CN111877041A - Method for extracting Chinese herbal medicine plant fiber - Google Patents
Method for extracting Chinese herbal medicine plant fiber Download PDFInfo
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- CN111877041A CN111877041A CN202010682051.2A CN202010682051A CN111877041A CN 111877041 A CN111877041 A CN 111877041A CN 202010682051 A CN202010682051 A CN 202010682051A CN 111877041 A CN111877041 A CN 111877041A
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- plant fiber
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- chinese herbal
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Cosmetics (AREA)
Abstract
The invention discloses a method for extracting Chinese herbal medicine plant fibers, which belongs to the technical field of plant fiber extraction and comprises the following steps: (1) putting plant raw materials, dilute hydrochloric acid and silicon dioxide into a reactor, controlling the temperature to be 35-45 ℃, and carrying out ultrasonic treatment for 10-15min to obtain a mixed solution A; (2) filtering the mixed solution A, and removing silicon dioxide to obtain a pretreatment solution; (3) adding an alkaline solution into the pretreatment solution, placing the solution in an electric heating stirrer, and stirring the solution for 5 to 8 minutes at the rotating speed of 1000-; (4) placing the mixed solution B in a cooking pot, keeping the temperature at 70-80 ℃, and continuously cooking for 40-45min to obtain residue liquid; (5) filtering the residue liquid to obtain filter residue, repeatedly washing the filter residue with washing liquid, and drying to obtain plant fiber; according to the invention, dilute hydrochloric acid and silicon dioxide are added, so that the acidic environment is favorable for destroying hemicellulose and lignin in plant raw material cell walls, and the extraction purity of cellulose is improved.
Description
Technical Field
The invention relates to the technical field of plant fiber extraction, in particular to a method for extracting Chinese herbal medicine plant fiber.
Background
Plant fiber is a sclerenchyma tissue widely distributed in seed plants. Its cells are slender, sharp at both ends, with thick secondary walls, often with single-grain pores, and generally without live protoplasts at maturity. The plant fiber is filamentous or floccule generated by combining cellulose and various nutrient substances, has the functions of supporting, connecting, wrapping, filling and the like on plants, and is widely present in plant stalks, roots, fruits and shells. Plant fibers develop from different meristems. The fibers of the xylem and bast originate from the original or formed layer. Some fibers may then develop from primary meristems, and cells that will develop into fibers stop dividing transversely very early, but elongate only longitudinally. The fibers in the bundle sheath may be partly formed from the primary meristem and partly from the primary meristem. The nascent fibers occur before the organ is extended and they can continue to extend to a considerable length while the surrounding cells are still dividing. For example, ramie bast fibers can continue to elongate for several months, and finally increase in length by 4 to 5 ten thousand times, which can reach 55 cm at the longest. Elongation of such cells, in addition to growth with surrounding cells (co-growth); there is also growth where the cell tips can penetrate between surrounding cells (invasive growth). After the ramie fibers cease to elongate, the base of the fibers may also have a thick secondary wall when secondary wall deposition occurs. The tip still has living contents and a thin cell wall, and thus the cell tip can continue to elongate.
The waste Chinese herbal medicine plant cellulose is separated, and the waste Chinese herbal medicine plant cellulose has the functions of diminishing inflammation and resisting bacteria, and is woven into yarn to provide a new textile raw material and prepare a medical protective product, such as: mask, underwear, sanitary towel, infant article, etc., which is beneficial to the full utilization of resources; most of plant fiber extraction methods in the prior art utilize pulp to directly soak and dissolve plant cell walls, namely lignin and hemicellulose, so as to obtain cellulose, but cell walls formed by compact fibers are firmer, are directly dissolved by alkali liquor, the dissolution speed is lower, the extraction efficiency is influenced, the dissolution is insufficient, so that the extracted cellulose contains more lignin and hemicellulose, and the purity of the extracted cellulose is reduced.
Therefore, a method for extracting Chinese herbal medicine plant fibers is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a method for extracting Chinese herbal medicine plant fibers, which aims to solve the problems in the background technology.
In order to realize the purpose, the invention provides a method for extracting Chinese herbal medicine plant fiber, which comprises the following steps:
(1) putting plant raw materials, dilute hydrochloric acid and silicon dioxide into a reactor, controlling the temperature to be 35-45 ℃, and carrying out ultrasonic treatment for 10-15min to obtain a mixed solution A;
(2) filtering the mixed solution A, and removing silicon dioxide to obtain a pretreatment solution;
(3) adding an alkaline solution into the pretreatment solution, placing the solution in an electric heating stirrer, and stirring the solution for 5 to 8 minutes at the rotating speed of 1000-;
(4) placing the mixed solution B in a cooking pot, keeping the temperature at 70-80 ℃, and continuously cooking for 40-45min to obtain residue liquid;
(5) and filtering the residue liquid to obtain filter residue, repeatedly washing the filter residue by using a washing liquid, and drying to obtain the plant fiber.
