CN105132178A - Preparation method of broad bean flower extract liquid for tobacco - Google Patents

Abstract

The invention relates to a method for preparing an extract of broad bean flower for tobacco. The preparation method comprises the following steps: drying and pulverizing commercially available broad bean flower medicinal material, and then sieving for later use; using citric acid aqueous solution as an extraction solvent, under certain conditions The broad bean flower powder is leached, and the residue is filtered to obtain the primary extract of the broad bean flower; the primary extract of the broad bean flower is subjected to alcohol precipitation, ceramic membrane filtration, and concentration under reduced pressure to obtain the broad bean flower extract for tobacco of the present invention. In the present invention, the broad bean flower extract is developed and utilized as a tobacco additive for the first time, which has the advantages of simple operation, economical and practical, and easy production and transformation. Adding the broad bean flower extract to shredded tobacco or filters not only has the effect of obviously improving the smoking quality of cigarettes The application effect can also reduce the harm of smoking to the human body, and has a potential harm reduction effect.

Description

A kind of preparation method of tobacco broad bean flower extract

technical field

The invention relates to the technical field of cigarette essence and fragrance, in particular to a preparation method of broad bean flower extract for tobacco.

Background technique

With the development of low-tar cigarettes, the aroma of cigarette products is filtered and diluted, which will inevitably cause a large loss of aroma, which is difficult to meet the needs of consumers. At the same time, there are problems such as dry smoke, increased irritation, and reduced throat comfort. Affects the style and smoking quality of cigarettes. A challenging problem facing the tobacco industry is to reduce tar while maintaining sufficient flavor and comfortable smoking taste in cigarettes. At present, while many cigarette factories carefully deploy cigarette formulas, most of them adopt the method of adding various flavor enhancers and corrective agents to make up for the defects of cigarette fragrance and taste. Natural plant flavors have the advantages of rich raw material resources, natural and comfortable aroma, and do not contain chemical synthetic additives, which meet people's call for "green, ecological, and natural". Adding it to shredded tobacco or filters as a cigarette additive, most of which can coordinate with the original flavor of tobacco, can better improve the smoking quality of cigarettes, and has become an important topic in the research of flavor compensation technology for Chinese cigarettes.

According to literature reports, mainstream smoke contains alkoxy free radicals, alkyl free radicals, quinone/semiquinone free radicals, polyaromatic free radicals and other components during smoking, which can directly or indirectly attack and damage cells, and can cause various It is considered to be the most harmful toxic substance in the process of smoking cigarettes. As the public pays more and more attention to smoking and health issues, reducing the free radical content in cigarette smoke has become one of the focuses of tobacco science and technology workers. The development and utilization of efficient and non-toxic free radical scavengers is the future development of cigarette products trend.

Broad bean flower is the dried flower of broad bean, a leguminous plant. It is a traditional folk Chinese medicinal material. It is mainly produced in Jiangsu, Zhejiang, Anhui, Sichuan and other places. It is harvested, dried or dried when broad bean blooms around Qingming Festival. "Suzhou native medicinal materials" believes that broad bean flowers are "sweet and flat", "Sichuan Traditional Chinese Medicine" records that broad bean flowers are "flat in nature, astringent, and non-toxic", and "Shanghai Commonly Used Chinese Herbal Medicine" records that broad bean flowers are "slightly sweet and flat". Broad bean flower has medicinal effects such as cooling blood and stopping bleeding. It is mainly used to treat hemoptysis, epistaxis, bloody dysentery, leukorrhea, and hypertension. Studies have shown that broad bean flowers contain various active ingredients such as levodopa, amino acids, triterpenoid saponins, anthocyanins, flavonoids, etc., and the content of levodopa can reach up to 11.83%, which is currently the raw material for extracting levodopa. (5～7%) about 2 times, has very high medical utilization value. Levodopa is a specific drug for the treatment of Parkinson's disease and plays an important role in the clinical application of Parkinson's disease. Triterpene saponins, anthocyanins, flavonoids, etc. have the effect of eliminating free radicals in the body. Although broad bean flower contains a large amount of bioactive substances, there is currently no patent report on the application of broad bean flower extract to the field of tobacco.

