CN101755941A - Method for preparing tea drinks - Google Patents

Abstract

The invention relates to a method for preparing tea drinks, which belongs to the technical field of foods. When used for producing tea drinks, the method overcomes the defects that the traditional methods for preparing tea drinks destroy original flavor of tea leaves, hve great impurities, high energy consumption, environment pollution, high equipment cost and the like. The method comprises the following steps of: crushing a raw material into coarse powder; mixing the powder and water; extracting the mixture of the power and water by using high-voltage pulse electric field at normal temperature; centrifuging the extracting solution to remove residues; using a membrane separation device for fine filtring extracting solution having the molecular weight cut off less than 50,000; and adding auxiliary materials into the extracting solution, or concentrating the fine filtrate with the reverse osmosis method, using the spray drying method to prepare dry power, and adding the auxiliary materials into the dry powder. The invention has the advantages that the extraction process is performed in low temperature condition, so that the original flavor of the tea drinks is completely maintained, and the taste of the tea drinks is improved; the invention also has the advantages of high transfer rate, low production cost and safe operation. Most of the impurities are removed, no deposition occurs during long time placement, and the quality of the tea drinks is guaranteed.

Description

A kind of method for preparing tea beverage

Technical field

The invention belongs to food technology field, be specifically related to a kind of method for preparing tea beverage,

Background technology

Tea beverage is since coming out the 1980s, and, health care natural with it, convenient, good to eat advantage are a dark horse in beverage industries, are liked for people deeply and widely acceptance.Through the development of two more than ten years, it is varied that the kind of tea beverage also becomes, except traditional be the tea beverage of primary raw material with tealeaves, the herbal tea beverage of flavour and health care has also appearred having.Tea beverage is just being dominated the development of beverage industry with its special local flavor and health care at present.

Tea beverage extracting method commonly used at present has heating extraction, ultrasonic extraction, super-pressure extraction, Microwave Extraction, all there is weak point in these extracting methods commonly used, it is traditional extracting method that heating is extracted, the temperature height, time is long, heavy damage original local flavor of tealeaves, impurity is many in the extract, the energy consumption height; It is low that ultrasonic extraction is extracted temperature than heating, but produce a large amount of ultrasonic waves in operating process, major injury operator's the sense of hearing, also severe contamination environment; Super-pressure is extracted as normal temperature and extracts, and the rate of transform is higher, but equipment performance is required height, the equipment cost height, and whole leaching process carries out under high pressure, exists serious potential safety hazard; Microwave Extraction is to utilize heating using microwave to extract, come down to heating and extract, the temperature height, the time is long, heavy damage original local flavor of tealeaves.

Along with the progressively raising of people's living standard and health care consciousness, the demand of tea beverage constantly increases, and people are also more and more higher to the requirement of tea beverage.How satisfying the mouthfeel requirement that people improve day by day, reduce the production cost of tea beverage, further improve the demand of tea beverage, revitalize national beverage industries, is the technical barrier of being badly in need of solution at present.

Summary of the invention

The purpose of this invention is to provide a kind of method for preparing tea beverage, be used for the production of tea beverage, overcome original local flavor of the destruction tealeaves that exists in the existing production of tea drinks method, impurity is many, the energy consumption height; Or damage operator's the sense of hearing, contaminated environment; Or high to the equipment performance requirement, the equipment cost height exists serious deficiencies such as potential safety hazard

Method of the present invention may further comprise the steps:

(1) will prepare raw materials used 30～60 purpose meal that are ground into of tea beverage;

(2) get the meal that step (1) obtains, add the water of 8～15 times of weight;

(3) meal that step (2) is obtained and the mixture of water are used field intensity 5000～18000V at normal temperatures, and the high-voltage pulse electric field that pulse number is 2000～10000 extracts processing, 1～10 millisecond of processing time;

(4) will be through the meal of step (3) processing and the centrifugal slagging-off of mixture of water;

(5) liquid that step (4) is obtained is filtered the extract of molecular cut off below 50,000 with membrane separation device is smart;

(6) add auxiliary material in the smart filtrate that step (5) obtains, stir, filter, sterilization pours in the bottle, makes tea beverage; Or the smart filtrate that step (5) is obtained is concentrated with the method for counter-infiltration, makes dry powder with spray drying process again, adds auxiliary material again in dry powder, makes instant tea, promptly gets the present invention.

