KR100479021B1 - Method for obtaining bamboo leaf extract - Google Patents

Abstract

The present invention relates to a method for extracting bamboo leaf extract, and specifically, selected bamboo leaves are dried and pulverized to a suitable size, and then immersed in a soaked solvent for a predetermined time to remove the soaked soybean. The present invention relates to an extraction method of obtaining bamboo leaf extract by heating, which is capable of automatic production on an industrial scale as compared to the conventional method of taking water, and obtains high concentration of bamboo leaf extract in high quality. It can be used in various ways such as quasi products, cosmetics, functional foods and special nutrition foods.

Description

Extraction method of bamboo leaf extract {Method for obtaining bamboo leaf extract}

The present invention relates to a method and apparatus for extracting bamboo leaf extract, and specifically, an extraction tank provided with an external heating jacket to heat selected bamboo leaves after drying and grinding them to a suitable size to maintain a constant temperature. The present invention relates to a method and apparatus for extracting bamboo leaf extract by injecting a soaked solvent into the extraction tank at a constant speed to soak bamboo leaves, and applying heat for a predetermined time after releasing the solvent to the outside of the extraction tank.

Bamboo is a perennial plant belonging to Gramineae, and it is distributed in 400 kinds all over the world, and its use is very diverse from construction materials, furniture materials, fishing rods, plant supports, and bamboo products such as baskets.

In addition, the pharmacological effect of porridge is already widely known in oriental medicine, and has been used in a variety of folk remedies by showing unique therapeutic effects in each area. Specifically, kill the dried shell of the king (竹茹); Bamboo root, bamboo root; Bamboo Sulfur, a pressed, whiteish film of a dynasty; Juksil, the seed of the royal fruit; And juices obtained by roasting stems with fire are known to have pharmacological activity such as bamboo, which is similar in form to human essences.

It is the middle layer of bamboo stems to kill. It removes the upper epidermis of bamboo and scratches the white cuticle. It is used to feel pain (heating: 煩熱), non-bleeding (鼻 出血), bleeding (吐血), etc. When the stomach is stuffy, it releases (Haeul: 解鬱) or suppresses vomiting (earth: 止嘔). have. Bamboo roots are thirsty ((), calm the excitement (하기: 氣), detoxify (소), Sodam (消痰), anxious (안 胎) has the action of , Juksil has the action of communication name (通 神明), godliness (經 身). Bamboo (Bambusae Calulis in Liquamen) has been used for paralyzed strokes, bad speech or wind-like symptoms and strokes. (Summary: 行 痰 要 藥) It has the effect of rhythmic tone, and it is used for stroke-like sound (中風 失音 不 語), palsy (中風), and language disorder (detention: 口 禁). Temper is cold, sweet, bitter, ear is heart, lung, stomach.

In particular, bamboo leaves are picked with green leaves in the summer and dried in a well-ventilated shade to be used as medicinal herbs. The effect is to act on the heart, liver, stomach, etc. to spute phlegm (small fever), to lower the heat of fever (big fever :), to stop thirst (galgal: 止)渴), to facilitate urination (diuresis: 利尿), to help sleep (face: 安眠) action, and recently has been reported to have anti-inflammatory, anti-ulcer, central inhibition and heavy metal detoxification.

Since ancient times, bamboo leaves have been harvested from young bamboo leaves and dried and steamed to make bamboo tea easily. come. However, the bamboo leaf tea, bamboo leaf cheongju, and bamboo leaf noodles are all made by hand, and the amount of processing time is small, and the time required for the manufacturing process is considerable, and the production and quality are dependent on the manufacturer's technology. It is very backward.

Jeong (Jeong Hee-jong et al., Research on the health-efficiency ingredients of bamboo, 1994) and the like demonstrated that the bamboo leaf is a low-calorie food having a high taste and aroma and a high dietary fiber.

Republic of Korea Patent Application No. 2000-17469 describes bamboo tea that is good for drinking by mixing the bamboo shoots, bamboo leaves and bamboo roots through a separate process and then processed into a powder to be mixed at an appropriate mixing ratio.

In addition, Korean Patent Application No. 1999-18552 uses bamboo leaf liquid and bamboo leaf powder obtained through steaming at high temperature after processing to add noodles or confectionery or rice to noodles, confectionery, or rice to obtain the flavor. It is described.

