WO2023000973A1 - 一种红茶及其制备方法 - Google Patents

一种红茶及其制备方法 Download PDF

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WO2023000973A1
WO2023000973A1 PCT/CN2022/103882 CN2022103882W WO2023000973A1 WO 2023000973 A1 WO2023000973 A1 WO 2023000973A1 CN 2022103882 W CN2022103882 W CN 2022103882W WO 2023000973 A1 WO2023000973 A1 WO 2023000973A1
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parts
leaves
extract
black tea
fatigue
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PCT/CN2022/103882
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English (en)
French (fr)
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姚婷
甘卓亭
方国强
黄益胜
张娜
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黄山学院
黄山市新安源冬茶研究院有限公司
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Publication of WO2023000973A1 publication Critical patent/WO2023000973A1/zh

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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F3/00—Tea; Tea substitutes; Preparations thereof
    • A23F3/34—Tea substitutes, e.g. matè; Extracts or infusions thereof

Definitions

  • the invention relates to the technical field of tea preparation, in particular to black tea and a preparation method thereof.
  • Black tea is a fully fermented tea, which is made from suitable new tea tree leaves as raw materials and refined through a series of processes such as withering, rolling, fermenting, and drying. Withering is an important process in the initial production of black tea, which is called “black tea” when it is initially produced.
  • the purpose of the present invention is in order to solve the shortcoming that exists in the prior art, and propose a kind of black tea and preparation method thereof.
  • a black tea comprising the following raw materials in parts by mass: 2 to 3 parts of licorice, 2 to 4 parts of tamarind gum, 1 to 3 parts of tartaric acid, 1 to 3 parts of prickly pear leaves, 2 to 4 parts of sodium citrate, mulberry 2-5 parts of white bark, 1-3 parts of ginkgo biloba, 4-6 parts of ginseng leaves, 4-6 parts of light bamboo leaves, 3-7 parts of Gynostemma pentaphyllum, 3-9 parts of anti-fatigue extract and 3-9 parts of anti-aging supplement share;
  • the anti-fatigue extract is prepared by mixing schisandra, dendrobium and raspberry polysaccharide as raw materials, and the anti-aging supplement is prepared by mixing vitamin E and bitter melon extract as raw materials.
  • the mixing mass ratio of the schisandra, dendrobium and raspberry polysaccharide is 1:1:2.
  • the preparation method of the raspberry polysaccharide is as follows: take dried raspberries, degrease with ether, extract with ethanol at a concentration of 75% to 95% v/v, filter, extract the filter residue with water, take the water extract and concentrate, add ethanol When the alcohol content reaches 75% to 85%, it is cooled and left to stand, and finally the solid is obtained, which is raspberry polysaccharide.
  • the extraction method of the anti-fatigue extract is as follows: weigh Schisandra chinensis, dendrobium and raspberry polysaccharides according to the amount, dry and pulverize them, and extract them with 95% alcohol at room temperature for 3 to 5 days to obtain 3 parts
  • For the extract mix and centrifuge the three extracts, distill under reduced pressure at 45°C to 55°C, evaporate the alcohol in the extract, and then distill the volume to a concentration of 1g/mL with distilled water to obtain the anti-fatigue extract.
  • the mixing mass ratio of the vitamin E and bitter melon extract is 2:1.
  • the preparation method of the anti-aging additive liquid is as follows: take bitter gourd extract, dry and crush it into a coarse powder, mix it with vitamin E, add 6-10 times the weight of water, soak for 3-12 hours, heat and boil, And keep it for 0.5-1.5 hours, filter out the juice, add 6-10 times the weight of water to the filter residue, heat and boil again for 0.5-1.5 hours, filter out the juice, combine the two juices, keep the temperature at 50°C-70°C, and concentrate the filtrate to 5 to 7 times the weight of the original raw material, and then filtered to obtain the anti-aging supplement.
  • a kind of preparation method of black tea is characterized in that, comprises the following steps:
  • Kneading Mix the raw material leaves that have been cooled in S1 and put them in a mixer, and pour tartaric acid into the mixer to mix evenly.
  • the belt is transported to the kneading machine, and the mixture is kneaded in a clockwise direction. After kneading for 1.5 to 1.9 hours, the kneading is completed and is ready for use;
  • Fermentation mix tamarind gum and sodium citrate, add 4% of the total amount of water and stir it into a liquid, then place it in a fermenter together with the finished tea leaves, spread it to a thickness of 10-15cm, First use nitrogen to exhaust the air in the fermenter, and then let it ferment under nitrogen atmosphere. During fermentation, add 4% of the total amount of tea leaves, glucose with a concentration of 1% and theanine solution of 3% of the total amount of tea leaves. 45°C-65°C, after 2-3 hours of fermentation, flip and toss for 1-5 minutes, continue to arrange to a thickness of 10-15cm, adjust the fermentation temperature to 50-70°C, ferment for 4-6 hours, and end the fermentation;
  • Rehumidification Spray the anti-fatigue extract and anti-aging additive on the tea leaves obtained after drying at a spraying rate of 0.1-0.3 parts/min until all spraying is complete, then continue to stir for 10-20 minutes, and then When placed in air at normal temperature and rehumidified to a water content of 5-6%, irradiated with ultraviolet light within the wavelength range of 240-280nm for 30-60min to sterilize and pack it to obtain the finished black tea.
  • the kneading temperature in S2 is controlled at 45°C-75°C, and the pressure used during kneading is 3.2-4.0kg/m 3 .
  • the inlet temperature of the dryer in S4 is 30°C-40°C, and the outlet temperature of the dryer is 80°C-90°C.
  • Adding anti-aging additives prepared from vitamin E and bitter melon extracts during the preparation of black tea can effectively inhibit monoamine chlorase and increase the content of catecholamines, thereby further improving the anti-aging oxidation effect.
  • the present invention can not only improve the fatigue of the user, but also effectively improve the anti-aging ability of the tea for the user.
  • a black tea comprising the following raw materials in parts by mass: 2 to 3 parts of licorice, 2 to 4 parts of tamarind gum, 1 to 3 parts of tartaric acid, 1 to 3 parts of prickly pear leaves, 2 to 4 parts of sodium citrate, mulberry 2-5 parts of white bark, 1-3 parts of ginkgo biloba, 4-6 parts of ginseng leaves, 4-6 parts of light bamboo leaves, 3-7 parts of Gynostemma pentaphyllum, 3-9 parts of anti-fatigue extract and 3-9 parts of anti-aging supplement share;
  • the anti-fatigue extract is prepared by mixing Schisandra chinensis, dendrobium and raspberry polysaccharide as raw materials, and the mixing mass ratio of schisandra, dendrobium and raspberry polysaccharide is 1:1:2, and the anti-aging supplement is composed of vitamin E and bitter melon extract It is prepared by mixing raw materials, and the mixing mass ratio of vitamin E and bitter melon extract is 2:1;
  • bitter gourd extract The preparation method of bitter gourd extract is as follows:
  • 2Purification Put the particles obtained in step 1 into the evaporating flask of a rotary evaporator, add absolute ethanol at a solid-to-liquid ratio of 0.3-0.4g/mL, and heat for 2-2.5h until the height of the alcohol in the evaporating flask is equal to that of the evaporating flask.