Good effect of the present invention is: leaching process carries out under the low temperature environment below 30 ℃, and the complete original local flavor that has kept tea beverage has improved the mouthfeel of tea beverage greatly, has satisfied the mouthfeel requirement of people to tea beverage; Extract with the high voltage pulse method, the efficient height, energy consumption is low, rate of transform height, its energy consumption only is 1/10th of a traditional extraction process, and the rate of transform reaches more than 99 percent, can save a large amount of tea beverage raw materials, the application of high voltage pulse extractive technique greatly reduces the production cost of tea beverage, makes tea beverage have bigger competitive advantage at beverage industries; The high voltage pulse extractive technique, handling safety, environmental protection has the at present existing incomparable superiority of extractive technique.

Adopt membrane separation technique that the tea beverage extract is carried out separation and purification, removed most impurity, solved tea beverage and put the technical barrier of easy generation precipitation for a long time, guaranteed the quality of tea beverage.

To the tea beverage extract behind the purifying, the present invention adopts reverse osmosis concentration technology low temperature to concentrate, and adopts spray drying technology to carry out drying to the soup after concentrating, and whole process has been avoided for a long time operation at high temperature, has intactly kept original local flavor of tea beverage.

The specific embodiment

Embodiment 1:

Prepare hypotensive tea (is raw material jointly with green tea, chrysanthemum, cassia seed):

(1) gets chrysanthemum 40kg, cassia seed 30kg, green tea 30kg, aforementioned base materials is ground into 30 purpose meal;

(2) the raw material meal that step (1) is obtained adds water 800kg;

(3) the mixture field intensity 8000V of the powder that step (2) is obtained, water, the high-voltage pulse electric field that pulse number is 3000 extracts processing, 30 ℃ of treatment temperatures, 2 milliseconds of processing times;

(4) will be through the powder of step (3) processing, the centrifugal slagging-off of mixture of water;

(5) liquid that step (4) is obtained is filtered the extract of molecular cut off below 50,000 with membrane separation device is smart;

(6) add sucrose 400kg, vitamin C 4kg in the smart filtrate that step (5) obtains, stir, filter, sterilization pours in the bottle, makes tea beverage.

In the present embodiment, chrysanthemum, cassia seed have and clear liver and improve vision, hypotensive effect is the blood pressure-reducing food that people use always, mixes with green tea with it, the blood-pressure decreasing tea of preparation, give off a strong fragrance, mouthfeel is pure, puts for a long time not produce precipitation, tangible step-down effect is arranged, and preparation cost has reduced by 1/3rd than previous methods.

Embodiment 2:

Preparation slim tea (oolong tea, cassia seed, lotus leaf, hawthorn are raw material jointly):

(1) takes by weighing oolong tea 30kg, cassia seed 20kg, lotus leaf 20kg, hawthorn 80kg, aforementioned base materials is ground into 50 purpose meal;

(2) will add water 1500kg through the raw material of step (1) processing;

(3) step (2) is obtained solid, liquid mixture field strength 12000V, the high-voltage pulse electric field that pulse number is 8000 extracts processing, 28 ℃ of treatment temperatures, 8 milliseconds of processing times;

(4) will be through the centrifugal slagging-off of solid, liquid mixture of step (3) processing;

(5) liquid that step (4) is obtained is filtered the extract of molecular cut off below 50,000 with membrane separation device is smart;

(6) the smart filtrate that step (5) is obtained concentrates, gets dry powder with spray-drying again with reverse osmosis;

(7) in the dry powder that step (6) obtains, add sucrose 400kg, vitamin C 2kg, stir, promptly make instant tea of the present invention.

In the present embodiment, cassia seed, lotus leaf, hawthorn have the effect of reducing blood lipid, fat-reducing, are the fat-weight-reducing foods that people use always, be used for being mixed with instant defatting tea with oolong tea, and pure taste, dissolubility is good, and fat-reducing effect is definite, and preparation cost is low.

Claims (1)

1. method for preparing tea beverage is characterized in that may further comprise the steps:

(1) will prepare raw materials used 30～60 purpose meal that are ground into of tea beverage;

(2) get the meal that step (1) obtains, add the water of 8～15 times of weight;

(3) meal that step (2) is obtained and the mixture of water are at room temperature used field intensity 5000～18000V, and the high-voltage pulse electric field that pulse number is 2000～10000 extracts processing, 1～10 millisecond of processing time;

(4) will be through the meal of step (3) processing and the centrifugal slagging-off of mixture of water;

(5) liquid that step (4) is obtained is filtered the extract of molecular cut off below 50,000 with membrane separation device is smart;

(6) add auxiliary material in the smart filtrate that step (5) obtains, stir, filter, sterilization pours in the bottle, makes tea beverage; Or the smart filtrate that step (5) is obtained is concentrated with the method for counter-infiltration, makes dry powder with spray drying process again, adds auxiliary material again in dry powder, makes instant tea, promptly gets the present invention.