CN106689580B - Concentrated extract of bitter gourd and momordica grosvenori herbal tea capable of preventing precipitation and preparation method of concentrated extract - Google Patents

Concentrated extract of bitter gourd and momordica grosvenori herbal tea capable of preventing precipitation and preparation method of concentrated extract Download PDF

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CN106689580B
CN106689580B CN201611078328.0A CN201611078328A CN106689580B CN 106689580 B CN106689580 B CN 106689580B CN 201611078328 A CN201611078328 A CN 201611078328A CN 106689580 B CN106689580 B CN 106689580B
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上官星云
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Guangxi Bailile Biotechnology Co ltd
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23FCOFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F3/00Tea; Tea substitutes; Preparations thereof
    • A23F3/34Tea substitutes, e.g. matè; Extracts or infusions thereof

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Abstract

The invention discloses a concentrated extract of bitter gourd and grosvenor momordica herb tea for preventing precipitation and a preparation method thereof, wherein the method comprises the following steps: 1) preparing raw materials: preparing bitter gourd, chrysanthemum and momordica grosvenori; 2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7-8 times of purified water by weight, decocting and extracting for 1-2 times, each time for 1-2 hours, filtering, and mixing filtrates; 3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%; 4) and (3) pressurization treatment: adding 0.001 weight part of mannitol into the material obtained in the step 3), filling the material into a pressure-resistant and nontoxic flexible packaging bag, putting the flexible packaging bag into a closed container, pressurizing the material to 6-8MPa by using water as a pressurizing medium, and instantly releasing the pressure after keeping the pressure for 60-90s to obtain the material. Ensures the stable quality of the concentrated extract, and the obtained final product is clear and has no precipitate.

