CN111544923A - Preparation method of snow pear extract for cigarettes - Google Patents
Preparation method of snow pear extract for cigarettes Download PDFInfo
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- CN111544923A CN111544923A CN202010382475.7A CN202010382475A CN111544923A CN 111544923 A CN111544923 A CN 111544923A CN 202010382475 A CN202010382475 A CN 202010382475A CN 111544923 A CN111544923 A CN 111544923A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0288—Applications, solvents
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
- C11B9/025—Recovery by solvent extraction
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Abstract
The invention belongs to the technical field of flavors and fragrances, and provides a preparation method of a snow pear extract for cigarettes, which comprises the following steps: A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and performing dehydration treatment to obtain a snow pear pretreatment substance; the pretreating agent is prepared from the following components in a mass ratio of 1-2: 7, ascorbyl palmitate and sorbitol; B. taking half of the mass of the snow pear pretreatment, extracting with ethanol with the volume fraction of 60%, filtering, and concentrating to obtain a first extract; C. taking the other half of the snow pear pretreatment substance by mass, leaching with ethyl propionate, filtering, and concentrating to obtain a second extract; D. and mixing the first extract and the second extract to obtain the snow pear extract for cigarettes. By adopting the technical scheme, the problems of low content of flavonoid compounds and low extraction rate in the snow pear extract obtained by the extraction method in the prior art are solved.
Description
Technical Field
The invention belongs to the technical field of flavors and fragrances, and relates to a preparation method of a snow pear extract for cigarettes.
Background
The snow pear belongs to the white pear system, and the main producing areas are provinces such as Hebei, Shandong, Liaoning, Hubei, Jiangsu, Anhui, Sichuan and Gansu, wherein Zhao county snow pear is a good variety. The cultivation history of the snow pears in Zhao county is long and can be traced to more than two thousand years ago. The snow pear is named after being white like jade, frost like snow, and carries the saying of big like a fist, sweet like honey, crisp like a water chestnut, and the fruit is big, round, thin in skin, thick in meat, good in color, rich in juice, fragrant and sweet in taste, and is famous all over the world with Zhao Zuoqiao. The snow pear can be used as raw material for edible or health-care products, such as canned food, pear juice, pear paste, preserved pear, pear wine and other health-care foods with various flavors, and also can be used for medical treatment, and has the medical effects of promoting the production of body fluid, moistening dryness, clearing away heat and toxic materials, reducing phlegm and relieving cough.
The snow pear contains rich sugar, organic acid, potassium, nitrogen, iron and other mineral substances, and also contains rich phenolic substances, mainly phenolic acids and flavone compounds such as arbutin, chlorogenic acid, catechin and the like, and the extract containing the flavone compounds has the effect of softening smoke and reducing stimulation when being used in cigarettes, so the snow pear extract can be used for preparing cigarette essence. However, the existing snow pear extract is usually extracted by 95% ethanol, and the obtained snow pear extract has low content of flavonoid compounds and low extraction rate.
Disclosure of Invention
The invention provides a preparation method of a snow pear extract for cigarettes, and solves the problems of low content of flavonoid compounds and low extraction rate of the snow pear extract obtained by the extraction method in the prior art.
The technical scheme of the invention is realized as follows:
a preparation method of a snow pear extract for cigarettes comprises the following steps:
A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and performing dehydration treatment to obtain a snow pear pretreatment substance;
the pretreating agent is prepared from the following components in a mass ratio of 1-2: 7, ascorbyl palmitate and sorbitol;
B. taking half of the mass of the snow pear pretreatment, extracting with ethanol with the volume fraction of 60%, filtering, and concentrating to obtain a first extract;
C. taking the other half of the snow pear pretreatment substance by mass, leaching with ethyl propionate, filtering, and concentrating to obtain a second extract;
D. and mixing the first extract and the second extract to obtain the snow pear extract for cigarettes.
As a further technical scheme, the dehydration treatment in the step A is carried out until the moisture content in the obtained snow pear treated substance is less than or equal to 2 percent.
