CN106387168B - A kind of preparation method of walnut Diaphragma juglandis lipid-lowering health-care tea - Google Patents

Abstract

The invention discloses a preparation method of walnut heartwood lipid-lowering health tea, which comprises the following steps: 1) pretreatment of walnut heartwood: selecting fresh walnuts with complete fruit, no moth and mildew, washing, Peel and core, pick out the walnut centipede in the walnut kernel, and dry it for later use; 2) Prepare the walnut centipede extract; 3) Sun-dry; 4) Dry green; 5) Shake green; 6) Finish ; 7) Kneading; 8) Heaping; 9) Drying; 10) Repeat steps 8) and 9) for 5 to 10 times to obtain the walnut distracting wood lipid-lowering health tea. The present invention uses walnut heartwood to make walnut heartwood extract, which is evenly sprayed on the tea leaves during the process of airing, kneading and stacking, which can further enhance the aroma of the finished health-care tea; and can significantly improve the blood lipid-lowering effect of the tea leaves The content of active substances enhances the effect of lowering blood fat.

Description

A kind of preparation method of walnut split wood lipid-lowering health tea

technical field

The invention relates to the field of tea processing, in particular to a preparation method of walnut and heartwood lipid-lowering health tea.

Background technique

Walnut branch wood, refers to the wooden septum of the walnut fruit ovary, also known as walnut clothing, nutcracker, walnut septum, walnut septum, walnut grid; taste bitter and astringent, flat in nature, non-toxic, regulating qi and relieving pain, strengthening kidney and astringent The role of essence.

In recent years, experiments on the chemical composition of walnut heartwood have proved that walnut heartwood mainly contains volatile oils, oils, alkaloids, flavonoids, triterpene saponins, tannins, organic acids or phenolic components, sugars, amino acids, peptides or proteins, etc. (Jing Yuanchao et al. Research progress of distracting wood [J]. Pharmaceutical Research, 2014,33[3]:167-169).

But in the prior art, the walnut distracting wood is the rubbish that is discarded together with the walnut shell, or only a small number of people are directly soaking in water for drinking, and its active ingredients cannot be effectively extracted, resulting in poor drinking effect of the distracting wood, so Walnut split wood has not been further processed and utilized, and because of its single function, the effect is not obvious enough, resulting in the deep processing of walnut split wood products have not been well promoted.

So far, it has not been found that adding walnut centipede extract made from walnut centipede to tea leaves can significantly enhance the aroma, and can increase the content of blood lipid-lowering active substances to enhance the effect of reducing blood fat. Relevant reports on the preparation method of fat health tea.

Contents of the invention

In order to overcome the deficiencies and defects of the prior art, the object of the present invention is to provide a preparation method of the walnut and heartwood lipid-lowering health tea that can significantly improve the aroma and increase the content of blood-lipid-lowering active substances to enhance the blood-lipid-lowering effect.

The present invention adopts following technical scheme to realize the purpose of the present invention:

A kind of preparation method of walnut distracting wood lipid-lowering health-care tea, comprises the following steps:

1) Pretreatment of walnut heartwood: select fresh walnuts with complete fruit, no moth, and no mildew, wash, peel, and remove the core, pick out the walnut heartwood in the walnut kernel, and dry it for later use;

2) Prepare walnut centipede extract;

3) Green drying: Spread the fresh tea leaves evenly for drying;

4) Drying: stack the moderately sun-dried tea leaves in a cool and ventilated place indoors for drying, during which time evenly spray the concentrated walnut centipede extract on the tea leaves for 1 or 2 times;

5) Shaking green: shake the tea leaves that have been dried for 2 to 3 times;

6) Finishing: Finish the shaken tea leaves at 200-280°C until the leaves are dry;

7) Kneading: Spray evenly the walnut heartwood alcohol extraction concentrate on the completed tea leaves, and then knead;

8) Stacking: After shaking the tea leaves that have been rolled, stack them at an environment of 25-35°C for 3-24 hours, during which time evenly spray the concentrated walnut and heartwood alcohol extraction solution on the tea leaves for 1-3 times;

9) Drying: Dry the piled tea leaves at 70-100°C until the moisture content is below 20%, and place them away from light for 5-7 days;

10) Repeat steps 8) and 9) for 5 to 10 times to get walnut and heartwood lipid-lowering health tea.