  • the height of the materials in the medium is consistent, remove the evaporating bottle, then add 1/3 of the first addition of absolute ethanol to heat for 1-1.2h, cool, take the supernatant, and refrigerate to obtain the bitter gourd extract.
  • the preparation method of the above-mentioned raspberry polysaccharide is as follows: take dried raspberries, degrease them with ether, extract them with 75% v/v ethanol, filter, add water to the filter residue, concentrate the water extract, add ethanol until the alcohol content reaches 80% , cooling, standing, and finally obtain a solid that is raspberry polysaccharide.
  • the extraction method of the above-mentioned anti-fatigue extract is as follows: weigh the schisandra, dendrobium and raspberry polysaccharide according to the amount, dry and pulverize them, and extract them with 95% alcohol at room temperature for 5 days to obtain 3 extracts, After the three extracts were mixed and centrifuged, they were distilled under reduced pressure at 50°C, the alcohol in the extract was evaporated, and then the volume was adjusted to a mass concentration of 1g/mL with distilled water to obtain the anti-fatigue extract.
  • the preparation method of the anti-aging additive liquid is as follows: take the bitter melon extract, dry and crush it into a coarse powder, mix it with vitamin E, add 8 times the weight of water, soak for 6 hours, heat and boil for 1 hour, filter out the juice, Add 8 times the weight of water to the filter residue, heat and boil again for 1 hour, filter out the juice, combine the two juices, keep the temperature at 60°C, concentrate the filtrate to 6 times the weight of the original raw material, and filter to obtain the anti-aging supplement.
  • a preparation method of black tea comprising the following steps:
  • Kneading Mix the raw material leaves that have been cooled in S1 and put them in a mixer, and pour tartaric acid into the mixer to mix evenly.
  • the belt is transported to the kneading machine, and the mixture is kneaded in a clockwise direction.
  • the kneading temperature is controlled at 45°C-75°C, and the pressure used during kneading is 3.2-4.0kg/m 3 . After kneading for 1.5-1.9h, the kneading is completed. stand-by;
  • Rehumidification Spray the anti-fatigue extract and anti-aging additive on the tea leaves obtained after drying at a spraying rate of 0.1-0.3 parts/min until all spraying is complete, then continue to stir for 10-20 minutes, and then When it is placed in air at normal temperature and rehumidified to a water content of 5-6%, it is irradiated with ultraviolet light in the wavelength range of 240-280nm for 30-60 minutes to sterilize and pack it to obtain the finished black tea.
  • a black tea comprising the following raw materials in parts by mass: 2 parts of licorice, 2 parts of tamarind gum, 1 part of tartaric acid, 1 part of Rosa roxburghii leaves, 2 parts of sodium citrate, 2 parts of Cortex Mori, 1 part of Ginkgo biloba, ginseng 4 parts of leaves, 4 parts of bamboo leaves, 3 parts of Gynostemma pentaphyllum, 3 parts of anti-fatigue extract and 3 parts of anti-aging supplement. Extract.
  • a black tea comprising the following raw materials in parts by mass: 2.5 parts of licorice, 3 parts of tamarind gum, 2 parts of tartaric acid, 2 parts of Rosa roxburghii leaves, 3 parts of sodium citrate, 4 parts of Cortex Mori, 2 parts of Ginkgo biloba, 5 parts of ginseng leaves, 5 parts of bamboo leaves, 5 parts of Gynostemma pentaphyllum, 6 parts of anti-fatigue extract and 6 parts of anti-aging supplement.
  • Bitter melon extract 2.5 parts of licorice, 3 parts of tamarind gum, 2 parts of tartaric acid, 2 parts of Rosa roxburghii leaves, 3 parts of sodium citrate, 4 parts of Cortex Mori, 2 parts of Ginkgo biloba, 5 parts of ginseng leaves, 5 parts of bamboo leaves, 5 parts of Gynostemma pentaphyllum, 6 parts of anti-fatigue extract and 6 parts of anti-aging supplement.
  • a black tea comprising the following raw materials in parts by mass: 3 parts of licorice, 4 parts of tamarind gum, 3 parts of tartaric acid, 3 parts of Rosa roxburghii leaves, 4 parts of sodium citrate, 5 parts of Cortex Mori, 3 parts of Ginkgo biloba, 6 parts of ginseng leaves, 6 parts of bamboo leaves, 7 parts of Gynostemma pentaphylla, 9 parts of anti-fatigue extract and 9 parts of anti-aging supplement.
  • Bitter melon extract 3 parts of licorice, 4 parts of tamarind gum, 3 parts of tartaric acid, 3 parts of Rosa roxburghii leaves, 4 parts of sodium citrate, 5 parts of Cortex Mori, 3 parts of Ginkgo biloba, 6 parts of ginseng leaves, 6 parts of bamboo leaves, 7 parts of Gynostemma pentaphylla, 9 parts of anti-fatigue extract and 9 parts of anti-aging supplement.
  • Kneading Mix the raw material leaves that have been cooled in S1 and place them in a mixer, pour tartaric acid into them and stir evenly.
  • stirring first use a stirring speed of 300r/min to stir for 30min, and then use a conveyor belt to transport to kneading
  • the mixture is kneaded in a clockwise direction, the kneading temperature is controlled at 55°C, and the pressure used during kneading is 4.0kg/m 3 , after kneading for 1.6h, the kneading is completed and ready for use;
  • Fermentation mix tamarind gum and sodium citrate, add 4% of the total amount of water and stir it into a liquid, then place it in a fermenter together with the finished tea leaves, spread it to a thickness of 10-15cm, First use nitrogen to exhaust the air in the fermenter, and then let it ferment under nitrogen atmosphere. During fermentation, add 4% of the total amount of tea leaves, glucose with a concentration of 1% and theanine solution of 3% of the total amount of tea leaves. 50°C, after 3 hours of fermentation, turn over and throw for 2 minutes, continue to arrange to a thickness of 10-15cm, adjust the fermentation temperature to 65°C, and finish fermentation after 5 hours of fermentation;
  • Drying Put the fermented tea leaves in a dryer, and use the tea leaves to move from left to right for drying.
  • the temperature at the inlet of the dryer is 35°C
  • the temperature at the outlet of the dryer is 85°C.
  • the temperature increases by 3°C from left to right.
  • adjust the moving speed of the tea leaves in the dryer so that the moisture content of the tea leaves from the outlet of the dryer is 2-3%.
  • Rehumidification Spray the anti-fatigue extract and anti-aging additive on the tea leaves obtained after drying. The spraying speed is 0.1 part/min until all the spraying is completed. Then continue to stir for 15 minutes, and then place it in the air at room temperature. After medium rehumidification until the water content is 5-6%, it is sterilized by irradiating ultraviolet rays for 60 minutes in the wavelength range of 240-280nm and then packaged to obtain the finished black tea.