As a further technical scheme, the dosage of the pretreating agent in the step A is 2-5% of the mass of the snow pear.
As a further technical scheme, in the step B, C, the leaching temperature is 45-60 ℃, and the leaching time is 1-1.5 hours.
As a further technical scheme, the concentration in the step B is carried out until the relative density is 1.2720-1.2880.
As a further technical scheme, the concentration in the step C is carried out until the relative density is 1.2720-1.2880.
According to a further technical scheme, the using amount of the ethanol is 3-4 times of the quality of the snow pear pretreatment, and the using amount of the ethyl propionate is 3-4 times of the quality of the snow pear pretreatment.
As a further technical scheme, in the step D, the mass ratio of the first extract to the second extract is 1: 1 and mixing.
The working principle and the beneficial effects of the invention are as follows:
1. according to the invention, the pretreatment agent and the snow pear are pulped and then dehydrated to obtain the snow pear pretreatment substance, and then the snow pear pretreatment substance is extracted, wherein the ascorbic acid palmitate and the sorbitol in the pretreatment agent are compatible with each other, so that the extraction rate of the tobacco yellow pear extract is obviously improved, the content of the flavonoid compounds in the tobacco yellow pear extract is also obviously improved, and the problems of low content and low extraction rate of the flavonoid compounds in the snow pear extract obtained by the extraction method in the prior art are effectively solved.
2. According to the invention, through optimizing and improving the preparation method, the temperature of each step is controlled to be in a low-temperature state within 60 ℃, so that the cracking reaction of aroma components in the snow pears at high temperature is avoided, the aroma in the snow pears can be completely reserved, the prepared snow pear extract for cigarettes has few impurities and no miscellaneous gas after combustion, the prepared snow pear extract for cigarettes has sweet and sour aroma, and when the prepared snow pear extract for cigarettes is added into tobacco shreds, the dry feeling and aroma of the oral cavity are obviously improved, and the miscellaneous gas and throat stimulation of the tobacco shreds are improved to a certain extent, so that the snow pear extract for cigarettes is suitable for being used as an essence perfume for cigarettes.
3. According to the preparation method of the cigarette snow pear extract, dehydration treatment is carried out firstly, water content is controlled to be below 2%, then extraction treatment is carried out, the water content of the cigarette snow pear extract is reduced, the content of water-soluble non-aroma components in the cigarette snow pear extract is reduced, ethanol with the volume fraction of 60% is used for extraction, compared with the existing production method that 95% ethanol is used for extraction, the extraction efficiency is higher, and meanwhile the problem that when the distillation temperature is higher than 80 ℃ during alcohol separation, various cracking reactions of the aroma components in the snow pear extract are caused, and impurities in products are more is avoided, so that the aroma component content of the cigarette snow pear extract is higher, and the evaluation effect when the cigarette snow pear extract is applied to tobacco shreds is better.
4. According to the preparation method, the extracts obtained by ethanol extraction and ethyl propionate extraction are mixed to obtain the cigarette snow pear extract, so that the prepared cigarette snow pear extract has the head fragrance of snow pears and the natural fragrance of snow pear pulp, and is better in purity, so that the prepared cigarette xu-Hua extract is used in tobacco shreds, the tobacco shreds are full and fine, free of miscellaneous gas and irritation, good in harmony with the tobacco fragrance, and good in mouth moistening effect, and the aftertaste is rich in body fluid and sweet and comfortable.