It should be noted that: in step 3), the tea in the fresh tea leaves can be selected from all the teas used for fermentation, such as Tieguanyin.

Wherein, in step 2), the preparation of the walnut centipede extract comprises the preparation of the walnut centipede alcohol extraction concentrate and the preparation of the walnut centipede water extraction concentrate, including the following steps:

2.1) Take the dried walnut core wood, add edible alcohol with a weight ratio of 1:10~1:30 and a volume fraction of 50~70%, ultrasonically extract for 30~60min, and concentrate the extract under reduced pressure to remove the alcohol, and obtain the walnut fraction Heart wood alcohol extract concentrate;

2.2) Add water with a weight ratio of 1:20 to 1:40 to the walnut centipede residue after alcohol extraction, boil for extraction, and concentrate the extract under reduced pressure to obtain a water-extracted concentrate of walnut centipede.

Preferably, in step 4), the weight ratio of the walnut centipede water extraction concentrate to tea leaves is 1:2-1:20.

Preferably, in step 7), the weight ratio of the walnut fractionated wood alcohol extraction concentrate to tea leaves is 1:5-1:20.

Preferably, in step 8), the weight ratio of the walnut fractionated wood alcohol extraction concentrate to tea leaves is 1:5-1:20.

The invention also discloses a walnut and heartwood lipid-lowering health-care tea obtained by the above-mentioned preparation method.

Compared with the prior art, the present invention has the following beneficial effects:

1) The present invention uses walnut heartwood to make walnut heartwood extract, which is evenly sprayed on tea leaves during the process of drying, rolling and stacking, so as to realize the high-value utilization of walnut heartwood; the important thing is Because the walnut heartwood contains volatile oils, saponins, sugars, proteins, alkaloids, flavonoids and other components that can react with the aroma components in the tea leaves, it can further enhance the aroma of the finished health tea.

2) The present invention adopts the walnut heartwood to make the walnut heartwood ethanol extraction concentrate, which is evenly sprayed to the tea leaves in the process of kneading and stacking, because the walnut heartwood contains flavonoids, alkaloids and other active ingredients that can The tea polyphenols and tea polysaccharides in tea interact with each other to exert a synergistic effect, which can significantly increase the content of blood lipid-lowering active substances in tea and enhance the blood lipid-lowering effect.

Detailed ways

The present invention will be further described below through specific embodiments. The following examples are preferred implementation forms of the present invention, but the implementation manners of the present invention are not limited by the following examples.

The raw materials used in the examples of the present invention and comparative examples are commercially available common products.

Aroma sensory evaluation method: 10 tea tasters are invited to evaluate the aroma of the tea products. The scoring indicators include: aroma purity, aroma level, and aroma persistence. The highest score for each item is 10 points, and the lowest score is 1 point. .

Example 1

A kind of preparation method of walnut distracting wood lipid-lowering health-care tea, comprises the following steps:

1) Pretreatment of walnut heartwood: select fresh walnuts with complete fruit, no moth, and no mildew, wash, peel, and remove the core, pick out the walnut heartwood in the walnut kernel, and dry it for later use;

2) Prepare walnut centipede extract; the preparation of walnut centipede extract includes preparing walnut centipede alcohol extract concentrate and preparing walnut centipede water extract concentrate, including the following steps:

2.1) Take the dried walnut heartwood, add edible alcohol with a weight ratio of 1:20 and a volume fraction of 60%, ultrasonically extract for 45 minutes, concentrate the extract under reduced pressure to remove the alcohol, and obtain the walnut heartwood alcohol extraction concentrate;

2.2) adding water with a weight ratio of 1:30 to the walnut centipede residue after alcohol extraction, boiling for extraction, and concentrating the extract under reduced pressure to obtain a water-extracted concentrate of walnut centipede;

3) Green drying: Spread the fresh tea leaves evenly for drying;

4) Drying: stack the moderately sun-dried tea leaves in a cool and ventilated place indoors for drying, during which time evenly spray the walnut centipede extract concentrate on the tea leaves twice; The weight ratio is 1:10;

5) Shaking green: shake the tea leaves that have been dried for 3 times;

6) Finishing: Finish the shaken tea leaves at 240°C until the leaves are dry;

7) Kneading: evenly spray the concentrated walnut-centred wood alcohol extraction concentrate on the completed tea leaves, and then knead; the weight ratio of the walnut-centred wood alcohol extraction concentrate to tea leaves is 1:12;

8) Stacking: After shaking the tea leaves that have been rolled, they are stacked at an environment of 30°C for 14 hours, and during this period, the walnut-scented wood alcohol extraction concentrate is evenly sprayed on the tea leaves twice; the walnut-scented wood alcohol extraction concentrate and The weight ratio of tea leaves is 1:12;

9) Drying: Dry the stacked tea leaves at 85°C until the moisture content is below 20%, and store them in the dark for 6 days;

10) Repeat steps 8) and 9) 8 times to get walnut and heartwood lipid-lowering health tea.

