Aroma-enhancing and quality-improving reagent for cigar tobacco leaves and application of aroma-enhancing and quality-improving reagent

Abstract

The invention discloses a reagent for enhancing aroma and improving quality of cigar tobacco leaves and application of the reagent, and relates to the technical field of tobacco fertilization and tobacco processing.The reagent comprises an ornithine solution with the mass concentration being 0.1-0.3%, or a glutamic acid solution with the mass concentration being 0.1-0.3%, or a proline solution with the mass concentration being 0.1-0.3%. The cigar tobacco aroma improving method has important significance on improving the quality of cigar tobacco raw materials, and is easy to operate, low in cost, economical and practical.

Description

Technical Field

[0001] The present invention relates to the technical fields of tobacco fertilization and tobacco processing, and particularly relates to a reagent for enhancing the aroma and improving the quality of cigar tobacco leaves and its application. Background Art

[0002] A cigar is a natural tobacco product hand-rolled from whole leaves, consisting of a filler, a binder, and a wrapper from the inside out. It has a special aroma, unique charm, and characteristics of strong strength and high nicotine. The filler is the core part of the cigar, determining the taste and aroma levels during smoking. Therefore, the filler tobacco leaves are required to have a good aroma style, comfortable taste, and a certain strength. The aroma components of cigar tobacco leaves are complex and diverse, including various compounds such as alcohols, aldehydes, esters, and heterocycles, which together constitute the unique flavor of cigar tobacco. However, the formation of the aroma quality of cigar tobacco is a complex process. Amino acids, as aroma precursors in tobacco leaves, make important contributions to the aroma of tobacco leaves. Certain amino acids (such as phenylalanine) can decompose directly into aroma substances such as benzyl alcohol and phenethyl alcohol through reactions. Existing research shows that proline is the main precursor for the synthesis of aroma in fragrant rice, and glutamic acid can significantly improve the flavor characteristics of litchi wine.

[0003] Currently, compared with the sensory quality of foreign cigar tobacco leaves, domestic cigar tobacco leaves generally have problems such as low aroma, heavy off-flavors, and unclear aroma styles, which seriously restrict the development of the domestic cigar market. Existing methods for enhancing aroma and improving quality mainly focus on cigar fermentation technology. For example, coffee powder or rum is mixed with water and then added to cigar tobacco leaves for fermentation. The sensory quality of the fermented tobacco leaves has been significantly improved, with the quality of the aroma, the amount of aroma, and the combustibility being significantly improved, and the aroma being more abundant. Such as the technical solutions disclosed in the patent applications with publication numbers "CN114190579A" and "CN114947178A". Regarding flue-cured tobacco, existing technologies improve the sensory quality and aroma substances of flue-cured tobacco by foliar spraying mixtures or plant growth regulators. Such as the technical solution disclosed in the patent application with publication number "CN119423106A". In addition, predecessors applied enzyme preparations to tobacco leaves during the mature period to improve the quality of upper leaves. Such as the technical solution disclosed in the patent application with publication number "CN118786843A", which shows that the aroma, comfort, and sweetness are all improved, and the irritation is reduced. Although the aroma quality of tobacco leaves has been improved to a certain extent, this method is relatively complex in the operation process and has a high economic cost.

[0004] Therefore, exploring new technologies for applying foliar micronutrients to improve the aroma style of cigar tobacco leaves is of great significance for improving the quality of cigar tobacco leaf raw materials. Summary of the Invention

[0005] The object of the present invention is to provide a reagent for enhancing the aroma and improving the quality of cigar tobacco leaves, and its application. By adopting a new technology for applying foliar micronutrients, the aroma style of cigar tobacco leaves is improved, and the quality of cigar tobacco leaf raw materials is enhanced.

[0006] The present invention is achieved by the following technical solutions: A reagent for enhancing the aroma and improving the quality of cigar tobacco leaves, comprising an ornithine solution with a mass concentration of 0.1 - 0.3%, or a glutamic acid solution with a mass concentration of 0.1 - 0.3%, or a proline solution with a mass concentration of 0.1 - 0.3%.

