports on the research of producing protein film with wheat gluten or zein as raw material in the aspect of protein film material, and the screening of solvent and plasticizer and film forming conditions are discussed. The annual output of the vegetable capsules in the global market is about 1000 hundred million capsules at present, and the vegetable capsules mainly take sugar, seaweed and cellulose as raw materials. The annual sales volume of hydroxypropyl methylcellulose empty capsules worldwide has exceeded 200 billion capsules. The raw material cost of the current vegetable hollow capsule is between 15 and 20 ten thousand yuan per ton, and the raw material cost of the animal gelatin is between 4 and 5 ten thousand yuan per ton. The high cost of botanical capsules severely limits the use of botanical capsules.
The plant protein can also be used as a plant capsule film-forming material, such as soybean protein, corn protein and the like, but common plant protein films are brittle and fragile, have poor stretchability and extensibility, are easy to absorb moisture and soften, are putrefactive and deteriorate, have poor film stability, cannot meet the existing standards in indexes such as disintegration time limit, drying weight loss and the like, and cannot meet the requirements of practical application at high production cost. Because of the rigid ring structure and the hydrophilic groups in the macromolecular chain of the single polysaccharide substance, the prepared capsule is brittle compared with a gelatin capsule, the material has poor formability, is easy to dissolve, has short decomposition time, and is difficult to ensure the efficacy of some medicines.
Disclosure of Invention
The invention provides a vegetative tremella capsule shell material and a preparation method thereof.
The technical scheme adopted by the invention is that the method is obtained by the following steps:
high-pressure hot water melting treatment of tremella
Finely crushing and screening clean tremella to obtain tremella powder of 70-150 mu m, adding water to homogenate the tremella powder to obtain tremella slurry, wherein the mass content of the tremella powder in the slurry is 1.8-7.5%, and then carrying out high-pressure hot water melting treatment under the conditions of pressure of 0.8-25 MPa, temperature of 90-150 ℃, rotation speed of 100-800 r/min and time of 30-80 min;
(II) Normal pressure tissue repair and interweaving
Cooling the viscous slurry obtained in the step (I) to 55-85 ℃, then carrying out constant-pressure screw extrusion heat-preservation reflux treatment, continuously refluxing the extruded materials into a feed inlet of an extruder, and carrying out treatment in a circulating manner for 20-50 min, wherein the constant-pressure extrusion reflux treatment operation is as follows: performing extrusion reflux operation on a single-screw and a double-screw mixing screws, namely enabling materials to flow through a short-distance single-screw extruder, wherein the length of each screw is 25cm, and the diameter of each screw is 56 mm; then directly entering a long-shaft double screw, wherein the length of the screw is 120cm, the diameter of the screw is 60mm, and the steps are circulated until the treatment time is reached;
(III) keeping warm at normal pressure, conditioning and preparing capsule shell material
Adjusting the pH value of the material obtained in the step (II) to 5.7-6.8, adding water and food-grade glycerol, adjusting the mass concentration of the slurry to 1.5-3.0% and the mass concentration of the food-grade glycerol to 0.05-0.3%, uniformly stirring, carrying out normal-pressure screw extrusion, heat preservation and reflux treatment, carrying out heat preservation at the temperature of 45-60 ℃, continuously refluxing the extruded material to a feed inlet of an extruder, and carrying out circulating treatment for 10-30 min to prepare a liquid capsule shell material;
drying the obtained liquid capsule shell material at a low temperature below 60 deg.C to obtain dried powder capsule shell material.
The invention has the advantages that: the characteristics of white color of the food raw material tremella fuciformis is fully exerted, the tremella fuciformis is rich in various nutrients such as protein, dietary fiber and tremella polysaccharide, deep processing diversity is endowed, and the clean tremella fuciformis is micronized, melted under high pressure, repaired at normal pressure tissue, conditioned at normal pressure by heat preservation and the like to prepare the water-soluble capsule shell material, so that the water-soluble capsule shell material can be used for preparing soft and hard capsule shells, and has good tensile capacity, good transparency and high embedding degree. The production process is environment-friendly, and no waste residue, waste steam and harmful substances are generated; the use of animal raw materials is completely avoided, the change and the repair of the components and the tissue structure of the raw materials are carried out by utilizing physical factors in the whole production process, no chemical preparation is used, the product is safe to eat and stable in property, and the preparation requirements of the capsule shells for health-care food and medicines are met.