Preferably, the plant material in step (1) is pulverized in advance, and is soaked in 10% sodium chloride solution for 10-20 min.
Preferably, the alkaline solution in step (3) is a sodium hydroxide or potassium hydroxide solution.
Preferably, the concentration of the sodium hydroxide or potassium hydroxide solution is 1% -3%.
Preferably, the reaction temperature in the step (3) is 35-45 ℃.
Preferably, the digester in the step (4) is an autoclave, and the cooking pressure is kept at 0.7-0.8 MPa.
Preferably, the washing solution in the step (5) is distilled water or ethanol.
The invention has the beneficial effects that:
the invention is beneficial to killing germ and insect eggs in the plant raw materials by adding 10 percent of sodium chloride solution; according to the invention, dilute hydrochloric acid and silicon dioxide are added, the dilute hydrochloric acid enables the solution to be in an acidic environment, the acidic environment is favorable for destroying hemicellulose and lignin in plant raw material cell walls, the cell walls composed of the lignin and the hemicellulose become soft and collapse, then ultrasonic treatment is utilized, the silicon dioxide and the plant raw materials move ceaselessly in the acidic solution, the effective contact times of the silicon dioxide and the plant raw materials are increased, harder silicon dioxide continuously collides with the cell walls, the soft cell walls are gradually crushed, the crushing speed and the crushing degree of the cell walls are accelerated, the lignin and the hemicellulose are conveniently and fully dissolved by subsequent alkali liquor, the integral extraction efficiency is improved after all, and the extraction purity of cellulose is favorably improved;
according to the invention, high-pressure cooking is added in the step (4), the alkali liquor under high temperature and high pressure accelerates the breaking of ester bonds between lignin and hemicellulose, and simultaneously, the cellulose and the hemicellulose combined through hydrogen bonds are also quickly separated, in addition, the high-pressure environment is favorable for the breaking of cell walls, and the alkali liquor is favorable for the sufficient dissolution of the lignin and the hemicellulose under the high-temperature and high-pressure environment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
A method for extracting Chinese herbal medicine plant fibers comprises the following steps:
(1) putting plant raw materials, dilute hydrochloric acid and silicon dioxide into a reactor, controlling the temperature to be 35 ℃, and carrying out ultrasonic treatment for 10min to obtain a mixed solution A;
(2) filtering the mixed solution A, and removing silicon dioxide to obtain a pretreatment solution;
(3) adding an alkaline solution into the pretreatment solution, placing the mixture into an electric heating stirrer, and stirring the mixture for 5min at the rotating speed of 1000r/min to obtain a mixed solution B;
(4) placing the mixed solution B in a cooking pot, keeping the temperature at 70 ℃, and continuously cooking for 40min to obtain residue liquid;
(5) and filtering the residue liquid to obtain filter residue, repeatedly washing the filter residue by using a washing liquid, and drying to obtain the plant fiber.
Crushing the plant raw materials in the step (1) in advance, and soaking the plant raw materials in a sodium chloride solution with the concentration of 10% for 10 min; the alkaline solution in the step (3) is sodium hydroxide or potassium hydroxide solution; the concentration of the sodium hydroxide solution is 1%; the reaction temperature in the step (3) is 35 ℃; the cooking pot in the step (4) is a high-pressure cooking pot, and the cooking pressure is kept at 0.7 MPa; and (5) using distilled water as flushing liquid.
Example two
A method for extracting Chinese herbal medicine plant fibers comprises the following steps:
(1) putting plant raw materials, dilute hydrochloric acid and silicon dioxide into a reactor, controlling the temperature at 38 ℃, and carrying out ultrasonic treatment for 12min to obtain a mixed solution A;
(2) filtering the mixed solution A, and removing silicon dioxide to obtain a pretreatment solution;
(3) adding an alkaline solution into the pretreatment solution, placing the mixture into an electric heating stirrer, and stirring the mixture for 6min at the rotating speed of 1100r/min to obtain a mixed solution B;
(4) placing the mixed solution B in a cooking pot, keeping the temperature at 75 ℃, and continuously cooking for 40min to obtain residue liquid;
(5) and filtering the residue liquid to obtain filter residue, repeatedly washing the filter residue by using a washing liquid, and drying to obtain the plant fiber.