[0007] Furthermore, the present invention discloses the application of the reagent for enhancing the aroma and improving the quality of cigar tobacco leaves as described above in the preparation of cigar tobacco leaf fertilizers.

[0008] Furthermore, during application, the reagent solution for enhancing the aroma and improving the quality of cigar tobacco leaves is sprayed on the leaf surface of the tobacco leaves from 8:00 to 10:00 in the morning during the mature period of the tobacco leaves, when it is sunny, windless or with gentle breeze, until a uniform liquid film is formed on the leaf surface of the tobacco leaves.

[0009] Furthermore, during application, a knapsack sprayer is used to spray both the front and back sides of the tobacco leaves, and the nozzle of the sprayer is 30 - 40 cm away from the leaf surface of the tobacco leaves. If it rains within 24 hours after spraying the reagent solution, re - spraying is required.

[0010] Furthermore, during application, a proline solution with a mass concentration of 0.1 - 0.3% is used to spray the tobacco leaves to increase the aroma - generating components of almond aroma, sweet aroma, mellow aroma, fruit aroma and rose flower aroma in cigar tobacco leaves.

[0011] Furthermore, during application, a proline solution with a mass concentration of 0.1 - 0.3% is used to spray the tobacco leaves to increase the content of browning reaction products in cigar tobacco leaves.

[0012] Furthermore, during application, an ornithine or proline solution with a mass concentration of 0.1 - 0.3% is used to spray the tobacco leaves to increase the contents of linalool and farnesyl acetone in cigar tobacco leaves.

[0013] Furthermore, during application, a proline or ornithine solution with a mass concentration of 0.1 - 0.3% is used to spray the tobacco leaves to increase the content of solanone in cigar tobacco leaves.

[0014] Furthermore, during application, a proline or ornithine solution with a mass concentration of 0.1 - 0.3% is used to spray the tobacco leaves to increase the content of neophytadiene in cigar tobacco leaves.

[0015] Furthermore, during application, a glutamic acid solution with a mass concentration of 0.1 - 0.3% is used to spray the tobacco leaves to enhance the sweet honey aroma, flower aroma and other fragrance notes of cigar products.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. In the present invention, a reagent for enhancing the fragrance and quality of cigar tobacco leaves is provided, which is a single-component amino acid solution. It is convenient to prepare and use, and has the effect of enhancing the fragrance and quality of cigar tobacco leaves. Compared with other enzyme preparations, the present invention has simple operation and low cost, and has certain economic practicality.

[0017] 2. In the present invention, a reagent for enhancing the fragrance and quality of cigar tobacco leaves is provided, which is mainly used for spraying on the leaves of tobacco leaves during the mature period (before picking) to achieve the effect of enhancing the fragrance and quality of cigar tobacco leaves. Compared with the treatment methods that intervene in the tobacco leaf fermentation and other processes, this treatment method is more convenient and the fragrance is more natural.

[0018] 3. In the present invention, compared with the untreated tobacco leaves, the industrial usability and sensory quality of the tobacco leaves sprayed with the reagent for enhancing the fragrance and quality of cigar tobacco leaves are significantly improved. Specifically, the quality and quantity of the fragrance increase, the miscellaneous gas decreases, the aftertaste is more comfortable, and the combustibility is better; the potassium-chlorine ratio of cigar tobacco leaves increases and the chemical components are more coordinated, and the quality of tobacco leaves is significantly improved. In addition, the aroma components of cigar tobacco leaves increase, and the contents of phenylalanine degradation products, browning reaction products, carotenoid degradation products, cembranoid degradation products and neophytadiene increase to varying degrees, and the aroma concentration, mellow feeling and richness of the aroma rhyme are all improved.

