Preparation method of health-preserving white tea

Abstract

The invention relates to the technical field of tea processing, in particular to a preparation method of health-preserving white tea, which comprises the following steps: pretreating Juncao ganoderma lucidum; preparing a white tea base material; mixing the ganoderma lucidum slices and the finished white tea according to the weight ratio of 1: 4 to obtain a mixture; performing low-temperature aroma enhancement: putting the mixture into a drying oven at 50-60 DEG C, and performing static aroma enhancement for 1.5-2 hours; and shaping and drying. The preparation method has the beneficial effects that traditional lucid ganoderma is replaced by the grass-cultivated lucid ganoderma, and a low-temperature drying process is combined, so that the problem of water-soluble polysaccharide loss in the cooking process is effectively avoided, active ingredients in the lucid ganoderma are reserved to the greatest extent, and the quality and efficacy of the product are improved; according to the invention, the dried ganoderma lucidum slices are directly mixed with the white tea, so that the defect that thick substances such as thearubigins cover the faint scent of ganoderma lucidum in the traditional fermentation process is avoided, the flavor and taste of ganoderma lucidum are effectively improved, and meanwhile, the introduction of irritant theophylline is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of tea processing, and particularly relates to a preparation method of health-care white tea. Background Art

[0002] White tea is one of the six major tea categories in China. It is a special product of Fujian, and its main production areas are in Fuding, Zhenghe and other places. It is a special treasure among Chinese tea categories. Because its finished tea is mostly bud heads, covered with white hairs, like silver and snow, it gets its name. The effects of white tea are: preventing cancer, anti-cancer, preventing heatstroke, detoxifying, treating toothache. Especially the aged white tea can be used as an antipyretic for children suffering from measles, and its antipyretic effect is better than antibiotics. In addition to the inherent nutritional components of other teas, white tea also contains active enzymes essential for the human body. Medical research at home and abroad has proved that long-term drinking of white tea can promote fat decomposition and metabolism, effectively control the secretion of insulin, decompose the excess sugar in the body blood, promote blood sugar balance, and effectively prevent diabetes. The longer the white tea is stored, the higher its medicinal value. White tea also contains rich provitamin A. After being absorbed by the human body, it can make the eyes see things more clearly in dim light, and can prevent night blindness and xerophthalmia. At the same time, white tea also has anti-radiation substances, which have a significant protective effect on the hematopoietic function of the human body and can reduce the harm of TV radiation.

[0003] As a traditional health-care drink, Ganoderma lucidum tea has a long history in Chinese culture. Traditional Ganoderma lucidum tea usually uses ordinary Ganoderma lucidum fruit bodies and black tea for compatibility, and through a series of processing steps, such as steaming, slicing, drying, fermentation, etc., to make the final product. However, this traditional processing method has some obvious defects. First of all, during the steaming process, water-soluble polysaccharides will be lost, resulting in a reduction of active ingredients in Ganoderma lucidum. Secondly, because black tea will produce thick substances such as thearubigins during the fermentation process, it masks the fragrance of Ganoderma lucidum, introduces irritating theophylline, and affects the taste of the final product. In addition, the traditional fermentation process needs to be carried out in an environment of 28 - 32°C and 85% humidity. Such conditions are likely to cause mildew or over-oxidation of white tea (non-fermented tea), destroying its feature of delicate fragrance and honey flavor. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide a preparation method of health-care white tea with a large amount of active ingredients in Ganoderma lucidum and good taste.

[0005] In order to solve the above technical problem, the technical solution adopted by the present invention is: to provide a preparation method of health-care white tea, including the following steps: Step 1, pretreatment of Ganoderma lucidum on Juncao: Wash and slice Ganoderma lucidum on Juncao to obtain Ganoderma lucidum slices; Step 2, preparation of white tea base material: Select finished white tea; Step 3, dry blending: Mix the Ganoderma lucidum slices and the finished white tea in a weight ratio of 1:4 to obtain a blended material; Step 4, Low-temperature flavor extraction: Place the mixture in an oven at 50 - 60°C for static flavor extraction for 1.5 - 2 hours; Step 5, Shaping and drying: Place the mixture obtained in Step 4 in a hot air oven at 45°C and dry for 2 - 3 hours until the water content is controlled at 5 - 6%.