Hu C et al, J. Agric. Food Chem ., 200 Aug; 48 (8): 3170-6) are known as chlorogenic acids in solvent extracted bamboo leaf extract (BLE), Caffeic acid and luteolin 7-glycoside (luteolin 7-glucoside) is contained, it was confirmed that the extract exhibits the antioxidant activity (anitioxidant activity) and prooxidant activity (prooxidant activity).

Therefore, the present inventors endeavored to develop an extraction method suitable for a mass production system in order to effectively use bamboo leaves having various physiological activities, so that all the manufacturing processes can be automated and processed in large quantities at a time, and the time required for the manufacturing process is significantly shortened. The present invention was completed by developing a method of extracting bamboo leaves.

An object of the present invention is to provide an extraction method that can be obtained in high quality bamboo leaf extract excellent in pharmacological activity.

Another object of the present invention is to provide a use of the bamboo leaf extract obtained as a pharmaceutical, quasi-drug, cosmetics, functional food or special nutrition food.

In order to achieve the above object, the present invention

After carefully selected bamboo leaves are dried and crushed to a suitable size and immersed in a soaked solvent for a certain period of time to remove the soaked solvent to provide an extraction method to obtain a bamboo leaf extract by heating the moderately called bamboo leaves to a high temperature.

Hereinafter, the present invention will be described in more detail (see FIGS. 1 and 2).

a) collection and pretreatment of bamboo leaves

Collect bamboo leaves from bamboo, remove debris from epidermis, wash with water and dry in shade. At this time, bamboo leaf is any bamboo can be used for edible, and is not particularly limited in the present invention, for example, it is preferable to use the native and easy to buy, in the case of Korea Bamboo porridge, lichen genus and genus genus.

b) soaking process

The powdered bamboo leaves obtained above are immersed sufficiently in soaking solution and then immersed for 8 to 16 hours at room temperature. In this case, the soaking solvent may be a C ₁ to C ₄ lower alcohol, water alone or a mixture thereof, and preferably a ethanol / water mixed solvent. The mixing ratio of the mixed solvent is 3: 1 to 4: 1 by weight of ethanol to water to increase the extraction effect.

After immersion, the soaking solution is removed by a conventional method such as filtration.

c) extraction process

The bamboo leaf extract is extracted by applying heat to the bamboo leaf powder sufficiently called by the soaking solution. At this time, the extraction process is performed for 8 to 16 hours at 50 ~ 70 ℃.

The resulting bamboo leaf extract can be obtained as an oily, highly concentrated extract. It is possible to obtain a high quality bamboo leaf extract compared to the concentration of the filtrate after conventional solvent extraction.

The apparatus for obtaining the bamboo leaf extract of the present invention is not limited in the present invention, as shown in FIG. 2, for example, the extraction tank 100, the solvent storage tank 200, the oil pump (100c) equipped with a thermal jacket (100c) An apparatus consisting of an oil tank 300 having a 300c) and a solvent storage tank 400 discharged therefrom may be used.

Specifically,

The apparatus used in the present invention is largely divided into four parts,

It is composed of a body (100a) and a cover (100b) to perform the extraction process, the outside of the body (100a) is provided in a form surrounded by a thermal jacket (100c) for heating to a predetermined temperature, the thermal jacket (100c) Fill the inside with oil, the solvent inlet 100e is located in the upper center of the cover (100b) to inject the soaking solvent, the outlet 100f is located in the lower center of the body (100a) to discharge the solvent after soaking bamboo leaves An extraction tank 100;

A solvent storage tank 200 having an inlet pipe 200a connected to the solvent inlet 100e of the extraction tank 100 to inject a soaked solvent into the extraction tank 100 has an upper end of the extraction tank 100. Located in;

In order to supply the heated oil inside the heat jacket 100c in order to control the temperature inside the extraction tank 100, the heat jacket 100c is injected through the oil feed pipe 300a and the outlet ports are respectively oil boiler ( 300b) and the oil pump 300c, but the oil heated by the oil boiler 300b is stored in the oil tank 300 and the thermal jacket 100c in a forced circulation method by the oil pump 300c. Injected into; And

It includes a solvent storage tank 400 connected to the solvent outlet 100f and the transfer pipe 400a located in the lower center of the extraction tank 100 to recover the soaked solution injected into the extraction tank 100.

In addition, the apparatus is provided with temperature sensors 100d and 300d, respectively, at the top of the extraction tank cover 100a and the predetermined position of the oil boiler 300b for measuring the internal temperature.