The aroma and blood lipid-lowering effect of the prepared walnut-scented wood lipid-lowering health tea are shown in Table 1-2.

Example 2

A kind of preparation method of walnut distracting wood lipid-lowering health-care tea, comprises the following steps:

1) Pretreatment of walnut heartwood: select fresh walnuts with complete fruit, no moth, and no mildew, wash, peel, and remove the core, pick out the walnut heartwood in the walnut kernel, and dry it for later use;

2) Prepare walnut centipede extract; the preparation of walnut centipede extract includes preparing walnut centipede alcohol extract concentrate and preparing walnut centipede water extract concentrate, including the following steps:

2.1) Take the dried walnut heartwood, add edible alcohol with a weight ratio of 1:20 and a volume fraction of 60%, ultrasonically extract for 45 minutes, concentrate the extract under reduced pressure to remove the alcohol, and obtain the walnut heartwood alcohol extraction concentrate;

2.2) adding water with a weight ratio of 1:30 to the walnut centipede residue after alcohol extraction, boiling for extraction, and concentrating the extract under reduced pressure to obtain a water-extracted concentrate of walnut centipede;

3) Green drying: Spread the fresh tea leaves evenly for drying;

4) Drying: stack the moderately sun-dried tea leaves in a cool and ventilated place indoors for drying, during which time evenly spray the walnut centipede extract concentrate on the tea leaves twice; The weight ratio is 1:2;

5) Shaking green: shake the tea leaves that have been dried for 3 times;

6) Finishing: Finish the shaken tea leaves at 240°C until the leaves are dry;

7) Kneading: evenly spray the concentrated walnut-centred wood alcohol extraction solution on the completed tea leaves, and then knead; the weight ratio of the walnut-centred wood alcohol extraction concentrated solution to the tea leaves is 1:5;

8) Stacking: After shaking the tea leaves that have been rolled, they are stacked at an environment of 30°C for 14 hours, and during this period, the walnut-scented wood alcohol extraction concentrate is evenly sprayed on the tea leaves twice; the walnut-scented wood alcohol extraction concentrate and The weight ratio of tea leaves is 1:5;

9) Drying: Dry the stacked tea leaves at 85°C until the moisture content is below 20%, and store them in the dark for 6 days;

10) Repeat steps 8) and 9) 5 times to get walnut and heartwood lipid-lowering health tea.

The aroma and blood lipid-lowering effect of the prepared walnut-scented wood lipid-lowering health tea are shown in Table 1-2.

Example 3

A kind of preparation method of walnut distracting wood lipid-lowering health-care tea, comprises the following steps:

1) Pretreatment of walnut heartwood: select fresh walnuts with complete fruit, no moth, and no mildew, wash, peel, and remove the core, pick out the walnut heartwood in the walnut kernel, and dry it for later use;

2) Prepare walnut centipede extract; the preparation of walnut centipede extract includes preparing walnut centipede alcohol extract concentrate and preparing walnut centipede water extract concentrate, including the following steps:

2.1) Take the dried walnut heartwood, add edible alcohol with a weight ratio of 1:20 and a volume fraction of 60%, ultrasonically extract for 30-60 minutes, and concentrate the extract under reduced pressure to remove the alcohol liquid, and obtain the walnut heartwood alcohol extraction concentrate ;

2.2) adding water with a weight ratio of 1:30 to the walnut centipede residue after alcohol extraction, boiling for extraction, and concentrating the extract under reduced pressure to obtain a water-extracted concentrate of walnut centipede;

3) Green drying: Spread the fresh tea leaves evenly for drying;

4) Drying: stack the moderately sun-dried tea leaves in a cool and ventilated place indoors for drying, during which time evenly spray the walnut centipede extract concentrate on the tea leaves twice; The weight ratio is 1:20;