  • a black tea comprising the following raw materials in parts by mass: 2 parts of licorice, 2 parts of tamarind gum, 1 part of tartaric acid, 1 part of Rosa roxburghii leaves, 2 parts of sodium citrate, 2 parts of Cortex Mori, 1 part of Ginkgo biloba, 4 parts of ginseng leaves, 4 parts of bamboo leaves, 3 parts of Gynostemma pentaphyllum, 3 parts of anti-aging supplement containing vitamin E and bitter melon extract.
  • a black tea comprising the following raw materials in parts by mass: 2.5 parts of licorice, 3 parts of tamarind gum, 2 parts of tartaric acid, 2 parts of Rosa roxburghii leaves, 3 parts of sodium citrate, 4 parts of Cortex Mori, 2 parts of Ginkgo biloba, 5 parts of ginseng leaves, 5 parts of light bamboo leaves, 5 parts of Gynostemma pentaphylla, 6 parts of anti-aging supplement, which contains vitamin E and bitter melon extract.
  • a black tea comprising the following raw materials in parts by mass: 3 parts of licorice, 4 parts of tamarind gum, 3 parts of tartaric acid, 3 parts of Rosa roxburghii leaves, 4 parts of sodium citrate, 5 parts of Cortex Mori, 3 parts of Ginkgo biloba, 6 parts of ginseng leaves, 6 parts of light bamboo leaves, 7 parts of Gynostemma pentaphylla, 9 parts of anti-aging supplement, which contains vitamin E and bitter melon extract.
  • Kneading Mix the raw material leaves that have been cooled in S1 and place them in a mixer, pour tartaric acid into them and stir evenly.
  • stirring first use a stirring speed of 300r/min to stir for 30min, and then use a conveyor belt to transport to kneading
  • the mixture is kneaded in a clockwise direction, the kneading temperature is controlled at 55°C, and the pressure used during kneading is 4.0kg/m 3 , after kneading for 1.6h, the kneading is completed and ready for use;
  • Drying Put the fermented tea leaves in a dryer, and use the tea leaves to move from left to right for drying.
  • the temperature at the inlet of the dryer is 35°C
  • the temperature at the outlet of the dryer is 85°C.
  • the temperature increases by 3°C from left to right.
  • adjust the moving speed of the tea leaves in the dryer so that the moisture content of the tea leaves from the outlet of the dryer is 2-3%.
  • Rehumidification Spray the anti-aging additive liquid on the tea obtained after drying at a spraying speed of 0.2 parts/min until all the spraying is completed, then continue to stir for 10-20 minutes, and then place it in the air at room temperature for rehumidification
  • the water content is 5-6%, it is sterilized by irradiating ultraviolet rays for 60 minutes in the wavelength range of 240-280nm and packed to obtain the finished black tea.
  • a black tea comprising the following raw materials in parts by mass: 2 parts of licorice, 2 parts of tamarind gum, 1 part of tartaric acid, 1 part of Rosa roxburghii leaves, 2 parts of sodium citrate, 2 parts of Cortex Mori, 1 part of Ginkgo biloba, 4 parts of ginseng leaves, 4 parts of bamboo leaves, 3 parts of Jiaogulan, 3 parts of anti-fatigue extract and 3 parts of anti-aging supplement.
  • the anti-fatigue extract contains only Schisandra and Dendrobium, and the anti-aging supplement contains vitamin E and bitter melon extract .
  • a black tea comprising the following raw materials in parts by mass: 2.5 parts of licorice, 3 parts of tamarind gum, 2 parts of tartaric acid, 2 parts of Rosa roxburghii leaves, 3 parts of sodium citrate, 4 parts of Cortex Mori, 2 parts of Ginkgo biloba, 5 parts of ginseng leaves, 5 parts of bamboo leaves, 5 parts of Jiaogulan, 6 parts of anti-fatigue extract, and 6 parts of anti-aging supplement.
  • the anti-fatigue extract contains only Schisandra and Dendrobium, and the anti-aging supplement contains vitamin E and bitter melon extract .
  • a black tea comprising the following raw materials in parts by mass: 3 parts of licorice, 4 parts of tamarind gum, 3 parts of tartaric acid, 3 parts of Rosa roxburghii leaves, 4 parts of sodium citrate, 5 parts of Cortex Mori, 3 parts of Ginkgo biloba, 6 parts of ginseng leaves, 6 parts of bamboo leaves, 7 parts of Jiaogulan, 9 parts of anti-fatigue extract, and 9 parts of anti-aging supplement.
  • the anti-fatigue extract contains only Schisandra and Dendrobium, and the anti-aging supplement contains vitamin E and bitter melon extract .
  • the anti-fatigue extracts were prepared only from Schisandra chinensis and Dendrobium, and the finished black tea was prepared through the same steps as in the examples.
  • mice in the examples took the shortest time in the three tests of pole climbing, swimming and load swimming, and the mice in the reference example took the second shortest time.
  • the mice in the experiment took the longest time in the three tests. It can be seen that the mice in the embodiment and the reference example can quickly reduce their sense of fatigue after taking the tea containing the anti-fatigue extract, and by It is also known that adding an appropriate amount of raspberry polysaccharide to the anti-fatigue extract can further improve the anti-fatigue effect.
  • a black tea comprising the following raw materials in parts by mass: 2 parts of licorice, 2 parts of tamarind gum, 1 part of tartaric acid, 1 part of Rosa roxburghii leaves, 2 parts of sodium citrate, 2 parts of Cortex Mori, 1 part of Ginkgo biloba, 4 parts of ginseng leaves, 4 parts of bamboo leaves, 3 parts of Gynostemma pentaphyllum, 3 parts of anti-fatigue extract, the anti-fatigue extract contains schisandra, dendrobium and raspberry polysaccharides.
  • a black tea comprising the following raw materials in parts by mass: 2.5 parts of licorice, 3 parts of tamarind gum, 2 parts of tartaric acid, 2 parts of Rosa roxburghii leaves, 3 parts of sodium citrate, 4 parts of Cortex Mori, 2 parts of Ginkgo biloba, 5 parts of ginseng leaves, 5 parts of bamboo leaves, 5 parts of Gynostemma pentaphyllum, 6 parts of anti-fatigue extract, which contains polysaccharides from schisandra, dendrobium and raspberry.
  • a black tea comprising the following raw materials in parts by mass: 3 parts of licorice, 4 parts of tamarind gum, 3 parts of tartaric acid, 3 parts of Rosa roxburghii leaves, 4 parts of sodium citrate, 5 parts of Cortex Mori, 3 parts of Ginkgo biloba, 6 parts of ginseng leaves, 6 parts of bamboo leaves, 7 parts of Gynostemma pentaphyllum, 9 parts of anti-fatigue extract, which contains polysaccharides from schisandra, dendrobium and raspberry.