Crushing the plant raw materials in the step (1) in advance, and soaking the plant raw materials in a 10% sodium chloride solution for 12 min; the alkaline solution in the step (3) is sodium hydroxide or potassium hydroxide solution; the concentration of the sodium hydroxide solution is 1%; the reaction temperature in the step (3) is 40 ℃; the cooking pot in the step (4) is a high-pressure cooking pot, and the cooking pressure is kept at 0.7 MPa; and (5) using distilled water as flushing liquid.
EXAMPLE III
A method for extracting Chinese herbal medicine plant fibers comprises the following steps:
(1) putting plant raw materials, dilute hydrochloric acid and silicon dioxide into a reactor, controlling the temperature at 38 ℃, and carrying out ultrasonic treatment for 12min to obtain a mixed solution A;
(2) filtering the mixed solution A, and removing silicon dioxide to obtain a pretreatment solution;
(3) adding an alkaline solution into the pretreatment solution, and stirring for 6min in an electric heating stirrer at the rotating speed of 1200r/min to obtain a mixed solution B;
(4) placing the mixed solution B in a cooking pot, keeping the temperature at 75 ℃, and continuously cooking for 40min to obtain residue liquid;
(5) and filtering the residue liquid to obtain filter residue, repeatedly washing the filter residue by using a washing liquid, and drying to obtain the plant fiber.
Crushing the plant raw materials in the step (1) in advance, and soaking the plant raw materials in a 10% sodium chloride solution for 12 min; the alkaline solution in the step (3) is sodium hydroxide or potassium hydroxide solution; the concentration of the sodium hydroxide solution is 1%; the reaction temperature in the step (3) is 40 ℃; the cooking pot in the step (4) is a high-pressure cooking pot, and the cooking pressure is kept at 0.7 MPa; and (5) using distilled water as flushing liquid.
Example four
A method for extracting Chinese herbal medicine plant fibers comprises the following steps:
(1) putting plant raw materials, dilute hydrochloric acid and silicon dioxide into a reactor, controlling the temperature at 40 ℃, and carrying out ultrasonic treatment for 12min to obtain a mixed solution A;
(2) filtering the mixed solution A, and removing silicon dioxide to obtain a pretreatment solution;
(3) adding an alkaline solution into the pretreatment solution, placing the mixture into an electric heating stirrer, and stirring for 7min at the rotating speed of 1300r/min to obtain a mixed solution B;
(4) placing the mixed solution B in a cooking pot, keeping the temperature at 78 ℃, and continuously cooking for 42min to obtain residue liquid;
(5) and filtering the residue liquid to obtain filter residue, repeatedly washing the filter residue by using a washing liquid, and drying to obtain the plant fiber.
Crushing the plant raw materials in the step (1) in advance, and soaking the plant raw materials in a 10% sodium chloride solution for 15 min; the alkaline solution in the step (3) is sodium hydroxide or potassium hydroxide solution; the concentration of the potassium hydroxide solution is 2%; the reaction temperature in the step (3) is 40 ℃; the cooking pot in the step (4) is a high-pressure cooking pot, and the cooking pressure is kept at 0.8 MPa; and (5) washing liquid in the step (5) is ethanol.
EXAMPLE five
A method for extracting Chinese herbal medicine plant fibers comprises the following steps:
(1) putting plant raw materials, dilute hydrochloric acid and silicon dioxide into a reactor, controlling the temperature at 45 ℃, and carrying out ultrasonic treatment for 15min to obtain a mixed solution A;
(2) filtering the mixed solution A, and removing silicon dioxide to obtain a pretreatment solution;
(3) adding an alkaline solution into the pretreatment solution, placing the solution in an electric heating stirrer, and stirring the solution for 8min at a rotating speed of 1500r/min to obtain a mixed solution B;
(4) placing the mixed solution B in a cooking pot, keeping the temperature at 80 ℃, and continuously cooking for 45min to obtain residue liquid;
(5) and filtering the residue liquid to obtain filter residue, repeatedly washing the filter residue by using a washing liquid, and drying to obtain the plant fiber.
Crushing the plant raw materials in the step (1) in advance, and soaking the plant raw materials in a sodium chloride solution with the concentration of 10% for 20 min; the alkaline solution in the step (3) is sodium hydroxide or potassium hydroxide solution; the concentration of the potassium hydroxide solution is 3%; the reaction temperature in the step (3) is 45 ℃; the cooking pot in the step (4) is a high-pressure cooking pot, and the cooking pressure is kept at 0.8 MPa; and (5) washing liquid in the step (5) is ethanol.
Comparative example
A method for extracting Chinese herbal medicine plant fibers comprises the following steps:
(1) putting plant raw materials and deionized water into a reactor, controlling the temperature at 38 ℃, and carrying out ultrasonic treatment for 12min to obtain a mixed solution A;
(2) adding an alkaline solution into the mixed solution A, and stirring for 6min in an electric heating stirrer at the rotating speed of 1200r/min to obtain a mixed solution B;
(3) placing the mixed solution B in a cooking pot, keeping the temperature at 75 ℃, and continuously cooking for 40min to obtain residue liquid;
(4) and filtering the residue liquid to obtain filter residue, repeatedly washing the filter residue by using a washing liquid, and drying to obtain the plant fiber.
