Composition as well as preparation method and application thereof

Abstract

The present invention provides a composition, which comprises 5-30 parts by weight of citrus essential oil, 0.5-2 parts by weight of an emulsifier, 30-80 parts by weight of an apple, passion fruit and lophatherum gracile composite extract, and 10-30 parts by weight of a stevia rebaudiana extract, the citrus essential oil is prepared by carrying out cold pressing on citrus peel, filtering, centrifuging the filtrate at a rotating speed of 5000-8000 r / min, retaining the upper layer essential oil, adding the emulsifier, and uniformly stirring. Freezing the upper-layer essential oil at the temperature of 80 DEG C below zero to 18 DEG C below zero for 5-24 hours, and dewaxing, so as to obtain the essential oil. The apple, passion fruit and lophatherum gracile composite extract is obtained by preparing composite extract raw materials from apples, passion fruits and lophatherum gracile according to a ratio of 1: 1: 2, preparing a first solvent from propylene glycol and water according to a ratio of 1: 2-1: 10, then mixing the composite extract raw materials and the first solvent according to a ratio of 1: 8-1: 15, performing ultrasonic extraction and filtration, and retaining filtrate; the stevia rebaudiana extract is obtained by mixing a stevia rebaudiana raw material and a second solvent according to a ratio of 1: 5-1: 20, preparing the second solvent according to a ratio of propylene glycol to water of 1: 5-1: 10, carrying out ultrasonic extraction, filtering and retaining filtrate.

Description

Technical Field

[0001] This invention relates to the field of tobacco technology, and in particular to a composition, its preparation method, and its application. Background Technology

[0002] When smoking tobacco products, a dry feeling is often felt, affecting sensory comfort. Currently, humectants are commonly used to treat tobacco products to prevent excessive moisture loss and maintain the moisture content of the tobacco and smoke. For example, the first type of humectant includes polyols, which retain moisture based on their hygroscopic properties, maintaining the moisture content of the tobacco during processing. However, these humectants are not moisture-proof and are greatly affected by the environment. The second type of humectant adds sugars and sugar alcohols to form a three-dimensional, semi-permeable biofilm on the surface of the tobacco product, reducing moisture loss and thus retaining moisture. The third type of humectant adds organic salts to form a hydration film on the surface of the tobacco product, preventing moisture evaporation and thus retaining moisture. The fourth type of humectant adds compound plant extracts, utilizing the polysaccharides in plants to reduce moisture loss.

[0003] When smoking tobacco products treated with the aforementioned humectant, although the moisture content of the smoke is much higher than that of the air, users still experience a noticeable dryness. Therefore, there is a need for a novel humectant that can maintain the moisture content of the tobacco and the smoke in tobacco products while simultaneously addressing the sensory dryness. Summary of the Invention

[0004] In view of this, the main objective of the present invention is to provide a composition that can maintain the moisture content of tobacco and smoke in tobacco products, while solving the user's sensory dryness and improving the comfort of smoking tobacco products.

[0005] Therefore, a first aspect of the present invention provides a composition comprising: 5-30 parts by weight of citrus essential oil, 0.5-2 parts by weight of emulsifier, 30-80 parts by weight of apple, passion fruit, and bamboo leaf compound extract, and 10-30 parts by weight of stevia extract, wherein...

[0006] The citrus essential oil is prepared by the following method: citrus peel is cold-pressed and filtered, the filtrate is centrifuged at 5000r / min to 8000r / min, the upper essential oil is retained, and the upper essential oil is dewaxed by freezing at -80℃ to -18℃ for 5h to 24h to obtain citrus essential oil.

[0007] The apple, passion fruit, and bamboo leaf compound extract was prepared by the following method: the raw materials for the compound extract were prepared according to the material ratio of apple:passion fruit:bamboo leaf = 1:1:2, the first solvent was prepared according to the material ratio of propylene glycol:water = 1:2 to 1:10, and then the raw materials for the compound extract were mixed according to the ratio of the first solvent = 1:8 to 1:15. The mixture was extracted by ultrasonication, filtered, and the filtrate was retained to obtain the apple, passion fruit, and bamboo leaf compound extract.

[0008] The stevia extract was prepared by the following method: stevia raw material was mixed with a second solvent at a ratio of 1:5 to 1:20, and the second solvent was prepared at a ratio of propylene glycol to water of 1:5 to 1:10. The mixture was extracted by ultrasonication, filtered, and the filtrate was retained to obtain the stevia extract.

[0009] In some embodiments, the composition comprises 50 to 80 parts by weight of the compound extract of apple, passion fruit, and bamboo leaf.

[0010] In some embodiments, the composition comprises 14.5 to 20 parts by weight of the stevia complex extract.

[0011] In some embodiments, the emulsifier includes one or more of the Tween series emulsifiers and the Span series emulsifiers.

[0012] In some embodiments, the composition comprises, by weight of the total composition, 10% to 20% polysaccharides, 5% to 8% polyphenols, 0.1% to 0.2% flavonoids, 0.1% to 0.2% vitamins, and 15% to 25% glycosides.