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 1
A preparation method of a snow pear extract for cigarettes comprises the following steps:
A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and dehydrating until the water content is less than or equal to 2% to obtain a snow pear pretreatment substance;
the pretreating agent is prepared from the following components in a mass ratio of 1: 7, ascorbyl palmitate and sorbitol; the using amount of the pretreating agent is 2 percent of the mass of the snow pear;
B. taking half mass of snow pear pretreatment, leaching with 60% ethanol at 45 deg.C for 1.5 hr, cooling, filtering, and concentrating to relative density of 1.2800 to obtain a first extract; the dosage of the ethanol is 4 times of the mass of the snow pear pretreatment substance;
C. leaching the other half of the snow pear pretreatment substance with ethyl propionate at 45 deg.C for 1.5 hr, cooling, filtering, and concentrating to relative density of 1.2800 to obtain a second extract; the using amount of the ethyl propionate is 3 times of the mass of the snow pear pretreatment substance;
D. mixing the first extract and the second extract according to a mass ratio of 1: 1, mixing to obtain the snow pear extract for cigarettes.
Example 2
A preparation method of a snow pear extract for cigarettes comprises the following steps:
A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and dehydrating until the water content is less than or equal to 2% to obtain a snow pear pretreatment substance;
the pretreating agent comprises the following components in percentage by mass of 2: 7, ascorbyl palmitate and sorbitol; the using amount of the pretreating agent is 5 percent of the mass of the snow pear;
B. taking half mass of snow pear pretreatment, leaching with 60% ethanol at 60 deg.C for 1 hr, cooling, filtering, and concentrating to relative density of 1.2880 to obtain a first extract; the dosage of the ethanol is 4 times of the mass of the snow pear pretreatment substance;
C. leaching the other half of the snow pear pretreatment substance with ethyl propionate at 60 deg.C for 1 hr, cooling, filtering, and concentrating to relative density of 1.2880 to obtain a second extract; the using amount of the ethyl propionate is 4 times of the mass of the snow pear pretreatment substance;
D. mixing the first extract and the second extract according to a mass ratio of 1: 1, mixing to obtain the snow pear extract for cigarettes.
Example 3
A preparation method of a snow pear extract for cigarettes comprises the following steps:
A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and dehydrating until the water content is less than or equal to 2% to obtain a snow pear pretreatment substance;
the pretreating agent is prepared from the following components in a mass ratio of 1: 7, ascorbyl palmitate and sorbitol; the using amount of the pretreating agent is 3 percent of the mass of the snow pear;
B. taking half mass of snow pear pretreatment, leaching with 60% ethanol at 50 deg.C for 1.2 hr, cooling, filtering, and concentrating to relative density of 1.2720 to obtain a first extract; the dosage of the ethanol is 3.5 times of the mass of the snow pear pretreatment substance;
C. leaching the other half of the snow pear pretreatment substance with ethyl propionate at 50 deg.C for 1.3 hr, cooling, filtering, and concentrating to relative density of 1.2720 to obtain a second extract; the using amount of the ethyl propionate is 3.5 times of the mass of the snow pear pretreatment substance;
D. mixing the first extract and the second extract according to a mass ratio of 1: 1, mixing to obtain the snow pear extract for cigarettes.
Example 4
A preparation method of a snow pear extract for cigarettes comprises the following steps:
A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and dehydrating until the water content is less than or equal to 2% to obtain a snow pear pretreatment substance;
the pretreating agent is prepared from the following components in a mass ratio of 1: 7, ascorbyl palmitate and sorbitol; the using amount of the pretreating agent is 4 percent of the mass of the snow pear;
B. taking half mass of snow pear pretreatment, leaching with 60% ethanol at 50 deg.C for 1.5 hr, cooling, filtering, and concentrating to relative density of 1.2850 to obtain a first extract; the dosage of the ethanol is 4 times of the mass of the snow pear pretreatment substance;
C. leaching the other half of the snow pear pretreatment substance with ethyl propionate at 60 deg.C for 1.5 hr, cooling, filtering, and concentrating to relative density of 1.2850 to obtain a second extract; the using amount of the ethyl propionate is 4 times of the mass of the snow pear pretreatment substance;
D. mixing the first extract and the second extract according to a mass ratio of 1: 1, mixing to obtain the snow pear extract for cigarettes.
