CN105038988A - Preparation method for tobacco coptis chinensis extract - Google Patents

Abstract

The invention discloses a preparation method of an extract of Coptidis Rhizoma used for smoking, which comprises the following steps: roasting, frying and pulverizing selected Coptidis Rhizoma, and filtering with a sieve; Carry out reflux extraction, separate and obtain extract a and residue b after the extraction is completed; add 4 to 12 times the ethanol aqueous solution corresponding to the weight of the residue to residue b and carry out reflux extraction, separate and obtain extract c and residue d after the extraction is completed; After the obtained extract a and extract c are mixed, coarse filtration is carried out with a sieve; the obtained Coptis rhizome crude filtrate is separated and treated with a ceramic membrane; Substance is Coptis chinensis extract. The advantages of the present invention are: the prepared Coptis chinensis extract for tobacco has vivid aroma, and spraying it on shredded tobacco to make cigarettes can increase the amount of aroma and the concentration of smoke, improve taste, and restore sweetness.

Description

A kind of preparation method of Coptidis rhizome extract for tobacco

technical field

The invention relates to the technical field of preparing an extract for tobacco, in particular to a preparation method of an extract of Coptidis rhizome for tobacco.

Background technique

Molecular distillation is a distillation method operated under high vacuum. At this time, the mean free path of vapor molecules is greater than the distance between the evaporation surface and the condensation surface, so that the difference in evaporation rate of each component in the feed liquid can be used to optimize the liquid mixture. to separate.

The short-path still consists of an externally heated vertical cylinder, a central condenser located in it, and a wiper that rotates between the still and the condenser. The distillation process is: the material is added from the top of the evaporator, and the material liquid distributor on the rotor distributes it continuously and evenly on the heating surface, and then the film scraper scrapes the material liquid into a very thin, turbulent liquid film , and advance downward in a spiral. During this process, the light molecules escaping from the heating surface condense into a liquid on the built-in condenser through a short route and almost without collision, and flow down the condenser tube through the discharge tube at the bottom of the evaporator Discharge; the residual liquid, that is, heavy molecules, is collected in the circular channel under the heating zone, and then flows out through the discharge pipe on the side.

Coptidis is a perennial herb belonging to the family Ranunculaceae and Coptis genus. The main components of Coptis chinensis are a variety of alkaloids, among which berberine has the highest content.

Coptidis is bitter and cold. GUIXIN, Spleen, Stomach, Liver, Gallbladder and Large Intestine Channel. It has the effects of clearing heat and dampness, detoxifying and venting fire, anti-cancer, hypoglycemic, and lipid-lowering. For damp and hot fullness, vomiting and acid regurgitation, diarrhea, jaundice, high fever and coma, hyperactivity of heart fire, upset and insomnia, vomiting of blood heat, red eyes, toothache, thirst, carbuncle and furuncle; external treatment of eczema, Eczema, ear canal discharge pus. The wine Coptis chinensis is scorched hot. For conjunctival congestion, aphtha. Turmeric is used to clear the stomach and stop vomiting. It is used for intertwining cold and heat, resistance to dampness and heat, fullness and vomiting. Yuhuanglian soothes the liver and stomach to stop vomiting. For liver and stomach disharmony, vomiting and regurgitation.

Coptis chinensis has various pharmacological effects such as anti-pathogenic microorganisms, anti-oxidation, anti-cancer, anti-inflammatory, anti-diarrhea, anti-ulcer, hypoglycemic and blood fat, improving digestive system, and improving cardiovascular and cerebrovascular diseases. Therefore, Coptis chinensis extract is a potential new spice for Chinese cigarettes. Because of its bitter taste, adding an appropriate amount of Coptis chinensis extract to tobacco can not only improve the taste, produce body fluid and restore sweetness, but also increase the aroma and smoke concentration. However, there are few reports on the application of Coptidis rhizome and its products in the field of flavor and fragrance for tobacco.

Contents of the invention

The purpose of the present invention is to provide a preparation method of Coptis rhizome extract for tobacco aiming at the gap in the prior art. In the method, firstly, the rhizoma coptis is roasted, pulverized, and filtered, and then the rhizome is subjected to secondary extraction, and finally the extract of the rhizome for smoking is obtained through filtering, separating, concentrating and molecular distillation. The Coptis chinensis extract for tobacco is applied to shredded tobacco, which can increase the amount of aroma and the concentration of smoke, improve the mouthfeel, and restore the sweetness of body fluid.