[0006] Further, in the above method for preparing health-preserving white tea, Step 1 is specifically as follows: Step 101, Wash the Ganoderma lucidum on Juncao for 30 seconds and drain naturally; Step 102, Cut the Ganoderma lucidum on Juncao into uniform thin slices with a thickness of 2 - 3 mm; Step 103, Place the cut Ganoderma lucidum on Juncao in a hot air oven at 50 - 60°C and dry for 4 - 5 hours until the water content is controlled at 7 - 8%.

[0007] Further, in the above method for preparing health-preserving white tea, in Step 2, the finished white tea is one of Baihao Yinzhen, White Peony, or Shoumei; Further, in the above method for preparing health-preserving white tea, Step 4 is specifically as follows: Step 401, Place the mixed materials in an oven at 55°C for static flavor extraction for 1.5 - 2 hours; Step 402, Turn over the materials every 30 minutes to promote the uniform distribution of aroma.

[0008] Further, in the above method for preparing health-preserving white tea, Step 5 is specifically as follows: Step 501, Spread the mixture after low-temperature flavor extraction into a thin layer with a thickness not exceeding 2 cm; Step 502, Place it in a hot air oven at 45°C and dry for 2 - 3 hours until the water content is controlled at 5 - 6%; Step 503, Turn over the materials every 30 minutes to prevent local over-drying.

[0009] Further, in the above method for preparing health-preserving white tea, it further includes Step 6, cooling the mixture obtained in Step 5 to 25 - 30°C and then filling with nitrogen for packaging.

[0010] The beneficial effects of the present invention are as follows: 1. By using Ganoderma lucidum on Juncao to replace traditional Ganoderma lucidum and combining with the low-temperature drying process, the problem of water-soluble polysaccharide loss during the cooking process is effectively avoided, and the active ingredients in Ganoderma lucidum are retained to the greatest extent, improving the quality and efficacy of the product; 2. The present invention directly mixes the dried Ganoderma lucidum slices with white tea, avoiding the drawback that strong substances such as thearubigin cover the delicate fragrance of Ganoderma lucidum during the traditional fermentation process, effectively enhancing the flavor and taste of Ganoderma lucidum, and at the same time reducing the introduction of irritating theophylline; 3. Through the innovative low-temperature flavor extraction and shaping drying process, the integrity and the characteristic of fine hair fragrance of white tea are ensured, effectively solving the problems of mildew or excessive oxidation prone to occur in white tea in the traditional process; 4. The present invention adopts precise temperature and humidity control. Especially through the low-temperature flavor extraction at 50-60 °C and the shaping drying at 45 °C, the effective synergistic effect between Ganoderma lucidum and white tea is realized, promoting the full diffusion and fusion of flavor molecules; 5. Through the optimized slice thickness and mixing ratio (1:4), combined with the non-fermentation process, the finished health-care white tea obtained has a slight Ganoderma lucidum flavor, obvious jujube fragrance, and low bitterness. Detailed implementation manners

[0011] To describe in detail the technical content, achieved purpose and effects of the present invention, the following is described in conjunction with the implementation manners.

[0012] Example 1 A preparation method of health-care white tea includes the following steps: Step 1. Pretreatment of Hericium erinaceus: Step 101. Wash Hericium erinaceus for 30 seconds and drain naturally; Step 102. Cut Hericium erinaceus into uniform thin slices with a thickness of 2-3 mm; (optimize the cell wall rupture rate (up to 85%, while maintaining the morphological integrity) Step 103. Place the cut Hericium erinaceus in a hot air oven at 50-60 °C and dry for 4-5 hours until the water content is controlled at 7-8%.