Example 5
A preparation method of a snow pear extract for cigarettes comprises the following steps:
A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and dehydrating until the water content is less than or equal to 2% to obtain a snow pear pretreatment substance;
the pretreating agent is prepared from the following components in a mass ratio of 1: 7, ascorbyl palmitate and sorbitol; the using amount of the pretreating agent is 4 percent of the mass of the snow pear;
B. taking half mass of snow pear pretreatment, leaching with 60% ethanol at 60 deg.C for 1.5 hr, cooling, filtering, and concentrating to relative density of 1.2800 to obtain a first extract; the dosage of the ethanol is 3 times of the mass of the snow pear pretreatment substance;
C. leaching the other half of the snow pear pretreatment substance with ethyl propionate at 45 deg.C for 1.5 hr, cooling, filtering, and concentrating to relative density of 1.2800 to obtain a second extract; the using amount of the ethyl propionate is 3 times of the mass of the snow pear pretreatment substance;
D. mixing the first extract and the second extract according to a mass ratio of 1: 1, mixing to obtain the snow pear extract for cigarettes.
Example 6
A preparation method of a snow pear extract for cigarettes comprises the following steps:
A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and dehydrating until the water content is less than or equal to 2% to obtain a snow pear pretreatment substance;
the pretreating agent is prepared from the following components in a mass ratio of 1: 7, ascorbyl palmitate and sorbitol; the using amount of the pretreating agent is 5 percent of the mass of the snow pear;
B. taking half mass of snow pear pretreatment, leaching with 60% ethanol at 45 deg.C for 1.5 hr, cooling, filtering, and concentrating to relative density of 1.2880 to obtain a first extract; the dosage of the ethanol is 3 times of the mass of the snow pear pretreatment substance;
C. leaching the other half of the snow pear pretreatment substance with ethyl propionate at 60 deg.C for 1 hr, cooling, filtering, and concentrating to relative density of 1.2820 to obtain a second extract; the using amount of the ethyl propionate is 4 times of the mass of the snow pear pretreatment substance;
D. mixing the first extract and the second extract according to a mass ratio of 1: 1, mixing to obtain the snow pear extract for cigarettes.
Example 7
A preparation method of a snow pear extract for cigarettes comprises the following steps:
A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and dehydrating until the water content is less than or equal to 2% to obtain a snow pear pretreatment substance;
the pretreating agent is prepared from the following components in a mass ratio of 1: 7, ascorbyl palmitate and sorbitol; the using amount of the pretreating agent is 3 percent of the mass of the snow pear;
B. taking half mass of snow pear pretreatment, leaching with 60% ethanol at 50 deg.C for 1.3 hr, cooling, filtering, and concentrating to relative density of 1.2850 to obtain a first extract; the dosage of the ethanol is 3 times of the mass of the snow pear pretreatment substance;
C. leaching the other half of the snow pear pretreatment substance with ethyl propionate at 50 deg.C for 1.3 hr, cooling, filtering, and concentrating to relative density of 1.2720 to obtain a second extract; the using amount of the ethyl propionate is 3 times of the mass of the snow pear pretreatment substance;
D. mixing the first extract and the second extract according to a mass ratio of 1: 1, mixing to obtain the snow pear extract for cigarettes.
Comparative example 1
This comparative example differs from example 1 only in that no pretreatment agent was added in step a.
Comparative example 2
This comparative example differs from example 1 only in that the pretreatment agent in step a is ascorbyl palmitate.
Comparative example 3
This comparative example differs from example 1 only in that the pretreatment agent in step a is sorbitol.
Comparative example 4
This comparative example differs from example 1 only in that no dehydration treatment was performed in step a.
Comparative example 5
The preparation method of the snow pear extract for cigarettes in the comparative example comprises the following steps: cleaning snow pears, peeling, removing kernels, cutting into blocks and pulping to obtain a snow pear pretreatment substance; extracting the snow pear pretreatment substance with ethanol with volume fraction of 95% 5 times of the mass of the snow pear pretreatment substance at 45 ℃ for 2 hours, cooling, filtering, and concentrating to relative density of 1.2800 to obtain the snow pear extract for cigarettes.