[0013] In some embodiments, the pH of the composition is 4 to 5.

[0014] A second aspect of this application provides a method for preparing a composition, comprising the following steps:

[0015] Preparation steps of citrus essential oil: After cold pressing of citrus peel, filter it, centrifuge the filtrate at 5000r / min~8000r / min, retain the upper essential oil, freeze the upper essential oil at -80℃~-18℃ for 5h~24h, and dewax it to obtain citrus essential oil;

[0016] Preparation steps of apple, passion fruit and bamboo leaf compound extract: Prepare the raw materials of compound extract according to the material ratio of apple:passion fruit:bamboo leaf = 1:1:2, prepare the solvent according to the material ratio of propylene glycol:water = 1:2 to 1:10, then mix according to the ratio of compound extract raw material:solvent = 1:8 to 1:15, extract by ultrasonication, filter, retain the filtrate to obtain apple, passion fruit and bamboo leaf compound extract.

[0017] Preparation steps of stevia extract: Stevia raw material : second solvent = 1:5 to 1:20, wherein the second solvent is prepared according to a material ratio of propylene glycol : water = 1:5 to 1:10; ultrasonic extraction; filtration; retention of the filtrate to obtain stevia extract; and

[0018] Preparation steps of the composition: Add 0.5 to 2 parts by weight of emulsifier to 5 to 30 parts by weight of the citrus essential oil, mix evenly, and then add 30 to 80 parts by weight of the apple, passion fruit, and bamboo leaf compound extract and 10 to 30 parts by weight of the stevia extract while stirring. Emulsify by stirring for 0.5 to 1 hour to obtain the composition.

[0019] In some embodiments, the emulsifier includes one or more of the Tween series emulsifiers and the Span series emulsifiers.

[0020] The third aspect of this application provides the use of the composition described in the first aspect or the composition prepared by the method described in the second aspect in tobacco products.

[0021] In some embodiments, the composition is applied to the tobacco article, wherein the weight of the composition is 2% to 5% relative to the weight of the tobacco article.

[0022] The composition provided in this application increases the moisture content of tobacco leaves and smoke, increases the flexibility of tobacco leaves, and reduces the dryness in the mouth; it improves the problems of spiciness, throat irritation, insufficient sweetness, and excessive phlegm production in smoke, thereby improving smoking comfort; it reduces the irritation of smoke, masks off-flavors, makes smoke smooth and mellow, and improves the aftertaste; it coordinates the aroma of different types of tobacco leaves, increases or enhances certain aromas, and makes the tobacco aroma fuller; it gives tobacco products a pleasant and comfortable olfactory aroma, and enhances people's desire to smoke. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] Throughout this specification, unless otherwise specified, the terminology used herein should be understood as having the meaning commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In the event of any conflict, this specification shall prevail.

[0025] It should be noted that, in the embodiments of the present invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a method or apparatus that includes a list of elements includes not only the elements expressly stated, but also other elements not expressly listed, or elements inherent to implementing the method or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other related elements in the method or apparatus that includes that element.

[0026] The dry sensation when smoking tobacco products is usually caused by dry smoke, spiciness, throat irritation, insufficient sweetness, and excessive phlegm production. Currently, the humectants used in tobacco products can maintain the moisture content of the tobacco and smoke, but they cannot eliminate the sensory dryness caused by spiciness, throat irritation, insufficient sweetness, and excessive phlegm production.

[0027] In view of this, the first aspect of this application provides a composition comprising 5-30 parts by weight of citrus essential oil, 0.5-2 parts by weight of emulsifier, 30-80 parts by weight of apple, passion fruit, and bamboo leaf compound extract, and 10-30 parts by weight of stevia extract, wherein...

[0028] The citrus essential oil is prepared by the following method: citrus peel is cold-pressed and filtered, the filtrate is centrifuged at 5000r / min to 8000r / min, the upper essential oil is retained, and the upper essential oil is dewaxed by freezing at -80℃ to -18℃ for 5h to 24h to obtain citrus essential oil.

[0029] The apple, passion fruit, and bamboo leaf compound extract was prepared by the following method: the raw materials for the compound extract were prepared according to the material ratio of apple:passion fruit:bamboo leaf = 1:1:2, the first solvent was prepared according to the material ratio of propylene glycol:water = 1:2 to 1:10, and then the raw materials for the compound extract were mixed according to the ratio of the first solvent = 1:8 to 1:15. The mixture was extracted by ultrasonication, filtered, and the filtrate was retained to obtain the apple, passion fruit, and bamboo leaf compound extract.

[0030] The stevia extract was prepared by the following method: stevia raw material was mixed with a second solvent at a ratio of 1:5 to 1:20, wherein the second solvent was prepared with a propylene glycol to water ratio of 1:5 to 1:10. The mixture was then subjected to ultrasonic extraction, filtered, and the filtrate was retained to obtain the stevia extract.