In order to achieve the above object, the technical solution provided by the present invention is a method for preparing an extract of Coptidis rhizome for tobacco, which is characterized in that it comprises the following steps:

(1) Material preparation: fry and crush the selected Coptis chinensis, filter through a 30-60 mesh screen, and set aside;

(2) One-time extraction: adding an aqueous ethanol solution corresponding to 4 to 12 times the weight of Coptis chinensis to the above-mentioned Coptis chinensis, followed by reflux extraction, and separating to obtain extract a and residue b after the extraction;

(3) Secondary extraction: adding an aqueous ethanol solution corresponding to 4 to 12 times the weight of the residue to the residue b, followed by reflux extraction, and separating to obtain the extract c and the residue d after the extraction;

(4) Coarse filtration: After mixing the obtained extract a and extract c, perform coarse filtration with a 160-200 mesh screen to obtain the Coptidis rhizome crude filtrate;

(5) Fine filtration: the obtained Coptis Rhizoma crude filtrate is separated and treated with a ceramic membrane with a pore size of 30-100 nm to obtain Coptis Rhizoma extract filtrate;

(6) Concentration: the obtained Coptidis rhizome extract filtrate is concentrated to obtain Coptidis rhizome concentrate;

(7) Molecular distillation: the obtained Coptidis rhizome concentrate is separated and purified by molecular distillation technology, and the obtained light molecular component is the extract of Coptidis rhizome for tobacco.

Preferably, the roasting temperature in the step (1) is 150-300° C., and the roasting time is 2-4 hours.

Preferably, the concentration of the ethanol aqueous solution used in the step (2) and the step (3) is both 40% to 80%.

Preferably, the extraction temperature in the extraction process in the step (2) and the step (3) is both 45-85° C., and the extraction time is 3-6 hours.

Preferably, the concentration temperature during the concentration treatment in the step (6) is 50-70°C, and the concentration vacuum is -0.07--0.1Mpa.

Preferably, the relative density of the Coptidis rhizome concentrate obtained in the step (6) is 1.05-1.15 g/cm ³ .

As preferably, the molecular distillation vacuum during molecular distillation in the step (7) is 45-65pa, the scraper speed is 400-500r/min, the distillation temperature is 60-120°C, and the feed rate is 1-2 drops /Second.

The beneficial effect of the present invention is reflected in that the prepared Coptis chinensis extract for tobacco has vivid aroma and good fluidity. Spray the diluted Coptis rhizome extract on the shredded tobacco to make cigarettes. It can increase the amount of aroma and smoke concentration, improve the taste, produce body fluid and return to sweetness. The application effect in cigarettes is very ideal.

Detailed ways

The present invention will be further described in detail below in conjunction with specific examples.

Example 1

Under the conditions of a roasting temperature of 180°C and a roasting time of 3.5 hours, the selected Coptis chinensis was roasted, crushed, and filtered through a 40-mesh sieve for later use. Put the above-mentioned Coptidis rhizome and 50% ethanol aqueous solution which is 6 times the weight of the above-mentioned Coptidis rhizome into the extraction tank for reflux extraction, the extraction temperature is 60°C, the extraction time is 4h, and the extraction liquid a1 and residue b1 are separated after the extraction is completed. Add 50% ethanol aqueous solution of 6 times the weight of residue b1 to residue b1, and carry out reflux extraction again, the extraction temperature is 60°C, and the extraction time is 4h. After the extraction is completed, extract c1 and residue d1 are separated. After the obtained extract a1 and extract c1 were mixed, coarse filtration was performed with a 160-mesh sieve to obtain a coarse filtrate of Coptis rhizome. The obtained coptis rhizome crude filtrate is separated and treated with a 30 nm ceramic membrane to obtain the coptis rhizome extract filtrate. The obtained Coptidis Rhizoma extract filtrate was concentrated at a temperature of 55° C. and a vacuum of -0.08 Mpa to obtain a Coptidis Rhizome concentrate with a relative density of 1.08 g/cm ³ . The obtained Coptis chinensis concentrate is separated and purified by molecular distillation technology. The molecular distillation vacuum is 62pa, the scraper speed is 480r/min, the distillation temperature is 60-120°C, and the feed rate is 1 drop/second. The component is the extract of Coptis chinensis for tobacco.