Contents of the invention

The purpose of the present invention is to fill up the current technical gap regarding the extract of broad bean flower as a tobacco additive to improve the smoking quality of cigarettes, and provide an economical, practical, and simple process for preparing the extract of broad bean flower. The extract of broad bean flower is added to shredded tobacco or In the filter tip, it can endow the cigarette with a comfortable and elegant fragrance style, and it is more coordinated with the smoke aroma. It has the application effect of improving the quality of cigarette smoking, such as enhancing the aroma, soft and delicate smoke, reducing irritation, and making the mouth comfortable and pure. At the same time, it extracts The medicine contains levodopa, triterpenoid saponins, anthocyanins, flavonoids and other biologically active substances, which can reduce the harm of smoking to the human body and have a potential harm reduction effect.

To achieve the above object, the present invention takes the following technical solutions:

A method for preparing an extract of broad bean flower for tobacco, characterized in that: the method for preparing the extract of broad bean flower for tobacco comprises the following steps:

A. Dry and pulverize the commercially available broad bean flower medicinal material and pass through a 60-120 mesh screen to obtain broad bean flower powder;

B. Extract broad bean flower powder and citric acid aqueous solution at a material-to-liquid ratio of 1:15 to 30 at a temperature of 80 to 100°C for 2 to 5 hours, and filter to remove the residue to obtain the broad bean flower primary extract;

C. Concentrate the initial extract of broad bean flower in step B to a solid content of 25-35%, add 95% ethanol solution, stir evenly, and set aside for 16-24 hours at 4°C for alcohol precipitation, and then use a ceramic membrane to filter, Concentrate the filtrate under reduced pressure until there is no ethanol smell to obtain the broad bean flower extract for tobacco use.

The pH of the citric acid aqueous solution in the step B is 4.0-6.0.

The alcohol precipitation condition in the step C is preferably such that the volume fraction of ethanol in the system reaches 60-80% after mixing evenly.

The pore size of the ceramic membrane in step C is preferably 0.1-0.5 μm.

An application scheme of the present invention refers to applying the broad bean flower extract to shredded tobacco by spraying at an additive amount of 0.1-0.5%, and rolling cigarettes according to a conventional process.

Another application scheme of the present invention refers to dispersing the broad bean flower extract in 95% alcohol solution, then spraying it into the loose acetate tow, and making a filter according to the tow forming process, and the broad bean flower extract The added amount is preferably 1 to 5 mg/cartridge.

The advantages of the present invention are:

(1) The present invention uses aqueous solution of citric acid as the extraction solvent to fully extract the active ingredients in the broad bean flower in an acidic environment. The pungent and stimulating effect of tobacco.

(2) On the basis of solvent leaching, the present invention uses alcohol precipitation and ceramic membrane filtration technology to carry out subsequent separation and purification of the primary extract of broad bean flower to remove cellulose, pigment, protein and other substances that have a negative effect on cigarette smoking, and improve Application effect of extract in cigarette.

(3) In the present invention, the broad bean flower extract is developed and utilized as a tobacco additive for the first time, which has the advantages of simple process, economical and practical, easy production and transformation, and no toxic and harmful solvents are used in the preparation process. Adding broad bean flower extract to shredded tobacco or filter tip not only has the effect of obviously improving the smoking quality of cigarettes, but also can reduce the harm of smoking to human body, and has a potential harm reduction effect.

Detailed ways

In order to better understand the technical solution of the present invention, the technical solution provided by the present invention will be described in detail below in conjunction with examples.

A method for preparing an extract of broad bean flower for tobacco, characterized in that: the method for preparing the extract of broad bean flower for tobacco comprises the following steps:

A. Dry and pulverize the commercially available broad bean flower medicinal material and pass through a 60-120 mesh screen to obtain broad bean flower powder;

B. Extract broad bean flower powder and citric acid aqueous solution at a material-to-liquid ratio of 1:15 to 30 at a temperature of 80 to 100°C for 2 to 5 hours, and filter to remove the residue to obtain the broad bean flower primary extract;

C. Concentrate the initial extract of broad bean flower in step B to a solid content of 25-35%, add 95% ethanol solution, stir evenly, and set aside for 16-24 hours at 4°C for alcohol precipitation, and then use a ceramic membrane to filter, Concentrate the filtrate under reduced pressure until there is no ethanol smell to obtain the broad bean flower extract for tobacco use.

The pH of the citric acid aqueous solution in the step B is 4.0-6.0.

The alcohol precipitation condition in the step C is preferably such that the volume fraction of ethanol in the system reaches 60-80% after mixing evenly.

The pore size of the ceramic membrane in step C is preferably 0.1-0.5 μm.

An application scheme of the present invention refers to applying the broad bean flower extract to shredded tobacco by spraying at an additive amount of 0.1-0.5%, and rolling cigarettes according to a conventional process.