[0019] 4. In the present invention, preferably during the mature period of tobacco leaves, the leaves of tobacco leaves are sprayed at 8:00~10:00 in the morning on a sunny, windless or slightly windy day. The absorption effect of tobacco leaves is better. The spraying method of tobacco leaves helps tobacco leaves directly absorb amino acids through the leaf surface. Compared with the traditional method of applying root fertilizers, it avoids the decomposition of amino acids by soil microorganisms, and the content of secondary metabolites (such as neophytadiene) increases by 5.47%~33.43%, and the synthesis efficiency of aroma substances is significantly improved. Ensure the stability of the spraying effect, avoid insufficient absorption of amino acids due to weather factors, and improve the practicality of the technical solution.

[0020] 5. In the present invention, according to the demand (the demand for enhancing the fragrance), an ornithine solution or a glutamic acid solution or a proline solution can be selected for spraying on the leaf surface of tobacco leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a result diagram for investigating the influence of different amino acid treatments on the sensory evaluation of cigar products. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present invention will be further described in detail below with reference to the embodiments, but the embodiments of the present invention are not limited thereto.

[0023] Selection of test plots and test samples The experiment was conducted in Shigu Town, Shifang City, Sichuan Province from April to August 2024. The experimental variety was the local main variety, Chuanxue No. 4. Nicotiana tabacum plants with good and relatively consistent growth were selected as experimental materials and divided into 4 groups with the same number of plants in each group. The amino acid solution was sprayed on the tobacco leaves according to the requirements of Examples 1-3 and Comparative Example 1 below, and the rest of the field management was carried out uniformly in accordance with the local "Production Technical Regulations for Cigar Tobacco Leaves".

[0024] Example 1 In this example, 40.0 g of ornithine (food-grade ornithine additive) reagent was weighed and dissolved in 20.0 L of tap water to prepare an ornithine solution with a mass concentration of 0.2%. During the mature period of tobacco leaves (starting from 10 days after budding), it was sprayed in the morning (8:00-10:00) on a sunny and windless day to avoid evaporation of the solution caused by high temperature and strong light, and it was sprayed only once.

[0025] A knapsack electric sprayer was used, and the nozzle was 30 cm away from the leaf surface to spray the front and back sides of the tobacco leaves until a uniform liquid film was formed on the leaf surface after uniform spraying on both sides. If it rains within 24 hours after spraying, it needs to be re-sprayed.

[0026] Example 2 In this example, 40.0 g of glutamic acid (reagent from Sinopharm Chemical Reagent Co., Ltd.) reagent was weighed and dissolved in 20.0 L of tap water to prepare a glutamic acid solution with a mass concentration of 0.2%. During the mature period of tobacco leaves (starting from 10 days after budding), it was sprayed in the morning (8:00-10:00) on a sunny and windless day to avoid evaporation of the solution caused by high temperature and strong light, and it was sprayed only once.

[0027] A knapsack electric sprayer was used, and the nozzle was 30 cm away from the leaf surface to spray the front and back sides of the tobacco leaves until a uniform liquid film was formed on the leaf surface after uniform spraying on both sides. If it rains within 24 hours after spraying, it needs to be re-sprayed.

[0028] Example 3 In this example, 40.0 g of proline (Fuzhou Feijing Biotechnology Co., Ltd.) reagent was weighed and dissolved in 20.0 L of tap water to prepare a proline solution with a mass concentration of 0.2%. During the mature period of tobacco leaves (starting from 10 days after budding), it was sprayed in the morning (8:00-10:00) on a sunny and windless day to avoid evaporation of the solution caused by high temperature and strong light, and it was sprayed only once.

[0029] A knapsack electric sprayer was used, and the nozzle was 30 cm away from the leaf surface to spray the front and back sides of the tobacco leaves until a uniform liquid film was formed on the leaf surface after uniform spraying on both sides. If it rains within 24 hours after spraying, it needs to be re-sprayed.

[0030] Comparative Example 1 In this comparative example, tap water was sprayed on the leaf surface. During the mature period of tobacco leaves (starting from 10 days after budding), spraying was carried out in the sunny and windless morning period (8:00 - 10:00). A knapsack electric sprayer was used, and the nozzle was 30 cm away from the leaf surface to spray both the front and back sides of the tobacco leaves until a uniform liquid film was formed on the leaf surface by uniform spraying on both sides.