[0031] This application comprehensively analyzes the moisture content of flue gas and how to improve the spiciness, throat irritation, insufficient sweetness, and excessive phlegm production of flue gas. Through the quantitative formulation of various components such as citrus essential oil, apple, passion fruit, bamboo leaf compound extract, and stevia extract, a synergistic moisturizing and dryness-reducing composition is constructed.

[0032] In the composition, citrus essential oil is the oily component, while apple, passion fruit, bamboo leaf compound extract and stevia extract are the watery components. In the presence of emulsifier, the oily and watery components can emulsify to form a bilayer, thereby forming a protective film on the surface of tobacco products, reducing the moisture loss of tobacco shreds, and increasing the oiliness and moisture content of tobacco products, thus playing a moisturizing and hydrating role.

[0033] This study found that the pungent and throat-irritating sensation of tobacco smoke is mainly caused by substances such as amines, free alkaloids, and volatile carbonyl compounds. Amines are volatile and easily volatilize when heated during smoking, producing an irritating and spicy taste. Free nicotine in the smoke can lead to an excessively high pH value, thus causing irritation. Volatile carbonyl compounds, such as sugars and cellulose, decompose during the burning and smoking process of tobacco products, forming large amounts of irritating lower aldehydes such as formaldehyde and acrolein. These lower aldehydes can cause inflammation of the respiratory mucosa, resulting in excessive phlegm in the user's mouth and a dry feeling in the mouth.

[0034] Citrus essential oil is rich in vitamins and naringin, among which naringin belongs to the dihydroflavonoid class of compounds and has antibacterial, anti-inflammatory, free radical scavenging, antioxidant, antitussive, and expectorant effects, which can reduce the spiciness and throat irritation of tobacco. The abundant vitamins also help regulate the pH value of cigarette smoke, thereby reducing its irritation. Furthermore, citrus essential oil has a sweet taste, and its aroma complements the fragrance of tobacco, providing a superior fruity top note for tobacco products and enhancing the user's sensory experience.

[0035] The compound extracts of apple, passion fruit and bamboo leaf contain a variety of ketones, phenols and polysaccharides that combine to form a three-dimensional cross-linked network structure that can accommodate small molecules. The unsaturated hydroxyl groups, ketone groups and other groups in the cross-linked network structure can preferentially adsorb and bind to components such as formaldehyde and ammonia, thereby playing a role in the physical adsorption and chemical decomposition of irritating substances in flue gas.

[0036] The main organic acid in the compound extract of apple, passion fruit, and bamboo leaves is malic acid, a non-volatile acid that can neutralize free alkaloids, such as nicotine, thereby adjusting the pH of the smoke, reducing its irritation, and improving the smoking experience. The passion fruit component in this compound extract is highly acidic and rich in various vitamins, which can further regulate the pH of tobacco, thus reducing its irritation.

[0037] The compound extract of apple, passion fruit, and bamboo leaf contains various ketones and phenols. Among these ketones and phenols, some molecules have unsaturated pyranone structures, some have phenyl rings substituted with polyphenolic hydroxyl groups, and some have hydroxyl radicals, ketone groups, and ortho- and di-hydroxyl groups, giving these compounds antioxidant properties. Therefore, the compound extract of apple, passion fruit, and bamboo leaf is beneficial in inhibiting inflammation in the throat and lungs, reducing phlegm secretion, improving throat comfort, and enhancing sensory comfort.

[0038] A compound extract of apple, passion fruit, and bamboo leaf is beneficial for resolving excessive phlegm in the mouth caused by inflammation of the respiratory mucosa. The apple component of this extract is rich in pectin and antioxidants such as ketones and phenols, which can improve respiratory and lung function, inhibit inflammatory responses in the lungs, and thus alleviate cough and phlegm. The passion fruit component is rich in vitamins and flavonoids, which have anti-inflammatory effects and can relieve phlegm and cough. The bamboo leaf component can scavenge free radicals, clear heat and detoxify, and quench thirst.

[0039] In addition, the malic acid in the compound extract of apple, passion fruit and bamboo leaf can promote saliva secretion and reduce or even eliminate the feeling of thirst.

[0040] Stevia extract is rich in glycosides, which can enhance the sweetness of tobacco products, reduce spiciness, and quench thirst. At the same time, glycosides are also precursors of aroma components, which can enrich the aroma and improve the user experience after cleavage.

[0041] This application utilizes an emulsifier to emulsify oily and watery components, forming a bimolecular protective layer that provides moisturizing and hydrating effects. Furthermore, the apple, passion fruit, and bamboo leaf extracts in the composition facilitate the physical adsorption and chemical decomposition of irritating lower aldehydes, carcinogens, or their precursors in cigarette smoke, reducing irritation and spiciness during inhalation. The organic acids in the apple, passion fruit, and bamboo leaf extracts help regulate the pH value of the smoke, reducing the irritation of tobacco products during inhalation. Additionally, they help inhibit respiratory and lung inflammation, clear heat and detoxify, reduce phlegm production, and promote saliva secretion, alleviating the feeling of thirst. Further, the stevia extract in the composition enhances the sweetness of tobacco products and reduces spiciness. Moreover, citrus essential oils and stevia extracts also enhance the aroma richness of tobacco products and improve the smoking experience.