Another application scheme of the present invention refers to dispersing the broad bean flower extract in 95% alcohol solution, then spraying it into the loose acetate tow, and making a filter according to the tow forming process, and the broad bean flower extract The added amount is preferably 1 to 5 mg/cartridge.

Example 1

A. The broad bean flower medicinal material available in the market is dried and pulverized, and passed through a 100-mesh sieve to obtain broad bean flower powder.

B. Use citric acid aqueous solution with a pH of 5.0 as the extraction solvent, put broad bean flower powder and citric acid aqueous solution into an extraction container according to the ratio of solid to liquid 1:30, extract at a temperature of 90°C for 3 hours, and filter to remove the residue to obtain broad bean Flower initial extract.

C. Concentrate the initial extract of broad bean flower in step B to a solid content of 25%, add 95% ethanol so that the volume fraction of ethanol reaches 70% after the system is evenly mixed, and stand at 4°C for 16h to carry out alcohol precipitation. Then select a 0.5 μm ceramic membrane for filtration treatment, and concentrate the filtrate under reduced pressure until it has no ethanol smell, which is the broad bean flower extract of the present invention.

Example 2

A. Drying and pulverizing the commercially available broad bean flower medicinal material and passing through a 120-mesh sieve to obtain broad bean flower powder.

B. Use citric acid aqueous solution with a pH of 6.0 as the extraction solvent, put broad bean flower powder and citric acid aqueous solution into an extraction container according to the ratio of solid to liquid 1:25, extract at a temperature of 100°C for 3 hours, and filter to remove the residue to obtain broad bean Flower initial extract.

C. Concentrate the initial extract of broad bean flower in step B to a solid content of 35%, add 95% ethanol so that the volume fraction of ethanol reaches 80% after the system is evenly mixed, and stand at 4°C for 18h for alcohol precipitation. Then select a 0.4 μm ceramic membrane for filtration treatment, and concentrate the filtrate under reduced pressure until it has no ethanol smell, which is the broad bean flower extract of the present invention.

Example 3

A. Drying and pulverizing the commercially available broad bean flower medicinal material and passing through an 80-mesh sieve to obtain broad bean flower powder.

B. Use citric acid aqueous solution with a pH of 4.0 as the extraction solvent, put broad bean flower powder and citric acid aqueous solution into an extraction container according to the ratio of solid to liquid 1:15, extract at a temperature of 90°C for 4 hours, and filter to remove the residue to obtain broad bean Flower initial extract.

C. Concentrate the initial extract of broad bean flower in step B to a solid content of 30%, add 95% ethanol so that the volume fraction of ethanol reaches 60% after the system is uniformly mixed, and stand at 4°C for 20h to carry out alcohol precipitation. Then select a 0.1 μm ceramic membrane for filtration, and concentrate the filtrate under reduced pressure until it has no ethanol smell, which is the broad bean flower extract of the present invention.

Example 4

A. Drying and pulverizing commercially available broad bean flower medicinal materials and passing through a 60-mesh sieve to obtain broad bean flower powder.

B. Use citric acid aqueous solution with a pH of 4.5 as the extraction solvent, put broad bean flower powder and citric acid aqueous solution into an extraction container according to the ratio of solid to liquid 1:25, extract at a temperature of 95°C for 3 hours, and filter to remove the residue to obtain broad bean Flower initial extract.

C. Concentrate the initial extract of broad bean flower in step B to a solid content of 35%, add 95% ethanol so that the volume fraction of ethanol reaches 75% after the system is evenly mixed, and stand at 4°C for 24h to carry out alcohol precipitation. Then select a 0.2 μm ceramic membrane for filtration treatment, and concentrate the filtrate under reduced pressure until it has no ethanol smell, which is the broad bean flower extract of the present invention.

Example 5

After diluting the broad bean flower extract obtained in Examples 1 to 4 of the present invention with 95% alcohol, apply it to Yellow Crane Tower "soft blue" blank shredded tobacco by spraying. Conventional technology rolling cigarettes. Put the cigarettes into a constant temperature and humidity chamber with a temperature of 21°C to 23°C and a relative humidity (RH) of 58% to 62% to balance for 48 hours, and then ask an expert smoking group to evaluate smoking. The control group was cigarettes rolled with Yellow Crane Tower "soft blue" blank cut tobacco. From the results of sensory evaluation, it can be seen that adding broad bean flower extract to cigarette shreds can give cigarettes a comfortable and elegant fragrance style, which is more harmonious with the aroma of cigarettes, improves the aroma texture, makes the smoke softer and more delicate, and reduces irritation , the oral cavity is comfortable and pure, and has the effect of improving the smoking quality and sensory comfort of cigarettes.

