TW201904592A - Green propolis extraction method - Google Patents

Abstract

The present invention provides an extraction method of green propolis, which mainly comprises the following steps: the multi-level ultrasonic extraction, the preparation of concentrated green propolis solution, the preparation of green propolis propylene glycol solution, the preparation of green propolis extract and the dewaxing. Thereby, a green propolis raw solution is prepared. The green propolis extracting method disclosed in the present invention can not only obtain a green propolis raw solution having high concentration and high purity, but also can achieve the effects of reducing production cost and improving industry utilization.

Description

Extraction method of green propolis

The invention relates to a food processing method, in particular to a method for extracting green propolis.

According to the press, propolis is a gelatinous substance formed by bees mixing the secreted saliva and plant secretions during the process of collecting food. It has antibacterial, disease prevention, anti-parasite, anti-inflammatory, and immune enhancement functions. In recent years, research has found that the effectiveness of propolis is related to its various plant components, such as phenolic compounds, flavonoids, coumarins, caffeic acid, and quinones.

In order for propolis to be commercialized, the effective ingredients in it must be separated through an extraction process. At present, most manufacturers choose to use water as the extraction solvent in order to avoid the residual of organic solvents in the extract and consider the extracted ingredients. However, most of the plant components in propolis are insoluble in water, so that the content of active ingredients in the extract is too small to exert its effect; some manufacturers will use good alcohol as an extraction solvent to separate insoluble water from propolis. However, the propolis extract obtained by simply using alcohol for extraction is not only too low in purity, but also irritating and unacceptable to consumers.

The main object of the present invention is to provide a method for extracting green propolis, which can extract high-quality and high-concentration propolis ingredients, and improve the lack of low extraction rate in the conventional technology, so that propolis can be applied economically. In the industry.

Another object of the present invention is to provide a method for extracting green propolis, which can recover the extraction solvent for recycling during the extraction process, and use the residue to make propolis related products, so as to achieve the effect of reducing extraction costs and environmental protection.

The reason is that in order to achieve the above object, the extraction method of green propolis disclosed in the present invention includes the following steps:

Step a: Take a green propolis block, place it in a predetermined concentration of alcohol, and perform extraction at a temperature lower than 50 ° C. The extracted solution is filtered to form a green propolis filtrate and a green propolis wax.

Step b: The green propolis filtrate is concentrated to form a green propolis concentrated solution.

Step c: The green propolis concentrated solution is mixed with a propylene glycol solvent to form a green propolis propylene glycol solution, wherein the weight ratio of the green propolis concentrated solution to the propylene glycol solvent is 1: 1.

Step d: separating and concentrating the green propolis propylene glycol solution to form a green propolis extract.

Step e: mixing the green propolis extract with triglyceride to form a green propolis / triglyceride mixed solution, and then separating a green bee collagen solution and a wax from the green propolis / triglyceride mixed solution Oil mixture, wherein the weight ratio of the green propolis extract to the triglyceride is 2: 1.

Wherein, the step a is performed by a multi-level ultrasonic frequency conversion extraction method.

For example, step a further includes the following steps:

Step a1: mixing the green propolis block with 95% by weight alcohol, performing ultrasonic frequency conversion extraction at 30-50 ° C, and filtering to form a first extract solution and a first precipitate;

Step a2: Take the first precipitate and mix it with alcohol having a concentration of 95% by weight, perform ultrasonic variable frequency extraction at 30-50 ° C, and filter to form a second extract and a second precipitate;

Step a3: Take the second precipitate and mix it with 95% by weight alcohol, perform ultrasonic frequency conversion extraction at 30-50 ° C, and filter to form a third extract and the green propolis wax;

Step a4: Collect the first to third extracts obtained in the above steps to form the green propolis filtrate.

Moreover, in the embodiment of the present invention, steps b and d are performed by a constant temperature and reduced pressure concentration method, and for example, step b or step d is performed under reduced pressure concentration under the following conditions: the temperature is 55-65 ℃, negative pressure 300 ~ 400mmHg.

With the extraction method of green propolis disclosed in the present invention, after step b and / or step d is completed, the remaining alcohol can be recovered for use as an extraction solvent again.

