CN103689088B - Milk tea powder and preparation method thereof - Google Patents

Abstract

The invention discloses milk tea powder, and provides a preparation method thereof, wherein the milk tea powder is obtained by taking fresh milk as a main raw material and processing through the steps of milk purification, pretreatment, cold preservation, blending, sterilization, concentration, spray drying, fluidized bed cooling and packaging. The milk tea powder has the beneficial effects that the traditional operation technology that milk powder and tea powder are simply and dryly blended is changed, an operation method of firstly blending and then powder spraying is used, the uniformity of product is ensured, stable product quality is ensured, and homogenizing after blending is added in the operation steps, so that water-free cream and tea powder are better thinned, wherein vitamins, mineral substances and concentrated whey protein are further added, so that the product nutrition is more comprehensive and balanced; meanwhile, the operation step of later dry blending is reduced, the investment is reduced, the manpower investment is reduced, the pollution of the product is reduced, and the quality safety of the product is ensured.

Description

A kind of milk tea powder and preparation method thereof

Technical field

The present invention relates to food processing field, be specifically related to a kind of milk tea powder and preparation method thereof.

Background technology

Milk powder is with fresh milk or goat milk for raw material, and by method that is freezing or heating, the most moisture in removing Ruzhong, adds the food that appropriate vitamin, mineral matter etc. processes after dry.Traditional milk tea powder, carries out dry mixed by milk powder and tea powder just merely, and taste is single, production marketing market dullness.

Summary of the invention

Object of the present invention is exactly for above-mentioned defect of the prior art, provides that a kind of taste enriches, milk taste and the strong milk tea powder of tea flavour.

To achieve these goals, technical scheme provided by the invention is: a kind of milk tea powder, is take fresh cow milk as primary raw material, processes obtain through clean breast, pretreatment, refrigeration, batching, sterilizing, concentrated, spraying dry, fluid bed cooling and packaging step.

Further, above-mentioned a kind of milk tea powder, described batching includes green brick tea, black tea, maltodextrin, anhydrous butter oil, edible salt, WPC, vitamin, mineral matter, calcium carbonate, skim milk and fat flower bud.

Further, above-mentioned a kind of milk tea powder, in the milk tea powder of described garden, include the following component according to parts by weight: raw material fresh cow milk 6000 parts, green brick tea 20 parts, black tea 10 parts, maltodextrin 50 parts, anhydrous butter oil 50 parts, edible salt 45 parts, WPC 40 parts, vitamin 2 parts, 1 part, mineral matter, 7.5 parts, calcium carbonate, skim milk 50 parts, fat flower bud 0.1 part.

Second object of the present invention there is provided the preparation method of said milk tea powder, includes following steps:

1) pre-treatment: raw milk purified, purifies and is less than 2PPM to impurity degree, be purified rear raw milk; Squeeze into after raw milk after purification is cooled to 4-6 DEG C hold-up tank should and stir storage after 30 minutes, period of storage is less than 4 hours, and acidity is less than 16 ° of T; Raw milk after storage is carried out homogeneous and sterilization, and homogenizing temperature is 55 DEG C-70 DEG C, and sterilization temperature is 80 DEG C-85 DEG C, and sterilizing time is 15s; Raw milk after sterilization is cooled to 4-8 DEG C, and period of storage is less than 12 hours, and acidity is less than 16 ° of T, obtains raw milk after pre-treatment;

2) prepare burden: take each batching by proportioning according to claim 3, first add 60 DEG C-70 DEG C water 800kg in change powder shear cylinder, then be sequentially added into maltodextrin, edible salt, mineral matter and calcium carbonate and be uniformly dissolved; First add the fresh milk 800kg of 50 DEG C-60 DEG C in change tea shear cylinder, then be sequentially added into WPC, anhydrous butter oil, green brick tea, black tea and vitamin and be uniformly dissolved; Then be heated to 60 DEG C-65 DEG C after being mixed with pasteurize milk by the material changed in powder shear cylinder and carry out second homogenate, the first class pressure of homogeneous is 3-5MPa, and secondary pressure is 18-20 MPa, is cooled to less than 10 DEG C after homogeneous, obtaining powder material; The heating material to 60 changed in tea shear cylinder DEG C-65 DEG C is carried out second homogenate, and the first class pressure of homogeneous is 3-5MPa, and secondary pressure is 18-20 MPa, is cooled to less than 10 DEG C after homogeneous, obtaining tea material; To powder material be changed and change tea mixing of materials and stir the milk tea powder semi-finished product that 30min obtains having prepared burden;

3) sterilization: by step 2) milk tea powder semi-finished product that the batching that obtains is good carry out sterilization, and sterilization temperature is 105 DEG C-110 DEG C, and kiling the time is 4 seconds, obtains semi-finished product after sterilization;

4) concentrated: after sterilization step 3) obtained, semi-finished product carry out evaporation and concentration, evaporating pressure is for being less than 4.0 MPa, and ultimate density requires as 16-18 ° of Be ', obtains concentrated rear semi-finished product;

5) spraying dry: concentrated rear semi-finished product step 4) obtained carry out spraying dry, and spray drying condition is: EAT 150 DEG C-180 DEG C, temperature of outgoing air 82 DEG C-90 DEG C, high-pressure pump pressure 10-20MPa, drying tower negative pressure 70-200Pa; Obtain garden milk tea powder finished product.