Example 6

The broad bean flower extract prepared in Examples 1 to 4 of the present invention is dispersed in 95% alcohol solution, then sprayed into the loose acetate tow, and the filter tip is made according to the tow forming process, and the broad bean flower extract is The added amount is 1-5mg/cigarette, and then rolled into a test sample cigarette, and the filter tip without adding the broad bean flower extract is used as a blank control. After the cigarettes have been balanced, select cigarettes with similar average quality and average draw resistance, and ask the expert smoking group to evaluate the smoking. The results of the sensory evaluation show that adding the broad bean flower extract to the cigarette filter at a ratio of 1 to 5 mg/cigarette has basically the same application effect as that of Example 5 when it is directly added to shredded tobacco, and can significantly improve the smoking quality of cigarettes. With the effect of sensory comfort, you can experience a comfortable and elegant fragrance style when smoking, and it is more coordinated with the aroma of cigarettes. The smoke is soft and delicate, with less irritation, and the mouth is comfortable and pure.

In order to verify whether the broad bean flower extract has the effect of reducing the generation of harmful substances in the smoking process of cigarettes, the present invention takes the cigarette with the filter tip added with the broad bean flower extract as the investigation object, and adopts a smoke collector and electron spin resonance spectroscopy The method was used to analyze and detect the scavenging effect of broad bean flower extract on free radical content in mainstream cigarette smoke. The results are shown in Table 1. The results show that adding the product prepared by the invention to the cigarette filter material has the effect of removing the free radical content in the mainstream smoke of the cigarette without affecting the smoking quality of the cigarette.

Table 1 The scavenging effect of products on free radical content in mainstream cigarette smoke

Note: +, free radical content increased; -, free radical content decreased

The advantages of the present invention are:

(1) The present invention uses aqueous solution of citric acid as the extraction solvent to fully extract the active ingredients in the broad bean flower in an acidic environment. The pungent and stimulating effect of tobacco.

(2) On the basis of solvent leaching, the present invention uses alcohol precipitation and ceramic membrane filtration technology to carry out subsequent separation and purification of the primary extract of broad bean flower to remove cellulose, pigment, protein and other substances that have a negative effect on cigarette smoking, and improve Application effect of extract in cigarette.

(3) In the present invention, the broad bean flower extract is developed and utilized as a tobacco additive for the first time, which has the advantages of simple process, economical and practical, easy production and transformation, and no toxic and harmful solvents are used in the preparation process. Adding broad bean flower extract to shredded tobacco or filter tip not only has the effect of obviously improving the smoking quality of cigarettes, but also can reduce the harm of smoking to human body, and has a potential harm reduction effect.

The above is only a detailed description of specific embodiments of the present invention, and does not limit the present invention. Any modifications, equivalent replacements and improvements made on the design ideas of the present invention should be included in the protection of the present invention. within range.

Claims (4)

1. a cigarette preparation method for flower of Broadbean extracting solution, is characterized in that: the preparation method of flower of Broadbean extracting solution comprises the steps: described cigarette

A. cross 60 ~ 120 eye mesh screens by after commercially available flower of Broadbean medicinal material drying, pulverizing, obtain flower of Broadbean powder;

B. by flower of Broadbean powder and aqueous citric acid solution according to solid-liquid ratio 1:15 ~ 30, lixiviate 2 ~ 5h under temperature 80 ~ 100 DEG C of conditions, crosses and filters residue and obtain flower of Broadbean just extract;

C. first for flower of Broadbean in step B extract being evaporated to solid content is 25 ~ 35%, add 95% ethanolic soln, after stirring, at 4 DEG C, alcohol precipitation leaves standstill 16 ~ 24h, then uses ceramic membrane filter, concentrate filtrate to without ethanol taste, obtain described cigarette flower of Broadbean extracting solution.

2. a kind of cigarette preparation method of flower of Broadbean extracting solution according to claim 1, is characterized in that: in described step B, the pH of aqueous citric acid solution is 4.0 ~ 6.0.

3. a kind of cigarette preparation method of flower of Broadbean extracting solution according to claim 1, is characterized in that: in described step C, alcohol precipitation condition optimization is that the volume fraction mixing rear system ethanol reaches 60 ~ 80%.

4. a kind of cigarette preparation method of flower of Broadbean extracting solution according to claim 1, is characterized in that: the pore size of described step C ceramic membrane is preferably 0.1 ~ 0.5 μm.