[0031] After spraying and harvesting the middle leaves of cigars in each group above, according to the curing process of high-quality cigar tobacco leaves (see Table 1). After curing, it was put into a constant temperature and humidity box for fermentation, and the fermentation time was 25 days; the temperature of the constant temperature and humidity box was controlled at 43 °C, and the humidity was 80%. After fermentation, subsequent tobacco leaf measurements were carried out.

[0032] Table 1: Curing process of cigar tobacco leaves.

[0033] 1.2 Experimental design Four experimental groups need to be set up in this experiment. The first group (blank, comparative example 1), the second group (spraying ornithine solution with a mass concentration of 0.2%, example 1), the second group (spraying glutamic acid solution with a mass concentration of 0.2%, example 2), and the third group (spraying proline solution with a mass concentration of 0.2%, example 3).

[0034] 1.3 Determination indexes and methods 1.3.1 Sensory quality The other half of the fermented tobacco leaves were manually rolled into smoking samples with a length of 110 mm and a diameter of 14 mm. After aging and curing in a Binder constant temperature and humidity cabinet (KBF240, Binder Environmental Test Equipment Shanghai Co., Ltd.) at a temperature of 18 °C and a relative humidity of 70% for 4 months, they were used for smoking evaluation. Judges with industry sensory evaluation qualifications hired by the National Tobacco Cultivation Physiology and Biochemistry Research Base used the 9-point smoking evaluation method for cigar raw materials of China Tobacco Hubei Industrial Co., Ltd., Three Gorges Cigarette Factory (Table 2) for scoring, and the total score was calculated. The scoring rules and the total score calculation weight are shown in Table 2. The total score calculation formula is: , Among them, T is the sensory quality evaluation score; is the average score of a single index; is the weight of a single index.

[0035] Table 2: Sensory quality evaluation method for cigar tobacco leaves.

[0036] 1.3.2 Chemical components The total nitrogen, nicotine, protein, total sugar, reducing sugar, potassium-chlorine ratio, etc. of tobacco leaves were determined by continuous flow analysis using an AAⅢ type continuous flow chemical analyzer (BRAN+LUEBBE, Germany).

[0037] 1.3.3 Neutral aroma components The content of neutral aroma components in tobacco leaves was determined by an Agilent 7890B-5977E gas chromatography-mass spectrometry (GC-MS). Sample pretreatment process: Add 20 g of powdered tobacco leaves, 2 g of citric acid, and 600 mL of distilled water to a 1000 mL round-bottom flask, place it on one side of the simultaneous distillation device, and add 40 mL of dichloromethane and 1 mL of internal standard (nitrobenzene) to a 250 mL round-bottom flask on the other side. Place them in a 60 °C water bath simultaneously. Open the water valve and start timing when the sample boils and stratifies for 2.5 h. Collect the organic phase. Add about 10 g of anhydrous sodium sulfate, shake well and clarify, then transfer it to a pear-shaped flask, and concentrate the organic phase to about 1 mL in a 60 °C water bath.

[0038] The GC / MS analysis conditions are as follows.

[0039] Chromatographic column: HP-5 (60 m × 0.25 mm, 0.25 μm); Carrier gas and flow rate: Helium, 0.8 mL / min; Injector temperature: 250 °C; Transfer line temperature: 280 °C; Ion source temperature: 177 °C.

[0040] Temperature programming: 50 °C (2 min) → 2 °C / min → 120 °C (5 min) → 2 °C / min → 240 °C (30 min); Split ratio and injection volume: 1:15, 2 μL; Ionization energy: 70 eV; Mass number range: 50 - 500 amu; MS spectral library: NIST02.

[0041] 1.3.4 Sensory evaluation application The fermented cigar tobacco leaves were rolled into cigar products of Robusto size, with a length of 124 mm and a ring gauge of 50. The wrapper tobacco leaves were Yongzhou Cuba No. 7 in 2023, the binder tobacco leaves were Dominican Condega Habano in 2019, and the filler tobacco leaves were Nanping Haiyan 101 in 2024 and Chuanxue 4 in 2024 treated with different amino acids.