Hereinafter, an embodiment of the present invention will be described in conjunction with the drawings for further description.

Please refer to the first figure. The extraction method of green propolis disclosed in one embodiment of the present invention is to extract green propolis unique to Taiwan, which mainly includes the following steps:

Step 100: The resin is removed from a green propolis block by a multi-level ultrasonic frequency conversion extraction method, which comprises the following steps:

Step 101: First extraction

The green propolis block was mixed with alcohol having a concentration of 95% by weight in a ratio of 1: 3 by weight. Ultrasonic frequency conversion extraction was performed at 30-50 ° C for about 1 hour, and the filter was allowed to stand for 24 hours to form a first extraction. Liquid and a first precipitate.

Step 102: Second extraction

The first precipitate was mixed with 95% by weight alcohol at a ratio of 3: 5 by weight, and ultrasonic frequency conversion extraction was performed at 30-50 ° C for about 1 hour. After filtering, it was left for 24 hours to form a second An extract and a second precipitate;

Step 103: Third extraction

The second precipitate was mixed with 95% by weight alcohol at a ratio of 1: 3 by weight. Ultrasonic frequency conversion extraction was performed at 30-50 ° C for 1 hour, and the filter was left for 24 hours to form a third extract solution. And a green propolis wax;

Step 104: Collect the filtrate

The first to third extracts obtained in steps 101 to 103 are collected to form a green propolis filtrate.

Step 200: Prepare a concentrated green propolis solution

The green propolis filtrate obtained in step 100 is concentrated at a temperature of 55 to 65 ° C. and a negative pressure of 300 to 400 mmHg, and a green propolis concentrated solution is separated to obtain an alcohol.

Step 300: Preparation of a green propolis propylene glycol solution

The green propolis concentrated solution obtained in step 200 and the food grade propylene glycol solvent are mixed uniformly at a ratio of 1: 1 by weight, and placed in an ultrasonic vibration machine for about 10 minutes to form a green propolis propylene glycol solution.

Step 400: preparing green propolis extract

The green propolis propylene glycol solution obtained in step 300 is concentrated at a temperature of 55 to 65 ° C. and a negative pressure of 300 to 400 mmHg, and a green propolis extract is separated and obtained.

Step 500: Dewaxing

The green propolis extract obtained in step 400 and the food grade triglyceride are uniformly mixed in a weight ratio of 2: 1, and placed in an ultrasonic vibration machine for about 10 minutes to form a green propolis / glyceride. Mixed liquid. The green propolis / triglyceride mixed solution was then placed in a thistle funnel to separate the layers, and then the wax oil mixture in the upper layer and the green bee collagen solution in the lower layer were separated.

With the extraction method of green propolis disclosed in the present invention, the solid content of propolis in the green propolis collagen solution contains more than 50% (w / v%) propolis, and the flavonoid content is higher than 45%, which is far more than the Taiwan Propolis Association Standards for the content of certified good propolis products: Propolis solids contain more than 10% (w / v%) propolis and 0.5% flavonoids. This shows that the extraction method of green propolis disclosed in the present invention can indeed improve the extraction rate of the effective ingredients of green propolis, so as to achieve the effect of reducing the production cost and improving the extraction quality.

For example, if 1 kg of green propolis block is used as a starting material for extraction using the extraction method of green propolis disclosed in the present invention, 2.5 kg of a first extract and 1.5 kg of a first precipitate can be obtained in the first extraction. It is known that the first extraction can extract 70 to 80% of the propolis component. After 1.5 kg of the first precipitate was subjected to the second extraction, about 3 kg of the second extract and 1 kg of the second precipitate were obtained, showing that the second extraction can extract about 15-20% of propolis. After the third extraction of 1 kg of the second precipitate, about 3 kg of the third extract and 1 kg of green propolis wax can be obtained. It can be known that the third extraction can extract about 5% of the propolis. It can be known that at step 100, 1 kg of green propolis block needs to be extracted with a total of 8.5 kg of alcohol to obtain about 8.5 kg of green propolis filtrate and 1 kg of green propolis wax.