[0042] In this application, the composition comprises 5 to 30 parts by weight of citrus essential oil. This improves the moisturizing effect of the composition, enhances the sweetness and aroma richness of the tobacco product, and improves the smoking experience. Exemplarily, the weight percentage of citrus essential oil can be 5, 10, 15, 20, 25, 30, or any two of these values. In some embodiments, the composition comprises 10 to 30 parts by weight of citrus essential oil.

[0043] In this application, the citrus essential oil is prepared by the following method: citrus peel is cold-pressed and filtered; the filtrate is centrifuged at 5000 rpm to 8000 rpm, retaining the upper essential oil layer; the upper essential oil layer is then frozen at -80°C to -18°C for 5 to 24 hours to dewax, yielding the citrus essential oil. Dewaxing the upper essential oil obtained by centrifugation under low-temperature freezing conditions helps improve the purity of the citrus essential oil, thereby enhancing the sweetness and aroma richness of tobacco products and improving the smoking quality of tobacco products.

[0044] In this application, the composition comprises 30-80 parts by weight of a compound extract of apple, passion fruit, and bamboo leaves. This enhances the adsorption and decomposition of irritating substances, improves the pH regulation and anti-inflammatory effects of the smoke, thereby reducing or even eliminating the irritation and phlegm production associated with tobacco products, and improving the smoking comfort of tobacco products. Exemplarily, in the composition, the weight percentages of the apple, passion fruit, and bamboo leaf compound extract can be 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, or any two of these values ​​within a range. In some embodiments, the composition comprises 50-80 parts by weight of the apple, passion fruit, and bamboo leaf compound extract.

[0045] In this application, the apple, passion fruit, and bamboo leaf composite extract is prepared by the following method: The raw materials for the composite extract are prepared according to a material ratio of apple:passion fruit:bamboo leaf = 1:1:2; a first solvent is prepared according to a material ratio of propylene glycol:water = 1:2 to 1:10; then, the raw materials are mixed according to a ratio of composite extract raw materials:solvent = 1:8 to 1:15; ultrasonic extraction is performed; after filtration, the filtrate is retained to obtain the apple, passion fruit, and bamboo leaf composite extract. Using a mixture of apple, passion fruit, and bamboo leaf as the raw materials for the composite extract is beneficial for improving the aroma harmony of the composite extract, thereby improving the smoking quality of tobacco products. Furthermore, the effective components in apple, passion fruit, and bamboo leaf have similar solubility, and using a single extraction method helps save production costs. Using a mixed solvent of propylene glycol and water for extraction is beneficial for extracting ketones, phenolic compounds, organic acids, polysaccharides, etc., from the apple, passion fruit, and bamboo leaf composite extract raw materials. In addition, propylene glycol itself has a moisturizing effect, which helps improve the moisturizing effect of the composition. Ultrasonic extraction can be performed within a temperature range of 25°C to 60°C, for example, at 40°C. Exemplarily, the material ratio of propylene glycol to water in the first solvent can be 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9, 1:10, or any two values ​​thereof. By using a ratio of the composite extract raw material to the first solvent of 1:8 to 1:15, extraction efficiency can be improved while reducing reagent and energy waste. Exemplarily, the ratio of the composite extract raw material to the solvent can be 1:8, 1:9, 1:10, 1:11, 1:12, 1:13, 1:14, 1:15, or any two values ​​thereof.

[0046] In this application, the composition comprises 10 to 30 parts by weight of stevia extract. This is beneficial for improving the sweetness and aroma richness of tobacco products, thereby improving the smoking quality of the tobacco products. Exemplarily, in the composition, the weight percentage of the stevia extract can be 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, or any two of these values. In some embodiments, the composition comprises 14.5 to 20 parts by weight of the stevia complex extract.

[0047] In this application, the stevia extract is prepared by the following method: Stevia raw material is mixed with a second solvent at a ratio of 1:5 to 1:20, wherein the second solvent is prepared according to a propylene glycol to water ratio of 1:5 to 1:10. The mixture is then further mixed with pulverized stevia raw material at a ratio of 1:5 to 1:20, subjected to ultrasonic extraction, filtered, and the filtrate is retained to obtain the stevia extract. The stevia raw material is dried stevia, which can be obtained, for example, by sun-drying or oven-drying. Before mixing with the solvent, the stevia raw material can be pulverized and sieved, for example, through a 40-mesh sieve, to remove large particles, thereby ensuring sufficient contact between the stevia raw material and the solvent and improving extraction efficiency. Ultrasonic extraction can be carried out in a temperature range of 25℃ to 60℃, for example, at 50℃. Using a mixture of propylene glycol and water as the second solvent is beneficial for improving the extraction rate of the active ingredients in stevia and for extracting the aroma components. For example, in the second solvent, the material ratio of propylene glycol to water can be 1:5, 1:6, 1:7, 1:8, 1:9, 1:10, or any value within a range of two such values. Maintaining the ratio of stevia raw material to the second solvent within the range of 1:5 to 1:20 is beneficial for improving the extraction efficiency of the active ingredients in stevia. For example, the ratio of stevia raw material to the second solvent can be 1:5, 1:8, 1:10, 1:13, 1:15, 1:18, 1:20, or any value within a range of two such values.