Each 100g of dried tremella contains 75.3g of carbohydrate and 6.6g of protein. The carbohydrates in the tremella are mainly tremella polysaccharide and dietary fiber, and the tremella polysaccharide accounts for about 70% of the dry weight of the tremella. Avoids the complicated means of separation, purification, mixing, modulation and the like of polysaccharide and plant protein, makes full use of the gel characteristic of polysaccharide compounds in tremella and the structural characteristic of protein to directly prepare the membrane material, and has remarkable high quality and innovation. The tremella processed by the technology has the dissolution rate of tremella polysaccharide up to 70.2% (g/100 g) and the dissolution rate of protein 6.3% (g/100 g). The elongation at break of the prepared tremella membrane is 24.2 percent, the tensile strength is 39.82MPa, and the requirement of preparing a hard capsule shell material is met.
In addition, the invention firstly adopts the normal pressure reflux operation of the extruder to carry out the molecular mixing and blending and the tissue repair of viscous materials, does not generate severe tearing and destruction effects on the materials under the normal pressure condition, and does not generate a large amount of steam to carry out cutting and spray explosion on the materials, but fully utilizes the slits among the screw rods, the extrusion cavity and the screw rods to generate the friction, kneading and stretching effects on the materials, realizes the mild carding and flattening of the materials subjected to high-pressure and high-energy treatment, improves the tissue state of the materials and meets the preparation requirement of the plant membrane.
Detailed Description
Example 1
High-pressure hot water melting treatment of tremella
Finely crushing and screening clean tremella to obtain 70-micron tremella powder, adding water, homogenizing to obtain tremella slurry, wherein the mass content of the tremella powder in the slurry is 1.8%, and then carrying out high-pressure hot water melting treatment under the conditions of pressure of 0.8MPa, temperature of 90 ℃, rotation speed of 100r/min and time of 30min to melt and liquefy the tremella, so that the tremella has good fluidity and viscosity;
(II) Normal pressure tissue repair and interweaving
Cooling the sticky slurry obtained in the step (I) to 55 ℃, then carrying out heat preservation and reflux treatment by a screw at normal pressure, continuously refluxing the extruded material into a feed inlet of an extruder, and carrying out treatment in a circulating manner for 20min, thereby further improving the uniformity and the fineness of a material system, and simultaneously repairing, carding and mixing the spatial organization structures of natural components such as protein, tremella polysaccharide, cellulose and the like in the material to form a stable interwoven structure, so that the sticky slurry has the film forming property; the normal pressure extrusion reflux treatment operation comprises the following steps: performing extrusion reflux operation on a single-screw and a double-screw mixing screws, namely enabling materials to flow through a short-distance single-screw extruder, wherein the length of each screw is 25cm, and the diameter of each screw is 56 mm; then directly entering a long-shaft double screw, wherein the length of the screw is 120cm, the diameter of the screw is 60mm, and the steps are circulated until the treatment time is reached;
(III) keeping warm at normal pressure, conditioning and preparing capsule shell material
Adjusting the pH value of the material obtained in the step (II) to 5.7, adding a proper amount of water and food-grade glycerol, adjusting the mass concentration of the slurry to 1.5% and the mass concentration of the food-grade glycerol to 0.05%, uniformly stirring, carrying out normal-pressure screw extrusion, heat preservation and reflux treatment, carrying out heat preservation at 45 ℃, continuously refluxing the extruded material to a feed inlet of an extruder, and carrying out circulating treatment for 10min to prepare a liquid capsule shell material which can be used as a production raw material of hard capsule shells and soft capsule shells; the tensile strength, flexibility, folding endurance and transparency of the capsule shell produced by taking the composite material as a raw material all meet the requirements of national relevant standards;
drying the obtained liquid capsule shell material at a low temperature below 60 deg.C to obtain dried powder capsule shell material.