Therefore, the description is made by applying the extraction method of the present invention to the apparatus,

The bamboo leaf powder, consisting of a body (100a) and a cover (100b) and is provided with a heat jacket (100c) for applying heat to the outside of the body (100a), the temperature sensor 100d for measuring the internal temperature is Inject into the extraction tank 100 provided.

Subsequently, a soaking solvent is injected into the extraction tank 100 so that bamboo leaf powder is sufficiently submerged. At this time, the soaking solvent is injected from the solvent tank 200 located on the top of the extraction tank 100, and is injected into the extraction tank 100 through the solvent injection port (100e) through the solvent transfer pipe (200a).

When the soaking process is completed, the used solvent is removed from the extraction tank 100, and discharged through the solvent outlet 100f located in the lower center of the extraction tank 100, and the discharged solvent passes through the transfer pipe 400a. The storage tank 400 is stored.

The extraction process is performed for 8 to 16 hours at the temperature of the extraction tank 100 at 50 ~ 70 ℃, circulating the heated oil in the heat jacket (100c, heat jacket) provided on the outside of the extraction tank body (100a) Is done. The oil is heated by the oil boiler (300b) and transferred to the oil tank (300) via the oil transfer pipe (300a), and injected into the thermal jacket (100c) by a forced circulation method to transfer to the oil pump (300c) again. do. As a result of the circulation of the heated oil, the heat jacket 100c is maintained at a constant temperature, thereby enabling uniform heat supply in the extraction tank 100. In addition, in order to control the temperature inside the extraction tank 100 is carried out by continuously measuring the temperature sensor 100d provided in the extraction tank 100 and the temperature sensor 300d provided in the oil boiler 300b. do.

After the extraction process is completed, a dark turquoise bamboo leaf extract is obtained from the extraction tank 100. Therefore, the extraction method of the present invention can be significantly shortened in time compared with the conventional method of immersing in water or ethanol for at least 10 days.

The bamboo leaf extract can also be used as a liquid itself, it is possible to recover the bamboo leaf in a turquoise powder state through a drying process. At this time, the drying method used is conventional, and spray-drying or freeze-drying is used. The powdered bamboo leaves may be prepared in fine powder or granule form by pulverizing to a predetermined size by passing through a grinder.

Bamboo leaves recovered in liquid or powder form through the above-described process can be used in various fields, and can be used as raw materials for medicines or quasi-drugs and cosmetics, and can be suitably used for health supplements and special nutritional products. . As a result, antimicrobial, antioxidant and heavy metal removal effects of bamboo leaves can be obtained, and treatment and prevention effects such as vomiting, insomnia and hemostasis can be obtained.

Bamboo leaf extract referred to in the present invention has been drinking as bamboo leaf tea and bamboo leaf wine, etc., and its medicinal effect is also known, it can be said that it is applicable to the human body without mentioning the toxicity.

Bamboo leaves recovered in the form of liquid or powder through the above-described process can be used in various fields, and can be used as bamboo leaves tea by dissolving it in water and drinking it; Raw noodles manufacturing; Beverage composition; It can be used as an additive in all food fields such as rice herbs.

In addition, various pharmacological effects on bamboo leaves are already known, and powders containing high concentrations of pharmacological components contained in bamboo leaves can be suitably used for dietary supplements or special nutritional products. Therefore, it is possible to obtain the effects of bamboo leaf digestion, refreshment, wind heat, poisoning, sleep or stroke.

In particular, since bamboo leaf has an antioxidant activity, it can be suitably used as a raw material for cosmetics and the like, and can be prepared as a flexible lotion, milk lotion, massage cream, essence, cleansing foam, cleansing water, pack or body oil. It is also applicable to color cosmetics such as foundation, lipstick, mascara or makeup base and hair cosmetics such as shampoo, rinse, hair conditioner and hair gel. Preferred examples of the cosmetics are described in the preferred embodiment of the present invention, and it was confirmed that a stable emulsion was formed. Cosmetics, including bamboo leaf extract of the present invention can be obtained by using a vegetable raw material is gentle, gentle and immediate effect compared to the conventional chemicals harmful to humans and severe side effects.

Therefore, the extraction method of the present invention avoids the method of ingesting pharmacological ingredients in bamboo leaves by conventional methods, and can simplify the intake method in various food forms, and is applicable to the main raw materials of cosmetics as well as in automated processes. It is suitable for mass production. In particular, the bamboo leaf extract obtained by the method of the present invention is high purity and does not require a separate purification process and can be directly applied directly to raw materials such as cosmetics.