[0042] Evaluate the style characteristics and quality characteristics of cigar tobacco leaves according to a 9-point system. The style characteristics include woody fragrance, bean fragrance, floral fragrance, honey-sweet fragrance, fresh-sweet fragrance, caramel-sweet fragrance, baking fragrance, milk fragrance, hay fragrance, resin fragrance, fruity fragrance, herbal fragrance, nutty fragrance, leathery flavor, coffee flavor, pepper flavor and powder-fat flavor. The quality characteristics include aroma, richness, mildness, volatility, off-odor, sweet and moist feeling, irritation, aftertaste, combustibility, aftertaste, ash color and harmony.

[0043] 2 Test Results and Analysis 2.1 Examine the effects of different amino acid solutions on the sensory quality of cigar tobacco leaves, and the results are shown in Table 3.

[0044] Table 3: Sensory evaluation results of cigar tobacco leaves.

[0045] It can be seen from the sensory evaluation results of cigar tobacco leaves in Table 3 that after spraying the amino acid solution, the total scores of the sensory evaluation of cigar tobacco leaves have increased to varying degrees compared with Comparative Example 1. The total score of Example 3 is the highest. Specifically, the quality and quantity of the aroma have increased, the off-odor has decreased, the aftertaste is more comfortable, the combustibility is better, and the ash color has not changed significantly. This shows that the sensory quality of cigar tobacco leaves has been significantly improved after spraying the amino acid solution, and the effect is the best when spraying the proline solution.

[0046] 2.2 Examine the effects of different amino acid solutions on the chemical components of cigar tobacco leaves, and the results are shown in Table 4.

[0047] Table 4: Results of chemical components of cigar tobacco leaves As can be seen from Table 4, after spraying with different amino acid solutions, the total nitrogen content of cigar tobacco leaves decreases, the total sugar, reducing sugar contents and potassium-chlorine ratio increase, and the nicotine content changes slightly.

[0048] Compared with Comparative Example 1, the total nitrogen contents of Examples 1, 2, and 3 decreased by 2.24%, 4.76%, and 0.28% respectively, while the ranges of increase in the total sugar and reducing sugar contents were 17.78% - 28.89% and 0.00 - 20.00%, which can lead to a more mellow taste of cigar tobacco leaves. The potassium-chlorine ratios of each example group increased to varying degrees, with Example 2 being the highest. Compared with Comparative Example 1, the protein content increased in Example 1 after spraying the amino acid solution, while it decreased in Examples 2 and 3. Generally speaking, after spraying the amino acid, the total sugar and reducing sugar contents increase. At this time, the carbon metabolism of the tobacco plant is enhanced, the degradation of starch is accelerated, and at the same time, the secondary metabolism of the tobacco plant is promoted, and the tobacco leaves synthesize more small-molecule substances related to aroma quality.

[0049] 2.3 Examine the effects of different amino acid solutions on the degradation products of phenylalanine in cigar tobacco leaves, and the results are shown in Table 5 for reference.

[0050] Table 5: Results of phenylalanine degradation products in cigar tobacco leaves.

[0051] The metabolic transformation of phenylalanine is one of the important processes affecting the aroma of tobacco. Benzaldehyde (almond and sweet aroma), benzyl alcohol (mellow aroma), phenylacetaldehyde (rose flower aroma), and phenylethyl alcohol (fruit aroma) produced by its degradation are relatively abundant aroma components in tobacco.

[0052] As can be seen from Table 5, the total amount of phenylalanine degradation products in cigar tobacco leaves increased after spraying the amino acid solution, and the total amount in Example 3 was the highest at 37.66 mg / kg, indicating that spraying amino acids can increase the phenylalanine degradation products in cigar tobacco leaves. Among them, the benzyl alcohol contents in Examples 1, 2, and 3 were 1.93 times, 1.45 times, and 2.14 times that of Comparative Example 1, respectively, and the phenylethyl alcohol contents in the above treatments increased by 121.99%, 46.66%, and 63.15%, respectively.

