Substitute tea capable of removing heat and toxic materials, and preparation method of substitute tea

A technology for clearing away heat and detoxifying and substituting tea, which is applied in the direction of pre-extraction tea treatment, climate change adaptation, etc., can solve the problems of high energy consumption, low drying temperature, and reduced product safety, so as to ensure product safety, increase drying temperature, and improve The effect of drying efficiency

Active Publication Date: 2014-07-16
GUANGZHOU QINGXIANG AGRI PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of sun-drying is that when the weather is bad, the color of the product will turn dark brown after being placed for a long time, and even deteriorate due to microbial contamination; impact, the safety of the product is reduced
The problem of the processing method of hot air drying is that the energy consumption is large, which increases the production cost, and the product is affected by the long-term high-temperature hot air, and the quality of the product is poor.
However, there are limitations in the application of these two drying methods in the dehydration of substitute tea: ①The drying temperature is low (generally 35°C to 45°C), and it is easy to be contaminated by microorganisms during the drying process
②The drying speed is too slow in the middle and late stages, and the drying time is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, preparation 1 of substitute tea (guava tea)

[0030] Mainly use guava leaves, guava fruit, and bitter gourd as raw materials. The selected, cleaned, and sliced ​​raw materials are blanched in hot water at 100°C for 2 minutes to inhibit the enzyme activity in the material and make the product more stable during processing. Keep original color. The scalded material is sprayed with cold water to quickly cool the material to room temperature. Then put the cooled material into the vacuum equipment which can change the degree of vacuum. The initial vacuum degree of the vacuum equipment is controlled at 10KPa, and the time is 1.5 minutes; the mid-term vacuum degree is controlled at 20KPa, and the time is 2.0 minutes; the vacuum degree is controlled at 10KPa, and the time is 1.5 minutes. The pretreated materials are dried in a drying room with a combination of solar energy and dehumidification with a power of 1500W high-temperature heat pump dryer installed per ...

Embodiment 2

[0031] Embodiment 2, preparation 2 of substitute tea (rosellin tea):

[0032] Mainly use roselle and stevia leaves as raw materials, put the selected and cleaned raw materials into the vacuum equipment that can change the vacuum degree. The initial vacuum degree of the vacuum equipment is controlled at 12KPa, and the time is 1.2 minutes; the mid-term vacuum degree is controlled at 23KPa, and the time is 2.5 minutes; the vacuum degree is controlled at 12KPa, and the time is 1.2 minutes. The pretreated materials are dried in a drying room with a combination of solar energy and dehumidification with a power of 1500W high-temperature heat pump dryer installed per 10 square meters of drying room. While the sun is irradiating, the high-temperature heat pump drying system is turned on to control the temperature in the drying room at 55°C and the drying time is 8.0 hours through its dehumidification and replenishment of part of the heat. Drying reduces the moisture content of the pro...

Embodiment 3

[0033] Embodiment 3, preparation 3 of substitute tea (cassia seed chrysanthemum tea):

[0034] Cassia seeds and Jiaogulan are mainly used as raw materials, and the selected and cleaned raw materials are blanched in hot water at 100°C for 1.5 minutes to inhibit the enzyme activity in the materials. The scalded material is sprayed with cold water to quickly cool the material to room temperature. Then put the cooled material into the vacuum equipment which can change the degree of vacuum. The initial vacuum degree of the vacuum equipment is controlled at 13KPa, and the time is 1.1 minutes; the mid-term vacuum degree is controlled at 24KPa, and the time is 2.3 minutes; the later stage vacuum degree is controlled at 13KPa, and the time is 1.2 minutes. The pretreated materials are dried in a drying room with a combination of solar energy and dehumidification with a power of 1500W high-temperature heat pump dryer installed per 10 square meters of drying room. At the same time as th...

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PUM

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Abstract

The invention discloses substitute tea capable of removing heat and toxic materials which contains the following raw materials: dehydrated guava leaves, dried guava fruits, dried bitter gourd, tea leaves, liquorice, dehydrated stigma of corn, dehydrated roselle, pericarpium citri reticulatae, dehydrated stevia rebaudian, dehydrated semen cassia, chrysanthemum, dehydrated gynostemma pentaphylla, dehydrated lotus leaf, pink rose, broadleaf holly leaf and the like, wherein the raw materials are dehydrated and dried till the water content is controlled to be 5%-8%. In addition, the invention further discloses a preparation method of the substitute tea. The preparation method comprises the following steps: selecting fresh tea material, cleaning the fresh tea material, finishing, blanching, cooling, carrying out vacuum dewatering under variable pressures, drying with combination of solar energy and dehumidification, grinding raw materials, mixing and stirring, packing with small filter-bags. The technical solution provided by the invention overcomes the defects in the traditional series substitute tea processing methods, energy consumption and production cost are reduced, influences of weather are avoided, the drying is fast, the product quality is good, and the product meets the national standard related to food hygiene.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a heat-clearing and detoxifying substitute tea and a preparation method thereof. Background technique [0002] The traditional processing method of series substitute tea is to use "sun drying" or "hot air drying" to dehydrate and dry the raw materials. The disadvantage of the sun-dried processing method is that when the weather is bad, the color of the product will turn dark brown after being placed for a long time, and even deteriorate due to microbial contamination; impact, the safety of the product is reduced. The problem of the processing method of hot air drying is that it consumes a lot of energy, which increases the production cost, and the product is affected by long-term high-temperature hot air, and the quality of the product is poor. [0003] At present, the better substitute tea drying methods include heat pump drying and solar drying. These two drying meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/14
CPCY02A40/924
Inventor 杜海珍李远志欧建昌李夏李美莺
Owner GUANGZHOU QINGXIANG AGRI PROD CO LTD
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