[0048] In this application, the composition includes 0.5 to 2 parts by weight of emulsifier. This facilitates the emulsification of oily components (e.g., citrus essential oil) and aqueous components (e.g., apple, passion fruit, bamboo leaf compound extract, and stevia extract) in the composition, thereby maintaining the moisture content of the tobacco product. Exemplarily, in the composition, the amount of emulsifier by weight can be 0.5, 1, 1.5, 2 parts by weight, or a value within a range of any two of these values.

[0049] In some embodiments, the emulsifier includes one or more of the Tween and Span series. Exemplarily, Tween series emulsifiers include, but are not limited to, Tween 20, Tween 40, Tween 60, and Tween 80; Span series emulsifiers include, but are not limited to, Span 20, Span 40, Span 60, and Span 80. Exemplarily, the emulsifier includes one or more of Tween 60, Tween 80, and Span 60.

[0050] In some embodiments, the composition comprises, by weight of the total composition, 10% to 20% polysaccharides, 5% to 8% polyphenols, 0.1% to 0.2% flavonoids, 0.1% to 0.2% vitamins, and 15% to 25% glycosides.

[0051] In the composition of this application, polysaccharides and polyphenols form a three-dimensional cross-linked network structure, which can adsorb and decompose irritating amines and aldehydes in cigarette smoke, thereby reducing the irritation and spiciness of tobacco products when smoked. Exemplarily, the content of polysaccharides, based on the total mass of the composition, can be 10%, 12%, 15%, 18%, 20%, or a value within a range of any two of these values. In some embodiments, the polysaccharides include, but are not limited to, apple polysaccharide, rhamnose, mannose, galactose, glucose, and fucose.

[0052] For example, the content of polyphenols, based on the total mass of the composition, can be 5%, 6%, 7%, 8%, or a range consisting of any two of these values. In some embodiments, the polyphenols include, but are not limited to, chlorogenic acid, catechins, epicatechin, tannins, phlorizin, phloretin, and anthocyanins.

[0053] The flavonoids in the composition have antibacterial, anti-inflammatory, free radical scavenging, antitussive, and expectorant effects, which are beneficial in reducing problems such as excessive phlegm production caused by inflammation of the respiratory and pulmonary systems. For example, the content of flavonoids, based on the total mass of the composition, can be 0.1%, 0.15%, 0.2%, or a value within a range of any two of these values. In some embodiments, the flavonoids include, but are not limited to, vitexin, isovitexin, violetin, and isovitexin.

[0054] The vitamins in the composition help regulate the pH of flue gas and reduce irritation. Exemplarily, the vitamin content, based on the total mass of the composition, can be 0.1%, 0.15%, 0.2%, or a range consisting of any two of these values. In some embodiments, the vitamins include, but are not limited to, vitamin B, vitamin C, vitamin A, and vitamin E.

[0055] The glycosides in the composition are beneficial for enhancing the sweetness and aroma richness of tobacco products, thereby improving the smoking quality. For example, the content of the glycosides, based on the total mass of the composition, can be 15%, 18%, 20%, 22%, 25%, or a range consisting of any two of these values. In some embodiments, the glycosides include, but are not limited to, leboside M, leboside A, and steviol glycoside.

[0056] In some embodiments, the pH of the composition is 4 to 5. Maintaining the pH of the composition within this range helps neutralize the alkaline substances released during the smoking of tobacco products, reducing irritation and thus improving the smoking experience. Exemplarily, the pH of the composition can be 4, 4.5, 5, or a value within a range of any two of these values.

[0057] A second aspect of this application also provides a method for preparing a composition, comprising the following steps:

[0058] Preparation steps of citrus essential oil: After cold pressing of citrus peel, filter it, centrifuge the filtrate at 5000r / min~8000r / min, retain the upper essential oil, freeze the upper essential oil at -80℃~-18℃ for 5h~24h, and dewax it to obtain citrus essential oil;

[0059] Preparation steps of apple, passion fruit and bamboo leaf compound extract: Prepare the raw materials of compound extract according to the material ratio of apple:passion fruit:bamboo leaf = 1:1:2, prepare the solvent according to the material ratio of propylene glycol:water = 1:2 to 1:10, then mix according to the ratio of compound extract raw material:solvent = 1:8 to 1:15, extract by ultrasonication, filter, retain the filtrate to obtain apple, passion fruit and bamboo leaf compound extract.

[0060] Preparation steps of stevia extract: Stevia raw material: second solvent = 1:5 to 1:20, wherein the second solvent is prepared according to a material ratio of propylene glycol: water = 1:5 to 1:10. The mixture is then subjected to ultrasonic extraction, filtered, and the filtrate is retained to obtain stevia extract; and

[0061] Preparation steps of the composition: Add 0.5 to 2 parts by weight of emulsifier to 5 to 30 parts by weight of the citrus essential oil, mix evenly, and then add 30 to 80 parts by weight of the apple, passion fruit, and bamboo leaf compound extract and 10 to 30 parts by weight of the stevia extract while stirring. Emulsify by stirring for 0.5 to 1 hour to obtain the composition.