Description

Concentrated extract of bitter gourd and momordica grosvenori herbal tea capable of preventing precipitation and preparation method of concentrated extract
Technical Field
The invention belongs to the technical field of food processing, and particularly relates to a concentrated extract of bitter gourd and momordica grosvenori herbal tea capable of preventing precipitation and a preparation method of the concentrated extract.
Background
Balsam pear (Momoradica charrantia L.), chrysanthemum (chrysanthemum) and fructus momordicae (Siraitiagrosvenori) are all common plants with heat clearing and detoxifying effects, are listed as plants of the Ministry of health in China that are food and medicine due to extremely small toxic and side effects, and are widely used for treating various heat diseases in Chinese medicine clinical and folk diet therapy health preserving in China. The balsam pear is sweet and bitter in fruit taste, and has the efficacy of clearing heat and removing toxicity when used as a medicine; the chrysanthemum is sweet, bitter and slightly cold in nature and flavor, enters lung and liver meridians, and has the effects of dispelling wind, clearing heat, clearing liver and improving eyesight; fructus momordicae is sweet in taste and cool in nature, enters lung and large intestine channels, has the effects of moistening lung to arrest cough, promoting fluid production to quench thirst, and is suitable for lung heat or cough with dryness of lung, pertussis, fluid impairment caused by summer heat, thirst and the like. The above 3 medicines are used as main components of herbal tea.
Herbal tea is a generic name for Chinese herbal medicine plant drinks. The herbal tea is neither cool nor tea. The beverage is prepared by decocting a compound herbal medicine or a single indigenous herbal medicine commonly used in folks in Guangdong, hong Kong and Macao, and the Chinese herbal medicine with cold and cool property and capable of relieving internal heat is taken as the beverage to eliminate diseases such as summer heat in summer or throat pain caused by dry winter. The herbal tea is a beverage which is edible and summarized by taking Chinese herbal medicines as raw materials according to local climate, water and soil characteristics and in the process of preventing diseases and health care for a long time by taking the health preserving theory of traditional Chinese medicine as guidance. It has specific terms to guide people to drink daily, and has no dosage limitation and no need of doctor's instruction list. Guangdong herbal tea is a representative of the culture of traditional Chinese herbal tea. The herbal tea is a beverage prepared by decocting Chinese herbal medicines with cold and cool properties and capable of relieving internal heat of a human body, so as to eliminate summer-heat in summer or treat diseases such as sore throat and the like caused by dryness in winter. In 2006, 20/5, herbal tea is approved by State administration and listed in the first national non-material cultural heritage.
At present, the herbal tea on the market mainly comprises several packaging and selling forms of canned herbal tea, bottle cans, tetra Pak bags, big bowls of herbal tea pavements and herbal tea granules, wherein the canned herbal tea is mainly used. According to the running condition analysis report of Chinese beverage industry in three seasons before 2012, which is issued by the information issuing center of China national Bureau of statistics of China, the sale amount of canned herbal tea exceeds the sale amount of Coca Cola in China, and becomes the first can of Chinese beverage, and according to the display of the sale data before, the sale amount of canned herbal tea is advanced for 7 years continuously, and the quantity of canned herbal tea in the market can be seen. Compared with the traditional herbal tea shop production mode, the modern industrial mass production inevitably requires that the product can obtain continuity and guarantee on the quality so as to meet the requirements of consumers and obtain the confidence of the consumers. The leading production level of the existing herbal tea industry is mainly to obtain herbal essence through an advanced concentration technology, and then to allocate and fill in a factory, so that the stability and consistency of the mouthfeel of the herbal tea are ensured to the maximum extent. Therefore, the quality control of the concentrated extract of the herbal tea is critical.
Disclosure of Invention
The invention aims to provide a brand new preparation method of a concentrated extract of balsam pear and grosvenor momordica herb tea for preventing precipitation, and the quality of the concentrated extract is ensured to be stable and the obtained final product has no precipitation through the process research of the concentrated extract of herb tea.
The invention is realized by the following technical scheme:
the preparation method of the concentrated extract of the bitter gourd and momordica grosvenori herbal tea for preventing precipitation comprises the following steps of:
1) preparing raw materials: preparing bitter gourd, chrysanthemum and momordica grosvenori;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7-8 times of purified water by weight, decocting and extracting for 1-2 times, each time for 1-2 hours, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%;
4) and (3) pressurization treatment: adding 0.001 weight part of mannitol into the material obtained in the step 3), filling the material into a pressure-resistant and nontoxic flexible packaging bag, putting the flexible packaging bag into a closed container, pressurizing the material to 6-8MPa by using water as a pressurizing medium, and instantly releasing the pressure after keeping the pressure for 60-90s to obtain the material.
The balsam pear, the chrysanthemum and the momordica grosvenori in the step 1) are preferably in a weight ratio of 3-5:2-4:0.5-1.5, and more preferably in a weight ratio of 4:3: 1; the fructus Siraitiae Grosvenorii is preferably fresh fructus Siraitiae Grosvenorii.
And (4) nanofiltration concentration, wherein the preferable temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474, so that the content of soluble solids in the mixed filtrate can be increased from 1.0-2.0% to 15-16%.
The invention also comprises a concentrated extract of the bitter gourd and momordica grosvenori herbal tea for preventing precipitation, which is prepared by the preparation method.
Compared with the prior art, the invention has the following advantages:
1. in the prior art, in order to prevent the precipitation of herbal tea beverages or achieve the purpose of clarification, an enzyme preparation or a complex enzyme preparation is generally added in the production process of the herbal tea beverages, but the addition of the enzyme preparation is more suitable for immediately preparing and filling Chinese herbal medicine raw materials after extraction, and is not suitable for large-scale production of herbal tea by taking the form of herbal tea concentrated solution as a beverage main agent.
2. Before the pressure treatment, mannitol is added into the concentrated solution, so that osmotic pressure can be maintained, aggregation of soluble particles is prevented, and the aim of preventing precipitation is fulfilled.
3. In the prior art, the high pressure or ultrahigh pressure treatment of food, beverage and the like is used for sterilization or active ingredient extraction, the pressure is 100-1000MPa or even higher, and the high pressure treatment is generally used in the extraction stage of raw materials. The concentrated herbal tea extract is a mixed solution obtained after extraction of various traditional Chinese medicine raw materials, and a polymerization phenomenon is easily formed after different substances are mixed, if the concentrated herbal tea extract is processed under such high processing pressure, the structure of protein and polysaccharide substances in the traditional Chinese medicines such as bitter gourds and momordica grosvenori can be changed, and the substances can be coagulated under the conditions of long-term storage or refrigeration and freezing to form cheese-shaped precipitates, so that quality problems are generated, and the taste, color, appearance and the like of the finished beverage are influenced. The invention adopts pressurization to treat the problems of precipitation and clarification of the herbal tea concentrated extract, the used pressure is far less than the pressure range of the prior art, the treated herbal tea concentrated extract has stable quality, does not generate precipitation, and simultaneously achieves the aim of sterilization.