The Coptis chinensis extract for tobacco has vivid aroma and good fluidity. The diluted Coptidis rhizome extract for tobacco is sprayed on cut tobacco in proportion to make cigarettes. It can increase the amount of aroma and smoke concentration, improve the taste, produce body fluid and return to sweetness.

Example 2

Under the conditions of a roasting temperature of 200°C and a roasting time of 3 hours, the selected Coptis chinensis was roasted, crushed, and filtered through a 40-mesh sieve for later use. Put the above-mentioned Coptidis rhizome and 60% ethanol aqueous solution which is 6 times the weight of the above-mentioned Coptidis rhizome into the extraction tank for reflux extraction, the extraction temperature is 65°C, and the extraction time is 4h. After the extraction is completed, the extraction liquid a2 and the residue b2 are separated. Add 60% ethanol aqueous solution of 6 times the weight of the residue b2 to the residue b2, carry out reflux extraction again, the extraction temperature is 65° C., and the extraction time is 4 hours. After the extraction is completed, the extract c2 and the residue d2 are separated. After mixing the obtained extract a2 and extract c2, perform coarse filtration with a 180-mesh sieve to obtain a Coptis rhizome crude filtrate. The obtained coptis rhizome crude filtrate is separated and treated with a 30 nm ceramic membrane to obtain the coptis rhizome extract filtrate. The resulting Coptidis extract filtrate was concentrated at a temperature of 60° C. and a vacuum of -0.08 Mpa to obtain a Coptidis concentrate with a relative density of 1.08 g/cm ³ . The obtained Coptis chinensis concentrate is separated and purified by molecular distillation technology. The molecular distillation vacuum is 62pa, the scraper speed is 460r/min, the distillation temperature is 60-120°C, and the feed rate is 1 drop/second. The component is the extract of Coptis chinensis for tobacco.

The Coptis chinensis extract for tobacco has vivid aroma and good fluidity. The diluted Coptidis rhizome extract for tobacco is sprayed on cut tobacco in proportion to make cigarettes. It can increase the amount of aroma and smoke concentration, improve the taste, produce body fluid and return to sweetness.

Example 3

Under the condition that the roasting temperature is 250°C and the roasting time is 2.5 hours, the selected Coptis chinensis is roasted, crushed, and filtered through a 50-mesh screen for later use. Put the above-mentioned Coptidis rhizome and 70% ethanol aqueous solution which is 8 times the weight of the above-mentioned Coptidis rhizome into the extraction tank for reflux extraction, the extraction temperature is 70°C, the extraction time is 5h, and the extraction solution a3 and residue b3 are separated after the extraction is completed. Add 8 times the weight of residue b3 in 70% ethanol aqueous solution to residue b3, carry out reflux extraction again, extraction temperature is 70°C, extraction time is 5h, after extraction, separate and obtain extract c3 and residue d3. After mixing the obtained extract a3 and extract c3, perform coarse filtration with a 200-mesh sieve to obtain a Coptis rhizome crude filtrate. The obtained coptis rhizome crude filtrate is separated and treated with a 100 nm ceramic membrane to obtain the coptis rhizome extract filtrate. The obtained Coptidis Rhizoma extract filtrate was concentrated at a temperature of 65° C. and a vacuum of -0.09 Mpa to obtain a Coptidis Rhizoma concentrate with a relative density of 1.10 g/cm ³ . The obtained Coptidis rhizome concentrate was separated and purified by molecular distillation technology, the molecular distillation vacuum was 50pa, the scraper speed was 440r/min, the distillation temperature was 60-120°C, and the feed rate was 2 drops/second, the obtained light molecular components The product is Coptis chinensis extract.

The Coptis chinensis extract for tobacco has vivid aroma and good fluidity. The diluted Coptidis rhizome extract for tobacco is sprayed on cut tobacco in proportion to make cigarettes. It can increase the amount of aroma and smoke concentration, improve the taste, produce body fluid and return to sweetness.