  • Kneading Mix the raw material leaves that have been cooled in S1 and place them in a mixer, pour tartaric acid into them and stir evenly.
  • stirring first use a stirring speed of 300r/min to stir for 30min, and then use a conveyor belt to transport to kneading
  • the mixture is kneaded in a clockwise direction, the kneading temperature is controlled at 55°C, and the pressure used during kneading is 4.0kg/m 3 , after kneading for 1.6h, the kneading is completed and ready for use;
  • Fermentation mix tamarind gum and sodium citrate, add 4% of the total amount of water and stir it into a liquid, then place it in a fermenter together with the finished tea leaves, and spread it to a thickness of 10-15cm. Use nitrogen to discharge the air in the fermenter, and then make it ferment under nitrogen atmosphere. During fermentation, add 4% of the total amount of tea leaves, glucose with a concentration of 1% and theanine solution of 3% of the total amount of tea leaves. The fermentation temperature is 50°C, after 3 hours of fermentation, turn over and throw for 2 minutes, continue to arrange to a thickness of 10-15cm, adjust the fermentation temperature to 65°C, and finish fermentation after 5 hours of fermentation;
  • Drying Put the fermented tea leaves in a dryer, and use the tea leaves to move from left to right for drying.
  • the temperature at the inlet of the dryer is 35°C
  • the temperature at the outlet of the dryer is 85°C.
  • the temperature increases by 3°C from left to right.
  • adjust the moving speed of the tea leaves in the dryer so that the moisture content of the tea leaves from the outlet of the dryer is 2-3%.
  • Rehumidification Spray the anti-fatigue extract and anti-aging additive on the tea leaves obtained after drying. The spraying speed is 0.1 part/min until all the spraying is completed. Then continue to stir for 15 minutes, and then place it in the air at room temperature. Rehumidify to 5-6% water content, irradiate with ultraviolet light in the wavelength range of 240-280nm for 60 minutes to sterilize and pack it, and then obtain the finished black tea.
  • a black tea comprising the following raw materials in parts by mass: 2 parts of licorice, 2 parts of tamarind gum, 1 part of tartaric acid, 1 part of Rosa roxburghii leaves, 2 parts of sodium citrate, 2 parts of Cortex Mori, 1 part of Ginkgo biloba, 4 parts of ginseng leaves, 4 parts of bamboo leaves, 3 parts of Gynostemma pentaphyllum, 3 parts of anti-fatigue extract and 3 parts of anti-aging supplement. .
  • a black tea comprising the following raw materials in parts by mass: 2.5 parts of licorice, 3 parts of tamarind gum, 2 parts of tartaric acid, 2 parts of Rosa roxburghii leaves, 3 parts of sodium citrate, 4 parts of Cortex Mori, 2 parts of Ginkgo biloba, 5 parts of ginseng leaves, 5 parts of bamboo leaves, 5 parts of Gynostemma pentaphyllum, 6 parts of anti-fatigue extract and 6 parts of anti-aging supplement. .