Detailed Description
The present invention is further illustrated by the following examples, but the present invention is not limited to these examples.
Example 1:
the preparation method of the concentrated extract of the bitter gourd and momordica grosvenori herbal tea for preventing precipitation comprises the following steps of:
1) preparing raw materials: preparing bitter gourds, chrysanthemum and momordica grosvenori according to the weight ratio of 5:2: 1.5;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7 times of purified water by weight, decocting and extracting for 2 times, each time for 1 hour, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%, the nanofiltration temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474;
4) and (3) pressurization treatment: adding 0.001 weight part of mannitol into the material obtained in the step 3), filling the material into a pressure-resistant and nontoxic flexible packaging bag, putting the flexible packaging bag into a closed container, pressurizing the material to 6-8MPa by using water as a pressurizing medium, and instantly releasing the pressure after keeping the pressure for 60s to obtain the material.
Example 2:
the preparation method of the concentrated extract of the bitter gourd and momordica grosvenori herbal tea for preventing precipitation comprises the following steps of:
1) preparing raw materials: preparing bitter gourd, chrysanthemum and momordica grosvenori according to the weight ratio of 3:4: 0.5;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 8 times of purified water by weight, decocting and extracting for 1 time, 2 hours each time, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%, the nanofiltration temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474;
4) and (3) pressurization treatment: adding 0.001 weight part of mannitol into the material obtained in the step 3), filling the material into a pressure-resistant and nontoxic flexible packaging bag, putting the flexible packaging bag into a closed container, pressurizing the material to 6-8MPa by using water as a pressurizing medium, and instantly releasing the pressure after keeping the pressure for 80s to obtain the material.
Example 3:
the preparation method of the concentrated extract of the bitter gourd and momordica grosvenori herbal tea for preventing precipitation comprises the following steps of:
1) preparing raw materials: preparing bitter gourds, chrysanthemum and momordica grosvenori according to a weight ratio of 4:3: 1;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7 times of purified water by weight, decocting and extracting for 2 times, each time for 1 hour, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%, the nanofiltration temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474;
4) and (3) pressurization treatment: adding 0.001 weight part of mannitol into the material obtained in the step 3), filling the material into a pressure-resistant and nontoxic flexible packaging bag, putting the flexible packaging bag into a closed container, pressurizing the material to 6-8MPa by using water as a pressurizing medium, and instantly releasing the pressure after keeping the pressure for 90 seconds to obtain the material.
Comparative example 1:
1) preparing raw materials: preparing bitter gourds, chrysanthemum and momordica grosvenori according to a weight ratio of 4:3: 1;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7 times of purified water by weight, decocting and extracting for 2 times, each time for 1 hour, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%, the nanofiltration temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474;
4) and (3) pressurization treatment: loading the material obtained in the step 3) into a pressure-resistant and nontoxic flexible packaging bag, placing the pressure-resistant and nontoxic flexible packaging bag into a closed container, pressurizing the material to 6-8MPa by using water as a pressurizing medium, and releasing the pressure instantly after keeping the pressure for 90 seconds to obtain the material.
Comparative example 2:
1) preparing raw materials: preparing bitter gourds, chrysanthemum and momordica grosvenori according to a weight ratio of 4:3: 1;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7 times of purified water by weight, decocting and extracting for 2 times, each time for 1 hour, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%, the nanofiltration temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474;
4) and (3) pressurization treatment: putting the material obtained in the step 3) into a pressure-resistant and nontoxic flexible packaging bag, and putting the material into a closed container to obtain the material.
Comparative example 3:
1) preparing raw materials: preparing bitter gourds, chrysanthemum and momordica grosvenori according to a weight ratio of 4:3: 1;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7 times of purified water by weight, decocting and extracting for 2 times, each time for 1 hour, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%, the nanofiltration temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474;
4) and (3) pressurization treatment: adding 0.8% (w/v) of beta-CD cyclodextrin, 0.05g/kg of pectinase, 0.05g/kg of papain and 0.06% (w/v) of citric acid into the material obtained in the step 3) to obtain the beta-CD cyclodextrin-papain-based gel.
Comparative example 4:
1) preparing raw materials: preparing bitter gourds, chrysanthemum and momordica grosvenori according to a weight ratio of 4:3: 1;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7 times of purified water by weight, decocting and extracting for 2 times, each time for 1 hour, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%, the nanofiltration temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474;
4) and (3) pressurization treatment: putting the material obtained in the step 3) into a pressure-resistant and nontoxic flexible packaging bag, putting the pressure-resistant and nontoxic flexible packaging bag into a closed container, pressurizing the material to 80MPa by using water as a pressurizing medium, and instantly releasing the pressure after keeping the pressure for 90s to obtain the material.
Comparative example 5:
1) preparing raw materials: preparing bitter gourds, chrysanthemum and momordica grosvenori according to a weight ratio of 4:3: 1;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7 times of purified water by weight, decocting and extracting for 2 times, each time for 1 hour, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%, the nanofiltration temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474;
4) and (3) pressurization treatment: putting the material obtained in the step 3) into a pressure-resistant and nontoxic flexible packaging bag, putting the pressure-resistant and nontoxic flexible packaging bag into a closed container, pressurizing the material to 150MPa by using water as a pressurizing medium, and instantly releasing the pressure after keeping the pressure for 90s to obtain the material.
Comparative example 6:
1) preparing raw materials: preparing bitter gourds, chrysanthemum and momordica grosvenori according to a weight ratio of 4:3: 1;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7 times of purified water by weight, decocting and extracting for 2 times, each time for 1 hour, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%, the nanofiltration temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474;
4) and (3) pressurization treatment: putting the material obtained in the step 3) into a pressure-resistant and nontoxic flexible packaging bag, putting the pressure-resistant and nontoxic flexible packaging bag into a closed container, pressurizing the material to 400MPa by using water as a pressurizing medium, and instantly releasing the pressure after keeping the pressure for 90s to obtain the material.
Experimental example:
after the herbal tea concentrates obtained in example 3 and the comparative example are placed in the same storage environment for 6 months, beverages are prepared, 10 batches are respectively sampled and inspected in example 3 and the comparative example, 3 samples are extracted from each batch, and the obtained beverages are compared with precipitation conditions through accelerated experiments, and the number of examples is counted.
Figure BDA0001166466260000051
Figure BDA0001166466260000061
And (4) conclusion: the sample of example 3 gave better results than the comparative example.