[0013] Step 2. Preparation of white tea base material: Step 201. Select fresh first-grade white peony white tea from Zhenghe production area; Step 202. Detect the water content of white tea to ensure that the water content is controlled at 5-6%.

[0014] Step 3. Dry blending: Mix the Ganoderma lucidum slices and the finished white tea according to the weight ratio of 1:4 to obtain a mixed material; Step 4. Low-temperature flavor extraction: Step 401. Place the mixed material in an oven at 50-60 °C for static flavor extraction for 1.5-2 hours; (promote the diffusion and fusion of aroma molecules, the temperature threshold protects the stability of catechins in white tea, there is no fermentation process throughout, and the highest process temperature ≤ 60 °C; prevent non-enzymatic oxidation of white tea and maintain the fine hair fragrance and honey rhyme characteristics of silver needle products) Step 402. Stir once every 30 minutes to promote the uniform distribution of aroma.

[0015] Step 5. Shaping drying: Step 501. Spread the flavor-extracted mixed material into a thin layer with a thickness not exceeding 2 cm; Step 502: Dry in a hot air oven at 45°C for 2 - 3 hours until the water content is controlled at 5 - 6%; (Lock in the fusion flavor and meet the tea storage standard) Step 503: Turn over every 30 minutes to prevent local over - drying.

[0016] In Step 6: Step 601: Ventilate and cool the dried material at room temperature to 28 - 30°C; Step 602: Pass through a 20 - mesh sieve to remove fine powder; Step 603: Place the obtained product in an aluminum foil composite bag, fill with nitrogen and seal, and control the oxygen transmission rate at 0.3 - 0.5 cc / m² / day. Prevent dew condensation and moisture absorption, and the nitrogen environment inhibits the oxidation of ganoderic triterpenoids (peroxide value < 0.1 g / 100 g).

[0017] Example 2 A preparation method of a health - care white tea, comprising the following steps: Step 1: Pretreatment of Juncao Ganoderma lucidum: Step 101: Wash the surface of fresh Juncao Ganoderma lucidum with running water within 30 seconds and drain naturally; Step 102: Cut the washed Juncao Ganoderma lucidum into uniform thin slices with a thickness of 2.5 mm; Step 103: Place the cut Juncao Ganoderma lucidum in a hot air oven at 55°C and dry for 4.5 hours until the water content is controlled at 7.5%.

[0018] Step 2: Preparation of white tea base material: Step 201: Select fresh first - grade white peony white tea from Zhenghe production area; Step 202: Detect the water content of the white tea to ensure that the water content is controlled at 5.8%.

[0019] Step 3: Dry - state blending: Step 301: Mix the dried Juncao Ganoderma lucidum slices obtained in Step 1 and the white tea obtained in Step 2 at a weight ratio of 1:4; Step 302: Check the mixing uniformity to ensure that the uniformity of the mixture reaches a good state.

[0020] Step 4: Low - temperature aroma enhancement: Step 401: Place the mixed material in an oven at 55°C and perform static aroma enhancement for 1.8 hours; Step 402: Turn over every 30 minutes to promote the uniform distribution of aroma.

[0021] Step 5: Shaping and drying: Step 501: Spread the aroma - enhanced mixture into a thin layer with a thickness of 1.8 cm; Step 502: Dry in a hot air oven at 45°C for 2.5 hours until the water content is controlled at 5.8%; Step 503: Turn over every 30 minutes to prevent local over-drying.

[0022] Step 6: Post-treatment: Step 601: Ventilate and cool the dried material to 28°C at room temperature; Step 602: Pass through a 20-mesh sieve to remove fine powder; Step 603: Place the obtained product in an aluminum foil composite bag and seal it with nitrogen.

[0023] Example 3 A preparation method of health-preserving white tea includes the following steps: Step 1: Pretreatment of Juncao Ganoderma lucidum: Step 101: Wash the surface of fresh Juncao Ganoderma lucidum with running water within 35 seconds and drain it naturally; Step 102: Cut the washed Juncao Ganoderma lucidum into uniform thin slices with a thickness of 2 mm; Step 103: Place the cut Juncao Ganoderma lucidum in a hot air oven at 60°C and dry for 5 hours until the water content is controlled at 7%.