  • a black tea comprising the following raw materials in parts by mass: 3 parts of licorice, 4 parts of tamarind gum, 3 parts of tartaric acid, 3 parts of Rosa roxburghii leaves, 4 parts of sodium citrate, 5 parts of Cortex Mori, 3 parts of Ginkgo biloba, 6 parts of ginseng leaves, 6 parts of bamboo leaves, 7 parts of Gynostemma pentaphyllum, 9 parts of anti-fatigue extract and 9 parts of anti-aging supplement. .
  • the anti-fatigue extract was prepared only from Schisandra chinensis and Dendrobium, and the finished black tea was prepared through the same steps as in the examples.
  • the antioxidant capacity of the black tea in the examples, comparative examples and reference examples from strong to weak is in the order of examples>reference examples>comparative examples, that is, the black tea prepared in the comparative examples is most likely to be oxidized, thus It can be seen that the anti-aging additive solution made of vitamin E can have a certain anti-aging effect, and the addition of bitter melon extract to it can further improve the anti-aging effect of black tea.

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Abstract

一种红茶及其制备方法，该红茶按质量份计包括以下原料：甘草2～3份、罗望子胶2～4份、刺梨叶1～3份、枸橼酸钠2～4份、桑白皮2～5份、银杏叶1～3份、人参叶4～6份、淡竹叶4～6份、绞股蓝3～7份、抗疲劳提取液3～9份以及抗衰老添加液3～9份，其中，抗疲劳提取液由五味子、石斛和树莓多糖为原料混合制备而成，抗衰老添加液由维生素E和苦瓜提取物为原料混合制备而成。该红茶能够改善疲劳感，并能改善抗衰老能力。

Description

一种红茶及其制备方法 技术领域
本发明涉及茶叶制备技术领域，尤其涉及一种红茶及其制备方法。
背景技术
红茶在加工过程中发生以茶多酚酶促氧化为中心的化学反应，鲜叶成分变化较大，茶多酚减少90％以上，产生了茶黄素、茶红素等新成分和香气物质，具有红茶、红汤、红叶、香甜味醇的特征。
红茶属全发酵茶，是以适宜的茶树新牙叶为原料，经萎凋、揉捻、发酵、干燥等一系列工艺过程精制而成的茶。萎凋是红茶初制的重要工艺，红茶在初制时称为“乌茶”。
而通常我们品尝红茶就是为了舒缓心情，缓解疲劳，而现有的红茶对去除疲劳的作用并不佳，而且其抗衰老的能力也有待改善。因此，我们提出了一种红茶及其制备方法用于解决上述问题。
发明内容
本发明的目的是为了解决现有技术中存在的缺点，而提出的一种红茶及其制备方法。
一种红茶，按质量份计包括以下原料：甘草2～3份、罗望子胶2～4份、酒石酸1～3份、刺梨叶1～3份、枸橼酸钠2～4份、桑白皮2～5份、银杏叶1～3份、人参叶4～6份、淡竹叶4～6份、绞股蓝3～7份、抗疲劳提取液3～9份以及抗衰老添加液3～9份；
其中，抗疲劳提取液由五味子、石斛和树莓多糖为原料混合制备 而成，抗衰老添加液由维生素E和苦瓜提取物为原料混合制备而成。
优选的，所述五味子、石斛和树莓多糖的混合质量比为1:1:2。
优选的，所述树莓多糖的制备方法为：取干燥树莓，经乙醚脱脂后，用浓度75％～95％v/v乙醇提取，过滤，滤渣加水提取，取水提液浓缩后，加乙醇至含醇量达到75％～85％，冷却、静置，最后取得固形物即为树莓多糖。
优选的，所述抗疲劳提取液的提取方法为：按量称取五味子、石斛和树莓多糖，并将其烘干粉碎，并分别用95％酒精常温下萃取3～5天，获得3份提取液，将3份提取液混合离心后，于45℃～55℃减压蒸馏，将提取液中的酒精蒸发，然后用蒸馏水定容到质量浓度为1g/mL，即得抗疲劳提取液。
优选的，所述维生素E和苦瓜提取物的混合质量比为2:1。
优选的，所述抗衰老添加液的制备方法为：称取苦瓜提取物，干燥并破碎成粗粉，与维生素E混合，加入6～10倍重量的水，浸泡3～12小时，加热煮沸，并保持0.5～1.5小时，滤出汁液，滤渣加6～10倍重量的水，再次加热煮沸0.5～1.5小时，滤出汁液，合并两次汁液，保持温度在50℃～70℃，将滤液浓缩至初始原料重量的5～7倍，过滤即得抗衰老添加液。
一种红茶的制备方法，其特征在于，包括以下步骤：
S1、萎凋：按配比份取新鲜的甘草、银杏叶、人参叶、淡竹叶、绞股蓝、刺梨叶、桑白皮分别摊放在竹制簸箕上，置于恒温箱中摊凉萎凋至水分含量为35～38％后，摊凉温度控制在25℃～35℃；
S2、揉捻：将S1摊凉结束的原料叶进行混合并置于搅拌机中，并倒入酒石酸搅拌均匀，在搅拌时，先采用搅拌速度为250～350r/min搅拌20～40min后，随后采用输送带输送至揉捻机中，采用顺时针方向揉捻混合料，揉捻1.5～1.9h后，揉捻完成，待用；
S3、发酵：将罗望子胶与枸缘酸钠混合，添加其总量4％的清水搅拌成液体，再同杀青完成后的茶叶一起置于发酵机中，摊放成厚度为10～15cm，先用氮气将发酵机内空气排出，再令其在氮气的气氛下进行发酵，发酵时添加茶叶总量4％的浓度为1％的葡萄糖和茶叶总量3％的茶氨酸溶液，发酵温度为45℃～65℃，发酵2～3h后，翻抛1～5min，继续整理成10～15cm厚，调整发酵温度为50℃～70℃，发酵4～6h后，结束发酵；
S4、烘干：将发酵结束的茶叶置于烘干机中，采用茶叶从左至右移动式烘干，烘干机中的温度从左至右呈2℃～5℃递增，烘干时，调整茶叶在烘干机中的移动速度，使得从烘干机出口出来的茶叶的水分含量为2～3％即可；