[0062] The preparation steps of the citrus essential oil, the apple, passion fruit, and bamboo leaf compound extract, and the stevia extract have the same characteristics as the preparation methods described in the above-mentioned compositions, and will not be repeated here.

[0063] In the preparation step of the composition, citrus essential oil is first stirred with an emulsifier until dissolved, and then apple, passion fruit, bamboo leaf compound extract, and stevia extract are added, which facilitates thorough mixing and emulsification of the components in the composition. In the preparation step, the addition of the apple, passion fruit, bamboo leaf compound extract, and stevia extract can be done by adding the two extracts sequentially, or by mixing the two extracts thoroughly before adding them as a mixture. Stirring and emulsification can be performed using methods and instruments known in the art, for example, a homogenizer. Exemplarily, the emulsification time can be 0.5 h, 0.75 h, 1 h, or a value within a range of any two of these values.

[0064] The composition prepared using the method described in this application, under the action of an emulsifier, allows for the full emulsification of aqueous components such as citrus essential oil and plant extracts, facilitating the formation of a bilayer protective film on the surface of tobacco products, thus providing excellent moisturizing and hydrating effects. Furthermore, the added apple, passion fruit, and bamboo leaf extracts help absorb and decompose irritating amines and aldehydes produced during tobacco smoking. The organic acids and vitamins in the extracts neutralize the alkaloids in tobacco products, lowering the pH value of the smoke and thus reducing the spiciness and irritation during smoking. Additionally, the flavonoids, ketones, and phenols in the extracts have anti-inflammatory, antitussive, and expectorant effects, helping to alleviate excessive phlegm production caused by respiratory and lung inflammation. Citrus essential oil and stevia extract enhance the aroma richness and sweetness of tobacco products, improving the smoking experience.

[0065] The third aspect of this application also provides the use of the compositions of the first aspect or the compositions prepared by the methods of the second aspect in tobacco products.

[0066] In some embodiments, the composition is applied directly to the surface of a tobacco product to treat it. In some embodiments, the composition accounts for 2% to 5% of the weight of the tobacco product. This improves the moisturizing effect on the tobacco product, reduces the spiciness and irritation during smoking, alleviates problems such as excessive phlegm production, and enhances the taste and aroma, thus improving the smoking quality. Exemplarily, the weight of the composition relative to the tobacco product can be 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, or any two of these values. In this application, methods of applying the composition to the tobacco product may include, but are not limited to, spraying it onto tobacco leaves, adding it to tobacco oil or flavoring, or adding it to the filter of a smoking device.

[0067] The present invention will be further described in detail below with reference to specific embodiments. The purpose of this description is merely illustrative and not intended to limit the scope of this disclosure.

[0068] Example 1

[0069] Preparation of citrus essential oil

[0070] The citrus peel was washed, pressed using a cold pressing method, the residue was filtered out, the filtrate was retained, and the filtrate was centrifuged using a high-speed centrifuge at a speed of 5000 r / min. The upper essential oil was collected and placed in an ultra-low temperature freezer at -18℃ for 24 hours to dewax, thus obtaining citrus essential oil.

[0071] Preparation of compound extracts of apple, passion fruit, and bamboo leaves

[0072] Apple, passion fruit, and bamboo leaves were formulated into a compound extract raw material according to the ratio of apple:passion fruit:bamboo leaves = 1:1:2. The first solvent was prepared according to the ratio of propylene glycol (PG):water = 1:10. The compound extract raw material and the first solvent were mixed at a ratio of 1:13 and extracted with ultrasound at 40℃ for 30 minutes. The extraction was repeated twice, and the mixture was concentrated to obtain the compound extract.

[0073] Preparation of Stevia extract

[0074] Stevia products were dried, pulverized and passed through a 40-mesh sieve. A second solvent was prepared by mixing propylene glycol and water in a ratio of PG:water = 1:8. The pulverized stevia raw material and the second solvent were mixed in a ratio of 1:5 and extracted with ultrasound at 50°C for 40 minutes. The extraction was repeated twice, and the extract was concentrated to obtain stevia extract.

[0075] Preparation of the composition

[0076] Take 5g of citrus essential oil, add 0.5g of Tween 80, stir until dissolved and homogenized, place in a homogenizer and stir, while stirring, add a mixture of apple, passion fruit, bamboo leaf compound extract and stevia extract, wherein the apple, passion fruit and bamboo leaf compound extract is 80g and the stevia extract is 14.5g, and homogenize in a homogenizer for 1 hour to obtain the composition.

[0077] Examples 2-3

[0078] Citrus essential oil, apple, passion fruit, bamboo leaf compound extract and stevia extract were prepared using a similar preparation method to Example 1, except that the citrus essential oil, apple, passion fruit, bamboo leaf compound extract and stevia extract were prepared according to the parameters shown in Table 1.