Comparative example 6
The preparation method of the snow pear extract for cigarettes in the comparative example comprises the following steps: cleaning snow pears, peeling, removing kernels, cutting into blocks and pulping to obtain a snow pear pretreatment substance; and (3) leaching the snow pear pretreatment substance by using 5 times of ethanol with volume fraction of 60% in an aqueous bath at 75 ℃ for 2 hours, cooling, filtering, and concentrating to relative density of 1.2800 to obtain the snow pear extract for cigarettes.
Comparative example 7
The preparation method of the snow pear extract for cigarettes in the comparative example comprises the following steps: cleaning snow pears, peeling, removing kernels, cutting into blocks and pulping to obtain a snow pear pretreatment substance; the snow pear pretreatment substance is soaked and extracted by ethyl propionate with the mass of 5 times of that of the snow pear pretreatment substance for 1.5 hours at the temperature of 45 ℃, and the snow pear pretreatment substance is filtered after being cooled and concentrated to the relative density of 1.2800, so that the snow pear extract for cigarettes is obtained.
The snow pears used in the preparation methods of examples 1 to 7 and comparative examples 1 to 7 and the obtained snow pear extracts for cigarettes were weighed, and the extraction rate was calculated according to the following formula:
the extraction rate (%) (mass of snow pear extract for cigarette/mass of snow pear) x 100;
the content of flavonoids (total flavonoids) in the cigarette snow pear extracts obtained in examples 1 to 7 and comparative examples 1 to 3 was determined by using rutin as a control and rutin Y as a standard curve of 0.0011X +0.0205(R as 0.9996), and the determination results are shown in the following table:
TABLE 1 snow pear extract for cigarette in examples 1-7 and comparative examples 1-3, extraction rate and total flavone content in the extract
As can be seen from the data in the table 1, compared with the methods in the comparative examples 1 to 3, the preparation methods in the examples 1 to 7 not only improve the extraction rate of the tobacco yellow pear extract, but also obviously improve the content of total flavonoids in the tobacco yellow pear extract, and effectively solve the problems of low content of flavonoid compounds and low extraction rate in the obtained snow pear extract by the extraction method in the prior art.
Compared with the example 1, the content of the total flavonoids in the cigarette pyrus ussuriensis maxim extracts in the comparative examples 1-2 is low, and the extraction rates of the cigarette pyrus ussuriensis maxim extracts in the comparative examples 1 and 3 are low, which indicates that the mutual compatibility of the ascorbyl palmitate and the sorbitol in the pretreating agent not only obviously improves the extraction rate of the cigarette pyrus ussuriensis maxim extract, but also obviously improves the content of the flavonoid compounds in the cigarette pyrus ussuriensis maxim extract by adopting the mode of pulping the pretreating agent and the pyrus ussuriensis maxim and then extracting.