S5、回湿：向烘干后获得的茶叶喷洒喷洒抗疲劳提取液和抗衰老添加液，喷洒速度为0.1～0.3份/min，直至全部喷洒完为止，随后继续搅拌10～20min，再将其置于常温空气中回湿至含水量为5～6％时，在240～280nm的波长范围内用紫外线照射30～60min灭菌并对其进行包装，即获得成品红茶。
优选的，所述S2中揉捻温度控制在45℃～75℃，且揉捻时采用的压力为3.2～4.0kg/m 3。
优选的，所述S4中烘干机进口温度为30℃～40℃，烘干机出口温度为80℃～90℃。
相比于现有技术，本发明的有益效果是：
1、在红茶的制备过程中加入由五味子、石斛和树莓多糖为原料制备的抗疲劳提取液，能够有效地改善服用茶水后的疲劳感，使疲劳后的肌肉能够尽快恢复。
2、在红茶的制备过程中加入由维生素E和苦瓜提取物为原料制备的抗衰老添加液，能够有效地抑制单胺氯化酶，增加儿茶酚胺的含量，从而进一步的提高抗衰老氧化效果。
综上所述，本发明不仅能够改善服用者的疲劳感，而且还能有效地改善该茶叶对服用者的抗衰老能力。
具体实施方式
下面结合具体实施例对本发明作进一步解说。
一种红茶，按质量份计包括以下原料：甘草2～3份、罗望子胶2～4份、酒石酸1～3份、刺梨叶1～3份、枸橼酸钠2～4份、桑白皮2～5份、银杏叶1～3份、人参叶4～6份、淡竹叶4～6份、绞股蓝3～7份、抗疲劳提取液3～9份以及抗衰老添加液3～9份；
其中，抗疲劳提取液由五味子、石斛和树莓多糖为原料混合制备而成，五味子、石斛和树莓多糖的混合质量比为1:1:2，抗衰老添加液由维生素E和苦瓜提取物为原料混合制备而成，维生素E和苦瓜提取物的混合质量比为2:1；
苦瓜提取物的制备方法如下：
①粉碎:将新鲜苦瓜切成均匀薄片，在90-100℃下干燥1-2h去除水分，再粉碎成粒径0-0.5mm的颗粒；
②提纯:将步骤①得到的颗粒放入旋转蒸发仪的蒸发瓶中，按0.3-0.4g/mL的固液比加入无水乙醇，加热2-2.5h至蒸发瓶中酒精的高度与蒸发瓶中物料的高度一致时，取下蒸发瓶，再加入第一次加入量1/3的无水乙醇加热1-1.2h，冷却，取上清液，冷藏，即得苦瓜提取物。
上述树莓多糖的制备方法为：取干燥树莓，经乙醚脱脂后，用浓度75％v/v乙醇提取，过滤，滤渣加水提取，取水提液浓缩后，加乙醇至含醇量达到80％，冷却、静置，最后取得固形物即为树莓多糖。
进一步的，上述抗疲劳提取液的提取方法为：按量称取五味子、石斛和树莓多糖，并将其烘干粉碎，并分别用95％酒精常温下萃取5天，获得3份提取液，将3份提取液混合离心后，于50℃减压蒸馏，将提取液中的酒精蒸发，然后用蒸馏水定容到质量浓度为1g/mL，即得抗疲劳提取液。
抗衰老添加液的制备方法为：称取苦瓜提取物，干燥并破碎成粗粉，与维生素E混合，加入8倍重量的水，浸泡6小时，加热煮沸，并保持1小时，滤出汁液，滤渣加8倍重量的水，再次加热煮沸1小时，滤出汁液，合并两次汁液，保持温度在60℃，将滤液浓缩至初始原料重量的6倍，过滤即得抗衰老添加液。
一种红茶的制备方法，包括以下步骤：
S1、萎凋：按配比份取新鲜的甘草、银杏叶、人参叶、淡竹叶、 绞股蓝、刺梨叶、桑白皮分别摊放在竹制簸箕上，置于恒温箱中摊凉萎凋至水分含量为35～38％后，摊凉温度控制在25℃～35℃；
S2、揉捻：将S1摊凉结束的原料叶进行混合并置于搅拌机中，并倒入酒石酸搅拌均匀，在搅拌时，先采用搅拌速度为250～350r/min搅拌20～40min后，随后采用输送带输送至揉捻机中，采用顺时针方向揉捻混合料，揉捻温度控制在45℃～75℃，且揉捻时采用的压力为3.2～4.0kg/m 3，揉捻1.5～1.9h后，揉捻完成，待用；
S3、将罗望子胶与枸缘酸钠混合，添加其总量4％的清水搅拌成液体，再同杀青完成后的茶叶一起置于发酵机中，摊放成厚度为10～15cm，先用氮气将发酵机内空气排出，再令其在氮气的气氛下进行发酵，发酵时添加茶叶总量4％的浓度为1％的葡萄糖和茶叶总量3％的茶氨酸溶液，发酵温度为45℃～65℃，发酵2～3h后，翻抛1～5min，继续整理成10～15cm厚，调整发酵温度为50℃～70℃，发酵4～6h后，结束发酵；
S4、烘干：将发酵结束的茶叶置于烘干机中，采用茶叶从左至右移动式烘干，烘干机进口温度为30℃～40℃，烘干机出口温度为80℃～90℃，烘干机中的温度从左至右呈2℃～5℃递增，烘干时，调整茶叶在烘干机中的移动速度，使得从烘干机出口出来的茶叶的水分含量为2～3％即可；
S5、回湿：向烘干后获得的茶叶喷洒喷洒抗疲劳提取液和抗衰老添加液，喷洒速度为0.1～0.3份/min，直至全部喷洒完为止，随后继续搅拌10～20min，再将其置于常温空气中回湿至含水量为5～6％ 时，在240～280nm的波长范围内用紫外线照射30～60min灭菌并对其进行包装，即获得成品红茶。
实施例1：
一种红茶，按质量份计包括以下原料：甘草2份、罗望子胶2份、酒石酸1、刺梨叶1份、枸橼酸钠2份、桑白皮2份、银杏叶1份、人参叶4份、淡竹叶4份、绞股蓝3份、抗疲劳提取液3份以及抗衰老添加液3份，抗疲劳提取液中含五味子、石斛和树莓多糖，抗衰老添加液含维生素E和苦瓜提取物。
实施例2：
一种红茶，按质量份计包括以下原料：甘草2.5份、罗望子胶3份、酒石酸2份、刺梨叶2份、枸橼酸钠3份、桑白皮4份、银杏叶2份、人参叶5份、淡竹叶5份、绞股蓝5份、抗疲劳提取液6份以及抗衰老添加液6份，抗疲劳提取液中含五味子、石斛和树莓多糖，抗衰老添加液含维生素E和苦瓜提取物。
实施例3：
一种红茶，按质量份计包括以下原料：甘草3份、罗望子胶4份、酒石酸3份、刺梨叶3份、枸橼酸钠4份、桑白皮5份、银杏叶3份、人参叶6份、淡竹叶6份、绞股蓝7份、抗疲劳提取液9份以及抗衰老添加液9份，抗疲劳提取液中含五味子、石斛和树莓多糖，抗衰老添加液含维生素E和苦瓜提取物。
上述实施例1～3中，均通过下述步骤进行制备成品红茶，具体过程如下：
S1、萎凋：按配比份取新鲜的甘草、银杏叶、人参叶、淡竹叶、绞股蓝、刺梨叶、桑白皮分别摊放在竹制簸箕上，置于恒温箱中摊凉萎凋至水分含量为35～38％后，摊凉温度控制在32℃；
S2、揉捻：将S1摊凉结束的原料叶进行混合并置于搅拌机中，并倒入酒石酸搅拌均匀，在搅拌时，先采用搅拌速度为300r/min搅拌30min后，随后采用输送带输送至揉捻机中，采用顺时针方向揉捻混合料，揉捻温度控制在55℃，且揉捻时采用的压力为4.0kg/m 3，揉捻1.6h后，揉捻完成，待用；
S3、发酵：将罗望子胶与枸缘酸钠混合，添加其总量4％的清水搅拌成液体，再同杀青完成后的茶叶一起置于发酵机中，摊放成厚度为10～15cm，先用氮气将发酵机内空气排出，再令其在氮气的气氛下进行发酵，发酵时添加茶叶总量4％的浓度为1％的葡萄糖和茶叶总量3％的茶氨酸溶液，发酵温度为50℃，发酵3h后，翻抛2min，继续整理成10～15cm厚，调整发酵温度为65℃，发酵5h后，结束发酵；
S4、烘干：将发酵结束的茶叶置于烘干机中，采用茶叶从左至右移动式烘干，烘干机进口温度为35℃，烘干机出口温度为85℃，烘干机中的温度从左至右呈3℃递增，烘干时，调整茶叶在烘干机中的移动速度，使得从烘干机出口出来的茶叶的水分含量为2～3％即可；