[0079] The composition was prepared using a method similar to that in Example 1, except that the types and amounts of raw materials were adjusted according to the parameters shown in Table 2.

[0080] Comparative Examples 1-6

[0081] Citrus essential oil, apple, passion fruit, bamboo leaf compound extract and stevia extract were prepared using the same preparation method as in Example 2.

[0082] The composition was prepared using a method similar to that in Example 1, except that the types and amounts of raw materials were adjusted according to the parameters shown in Table 2.

[0083] Table 1

[0084]

[0085] Table 2

[0086]

[0087]

[0088] The compositions prepared in Examples 1-3 and Comparative Examples 1-4 were sprayed onto the surface of tobacco according to the spraying ratios shown in Table 2. The moisture content of the tobacco was tested (results are shown in Table 4) and the sensory evaluation was performed (results are shown in Table 5) according to the following methods.

[0089] In addition, the composition content and pH of the compositions prepared in Examples 1-3 and Comparative Examples 1-4 were tested. The test methods are as follows, and the results are shown in Table 6.

[0090] Moisture content test method:

[0091] Take 10g each of the compositions of Examples 1-3, the compositions of Comparative Examples 1-6, and propylene glycol, and spray them evenly onto 0.5kg of flue-cured tobacco. The control group is the same amount of flue-cured tobacco with 10g of water added. The tobacco with the compositions of Examples 1-3, the compositions of Comparative Examples 1-6, and propylene glycol added, and the tobacco of the control group were conditioned in an environment with a temperature of (25±1)℃ and a relative humidity of (60±2)%, and their equilibrium moisture content was determined by the oven drying method. (1) Measure the constant weight of the culture dish. Place the numbered culture dishes into the oven and dry them at 100℃ for 2 hours. Take them out and place them in a silica gel desiccator to cool to room temperature. Weigh them as m0. Repeat the operation until the mass of the culture dish is constant. (2) Measure the equilibrium mass. Take 10g of tobacco shreds equilibrated in an environment of (25±1)℃ and (60±2)% relative humidity every 24 hours, quickly pour the tobacco shreds into a pre-weighed petri dish, cover and weigh immediately (mb); (3) Determine the drying quality of the equilibrated tobacco shreds. Place the weighed equilibrated tobacco shreds into an oven, open the lid of the petri dish, dry at 100℃ for 2 hours, cover the petri dish, take it out, quickly put it into a silica gel desiccator, cool to room temperature, and weigh immediately (m). 烘 The equilibrium moisture content of the tobacco shreds is calculated using the following formula:

[0092] Equilibrium moisture content of tobacco shreds = {[(mb-m0)-(m 烘 -m0)] / (mb-m0)}×100%

[0093] =[(mb-m 烘 [(mb-m0)]×100%

[0094] Sensory evaluation test:

[0095] The tobacco products sprayed with the composition were then subjected to sensory evaluation by seven judges. A self-designed sensory dryness evaluation method was used, with evaluation indicators including irritation, taste, and dryness. Irritation was further subdivided into oral irritation, throat irritation, and nasal irritation; taste was subdivided into sweetness, spiciness, and bitterness; and dryness was subdivided into alkalinity, dryness, and increased phlegm production. Each indicator was scored from 0 to 9 points, with lower scores for lower irritation, higher scores for moderate taste, and lower scores for stronger dryness. The sensory evaluation scoring criteria are shown in Table 3.

[0096] Table 3

[0097]

[0098] Component content detection and pH detection:

[0099] The content of polysaccharides was determined by high performance liquid chromatography (HPLC) according to GB5009.8-2023 standard.

[0100] The content of polyphenols was determined by spectrophotometry according to the standard T / AHFIA005-2018.

[0101] The content of flavonoids was determined by spectrophotometry according to the SZDB / Z 349-2019 standard.

[0102] Vitamin content determination: determined according to the method in GB 5009.86-2016 standard.

[0103] Determination of glycoside content: The content was determined according to the standard method of GB 1886.355-2022.

[0104] pH value determination: measured using a Leici pH meter.

[0105] Table 4. Moisture Content Test Results

[0106]

[0107] Table 5 Sensory evaluation results

[0108]

[0109] Table 6 Component Detection Results

[0110] Types of moisturizers polysaccharide content Polyphenol content Flavonoid content Vitamin content glycoside content pH value Example 1 18.9％ 6.2％ 0.12％ 0.15％ 16.9％ 4.2 Example 2 12.4％ 5.7％ 0.11％ 0.12％ 17.8％ 4.8 Example 3 16.8％ 6.1％ 0.14％ 0.16％ 21.3％ 4.3 Comparative Example 1 13.5％ 5.9％ 0.12％ 0.09％ 17.7％ 4.6 Comparative Example 2 10.7％ 4.2％ 0.09％ 0.22％ 21.8％ 4.7 Comparative Example 3 6.3％ 2.3％ 0.06％ 0.06％ 23.7％ 5.3 Comparative Example 4 21.6％ 8.8％ 0.23％ 0.23％ 17.2％ 3.9 Comparative Example 5 14.2％ 7.2％ 0.13％ 0.14％ 6.1％ 4.8 Comparative Example 6 9.1％ 5.4％ 0.09％ 0.10％ 56.4％ 4.7