The snow pear extracts for the cigarettes obtained in the example 1 and the comparative examples 4-7 are used as samples, evaluation is carried out in the Hebei leaf group, and the snow pear extracts are added into tobacco shreds according to the dosage of five parts by weight of the tobacco shreds, and the specific adding method comprises the following steps: after each sample was dissolved in a mixed solution of propylene glycol and water, the volume ratio of propylene glycol to water was 1: 1, uniformly spraying the mixture into tobacco shreds, storing the tobacco shreds at normal temperature for 4 hours after spraying to naturally alcoholize the tobacco shreds, baking the tobacco shreds at 60 ℃ until the moisture content is 12% -13%, carrying out sensory evaluation and identification by a cigarette blender after preparing cigarettes, taking cigarettes without the cigarette snow pear extract as a blank control group, and referring to national standard GB5606.4-2005 cigarette part 4: sensory technical requirements, evaluation criteria and evaluation scoring results are shown in the following table:
TABLE 2 cigarette sensory quality evaluation criteria
TABLE 3 cigarette evaluation sensory evaluation scoring results
The results of the panel of Table 3 show that:
example 1: the cigarette has plump and delicate fragrance, no miscellaneous gas and no irritation, has better harmony with the cigarette fragrance, produces saliva and returns sweet and comfortable aftertaste, and has better mouth moistening feeling;
comparative example 4: the cigarette has rich and rough aroma, slight miscellaneous gas, harmony with the cigarette aroma, slight stimulation and clean and comfortable aftertaste;
comparative example 5: the cigarette has rich and rough aroma, slight miscellaneous gas, is harmonious with the cigarette aroma, slight stimulation and clean and comfortable aftertaste;
comparative example 6: the cigarette has rich and rough aroma, slight miscellaneous gas, is harmonious with the cigarette aroma, slight stimulation and clean and comfortable aftertaste;
comparative example 7: the cigarette fragrance is plump and exquisite, has no miscellaneous gas, is relatively harmonious with the cigarette fragrance, has no stimulation, and has clean and comfortable aftertaste;
blank control group: the flue-cured tobacco has mellow and natural fragrance, good penetrability, large stimulation, rough smoke, dry mouth and stimulation to the throat;
the result of smoking evaluation shows that the snow pear extract for the cigarette has obvious effect on improving the dry feeling and the aroma of the oral cavity and improving the aspects of miscellaneous gas generation, throat stimulation and the like of the tobacco leaves when being added into the tobacco shreds.
The cigarette snow pear extract in example 1 is sampled and detected according to a method specified in industry standard YC/T146-2012 cigarette essence, the sampling base number is 1kg, the sampling quantity is 100mL, and the detection result is shown in the following table:
TABLE 4 detection results of the snow pear extract for cigarette of example 1
The above sampling test was also performed on the snow pear extracts for cigarettes of examples 2 to 7, and the test results are the same as those in Table 4, and thus are omitted.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A preparation method of a snow pear extract for cigarettes is characterized by comprising the following steps:
A. cleaning snow pears, peeling, removing kernels, cutting into blocks, adding a pretreating agent, pulping, and performing dehydration treatment to obtain a snow pear pretreatment substance;
the pretreating agent is prepared from the following components in a mass ratio of 1-2: 7, ascorbyl palmitate and sorbitol;
B. taking half of the mass of the snow pear pretreatment, extracting with ethanol with the volume fraction of 60%, filtering, and concentrating to obtain a first extract;
C. taking the other half of the snow pear pretreatment substance by mass, leaching with ethyl propionate, filtering, and concentrating to obtain a second extract;
D. and mixing the first extract and the second extract to obtain the snow pear extract for cigarettes.
2. The preparation method of the snow pear extract for the cigarettes according to claim 1, wherein the dehydration treatment in the step A is carried out until the moisture content in the obtained snow pear treated substance is less than or equal to 2%.
3. The preparation method of the snow pear extract for the cigarettes according to claim 1, wherein the amount of the pretreatment agent in the step A is 2-5% of the mass of the snow pears.
4. The preparation method of the snow pear extract for the cigarettes according to claim 1, wherein the leaching temperature in step B, C is 45-60 ℃ and the leaching time is 1-1.5 hours.
5. The preparation method of the snow pear extract for the cigarettes according to claim 1, wherein the concentration in the step B is carried out until the relative density is 1.2720-1.2880.
6. The preparation method of the snow pear extract for the cigarettes according to claim 1, wherein the concentration in the step C is carried out until the relative density is 1.2720-1.2880.
7. The preparation method of the snow pear extract for the cigarettes according to claim 1, wherein the amount of the ethanol is 3-4 times of the amount of the snow pear pretreatment substance, and the amount of the ethyl propionate is 3-4 times of the amount of the snow pear pretreatment substance.
8. The preparation method of the snow pear extract for the cigarettes according to claim 1, wherein in the step D, the mass ratio of the first extract to the second extract is 1: 1 and mixing.
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| CN114788578A (en) * | 2022-05-19 | 2022-07-26 | 湖北中烟工业有限责任公司 | Walnut shell extract for cigarettes, preparation method and cigars |
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