Hereinafter, the present invention will be described in detail by way of examples.

The following examples are intended to illustrate the invention and are not intended to limit the scope of the invention.

Example 1 Extraction of Bamboo Leaf Extract

Bamboo leaf extract was extracted using the apparatus shown in FIG.

Step a) Pretreatment of Bamboo Leaf

300 kg of bamboo leaves were collected from Phyllostachys nigra, washed with water, dried in the shade, and then injected into the 2,200 L extraction tank 100.

Step b) soaking process

Ethanol and water as a soak solution were fed into the extraction tank 100 into which bamboo leaves were injected at a ratio of 3: 1, and then immersed at room temperature for 12 hours, and then the soak solution was discharged to the solvent storage tank 400.

Step c) extraction process

The extraction process was performed by maintaining the internal temperature of the extraction tank 100 containing the bamboo leaves for 12 hours at 60 ℃. At this time, the heating was controlled by applying heat to the oil using the oil boiler (300b) to transfer to the heat jacket (100c) of the extraction tank 100, and check the temperature every predetermined time using the temperature sensor (100d, 300d). It was.

After completion of the extraction process was recovered bamboo leaf extract of high concentration having a turquoise.

Preparation Example 1 Application of Bamboo Leaf Extract

The extract obtained in Example 1 was extracted in a powder state using a freeze dryer, and then applied to various food products as follows.

1) Bamboo tea

The bamboo leaf powder was added to water at 90 ° C. and then drinked. Then, the bamboo leaf powder was dried and pulverized according to the conventional method for comparison. As a result, the taste and aroma of bamboo leaf tea made from bamboo leaf powder were equal or more than those of the conventional one.

2) bamboo leaf

5 g of the bamboo leaf powder and 100 g of wheat flour were mixed, and then kneaded in a conventional manner to prepare noodles. Kalguksu was prepared in the same manner using only flour for comparison. Noodles with bamboo leaf powder added the green color to the appetite, and the fresh feeling of chewing increased the texture and unique flavor.

Through the experiment it was found that the bamboo leaf powder obtained by the process of the present invention can be used to prepare a variety of foods, it was found to maintain the unique flavor and unique flavor of bamboo leaves.

The bamboo leaf extract powder prepared in the above example was extracted for 5 minutes in hot water at 80 ° C. and then subjected to sensory test by rank method by 10 trained sensory test agents, and the results are shown in Table 1 below. In addition, the bamboo leaf noodles prepared above were also put in boiling water at 100 ° C., and then seasoned with salt to prepare bamboo leaf noodles, and the sensory test was performed in the same manner.

Sensory Evaluation by Bamboo Tea Ranking: Taste, Aroma and Overall Palatability One 2 3 4 5 6 7 8 9 10 flavor 2 3 2 2 3 3 3 3 3 2 Scent 3 3 3 2 3 3 3 2 3 3 Palatability 2 3 2 2 3 3 3 3 3 3  1: bad 2: moderate 3: excellent

Sensory test by bamboo leaf noodle ranking method: taste, aroma and overall palatability One 2 3 4 5 6 7 8 9 10 Texture 3 3 2 2 2 2 3 3 2 3 zest 3 3 3 2 3 3 3 3 3 2 Palatability 3 3 3 2 2 3 3 3 3 3  1: bad 2: moderate 3: excellent

3) Bamboo leaf lotion (100 g standard)

Bamboo leaf lotion was prepared by mixing the compositions shown in the following table.

ingredient content Bamboo Leaf Extract 0.25 Stearic acid 0.5 ethanol 10.0 Vaseline 1.0 Squalane 2.5 Floating paraffin 6.0 Polyoxyoleic Acid Polyoxyethylene Sorbitan 1.5 1,3-butylene glycol 8.0 Sodium Ethylenediaminetetraacetic Acid 0.05 Triethanolamine 0.8 Spices 0.2 antiseptic Quantity Purified water Balance

4) Bamboo leaf essence (100 g standard)

Bamboo leaf essence was prepared by mixing the composition shown in the following table.

ingredient Content (g) Bamboo Leaf Extract 3.00 glycerin 5.50 Allantoin 0.10 Ethylenediaminetetradiacetic acid sodium 0.01 Dipotassium glycyrrhinate 0.10 Hydrogenated Castor Oil 0.10 Hyaluronic Acid Extract (0.5%) 8.00 d-panthenol 0.50 Imidazolidinylurea 3.00 Butylene glycol 3.50 Methylparaben 0.10 Xanthan Gum 0.50 Triethanolamine 0.06 Spices 0.10 Purified water 78.33