The 8.5 kg of green propolis filtrate is subjected to a reduced pressure concentration procedure in step 200 to form 1 kg of green propolis concentrate, and 7.5 kg of alcohol is recovered for reuse.

In step 300, 1 kg of green propolis concentrate is mixed with 1 kg of edible grade propylene glycol solvent to form a 2 kg green propolis propylene glycol solution. In step 400, the 2 kg of green propolis propylene glycol solution is concentrated under reduced pressure to form 1 kg of green propolis extract, and 1 kg of alcohol is recovered and can be recycled again. The green propolis extract can be dewaxed to form a wax oil mixture and a 100% green bee collagen solution.

According to the above description, the extraction method of green propolis disclosed in the present invention has the following advantages:

First, obtaining high-concentration and high-quality green propolis extract can increase the utilization of green propolis extract.

Second: Because the green propolis extract is diluted with triglyceride, the obtained green bee collagen solution does not contain alcohol and does not have a spicy taste, which can reduce the use of flavoring agents and improve consumer acceptance. .

Third: In the extraction process, a large amount of alcohol can be recovered for recycling, which can not only reduce the environmental pollution of waste, but also reduce the production cost.

Fourth: During the extraction process, a resin and a wax oil mixture containing tri-anhydride oil and wax can be obtained at the same time. Among them, the resin can be used as a raw material for fertilizer, and the wax oil mixture can be further processed into beeswax care products or external medicines, such as Hand cream, ointment, etc.

It can be known from this that the extraction method of green propolis disclosed in the present invention can not only improve the lack of known technology, greatly increase the purity and extraction efficiency of green propolis block extract, but also reduce the extraction cost and achieve environmentally friendly effects.

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The first figure is a flowchart of a method for extracting green propolis according to an embodiment of the present invention.

Claims (6)

A method for extracting green propolis, comprising the following steps: Step a: take a green propolis block, place it in a predetermined concentration of alcohol, perform extraction at a temperature lower than 50 ° C, and filter the extracted solution to form A green propolis filtrate and a green propolis wax; step b: concentrating the green propolis filtrate to form a green propolis concentrate; step c: mixing the green propolis concentrate with a propylene glycol solvent to form a green propolis propylene glycol solution, wherein the The weight ratio of the green propolis concentrated solution to the propylene glycol solvent is 1: 1; step d: separating and concentrating from the green propolis propylene glycol solution to form a green propolis extract; step e: the green propolis extract and triglyceride Esters are mixed to form a green propolis / triglyceride mixed solution, a green bee collagen solution and a wax oil mixture are separated from the green propolis / triglyceride mixed solution, wherein the green propolis extract and the triglyceride The weight ratio is 2: 1. The method for extracting green propolis according to item 1 of the scope of patent application, wherein the step a is performed by a multi-level ultrasonic variable frequency extraction method. According to the extraction method of green propolis according to item 1 of the scope of the patent application, the step a further includes the following steps: Step a1: The green propolis block is mixed with 95% by weight alcohol, and the ultra-high temperature is performed at 30-50 ° C Sonic frequency conversion extraction, filtering to form a first extraction liquid and a first precipitate; Step a2: Take the first precipitate and mix it with 95% by weight alcohol, perform ultrasonic frequency conversion extraction at 30-50 ° C, and filter to form A second extract and a second precipitate; step a3: taking the second precipitate and 95% by weight alcohol, and performing ultrasonic variable frequency extraction at 30-50 ° C, filtering to form a third extract and The green propolis wax; step a4: collecting the first to third extracts obtained in the above steps to form the green propolis filtrate. According to the extraction method of green propolis as described in item 1 of the scope of patent application, wherein step b is performed under reduced pressure and concentration under the following conditions: the temperature is 55-65 ° C, and the negative pressure is 300-400 mmHg. The method for extracting green propolis according to item 1 of the scope of the patent application, wherein step d is to form the green propolis extract under the following conditions: the temperature is 55-65 ° C, and the negative pressure is 300-400 mmHg. According to the extraction method of green propolis as described in item 1 of the scope of the patent application, wherein after the completion of step b and step d, the remaining alcohol can be recovered separately.