[0024] Step 2: Preparation of white tea base material: Step 201: Select fresh Baihao Yinzhen white tea; Step 202: Detect the moisture content of the white tea to ensure that the moisture content is controlled at 5.5%.

[0025] Step 3: Dry blending: Step 301: Mix the dried Juncao Ganoderma lucidum slices obtained in Step 1 and the white tea obtained in Step 2 at a weight ratio of 1:4; Step 302: Check the mixing uniformity to ensure that the uniformity of the mixture reaches a good state.

[0026] Step 4: Low-temperature fragrance enhancement: Step 401: Place the mixed material in an oven at 58°C and perform static fragrance enhancement for 2 hours; Step 402: Turn over every 30 minutes to promote the uniform distribution of the fragrance.

[0027] Step 5: Shaping and drying: Step 501: Spread the fragrance-enhanced mixture into a thin layer with a thickness of 1.5 cm; Step 502: Place it in a hot air oven at 48°C and dry for 2 hours until the water content is controlled at 5%; Step 503: Turn over every 30 minutes to prevent local over-drying.

[0028] Step 6: Post-treatment: Step 601: Ventilate and cool the dried material at room temperature to 30°C; Step 602: Pass through a 20-mesh sieve to remove fine powder; Step 603: Place the obtained product in an aluminum foil composite bag, fill it with nitrogen and seal it.

[0029] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification of the present invention, directly or indirectly applied in the relevant technical fields, are similarly included in the patent protection scope of the present invention.

Claims

1. A preparation method of health-preserving white tea, characterized in that, It includes the following steps: Step 1, pretreatment of Juncao Ganoderma lucidum: Wash Juncao Ganoderma lucidum and cut it into slices to obtain Ganoderma lucidum slices; Step 2, preparation of white tea base material: Select finished white tea; Step 3, dry blending: Mix Ganoderma lucidum slices and finished white tea in a weight ratio of 1:4 to obtain a mixed material; Step 4, low-temperature fragrance enhancement: Place the mixed material in an oven at 50-60 °C for static fragrance enhancement for 1.5-2 hours; Step 5, shaping and drying: Place the mixed material obtained in Step 4 in a hot air oven at 45 °C and dry it for 2-3 hours until the water content is controlled at 5-6%; 2. The preparation method of the health-preserving white tea according to claim 1, characterized in that The specific content of Step 1 is as follows: Step 101, wash Juncao Ganoderma lucidum for 30 seconds and drain it naturally; Step 102, cut Juncao Ganoderma lucidum into uniform thin slices with a thickness of 2-3 mm; Step 103, place the cut Juncao Ganoderma lucidum in a hot air oven at 50-60 °C and dry it for 4-5 hours until the water content is controlled at 7-8%; 3. The preparation method of the health-care white tea according to claim 1, wherein, The finished white tea in Step 2 is one of Baihao Yinzhen, White Peony or Shoumei.

4. The preparation method of the health-care white tea according to claim 1, characterized in that, The specific content of Step 4 is as follows: Step 401, place the mixed material in an oven at 55 °C for static fragrance enhancement for 1.5-2 hours; Step 402, turn it over every 30 minutes to promote the uniform distribution of fragrance.

5. The preparation method of the health-care white tea according to claim 1, characterized in that, The specific content of Step 5 is as follows: Step 501, spread the mixed material after low-temperature fragrance enhancement into a thin layer with a thickness not exceeding 2 cm; Step 502, place it in a hot air oven at 45 °C and dry it for 2-3 hours until the water content is controlled at 5-6%; Step 503, turn it over every 30 minutes to prevent local over-drying.

6. The preparation method of the health-preserving white tea according to claim 1, characterized in that, It also includes Step 6, cool the mixed material obtained in Step 5 to 25-30 °C and then fill it with nitrogen for packaging.