5) Bamboo leaf eye cream (100 g standard)

Bamboo leaf eye cream was prepared by mixing the compositions shown in the following table.

ingredient Content (g) Bamboo Leaf Extract 2.00 Butylene glycol 7.00 Methylparaben 0.10 Sodium magnesium silicate (5%) 5.00 glycerin 1.00 Allantoin 0.10 Dipotassium glycyrrhinate 0.10 Hyaluronic Acid Extract (0.5%) 5.00 Parthenol 0.10 Triethanolamine 0.20 Cetostearyl alcohol 3.20 Stearic acid 2.20 Lipophilic monostearate 2.00 PEG 40 Stearate 1.20 Sesquioleic acid sorbitan 1.50 Floating paraffin 4.00 Squalane 3.80 Capryl, Capric Acid Triglycerides 2.80 Polysorbate 60 1.50 Retinyl palmitate 0.30 Shea Butter 0.30 Tocopherol Acetate 0.20 Dimethicone 0.40 Eichparaben 0.10 Propylparaben 0.05 Spices 0.20 Purified water 55.65

6) Instant nutrition cream (100 g standard)

The bamboo leaf nutrition cream was prepared by mixing the compositions shown in the following table.

ingredient Content (g) Bamboo Leaf Extract 2.00 Butylene glycol 7.00 Xanthan Gum 0.05 Methylparaben 0.10 Sodium Magnesium Silicate (5%) 5.00 glycerin 1.00 Allantoin 0.10 Dipotassium glycyrrhinate 0.10 Hyaluronic Acid Extract (0.5%) 5.00 Panthenol 0.10 Triethanolamine 0.20 Cetostearyl alcohol 3.00 Stearic acid 2.00 Lipophilic Monostearic Acid Glycerin 2.00 PEG 40 Stearate 1.20 Sesquioleate sorbitan 1.50 Liquid paraffin 4.00 Squalane 3.80 Capryl, Capric Acid Triglycerides 2.80 Polysorbate 60 1.50 Macadamia oil 1.50 Shea Butter 0.30 Tocopherol Acetate 0.20 Dimethicone 0.40 Eichparaben 0.10 Propylparaben 0.05 Spices 0.20 Purified water 54.80

Therefore, according to the present invention, it was possible to extract high quality bamboo leaf extract in high concentration, and it is preferably applicable to mass production system according to the automation of the process. Not only can it be used, it can also be applied to foods that retain the flavor and unique taste of bamboo leaves.

1 is a block diagram illustrating each step of the extraction method of the present invention.

2 is a diagram illustrating an example of an apparatus to which the extraction method of the present invention can be applied.

* Description of the symbols for the main parts of the drawings *

100: extraction tank 100a: tank body

100b: tank cover 100c: thermal jacket

100d: temperature sensor 100e: solvent inlet

100f: solvent outlet 200: solvent storage tank

200a: solvent transfer pipe 300: oil tank

300a: oil feed pipe 300b: oil boiler

300c: oil pump 300d: temperature sensor

400: solvent recovery tank 400a: solvent transfer pipe

Claims (8)

After removing the outer skin of the selected bamboo stand, the bamboo leaf obtained by drying the intermediate layer was immersed in the soaking solvent for a predetermined time to remove the soaking solvent; And Extraction method which obtains bamboo leaf extract by heating moderately called bamboo leaf to high temperature. The method according to claim 1, wherein the soaking solvent is selected from the group consisting of C ₁ to C ₄ lower alcohols, water and mixtures thereof. The method according to claim 1, wherein the soaking solvent is a mixed solvent of ethanol and water. 4. A process according to claim 2 or 3, wherein C ₁ -C ₄ lower alcohols to water are mixed in a weight ratio of 3: 1 to 4: 1 when the solvent is mixed. The method of claim 1, wherein the immersion is carried out at room temperature for 8 to 16 hours. The method of claim 1, wherein the extraction is carried out at 50 to 70 ℃ for 8 to 16 hours. A cosmetic composition comprising the bamboo leaf extract obtained by the method of claim 1 as an active ingredient. A food composition comprising the bamboo leaf extract obtained by the method of claim 1 as an active ingredient.