[0053] In summary, after spraying amino acids, the contents of benzyl alcohol and phenylethyl alcohol, the important aromatic amino acid-derived aroma compounds in cigar tobacco leaves, increased the most. It can be seen that after spraying the reagent in the present invention on the leaf surface of tobacco leaves, the mellow and fruit aroma of cigar tobacco leaf smoke can be increased, and the sensory quality of cigar tobacco leaves can be improved.

[0054] 2.4 Investigate the effects of different amino acid solutions on the browning reaction products of cigar tobacco leaves, and the results are shown in Table 6.

[0055] Table 6: Results of browning reaction products in cigar tobacco leaves.

[0056] As can be seen from Table 6, different amino acid solutions had a greater impact on the browning reaction products of cigar tobacco leaves, and the total amount of browning reaction products increased to varying degrees, with the total amount in Example 3 being the highest at 15.87 mg / kg. The aroma characteristics of furfural are citrus and fatty flavors, and furfuryl alcohol has an obvious caramel coffee flavor. Among them, the furfural, furfuryl alcohol, and 3,4-dimethyl-2,5-furandione in Examples 1, 2, and 3 increased more significantly compared with Comparative Example 1, being about 1.24 - 1.51 times, 6.00 - 9.40 times, and 1.46 - 188 times, respectively. The 5-methylfurfural content in Examples 2 and 3 increased compared with Comparative Example 1, with the largest increase in Example 3, with an increase of 29.56%.

[0057] Generally speaking, the browning reaction products of cigar tobacco leaves sprayed with different amino acid solutions increased, which is beneficial to improving the aroma of cigar tobacco leaves.

[0058] 2.5 Investigate the effects of different amino acid solutions on the carotenoid degradation products of cigar tobacco leaves, and the results are shown in Table 7.

[0059] Table 7: Results of carotenoid degradation products in cigar tobacco leaves.

[0060] Carotenoids are one of the most important terpene compounds in tobacco and are important components of neutral aroma substances. Among them, linalool, geranylacetone, megastigmatrienone, and farnesylacetone have woody and floral characteristics, and β-damascenone can increase the pleasant rose aroma.

[0061] As can be seen from Table 7, the carotenoid degradation products in each example are higher than those in Comparative Example 1. Among them, except for the contents of linalool and farnesylacetone, the contents of the other carotenoid degradation products are the highest in Example 3.

[0062] Comprehensively analyzed, different amino acid solutions have varying degrees of improvement effects on the carotenoid degradation products in cigar tobacco leaves, and the effect is best when spraying proline solution.

[0063] 2.6 Investigate the effects of different amino acid solutions on the cembrane degradation products in cigar tobacco leaves, and the results are shown in Table 8.

[0064] Table 8: Results of cembrane degradation products in cigar tobacco leaves.

[0065] Solanone is an important flavor component of cembrane degradation products, and most of its reaction products have flavors.

[0066] As can be seen from Table 8, the effects of spraying different amino acid solutions on the solanone content in cigar tobacco leaves are not the same. The solanone content is the highest in Example 3, followed by Example 1. Compared with Comparative Example 1, the solanone contents increased by 89.72% and 37.29% respectively. The solanone content in Example 2 decreased compared with Comparative Example 1, indicating that spraying glutamic acid solution has no obvious effect on the solanone content.

[0067] 2.7 Investigate the effects of different amino acid solutions on neophytadiene in cigar tobacco leaves, and the results are shown in Table 9.

[0068] Table 9: Results of neophytadiene in cigar tobacco leaves.

[0069] Neophytadiene is a degradation product of chlorophyll and is also the most abundant aroma component in neutral aroma substances, which has the functions of improving the taste of tobacco leaves, mellowing the smoke, and reducing irritation.