Example 4

Under the condition that the roasting temperature is 280°C and the roasting time is 2.5 hours, the selected Coptidis Rhizome is roasted, crushed, and filtered through a 50-mesh sieve for later use. Put the above-mentioned Coptidis rhizome and 75% ethanol aqueous solution 10 times the weight of the above-mentioned Coptidis rhizome into the extraction tank for reflux extraction, the extraction temperature is 75°C, the extraction time is 5h, and the extraction solution a4 and residue b4 are separated after the extraction is completed. Add 10 times the weight of residue b4 in 75% ethanol aqueous solution to residue b4, and carry out reflux extraction again. The extraction temperature is 75° C., and the extraction time is 5 hours. After the extraction is completed, extract c4 and residue d4 are separated. After the obtained extract a4 and extract c4 were mixed, coarse filtration was performed with a 200-mesh sieve to obtain a Coptis rhizome crude filtrate. The obtained coptis rhizome crude filtrate is separated and treated with a 100 nm ceramic membrane to obtain the coptis rhizome extract filtrate. The obtained Coptidis Rhizoma extract filtrate was concentrated at a temperature of 68° C. and a vacuum of -0.09 Mpa to obtain a Coptidis Rhizome concentrate with a relative density of 1.12 g/cm ³ . The obtained Coptidis rhizome concentrate was separated and purified by molecular distillation technology, the vacuum degree of molecular distillation was 48pa, the speed of scraper was 420r/min, the distillation temperature was 60-120°C, and the feed rate was 2 drops/second, the obtained light molecular components The product is Coptis chinensis extract.

The Coptis chinensis extract for tobacco has vivid aroma and good fluidity. The diluted Coptidis rhizome extract for tobacco is sprayed on cut tobacco in proportion to make cigarettes. It can increase the amount of aroma and smoke concentration, improve the taste, produce body fluid and return to sweetness.

The above are all specific embodiments of the present invention. It should be pointed out that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention shall fall within the protection scope of the present invention.

Claims (7)

1. a preparation method for cigarette Rhizoma Coptidis extract, is characterized in that, comprises the following steps:

(1) get the raw materials ready: by selected coptis parch, pulverizing, and with after 30 ~ 60 object screen filtrations, for subsequent use;

(2) once extract: carry out refluxing extraction add the aqueous ethanolic solution of 4 ~ 12 times of corresponding coptis weight in the above-mentioned coptis after, extraction terminates rear separation and obtains extracting solution a and residue b;

(3) second extraction: carry out refluxing extraction add the aqueous ethanolic solution of 4 ~ 12 times of corresponding residue weight in residue b after, extraction terminates rear separation and obtains extracting solution c and residue d;

(4) coarse filtration: after gained extracting solution a and extracting solution c is mixed, carry out coarse filtration with 160 ~ 200 object screen clothes, obtain coptis coarse filtration liquid;

(5) essence filter: the ceramic membrane being 30 ~ 100nm by gained coptis coarse filtration liquid aperture carries out separating treatment, obtains the coptis and extracts filtrate;

(6) concentrated: the gained coptis to be extracted filtrate and carries out concentration, obtain coptis concentrated solution;

(7) molecular distillation: utilize molecular distillation technique to carry out separation and purification gained coptis concentrated solution, the light molecular components thing obtained is cigarette Rhizoma Coptidis extract.

2. the preparation method of a kind of cigarette Rhizoma Coptidis extract according to claim 1, is characterized in that: the parch temperature in described step (1) during parch is 150 ~ 300 DEG C, and the parch time is 2 ~ 4h.

3. the preparation method of a kind of cigarette Rhizoma Coptidis extract according to claim 1, is characterized in that: the concentration of described step (2) and the middle aqueous ethanolic solution used of step (3) is 40 ~ 80%.

4. the preparation method of a kind of cigarette Rhizoma Coptidis extract according to claim 1, is characterized in that: the Extracting temperature in described step (2) and step (3) in leaching process is 45 ~ 85 DEG C, and extraction time is 3 ~ 6h.

5. the preparation method of a kind of cigarette Rhizoma Coptidis extract according to claim 1, is characterized in that: thickening temperature when carrying out concentration in described step (6) is 50 ~ 70 DEG C, and concentrated vacuum tightness is-0.07 ~-0.1Mpa.

6. the preparation method of a kind of cigarette Rhizoma Coptidis extract according to claim 1, is characterized in that: the relative density of the coptis concentrated solution obtained in described step (6) is 1.05 ~ 1.15g/cm ³.

7. the preparation method of a kind of cigarette Rhizoma Coptidis extract according to claim 1, it is characterized in that: molecular distillation vacuum tightness when carrying out molecular distillation in described step (7) is 45 ~ 65pa, scraper plate rotating speed is 400 ~ 500r/min, distillation temperature is 60 ~ 120 DEG C, and input speed is 1 ~ 2 drop/sec.