Crushing the plant raw materials in the step (1) in advance, and soaking the plant raw materials in a 10% sodium chloride solution for 12 min; the alkaline solution in the step (3) is sodium hydroxide or potassium hydroxide solution; the concentration of the sodium hydroxide solution is 1%; the reaction temperature in the step (3) is 40 ℃; the cooking pot in the step (4) is a high-pressure cooking pot, and the cooking pressure is kept at 0.7 MPa; and (5) using distilled water as flushing liquid.
Result detection
The test method comprises the following steps: and (3) taking bulbus fritillariae cirrhosae as an extraction object, preparing the filter residue in the step (5) into a liquid, and measuring the cellulose content in the prepared liquid by adopting a nitric acid ethanol method. Specific test results are shown in the following table.
Apparent cellulose content
| Group of | Content of cellulose/%) |
| Example 1 | 91.6 |
| Example 2 | 92.1 |
| Example 3 | 92.2 |
| Example 4 | 91.3 |
| Example 5 | 91.9 |
| Comparative example | 85.3 |
The comparative example did not have the addition of dilute hydrochloric acid and silica, nor sonication.
In summary, the following steps: from the above table, the average cellulose content in the examples of the present application is 91.82%, and the cellulose content in the comparative examples is 85.3%, which is much lower than 91.82%, indicating that the filter residue which is not acidified and sonicated contains more lignin and hemicellulose which are not dissolved by the alkali liquor, resulting in the decrease of the purity of the cellulose; the filter residue prepared by the method has high cellulose content, and is beneficial to extraction of cellulose.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive and do not limit the method of making a high strength caliper seal to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The extraction method of the Chinese herbal medicine plant fiber is characterized by comprising the following steps:
(1) putting plant raw materials, dilute hydrochloric acid and silicon dioxide into a reactor, controlling the temperature to be 35-45 ℃, and carrying out ultrasonic treatment for 10-15min to obtain a mixed solution A;
(2) filtering the mixed solution A, and removing silicon dioxide to obtain a pretreatment solution;
(3) adding an alkaline solution into the pretreatment solution, placing the solution in an electric heating stirrer, and stirring the solution for 5 to 8 minutes at the rotating speed of 1000-;
(4) placing the mixed solution B in a cooking pot, keeping the temperature at 70-80 ℃, and continuously cooking for 40-45min to obtain residue liquid;
(5) and filtering the residue liquid to obtain filter residue, repeatedly washing the filter residue by using a washing liquid, and drying to obtain the plant fiber.
2. The method for extracting herbal plant fiber as claimed in claim 1, wherein the plant material in step (1) is pulverized in advance and soaked in 10% sodium chloride solution for 10-20 min.
3. The method for extracting Chinese herbal medicine plant fiber as claimed in claim 1, wherein the alkaline solution in step (3) is sodium hydroxide or potassium hydroxide solution.
4. The method for extracting herbal plant fibers as claimed in claim 3, wherein the concentration of the sodium hydroxide or potassium hydroxide solution is 1% -3%.
5. The method for extracting Chinese herbal medicine plant fiber as claimed in claim 1, wherein the reaction temperature in the step (3) is 35-45 ℃.
6. The method for extracting Chinese herbal medicine plant fiber according to claim 1, wherein the cooking pot in the step (4) is an autoclave, and the cooking pressure is maintained at 0.7-0.8 MPa.
7. The method for extracting Chinese herbal medicine plant fiber as claimed in claim 1, wherein the washing liquid in step (5) is distilled water or ethanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010682051.2A CN111877041A (en) | 2020-07-15 | 2020-07-15 | Method for extracting Chinese herbal medicine plant fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010682051.2A CN111877041A (en) | 2020-07-15 | 2020-07-15 | Method for extracting Chinese herbal medicine plant fiber |
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| CN111877041A true CN111877041A (en) | 2020-11-03 |
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| CN202010682051.2A Withdrawn CN111877041A (en) | 2020-07-15 | 2020-07-15 | Method for extracting Chinese herbal medicine plant fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921690A (en) * | 2021-01-22 | 2021-06-08 | 高民 | Plant fiber with moisturizing function and preparation method thereof |
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2020
- 2020-07-15 CN CN202010682051.2A patent/CN111877041A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921690A (en) * | 2021-01-22 | 2021-06-08 | 高民 | Plant fiber with moisturizing function and preparation method thereof |
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