S5、回湿：向烘干后获得的茶叶喷洒喷洒抗疲劳提取液和抗衰老添加液，喷洒速度为0.1份/min，直至全部喷洒完为止，随后继续搅拌15min，再将其置于常温空气中回湿至含水量为5～6％时，在240～ 280nm的波长范围内用紫外线照射60min灭菌并对其进行包装，即获得成品红茶。
试验一：对该红茶的抗疲劳效果进行实验
对比例1：
一种红茶，按质量份计包括以下原料：甘草2份、罗望子胶2份、酒石酸1份、刺梨叶1份、枸橼酸钠2份、桑白皮2份、银杏叶1份、人参叶4份、淡竹叶4份、绞股蓝3份、抗衰老添加液3份，抗衰老添加液含维生素E和苦瓜提取物。
对比例2：
一种红茶，按质量份计包括以下原料：甘草2.5份、罗望子胶3份、酒石酸2份、刺梨叶2份、枸橼酸钠3份、桑白皮4份、银杏叶2份、人参叶5份、淡竹叶5份、绞股蓝5份、抗衰老添加液6份，抗衰老添加液含维生素E和苦瓜提取物。
对比例3：
一种红茶，按质量份计包括以下原料：甘草3份、罗望子胶4份、酒石酸3份、刺梨叶3份、枸橼酸钠4份、桑白皮5份、银杏叶3份、人参叶6份、淡竹叶6份、绞股蓝7份、抗衰老添加液9份，抗衰老添加液含维生素E和苦瓜提取物。
上述对比例1～3中，均无添加抗疲劳提取液，且通过下述步骤进行制备成品红茶，具体过程如下：
S1、萎凋：按配比份取新鲜的甘草、银杏叶、人参叶、淡竹叶、绞股蓝、刺梨叶、桑白皮分别摊放在竹制簸箕上，置于恒温箱中摊凉 萎凋至水分含量为35～38％后，摊凉温度控制在32℃；
S2、揉捻：将S1摊凉结束的原料叶进行混合并置于搅拌机中，并倒入酒石酸搅拌均匀，在搅拌时，先采用搅拌速度为300r/min搅拌30min后，随后采用输送带输送至揉捻机中，采用顺时针方向揉捻混合料，揉捻温度控制在55℃，且揉捻时采用的压力为4.0kg/m 3，揉捻1.6h后，揉捻完成，待用；
S3、将罗望子胶与枸缘酸钠混合，添加其总量4％的清水搅拌成液体，再同杀青完成后的茶叶一起置于发酵机中，摊放成厚度为10～15cm，先用氮气将发酵机内空气排出，再令其在氮气的气氛下进行发酵，发酵时添加茶叶总量4％的浓度为1％的葡萄糖和茶叶总量3％的茶氨酸溶液，发酵温度为50℃，发酵3h后，翻抛2min，继续整理成10～15cm厚，调整发酵温度为65℃，发酵5h后，结束发酵；
S4、烘干：将发酵结束的茶叶置于烘干机中，采用茶叶从左至右移动式烘干，烘干机进口温度为35℃，烘干机出口温度为85℃，烘干机中的温度从左至右呈3℃递增，烘干时，调整茶叶在烘干机中的移动速度，使得从烘干机出口出来的茶叶的水分含量为2～3％即可；
S5、回湿：向烘干后获得的茶叶喷洒喷洒抗衰老添加液，喷洒速度为0.2份/min，直至全部喷洒完为止，随后继续搅拌10～20min，再将其置于常温空气中回湿至含水量为5～6％时，在240～280nm的波长范围内用紫外线照射60min灭菌并对其进行包装，即获得成品红茶。
参照例1：
一种红茶，按质量份计包括以下原料：甘草2份、罗望子胶2份、酒石酸1份、刺梨叶1份、枸橼酸钠2份、桑白皮2份、银杏叶1份、人参叶4份、淡竹叶4份、绞股蓝3份、抗疲劳提取液3份以及抗衰老添加液3份，抗疲劳提取液中仅含五味子和石斛，抗衰老添加液含维生素E和苦瓜提取物。
参照例2：
一种红茶，按质量份计包括以下原料：甘草2.5份、罗望子胶3份、酒石酸2份、刺梨叶2份、枸橼酸钠3份、桑白皮4份、银杏叶2份、人参叶5份、淡竹叶5份、绞股蓝5份、抗疲劳提取液6份以及抗衰老添加液6份，抗疲劳提取液中仅含五味子和石斛，抗衰老添加液含维生素E和苦瓜提取物。
参照例3：
一种红茶，按质量份计包括以下原料：甘草3份、罗望子胶4份、酒石酸3份、刺梨叶3份、枸橼酸钠4份、桑白皮5份、银杏叶3份、人参叶6份、淡竹叶6份、绞股蓝7份、抗疲劳提取液9份以及抗衰老添加液9份，抗疲劳提取液中仅含五味子和石斛，抗衰老添加液含维生素E和苦瓜提取物。
上述参照例1～3中，抗疲劳提取液仅由五味子和石斛进行制备，且均通过与实施例相同的步骤进行制备成品红茶。
取上述实施例1～3、对比例1～3以及参照例1～3中的成品红茶，并取90只小白鼠分九组分别服用由上述红茶所泡制的茶水，并令其进行爬杆(杆长1.5m，记录其爬至杆顶的时间)、游泳(游泳 距离3m，记录其游至终点的时间)及负荷游泳测试(负荷6g铁片，游泳距离3m，记录其游至终点的时间)，记录其各个测试的时间并求其平均值，记录于下表并进行比较：
试验组 爬杆时间/s 游泳时间/s 负荷游泳时间/s
实施例1 45 93 112
对比例1 120 243 267
参照例1 86 122 145
实施例2 47 96 115
对比例2 128 251 273
参照例2 88 119 151
实施例3 44 95 115
对比例3 125 246 271
参照例3 85 123 147
由上表数据可知，实施例中的小白鼠在爬杆、游泳以及负荷游泳的三项测试中，耗时都是最短的，其次耗时较短的是参照例中的小白鼠，而对比例中的小白鼠在三项测试中均耗时最长，由此可见，实施例和参照例中的小白鼠在服用含抗疲劳提取液的茶水后，能够较快地降低其疲劳感，且由此还另外可知，在抗疲劳提取液中加入适量的树莓多糖能够进一步的提高抗疲劳效果。
试验二：对该红茶的抗衰老效果进行实验
对比例4：
一种红茶，按质量份计包括以下原料：甘草2份、罗望子胶2份、 酒石酸1份、刺梨叶1份、枸橼酸钠2份、桑白皮2份、银杏叶1份、人参叶4份、淡竹叶4份、绞股蓝3份、抗疲劳提取液3份，抗疲劳提取液中含五味子、石斛和树莓多糖。
对比例5：
一种红茶，按质量份计包括以下原料：甘草2.5份、罗望子胶3份、酒石酸2份、刺梨叶2份、枸橼酸钠3份、桑白皮4份、银杏叶2份、人参叶5份、淡竹叶5份、绞股蓝5份、抗疲劳提取液6份，抗疲劳提取液中含五味子、石斛和树莓多糖。
对比例6：
一种红茶，按质量份计包括以下原料：甘草3份、罗望子胶4份、酒石酸3份、刺梨叶3份、枸橼酸钠4份、桑白皮5份、银杏叶3份、人参叶6份、淡竹叶6份、绞股蓝7份、抗疲劳提取液9份，抗疲劳提取液中含五味子、石斛和树莓多糖。
上述对比例4～6中，均无添加任何抗衰老添加液，且通过下述步骤进行制备成品红茶，具体过程如下：
S1、萎凋：按配比份取新鲜的甘草、银杏叶、人参叶、淡竹叶、绞股蓝、刺梨叶、桑白皮分别摊放在竹制簸箕上，置于恒温箱中摊凉萎凋至水分含量为35～38％后，摊凉温度控制在32℃；
S2、揉捻：将S1摊凉结束的原料叶进行混合并置于搅拌机中，并倒入酒石酸搅拌均匀，在搅拌时，先采用搅拌速度为300r/min搅拌30min后，随后采用输送带输送至揉捻机中，采用顺时针方向揉捻混合料，揉捻温度控制在55℃，且揉捻时采用的压力为4.0kg/m 3， 揉捻1.6h后，揉捻完成，待用；