[0070] As can be seen from Table 9, the content of neophytadiene in cigar tobacco leaves increased after spraying different amino acid solutions. The content was the highest in Example 3, which was 610.14 mg / kg. Compared with Comparative Example 1, the contents in Examples 1, 2, and 3 increased by 18.89%, 5.47%, and 33.43% respectively. Generally speaking, spraying proline solution had the greatest impact on the content of neophytadiene in cigar tobacco leaves, while spraying glutamic acid had a relatively small impact on the content of neophytadiene in cigar tobacco leaves.

[0071] 2.8 Investigate the influence of different amino acid treatments on the sensory evaluation of cigar products. The results are shown in Figure 1 .

[0072] As Figure 1 can be seen, in terms of style characteristics, it is mainly characterized by woody, bean, floral, and honey-sweet aromas. After spraying amino acids, the honey-sweet, baked, and fruity aromas of cigar products in different treatments increased to varying degrees. Among them, the woody and baked aromas in Example 3 were the highest, reaching 6.0 and 4.5 points respectively. The floral and honey-sweet aromas in Example 2 were the highest, reaching 5.0 and 5.5 points respectively. Among the quality characteristics of cigar products in different treatments, the aroma, richness, and coordination of each tobacco leaf after spraying amino acids were significantly increased in the cigar products. Among them, the aroma was the highest in Example 2, reaching 6.0 points, and the coordination was the highest in Example 3.

[0073] It can be concluded that in the present invention, spraying cigar tobacco leaves with three different amino acid solutions of ornithine, glutamic acid, and proline can effectively improve their sensory quality.

[0074] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A reagent for enhancing the aroma and quality of cigar tobacco leaves, characterized in that: It includes an ornithine solution with a mass concentration of 0.1 - 0.3%, or a glutamic acid solution with a mass concentration of 0.1 - 0.3%, or a proline solution with a mass concentration of 0.1 - 0.3%.

2. Application of a reagent for enhancing aroma and improving quality of cigar tobacco leaves in the preparation of cigar tobacco leaf fertilizers as described in claim 1.

3. The application according to claim 2, characterized in that: Spray the reagent solution for enhancing aroma and improving quality of cigar tobacco leaves on the leaf surface of the tobacco leaves during the maturity period of the tobacco leaves at 8:00 - 10:00 in the morning when it is sunny, windless or with gentle breeze until a uniform liquid film is formed on the leaf surface of the tobacco leaves.

4. The application according to claim 2, characterized in that: Use a knapsack sprayer to spray on both the front and back of the tobacco leaves. The nozzle of the sprayer is 30 - 40 cm away from the leaf surface of the tobacco leaves. If it rains within 24 hours after spraying the reagent solution, re - spraying is required.

5. The application according to claim 2, characterized in that: Spray the tobacco leaves with a proline solution with a mass concentration of 0.1 - 0.3% to increase the aroma - forming components of almond aroma, sweet aroma, mellow aroma, fruit aroma and rose flower aroma in cigar tobacco leaves.

6. The application according to claim 2, characterized in that: Spray the tobacco leaves with a proline solution with a mass concentration of 0.1 - 0.3% to increase the content of browning reaction products in cigar tobacco leaves.

7. The application according to claim 2, characterized in that: Spray the tobacco leaves with an ornithine or proline solution with a mass concentration of 0.1 - 0.3% to increase the contents of linalool and farnesyl acetone in cigar tobacco leaves.

8. The application according to claim 2, characterized in that: Spray the tobacco leaves with a proline or ornithine solution with a mass concentration of 0.1 - 0.3% to increase the content of solanone in cigar tobacco leaves.

9. The application according to claim 2, characterized in that: Spray the tobacco leaves with a proline or ornithine solution with a mass concentration of 0.1 - 0.3% to increase the content of neophytadiene in cigar tobacco leaves.

10. The application according to claim 2, wherein: Spray the tobacco leaves with a glutamic acid solution with a mass concentration of 0.1 - 0.3% to enhance the honey - sweet aroma and floral fragrance of cigar products.

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