5) Shake the green: shake the tea leaves that have been dried for 2 times;

6) Finishing: Finish the shaken tea leaves at 240°C until the leaves are dry;

7) Kneading: evenly spray the walnut-centred wood alcohol extraction concentrate on the completed tea leaves, and then knead; the weight ratio of the walnut-centred wood alcohol extraction concentrate to tea leaves is 1:20;

8) Stacking: Shake the tea leaves that have been twirled and stack them at an environment of 30°C for 14 hours. During this period, evenly spray the concentrated walnut heartwood alcohol extraction solution on the tea leaves for 3 times; the walnut heartwood alcohol extraction concentrate and The weight ratio of tea leaves is 1:20;

9) Drying: Dry the stacked tea leaves at 85°C until the moisture content is below 20%, and store them in the dark for 6 days;

10) Repeat steps 8) and 9) 10 times to get walnut and heartwood lipid-lowering health tea.

The aroma and blood lipid-lowering effect of the prepared walnut-scented wood lipid-lowering health tea are shown in Table 1-2.

Comparative example 1:

A preparation method for lipid-lowering health tea, comprising the following steps:

1) Greening: spread the fresh tea leaves evenly for drying;

2) Drying: stack the moderately sun-dried tea leaves in a cool and ventilated place indoors for drying;

3) Shaking green: shake the tea leaves that have been dried for 3 times;

4) Finishing: Finish the shaken tea leaves at 240°C until the leaves are dry;

5) Kneading: kneading the finished tea leaves;

6) Stacking: Shake the rolled tea leaves and stack them for 14 hours at an ambient temperature of 30°C;

7) Drying: Dry the piled tea leaves at 85°C until the moisture content is below 20%, and place them in the dark for 6 days;

10) Repeat steps 6) and 7) 8 times to obtain lipid-lowering health tea.

The aroma and blood lipid-lowering effect of the prepared lipid-lowering health tea are shown in Table 1-2.

Comparative example 2

A preparation method of walnut fenugreek lipid-lowering health tea, step 4) in which the weight ratio of walnut fenugreek water extraction concentrate to tea leaves is 3:4; others are the same as in Example 1.

The aroma and blood lipid-lowering effect of the prepared lipid-lowering health tea are shown in Table 1-2.

Comparative example 3

A preparation method of walnut fenugreek lipid-lowering health tea, step 4) in which the weight ratio of walnut fenugreek water extraction concentrate to tea leaves is 1:25; others are the same as in Example 1.

The aroma and blood lipid-lowering effect of the prepared lipid-lowering health tea are shown in Table 1-2.

Comparative example 4

A method for preparing a fat-reducing health-care tea made from walnut-scented wood. In step 7), the weight ratio of the walnut-scented wood alcohol extraction concentrate to tea leaves is 1:4; others are the same as in Example 1.

The aroma and blood lipid-lowering effect of the prepared lipid-lowering health tea are shown in Table 1-2.

Comparative example 5

A preparation method of walnut fenugreek lipid-lowering health tea, in step 7), the weight ratio of the walnut fenugreek alcohol extraction concentrate to tea leaves is 1:25; the other is the same as in Example 1.

The aroma and blood lipid-lowering effect of the prepared lipid-lowering health tea are shown in Table 1-2.

Comparative example 6

A method for preparing a fat-reducing health-care tea made from walnut-scented wood. In step 8), the weight ratio of the walnut-scented wood alcohol extraction concentrate to tea leaves is 1:4; others are the same as in Example 1.

The aroma and blood lipid-lowering effect of the prepared lipid-lowering health tea are shown in Table 1-2.

Comparative example 7

A method for preparing a fat-reducing health-care tea made from walnut and heartwood. In step 8), the weight ratio of the walnut and heartwood alcohol extraction concentrate to the tea leaves is 1:25; the others are the same as in Example 1. The aroma and blood lipid-lowering effect of the prepared lipid-lowering health tea are shown in Table 1-2.