Example 2
High-pressure hot water melting treatment of tremella
Finely crushing and screening clean tremella to obtain 150-micron tremella powder, adding water, homogenizing to obtain tremella slurry, wherein the mass content of the tremella powder in the slurry is 7.5%, and then carrying out high-pressure hot water melting treatment under the conditions of 25MPa of pressure, 150 ℃ of temperature, 800r/min of rotation speed and 80min of time to melt and liquefy the tremella, so that the tremella has good fluidity and viscosity;
(II) Normal pressure tissue repair and interweaving
Cooling the sticky slurry obtained in the step (I) to 85 ℃, then extruding, insulating and refluxing the sticky slurry by a normal-pressure screw, continuously refluxing and feeding the extruded material into a feed inlet of an extruder, circularly treating the extruded material for 50min, further improving the uniformity and the fineness of a material system, and simultaneously repairing, carding and mixing the spatial organization structures of natural components such as protein, tremella polysaccharide, cellulose and the like in the material to form a stable interwoven structure, so that the interwoven structure has the film forming property, wherein the normal-pressure extrusion and refluxing treatment operation is as follows: performing extrusion reflux operation on a single-screw and a double-screw mixing screws, namely enabling materials to flow through a short-distance single-screw extruder, wherein the length of each screw is 25cm, and the diameter of each screw is 56 mm; then directly entering a long-shaft double screw, wherein the length of the screw is 120cm, the diameter of the screw is 60mm, and the steps are circulated until the treatment time is reached;
(III) keeping warm at normal pressure, conditioning and preparing capsule shell material
And (3) adjusting the pH value of the material obtained in the step (II) to 6.8, adding a proper amount of water and food-grade glycerol, adjusting the mass concentration of the slurry to 3.0% and the mass concentration of the food-grade glycerol to 0.3%, uniformly stirring, carrying out normal-pressure screw extrusion, heat preservation and reflux treatment, carrying out heat preservation at the temperature of 60 ℃, continuously refluxing the extruded material into a feed inlet of an extruder, and carrying out circulating treatment for 30min to prepare a liquid capsule shell material which can be used as a production raw material of hard capsule shells and soft capsule shells. The tensile strength, flexibility, folding endurance and transparency of the capsule shell produced by taking the composite material as a raw material all meet the requirements of national relevant standards;
drying the obtained liquid capsule shell material at a low temperature below 60 deg.C to obtain dried powder capsule shell material.
Example 3
High-pressure hot water melting treatment of tremella
Finely crushing and screening clean tremella to obtain 110-micron tremella powder, adding water, homogenizing to obtain tremella slurry, wherein the mass content of the tremella powder in the slurry is 4.7%, and then carrying out high-pressure hot water melting treatment under the conditions of pressure of 13MPa, temperature of 120 ℃, rotation speed of 450r/min and time of 55min to melt and liquefy the tremella, so that the tremella has good fluidity and viscosity;
(II) Normal pressure tissue repair and interweaving
Cooling the sticky slurry obtained in the step (I) to 70 ℃, then carrying out heat preservation reflux treatment by a normal-pressure screw rod, continuously refluxing the extruded material into a feed inlet of an extruder, carrying out treatment in a circulating manner for 35min, further improving the uniformity and the fineness of a material system, and simultaneously repairing, carding and mixing the spatial organization structures of natural components such as protein, tremella polysaccharide, cellulose and the like in the material to form a stable interwoven structure, so that the interwoven structure has the film forming property, wherein the normal-pressure extrusion reflux treatment operation is as follows: performing extrusion reflux operation on a single-screw and a double-screw mixing screws, namely enabling materials to flow through a short-distance single-screw extruder, wherein the length of each screw is 25cm, and the diameter of each screw is 56 mm; then directly entering a long-shaft double screw, wherein the length of the screw is 120cm, the diameter of the screw is 60mm, and the steps are circulated until the treatment time is reached;
(III) keeping warm at normal pressure, conditioning and preparing capsule shell material
Adjusting the pH value of the material obtained in the step (II) to 6.3, adding a proper amount of water and food-grade glycerol, adjusting the mass concentration of the slurry to 2.3% and the mass concentration of the food-grade glycerol to 0.18%, uniformly stirring, carrying out normal-pressure screw extrusion, heat preservation and reflux treatment, carrying out heat preservation at 52 ℃, continuously refluxing the extruded material into a feed inlet of an extruder, and carrying out circulating treatment for 20min to prepare a liquid capsule shell material, wherein the liquid capsule shell material can be used as a production raw material of hard capsule shells and soft capsule shells, and the tensile strength, the flexibility, the folding resistance and the transparency of the capsule shells produced by taking the liquid capsule shell material as the raw material all meet the requirements of related;
drying the obtained liquid capsule shell material at a low temperature below 60 deg.C to obtain dried powder capsule shell material.