Claims (5)

1. The preparation method of the concentrated extract of the bitter gourd and momordica grosvenori herbal tea capable of preventing precipitation is characterized by comprising the following steps of:
1) preparing raw materials: preparing bitter gourd, chrysanthemum and momordica grosvenori;
2) extraction: removing impurities from the raw materials, cleaning, crushing or crushing, putting into an extraction tank, adding 7-8 times of purified water by weight, decocting and extracting for 1-2 times, each time for 1-2 hours, filtering, and mixing filtrates;
3) concentration: carrying out nanofiltration concentration on the filtrate obtained in the step 2) until the content of soluble solids is 15-16%;
4) and (3) pressurization treatment: adding 0.001 weight part of mannitol into the material obtained in the step 3), filling the material into a pressure-resistant and nontoxic flexible packaging bag, putting the flexible packaging bag into a closed container, pressurizing the material to 6-8MPa by using water as a pressurizing medium, and instantly releasing the pressure after keeping the pressure for 60-90s to obtain the material.
2. The method for preparing the concentrated extract of momordica charantia grosvenori herbal tea for preventing precipitation according to claim 1, wherein the extract comprises the following steps: the balsam pear, the chrysanthemum and the momordica grosvenori in the step 1) are in a weight ratio of 3-5:2-4: 0.5-1.5.
3. The method for preparing the concentrated extract of momordica charantia grosvenori herbal tea for preventing precipitation according to claim 2, wherein the extract comprises the following steps: the bitter gourd, the chrysanthemum and the momordica grosvenori in the step 1) are in a weight ratio of 4:3: 1.
4. The method for preparing the concentrated extract of momordica charantia grosvenori herbal tea for preventing precipitation according to claim 1, wherein the extract comprises the following steps: nanofiltration and concentration in the step 4), wherein the temperature is 28-30 ℃, the pressure is 2.8-3.0MPa, and the membrane type number is 474.
5. A concentrated extract of Momordica charantia, Momordica grosvenori, herbal tea with precipitation prevention obtained by the method of any one of claims 1-4.
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