S3、发酵：罗望子胶与枸缘酸钠混合，添加其总量4％的清水搅拌成液体，再同杀青完成后的茶叶一起置于发酵机中，摊放成厚度为10～15cm，先用氮气将发酵机内空气排出，再令其在氮气的气氛下进行发酵，发酵时添加茶叶总量4％的浓度为1％的葡萄糖和茶叶总量3％的茶氨酸溶液，发酵温度为50℃，发酵3h后，翻抛2min，继续整理成10～15cm厚，调整发酵温度为65℃，发酵5h后，结束发酵；
S4、烘干：将发酵结束的茶叶置于烘干机中，采用茶叶从左至右移动式烘干，烘干机进口温度为35℃，烘干机出口温度为85℃，烘干机中的温度从左至右呈3℃递增，烘干时，调整茶叶在烘干机中的移动速度，使得从烘干机出口出来的茶叶的水分含量为2～3％即可；
S5、回湿：向烘干后获得的茶叶喷洒喷洒抗疲劳提取液和抗衰老添加液，喷洒速度为0.1份/min，直至全部喷洒完为止，随后继续搅拌15min，再将其置于常温空气中回湿至含水量为5～6％时，在240～280nm的波长范围内用紫外线照射60min灭菌并对其进行包装，即获得成品红茶。
参照例4：
一种红茶，按质量份计包括以下原料：甘草2份、罗望子胶2份、酒石酸1份、刺梨叶1份、枸橼酸钠2份、桑白皮2份、银杏叶1份、人参叶4份、淡竹叶4份、绞股蓝3份、抗疲劳提取液3份以及抗衰老添加液3份，抗疲劳提取液中含五味子、石斛和树莓多糖，抗衰老添加液仅含维生素E。
参照例5：
一种红茶，按质量份计包括以下原料：甘草2.5份、罗望子胶3份、酒石酸2份、刺梨叶2份、枸橼酸钠3份、桑白皮4份、银杏叶2份、人参叶5份、淡竹叶5份、绞股蓝5份、抗疲劳提取液6份以及抗衰老添加液6份，抗疲劳提取液中含五味子、石斛和树莓多糖，抗衰老添加液仅含维生素E。
参照例6：
一种红茶，按质量份计包括以下原料：甘草3份、罗望子胶4份、酒石酸3份、刺梨叶3份、枸橼酸钠4份、桑白皮5份、银杏叶3份、人参叶6份、淡竹叶6份、绞股蓝7份、抗疲劳提取液9份以及抗衰老添加液9份，抗疲劳提取液中含五味子、石斛和树莓多糖，抗衰老添加液仅含维生素E。
上述参照例4～6中，抗疲劳提取液仅由五味子和石斛进行制备，且均通过与实施例相同的步骤进行制备成品红茶。
取上述实施例1～3、对比例4～6以及参照例4～6中的成品红茶，对其氧化抑制率进行试验，用沸腾的开水分别将上述茶叶其泡开，再向茶水中滴加3mL的DPPH甲醇溶液(其质量分数为0.004％)，搅拌均匀，静置30分钟后，于波长517nm处测定吸光值，计算其抑制率并记录于下表中：
Figure PCTCN2022103882-appb-000001
Figure PCTCN2022103882-appb-000002
由上表数据可知，实施例、对比例以及参照例中红茶的抗氧化能力由强到弱依次是实施例＞参照例＞对比例，即对比例中制得的红茶最易被氧化，由此可见，将维生素E制成抗衰老添加液可以起到一定的抗衰老效果，而向其中另外加入苦瓜提取物混合制备，可以进一步提高红茶的抗衰老效果。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。

Claims (9)

  1. 一种红茶，其特征在于，按质量份计包括以下原料：甘草2～3份、罗望子胶2～4份、酒石酸1～3份、刺梨叶1～3份、枸橼酸钠2～4份、桑白皮2～5份、银杏叶1～3份、人参叶4～6份、淡竹叶4～6份、绞股蓝3～7份、抗疲劳提取液3～9份以及抗衰老添加液3～9份；
    其中，抗疲劳提取液由五味子、石斛和树莓多糖为原料混合制备而成，抗衰老添加液由维生素E和苦瓜提取物为原料混合制备而成。
  2. 根据权利要求1所述的一种红茶，其特征在于，所述五味子、石斛和树莓多糖的混合质量比为1:1:2。
  3. 根据权利要求1所述的一种红茶，其特征在于，所述树莓多糖的制备方法为：取干燥树莓，经乙醚脱脂后，用浓度75％～95％v/v乙醇提取，过滤，滤渣加水提取，取水提液浓缩后，加乙醇至含醇量达到75％～85％，冷却、静置，最后取得固形物即为树莓多糖。
  4. 根据权利要求1所述的一种红茶，其特征在于，所述抗疲劳提取液的提取方法为：按量称取五味子、石斛和树莓多糖，并将其烘干粉碎，并分别用95％酒精常温下萃取3～5天，获得3份提取液，将3份提取液混合离心后，于45℃～55℃减压蒸馏，将提取液中的酒精蒸发，然后用蒸馏水定容到质量浓度为1g/mL，即得抗疲劳提取液。
  5. 根据权利要求1所述的一种红茶，其特征在于，所述维生素E和苦瓜提取物的混合质量比为2:1。
  6. 根据权利要求1所述的一种红茶，其特征在于，所述抗衰老 添加液的制备方法为：称取苦瓜提取物，干燥并破碎成粗粉，与维生素E混合，加入6～10倍重量的水，浸泡3～12小时，加热煮沸，并保持0.5～1.5小时，滤出汁液，滤渣加6～10倍重量的水，再次加热煮沸0.5～1.5小时，滤出汁液，合并两次汁液，保持温度在50℃～70℃，将滤液浓缩至初始原料重量的5～7倍，过滤即得抗衰老添加液。
  7. 一种红茶的制备方法，其特征在于，包括以下步骤：
    S1、萎凋：按配比份取新鲜的甘草、银杏叶、人参叶、淡竹叶、绞股蓝、刺梨叶、桑白皮分别摊放在竹制簸箕上，置于恒温箱中摊凉萎凋至水分含量为35～38％后，摊凉温度控制在25℃～35℃；
    S2、揉捻：将S1摊凉结束的原料叶进行混合并置于搅拌机中，并倒入酒石酸搅拌均匀，在搅拌时，先采用搅拌速度为250～350r/min搅拌20～40min后，随后采用输送带输送至揉捻机中，采用顺时针方向揉捻混合料，揉捻1.5～1.9h后，揉捻完成，待用；
    S3、发酵：将罗望子胶与枸缘酸钠混合，添加其总量4％的清水搅拌成液体，再同杀青完成后的茶叶一起置于发酵机中，摊放成厚度为10～15cm，先用氮气将发酵机内空气排出，再令其在氮气的气氛下进行发酵，发酵时添加茶叶总量4％的浓度为1％的葡萄糖和茶叶总量3％的茶氨酸溶液，发酵温度为45℃～65℃，发酵2～3h后，翻抛1～5min，继续整理成10～15cm厚，调整发酵温度为50℃～70℃，发酵4～6h后，结束发酵；
    S4、烘干：将发酵结束的茶叶置于烘干机中，采用茶叶从左至右 移动式烘干，烘干机中的温度从左至右呈2℃～5℃递增，烘干时，调整茶叶在烘干机中的移动速度，使得从烘干机出口出来的茶叶的水分含量为2～3％即可；
    S5、回湿：向烘干后获得的茶叶喷洒喷洒抗疲劳提取液和抗衰老添加液，喷洒速度为0.1～0.3份/min，直至全部喷洒完为止，随后继续搅拌10～20min，再将其置于常温空气中回湿至含水量为5～6％时，在240～280nm的波长范围内用紫外线照射30～60min灭菌并对其进行包装，即获得成品红茶。
  8. 根据权利要求7所述的一种红茶的制备方法，其特征在于，所述S2中揉捻温度控制在45℃～75℃，且揉捻时采用的压力为3.2～4.0kg/m 3。
  9. 根据权利要求7所述的一种红茶的制备方法，其特征在于，所述S4中烘干机进口温度为30℃～40℃，烘干机出口温度为80℃～90℃。
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