Example 4
High-pressure hot water melting treatment of tremella
Finely crushing and screening clean tremella to obtain 120-micron tremella powder, adding water, homogenizing to obtain tremella slurry, wherein the mass content of the tremella powder in the slurry is 2.5%, and then carrying out high-pressure hot water melting treatment under the conditions of pressure of 20MPa, temperature of 100 ℃, rotation speed of 600r/min and time of 50min to melt and liquefy the tremella, so that the tremella has good fluidity and viscosity;
(II) Normal pressure tissue repair and interweaving
Cooling the sticky slurry obtained in the step (I) to 60 ℃, then carrying out normal-pressure screw extrusion heat-preservation reflux treatment, continuously refluxing the extruded material into a feed inlet of an extruder, carrying out treatment in a circulating manner for 40min, further improving the uniformity and the fineness of a material system, and simultaneously repairing, carding and mixing the spatial organization structures of natural components such as protein, tremella polysaccharide, cellulose and the like in the material to form a stable interweaving structure, so that the material has the film forming property, wherein the normal-pressure extrusion reflux treatment operation is a single-double mixing screw extrusion reflux operation, firstly the material flows through a short-distance single-screw extruder, the length of the screw is 25cm, and the diameter of the screw is 56 mm; then directly entering a long-shaft double screw, wherein the length of the screw is 120cm, the diameter of the screw is 60mm, and the steps are circulated until the treatment time is reached;
(III) keeping warm at normal pressure, conditioning and preparing capsule shell material
Adjusting the pH value of the material obtained in the step (II) to 6.0, adding appropriate amount of water and food grade glycerol, adjusting the mass concentration of the slurry to 2.0% and the mass concentration of the food grade glycerol to 0.2%, stirring uniformly, carrying out normal pressure screw extrusion, heat preservation and reflux treatment, carrying out heat preservation at 50 ℃, continuously refluxing the extruded material into a feed inlet of an extruder, and carrying out circulating treatment for 20min to prepare a liquid capsule shell material which can be used as a production raw material of hard capsule shells and soft capsule shells; the tensile strength, flexibility, folding endurance and transparency of the capsule shell produced by taking the composite material as a raw material all meet the requirements of national relevant standards;
drying the obtained liquid capsule shell material at a low temperature below 60 deg.C to obtain dried powder capsule shell material.