Table 1 Aroma evaluation results of lipid-lowering health teas prepared in Examples 1-3 and Comparative Examples 1-7

The lipid-lowering health tea prepared in Examples 1-3 and Comparative Examples 1-7 was carried out in animal experiments for reducing blood fat:

The mice with established hyperlipidemia were randomly divided into hyperlipidemia model group, drug treatment group (50mg/kg), walnut and heartwood lipid-lowering health tea treatment group (100mg/kg), commercially available tea treatment group (100mg /kg). The high-fat model group was treated with simple diet, fed high-fat feed, and drank distilled water; in addition to high-fat feed, the other groups were intragastrically given corresponding doses of drugs or tea water extracts daily. After 30 days of fasting for 24 hours, the eyeballs were removed and blood was taken to detect the levels of serum triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C). The experimental results are shown in Table 2.

Table 2

The results show that the walnut distracting wood lipid-lowering health tea prepared in Examples 1-3 can effectively reduce serum triglyceride levels and low-density lipoprotein cholesterol levels in hyperlipidemia mice, improve high-density lipoprotein cholesterol levels, and The effect is better than the lipid-lowering health-care tea prepared in Comparative Examples 1-3 and the commercially available tea group. It can be seen that the walnut split wood lipid-lowering health-care tea prepared by the present invention can effectively improve the content of blood-fat-lowering active ingredients, thereby enhancing its Blood fat lowering effect.

Claims (3)

1. a kind of preparation method of walnut Diaphragma juglandis lipid-lowering health-care tea, comprising the following steps:

1) pretreatment of walnut Diaphragma juglandis: selecting that fruit is complete, free from insect pests, the fresh walnut without mildew, cleans, removes the peel, stoning, Choose the walnut Diaphragma juglandis in walnut kernel, dries spare；

2) walnut Diaphragma juglandis extracting solution is prepared；

3) sundrying: tea fresh leaf is uniformly spread out and carries out sundrying processing；

4) air blue: the tealeaves of sundrying appropriateness is stacked and carries out air blue at shady and cool ventilation indoors, is during which uniformly sprayed on tealeaves Walnut Diaphragma juglandis water extracting liquid 1 ~ 2 time；

5) tealeaves for completing air blue leaf rotation: is subjected to 2 ~ 3 shaking treatings；

6) it finishes: the tealeaves for completing leaf rotation being finished at 200 ~ 280 DEG C, until blade is partially dry；

7) it rubs: uniformly spraying walnut Diaphragma juglandis alcohol extracting concentrate on the tealeaves for completing water-removing, then rubbed；

8) heap is wet: will complete after the tealeaves rubbed shakes loose at 25 ~ 35 DEG C of environment heap wet 3 ~ for 24 hours, during which uniformly sprays on tealeaves Spill walnut Diaphragma juglandis alcohol extracting concentrate 1 ~ 3 time；

9) it dries: the wet tealeaves of heap will be completed and dried to moisture content 20% in 70 ~ 100 DEG C of conditions hereinafter, avoid light place 5 ~ 7 days；

10) step 8) and 9) operation 5 ~ 10 times are repeated, walnut Diaphragma juglandis lipid-lowering health-care tea is obtained；

In step 4), weight ratio 1:2 ~ 1:20 of the walnut Diaphragma juglandis water extracting liquid and tealeaves；

In step 7), weight ratio 1:5 ~ 1:20 of the walnut Diaphragma juglandis alcohol extracting concentrate and tealeaves；

In step 8), weight ratio 1:5 ~ 1:20 of the walnut Diaphragma juglandis alcohol extracting concentrate and tealeaves.

2. a kind of preparation method of walnut Diaphragma juglandis lipid-lowering health-care tea according to claim 1, which is characterized in that step 2 In, it is described to prepare walnut Diaphragma juglandis extracting solution, including prepare walnut Diaphragma juglandis alcohol extracting concentrate and prepare walnut Diaphragma juglandis water and mention Concentrate includes the following steps:

2.1) the walnut Diaphragma juglandis dried is taken, addition weight ratio is that 1:10 ~ 1:30 volume fraction is 50 ~ 70% edible alcohols, is surpassed Sound extracts 30 ~ 60min, and extracting solution is concentrated under reduced pressure removal alcohol liquid, obtains walnut Diaphragma juglandis alcohol extracting concentrate；

2.2) by the walnut Diaphragma juglandis residue after alcohol extracting, the water that weight ratio is 1:20 ~ 1:40 is added, boils extraction, extracting solution subtracts Pressure concentration, obtains walnut Diaphragma juglandis water extracting liquid.

3. a kind of walnut Diaphragma juglandis lipid-lowering health-care tea that preparation method as claimed in claim 1 or 2 obtains.