Beneficial effect of the present invention is: a kind of milk tea powder provided by the invention, change the simple dry-blending operations technique of traditional milk powder and tea powder, use and first mix, the method of operating of dusting again, ensure the homogeneous of product, ensure constant product quality, in operating procedure, add the rear homogeneous of batching, make anhydrous butter oil and the refinement more of tea powder, wherein, also be added with vitamin, mineral matter, WPC, make product nutrition more comprehensively, balance, simultaneously, decrease the operating procedure that the later stage is dry mixed, reduce investment, reduce human input, reduce the pollution of product, ensure that the quality safety of product.

Detailed description of the invention

embodiment 1:

One, milk tea powder is filled a prescription:

Various raw material and use amount as shown in table 1 below.

。

two, milk tea powder production technology:

1, pre-treatment:

1) only newborn: the impurity degree of the raw milk of purification requires at below 2PPM (sample point 1);

2) lower the temperature: raw milk is cooled to (4 ~ 6) DEG C;

3) temporary: sweet milk squeezes into hold-up tank should stir 30 minutes in time;

Period of storage should be less than 4 hours, and when breast in particular cases stores, acidity can not more than 16 ° of T(sample points 2), within 30 minutes, open agitator before processing;

4) sterilization: have the material that should make of pre-thermally homogenising to reach 55 DEG C ~ 70 DEG C homogeneous by temperature after heat-exchangers of the plate type in technological design, sterilisating section temperature should control between 80 DEG C ~ 85 DEG C, and the time is 15s;

5) store: after fresh milk sterilization, temperature is down to 4-8 DEG C, and period of storage should be less than 12 hours, when breast in particular cases stores, acidity can not more than 16 ° of T, and thermally-stabilised alcohol detection normal (sample point 3), opens agitator in first 30 minutes in batching.

2, prepare burden:

1) empirically fill a prescription and accurately take each material, and fill in batching record;

2) change powder: add 60-70 DEG C of water 800kg (counting powder shear cylinder) in a shear cylinder, be sequentially added into maltodextrin, edible salt, mineral matter, calcium carbonate, in change powder shear cylinder, is uniformly dissolved;

3) tea is changed: add the fresh milk 800kg of 50-60 DEG C (counting tea shear cylinder) in another shear cylinder, be sequentially added in WPC, anhydrous butter oil, green brick tea, black tea, being wrapped in of vitamin batch mixing tea shear cylinder, be uniformly dissolved;

4) first change powder shear cylinder material is got back to 10T cylinder to mix with the pasteurize milk measured, change after heating 60-65 DEG C through plate, carry out homogeneous, first class pressure 3-5MPa, secondary pressure 18-20 MPa, crosses cold type and cools to less than 10 DEG C, gets back to 50T and stores up milk storehouse;

5) again change tea shear cylinder material is got back to 10T cylinder, change after heating 60-65 DEG C through plate, carry out all changing after heating 60-65 DEG C through plate, carry out homogeneous, first class pressure 3-5MPa, secondary pressure 18-20 MPa, crosses cold type and cools to less than 10 DEG C, get back to 50T matter, first class pressure 3-5MPa, secondary pressure 18-20 MPa, crosses cold type and cools to less than 10 DEG C, get back to 50T milk storehouse;

6) joined the stirring later of 2T material and just to concentrated feed, can require that in production, agitator does not stop when not arriving low liquid level after 30 minutes;

7) indicate constant volume by liquid level, make ingredients concentration at 17%(sample point 4).

3, sterilization:

Sterilization temperature 105-110 DEG C, sterilizing time 4 seconds.

4, concentrated:

Evaporation: pressure is not higher than 4.0MPa;

Dense milk: concentration requirement 16-18 ° Be ' (sample point 5).

5, spray drying process:

1) require spray-dired each pipeline before work, container keeps clean, and steam (or more than 90 DEG C hot water) sterilization 30 minutes;

2) spraying front opening steam valve, starts air inlet fan, send hot blast, and tower (80 ~ 85) DEG C is dried in preheating, and preheating (2 ~ 3) is secondary;

3) start exhaust blower and air inlet fan, start high-pressure pump (pump pressure can not lower than 5Mpa) when temperature of outgoing air reaches 85 DEG C and spray;

4) EAT controls between (150 ~ 180) DEG C;

5) temperature of outgoing air controls between (82 ~ 90) DEG C;

6) high-pressure pump Stress control is at (10 ~ 20) MPa;

7) drying tower negative pressure should control at (70 ~ 200) Pa;

8) spraying was at interval of 8 hours cleaning primary atomization devices;

9) spraying dry per tour work cleans each pipeline and container for 8 hours once;

10) powder mouth sampling (sample point 6) is connect.