Claims (2)
1. A plant tremella capsule shell material is characterized by being obtained by the following steps:
high-pressure hot water melting treatment of tremella
Finely crushing and screening clean tremella to obtain tremella powder of 70-150 mu m, adding water to homogenate the tremella powder to obtain tremella slurry, wherein the mass content of the tremella powder in the slurry is 1.8-7.5%, and then carrying out high-pressure hot water melting treatment under the conditions of pressure of 0.8-25 MPa, temperature of 90-150 ℃, rotation speed of 100-800 r/min and time of 30-80 min;
(II) Normal pressure tissue repair and interweaving
Cooling the viscous slurry obtained in the step (I) to 55-85 ℃, then carrying out constant-pressure screw extrusion heat-preservation reflux treatment, continuously refluxing the extruded materials into a feed inlet of an extruder, and carrying out treatment in a circulating manner for 20-50 min, wherein the constant-pressure extrusion reflux treatment operation is as follows: performing extrusion reflux operation on a single-screw and a double-screw mixing screws, namely enabling materials to flow through a short-distance single-screw extruder, wherein the length of each screw is 25cm, and the diameter of each screw is 56 mm; then directly entering a long-shaft double screw, wherein the length of the screw is 120cm, and the diameter of the screw is 60mm, and the steps are repeated until the treatment time is reached;
(III) keeping warm at normal pressure, conditioning and preparing capsule shell material
Adjusting the pH value of the material obtained in the step (II) to 5.7-6.8, adding water and food-grade glycerol, adjusting the mass concentration of the slurry to 1.5-3.0% and the mass concentration of the food-grade glycerol to 0.05-0.3%, uniformly stirring, carrying out normal-pressure screw extrusion, heat preservation and reflux treatment, carrying out heat preservation at the temperature of 45-60 ℃, continuously refluxing the extruded material to a feed inlet of an extruder, and carrying out circulating treatment for 10-30 min to prepare a liquid capsule shell material;
drying the obtained liquid capsule shell material at a low temperature below 60 deg.C to obtain dried powder capsule shell material.
2. The preparation method of the shell material of the botanical tremella capsule is characterized by comprising the following steps:
high-pressure hot water melting treatment of tremella
Finely crushing and screening clean tremella to obtain tremella powder of 70-150 mu m, adding water to homogenate the tremella powder to obtain tremella slurry, wherein the mass content of the tremella powder in the slurry is 1.8-7.5%, and then carrying out high-pressure hot water melting treatment under the conditions of pressure of 0.8-25 MPa, temperature of 90-150 ℃, rotation speed of 100-800 r/min and time of 30-80 min;
(II) Normal pressure tissue repair and interweaving
Cooling the viscous slurry obtained in the step (I) to 55-85 ℃, then carrying out constant-pressure screw extrusion heat-preservation reflux treatment, continuously refluxing the extruded materials into a feed inlet of an extruder, and carrying out treatment in a circulating manner for 20-50 min, wherein the constant-pressure extrusion reflux treatment operation is as follows: performing extrusion reflux operation on a single-screw and a double-screw mixing screws, namely enabling materials to flow through a short-distance single-screw extruder, wherein the length of each screw is 25cm, and the diameter of each screw is 56 mm; then directly entering a long-shaft double screw, wherein the length of the screw is 120cm, the diameter of the screw is 60mm, and the steps are circulated until the treatment time is reached;
(III) keeping warm at normal pressure, conditioning and preparing capsule shell material
Adjusting the pH value of the material obtained in the step (II) to 5.7-6.8, adding water and food-grade glycerol, adjusting the mass concentration of the slurry to 1.5-3.0% and the mass concentration of the food-grade glycerol to 0.05-0.3%, uniformly stirring, carrying out normal-pressure screw extrusion, heat preservation and reflux treatment, carrying out heat preservation at the temperature of 45-60 ℃, continuously refluxing the extruded material to a feed inlet of an extruder, and carrying out circulating treatment for 10-30 min to prepare a liquid capsule shell material;
further comprises drying the obtained liquid capsule shell material at a low temperature below 60 deg.C to obtain dried powder capsule shell material.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1695600A (en) * | 2005-05-13 | 2005-11-16 | 天津大学 | Method for preparing components, capsules and capsule wall material of combination of natural polysaccharide macromolecules |
| CN1895235A (en) * | 2006-06-29 | 2007-01-17 | 郑建璋 | Production of tremella-polysaccharose capsules |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1695600A (en) * | 2005-05-13 | 2005-11-16 | 天津大学 | Method for preparing components, capsules and capsule wall material of combination of natural polysaccharide macromolecules |
| CN1895235A (en) * | 2006-06-29 | 2007-01-17 | 郑建璋 | Production of tremella-polysaccharose capsules |
Non-Patent Citations (1)
| Title |
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| 三种食用菌可溶性膳食纤维提取工艺优化及功能性研究;王庆庆;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ缉（电子期刊）》;20170215(第02期);第43页最后1段至第44页第1段 * |
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