[0111] According to the test results above, the tobacco products treated with the compositions of Examples 1-3 of this application had a higher moisture content after six days than the tobacco products treated with the compositions of Comparative Examples 1-6, especially higher than the tobacco products treated with the compositions of Comparative Examples 1-4. The sensory evaluation of the tobacco products treated with the compositions of Examples 1-3 of this application was also higher than that of the tobacco products treated with the compositions of Comparative Examples 1-6. In the compositions of this application, citrus essential oil, apple, passion fruit, and bamboo leaf extracts, and stevia provide excellent moisturizing effects and effectively reduce dryness and irritation, resulting in a better sensory experience.

[0112] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A composition wherein, The composition comprises 5-30 parts by weight of citrus essential oil, 0.5-2 parts by weight of emulsifier, 30-80 parts by weight of apple, passion fruit, and bamboo leaf compound extract, and 10-30 parts by weight of stevia extract, wherein... The citrus essential oil is prepared by the following method: citrus peel is cold-pressed and filtered, the filtrate is centrifuged at 5000r / min to 8000r / min, the upper essential oil is retained, and the upper essential oil is dewaxed by freezing at -80℃ to -18℃ for 5h to 24h to obtain citrus essential oil. The apple, passion fruit, and bamboo leaf compound extract was prepared by the following method: the raw materials for the compound extract were prepared according to the material ratio of apple:passion fruit:bamboo leaf = 1:1:2, the first solvent was prepared according to the material ratio of propylene glycol:water = 1:2 to 1:10, and then the raw materials for the compound extract were mixed according to the ratio of the first solvent = 1:8 to 1:

15. The mixture was extracted by ultrasonication, filtered, and the filtrate was retained to obtain the apple, passion fruit, and bamboo leaf compound extract. The stevia extract was prepared by the following method: stevia raw material was mixed with a second solvent at a ratio of 1:5 to 1:20, and the second solvent was prepared at a ratio of propylene glycol to water of 1:5 to 1:

10. The mixture was extracted by ultrasonication, filtered, and the filtrate was retained to obtain the stevia extract.

2. The composition according to claim 1, wherein, The composition comprises 50-80 parts by weight of the compound extract of apple, passion fruit, and bamboo leaf.

3. The composition according to claim 1 or 2, wherein, The composition comprises 14.5 to 20 parts by weight of the stevia complex extract.

4. The composition according to claim 1 or 2, wherein, The emulsifier includes one or more of the Tween series emulsifiers and the Span series emulsifiers.

5. The composition according to claim 1 or 2, wherein, The composition comprises, by weight of the total composition, 10%–20% polysaccharides, 5%–8% polyphenols, 0.1%–0.2% flavonoids, 0.1%–0.2% vitamins, and 15%–25% glycosides.

6. The composition according to claim 1 or 2, wherein, The pH of the composition is 4 to 5.

7. A method for preparing a composition, comprising the following steps: Preparation steps of citrus essential oil: After cold pressing of citrus peel, filter it, centrifuge the filtrate at 5000r / min~8000r / min, retain the upper essential oil, freeze the upper essential oil at -80℃~-18℃ for 5h~24h, and dewax it to obtain citrus essential oil; Preparation steps of apple, passion fruit and bamboo leaf compound extract: Prepare the raw materials of compound extract according to the material ratio of apple:passion fruit:bamboo leaf = 1:1:2, prepare the solvent according to the material ratio of propylene glycol:water = 1:2 to 1:10, then mix according to the ratio of compound extract raw material:solvent = 1:8 to 1:15, extract by ultrasonication, filter, retain the filtrate to obtain apple, passion fruit and bamboo leaf compound extract. Preparation steps of stevia extract: Stevia raw material : second solvent = 1:5 to 1:20, wherein the second solvent is prepared according to a material ratio of propylene glycol : water = 1:5 to 1:10; ultrasonic extraction; filtration; retention of the filtrate to obtain stevia extract; and Preparation steps of the composition: Add 0.5 to 2 parts by weight of emulsifier to 5 to 30 parts by weight of the citrus essential oil, mix evenly, and then add 30 to 80 parts by weight of the apple, passion fruit, and bamboo leaf compound extract and 10 to 30 parts by weight of the stevia extract while stirring. Emulsify by stirring for 0.5 to 1 hour to obtain the composition.

8. The preparation method according to claim 7, wherein, The emulsifier includes one or more of the Tween series emulsifiers and the Span series emulsifiers.

9. The use of the composition according to any one of claims 1 to 6 or the composition prepared by the method according to claim 7 or 8 in tobacco products.

10. The application according to claim 9, wherein, The composition is applied to the tobacco product, wherein the weight of the composition is 2% to 5% relative to the weight of the tobacco product.

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