6, each sample point of procedure inspection requires:

Specific requirement is as shown in table 2.

。

Note: reconstitute and require that 55 DEG C of water reconstitute stirring left 40 times, right 40 times, 15 times, front and back, without agglomerate, places 3 minutes without precipitation.

three, garden milk tea powder technical indicator:

1, organoleptic indicator:

Organoleptic indicator is as shown in table 3.

。

2, physical and chemical index:

Physical and chemical index is as shown in table 4.

。

3, food enrichment index:

Food enrichment index is as shown in table 5.

。

4, microorganism limitation:

Microorganism limitation is as shown in table 6.

。

Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. a milk tea powder, is characterized in that, is take fresh cow milk as primary raw material, processes obtain through clean breast, pretreatment, refrigeration, batching, sterilizing, concentrated, spraying dry, fluid bed cooling and packaging step; Described batching includes green brick tea, black tea, maltodextrin, anhydrous butter oil, edible salt, WPC, vitamin, mineral matter, calcium carbonate, skim milk and fat flower bud; In described milk tea powder, include the following component according to parts by weight: raw material fresh cow milk 6000 parts, green brick tea 20 parts, black tea 10 parts, maltodextrin 50 parts, anhydrous butter oil 50 parts, edible salt 45 parts, WPC 40 parts, vitamin 2 parts, 1 part, mineral matter, 7.5 parts, calcium carbonate, skim milk 50 parts, fat flower bud 0.1 part.

2. a preparation method for milk tea powder as claimed in claim 1, is characterized in that, includes following steps:

1) pre-treatment: raw milk purified, purifies and is less than 2PPM to impurity degree, be purified rear raw milk; Squeeze into hold-up tank after raw milk after purification is cooled to 4-6 DEG C and stir storage after 30 minutes, period of storage is less than 4 hours, and acidity is less than 16 ° of T; Raw milk after storage is carried out homogeneous and sterilization, and homogenizing temperature is 55 DEG C-70 DEG C, and sterilization temperature is 80 DEG C-85 DEG C, and sterilizing time is 15s; Raw milk after sterilization is cooled to 4-8 DEG C, and period of storage is less than 12 hours, and acidity is less than 16 ° of T, obtains raw milk after pre-treatment;

2) prepare burden: take each batching according to following proportioning, raw material fresh cow milk 6000kg, green brick tea 20kg, black tea 10kg, maltodextrin 50kg, anhydrous butter oil 50kg, edible salt 45kg, WPC 40kg, vitamin 2kg, mineral matter 1kg, calcium carbonate 7.5kg, skim milk 50kg, fat flower bud 0.1kg, first add 60 DEG C-70 DEG C water 800kg in change powder shear cylinder, then be sequentially added into maltodextrin, edible salt, mineral matter and calcium carbonate and be uniformly dissolved; First add the fresh milk 800kg of 50 DEG C-60 DEG C in change tea shear cylinder, then be sequentially added into WPC, anhydrous butter oil, green brick tea, black tea and vitamin and be uniformly dissolved; Then be heated to 60 DEG C-65 DEG C after being mixed with pasteurize milk by the material changed in powder shear cylinder and carry out second homogenate, the first class pressure of homogeneous is 3-5MPa, and secondary pressure is 18-20 MPa, is cooled to less than 10 DEG C after homogeneous, obtaining powder material; The heating material to 60 changed in tea shear cylinder DEG C-65 DEG C is carried out second homogenate, and the first class pressure of homogeneous is 3-5MPa, and secondary pressure is 18-20 MPa, is cooled to less than 10 DEG C after homogeneous, obtaining tea material; To powder material be changed and change tea mixing of materials and stir the milk tea powder semi-finished product that 30min obtains having prepared burden;

3) sterilization: by step 2) milk tea powder semi-finished product that the batching that obtains is good carry out sterilization, and sterilization temperature is 105 DEG C-110 DEG C, and kiling the time is 4 seconds, obtains semi-finished product after sterilization;

4) concentrated: after sterilization step 3) obtained, semi-finished product carry out evaporation and concentration, evaporating pressure is for being less than 4.0 MPa, and ultimate density requires as 16-18 ° of Be ', obtains concentrated rear semi-finished product;

5) spraying dry: concentrated rear semi-finished product step 4) obtained carry out spraying dry, and spray drying condition is: EAT 150 DEG C-180 DEG C, temperature of outgoing air 82 DEG C-90 DEG C, high-pressure pump pressure 10-20MPa, drying tower negative pressure 70-200Pa; Obtain garden milk tea powder finished product.