CN101233886B - Method for producing wheat embryo nutrition tea - Google Patents

Abstract

The invention relates to a method for producing wheat germ nutrition tea, which pertains to a food processing field. The method adopts the wheat germ as raw material and combines ultrasonic pretreatment and complex protease hydrolysis to produce wheat germ protein polypeptide flour and also combines extrusion and expanding as well as ultrafine grinding to produce wheat germ flour with wheat flavor which can be then added with tea leaves powder to be prepared into the wheat germ nutrition tea. The tea drink produced by the process of the invention has full nutrients good digestion and absorption, good color and taste and can be made into teabags or instant tea.

Description

A kind of production method of wheat embryo nutrition tea

Technical field

The present invention relates to a kind of production method of wheat embryo nutrition tea, belong to food processing technology field.

Background technology

Wheat accounts for the 2%-4% of wheat seed, contains abundant and protein, fat, multivitamin, the mineral matter of high-quality, and some active micro substances, is described as " human natural nutrition treasure-house ", " human life's source " by nutritionists.Containing 30% the protein of having an appointment in the wheat, is wheat and rice 4.9 and 3.2 times.A large amount of protein in the wheat of discovering contain 8 seed amino acids of needed by human, account for 34.74% of its total amino acid content, and especially lysine content is abundant, accounts for 1.85%.The amino acid composition of amino acid whose composition and FAO/WHO promulgation value and soybean, beef, egg is approaching substantially, is a kind of complete protein.China is one of main in the world Wheat Production state, and total output ranks first in the world, and the hiding amount of the wheat that can develop every year is up to 5,000,000 tons.Yet because wheat is rich in materials such as multiple aliphatic acid, enzyme and pigment, so be difficult to preserve, sneaking into flour influences pink colour again, sells as feed so the wheat processing enterprise of China mixes it in wheat bran mostly, causes the waste of food resource.Wheat utilization now mainly rests on extracts on the wheat germ oil, and the wheat germ development and use after the degreasing seldom.Thereby it is very abundant and resource that be not exploited is human health service to make full use of these reserves, and the diet nutritional and the general level of the health that improves China people is all had crucial meaning.

The molecular weight of wheat albumen is distributed in the 35-55kD scope mostly, and soluble protein has only 30%-40%, and for human body, its digestibility and absorbing property are not so good.Not only can reduce the relative molecular mass of albumen by the method for biological enzymolysis, increase the protein solubility, and can produce a large amount of active peptides and amino acid, not only digestibility, trophism and functional reinforcement greatly, and be rich in multiple physiologically active, suppress isoreactivity as anti-oxidant, ACE.In addition, tea is China people's conventional beverage, and the consumer is numerous, and tea beverage market in 2006 surpasses 30,000,000,000.Along with the transformation of people's dietary structure, consumer's diet idea to excellent flavor, natural, nutrient balance, have the health care direction to develop, the nutrition of conventional tea beverage and local flavor can not satisfy the demand of modern consumer fully.Adopt that amino acid balance is good, nutritious, the composite instant powder of wheat of producing top grade of wheat albumen-polypeptide powder with multiple physiologically active and tealeaves and band make tea and have vast market and prospect.

Summary of the invention

Main purpose of the present invention just provides a kind of production method of wheat embryo nutrition tea, and with wheat, tealeaves is raw material, has invented a kind of production of tea drinks method with good nutrition and health care function.

The present invention passes through the control enzymatic hydrolysis condition, the compound protein enzyme hydrolysis, and the method for ultrasonic pretreatment has solved heavy bitter taste in the proteolysis process, and color is dark, the difficult problem that hydrolysis efficiency is low.

The present invention effectively reduces the salinity of bringing in the product by utilizing the ladder zymolysis technique.

The present invention is by carrying out the method for extrusion to wheat, the process conditions of control extrusion have been invented the production method that a kind of new wheat fragrant breeze is distinguished the flavor of.

Advantage of the present invention: product is nutritious, unique flavor, safety and sanitation.

Technical scheme of the present invention: a kind of production method of wheat embryo nutrition tea, by wheat polypeptide powder preparation technique, wheat wheat face powder preparation technology, tea powder preparation technique and wheat polypeptide powder, wheat wheat face powder, tea powder complex process are formed; With the wheat is raw material, adopt ultrasonic pretreatment and compound protein enzyme hydrolysis to combine and produce wheat polypeptide powder, adopt extrusion and ultramicro grinding to combine and produce the wheat wheat face powder that has wheat fragrance, composite again tea leaf powder makes the wheat embryo nutrition tea;

A) wheat polypeptide powder preparation technique: the defatted wheat embryo is pulverized, added water and stir, ultrasonic pretreatment, the compound protein enzyme hydrolysis, centrifugal, vacuum concentrates and spray-drying;

Pulverize: with the defatted wheat embryo is raw material, with raw material pulverizing to the 70-90 order;

Adding water stirs: the mass ratio that adds water to wheat-germ meal and water is 1: 8～1: 9, stirs fast 10 minutes;

Ultrasonic pretreatment: the condition of processing is: frequency 20-26kHz, and power 900w, intermittent time 4s～6s, ultrasonic time 4s～6s, omnidistance time 9min～11min keeps 50～55 ℃ of temperature;

The compound protein enzyme hydrolysis: pH is transferred to 8.0, and temperature is transferred to 55 ℃, stirs 5min, add the hydrolysis by novo wheat earlier, its condition is: pH7.8～8.1,53～56 ℃ of temperature, alkali protease enzyme concentration 2.0～2.6AU/kg wheat, hydrolysis time 25～30min; Then pH value of solution is transferred to 7.4～7.6, temperature is transferred to 45～48 ℃, adds neutral proteinase 2.0～3.0g/kg wheat, hydrolysis 25～30min, and the control degree of hydrolysis is 8.0%～8.5%;

Spray-drying: the spray-drying condition is: inlet temperature is 190 ℃～195 ℃, 65 ℃～75 ℃ of outlet temperatures, charging rate 3.5kg/h, centrifugal spray rotating speed 30000r/min;

B) wheat wheat face powder preparation technology: the defatted wheat embryo is added water with vapor form, and control is transferred to 12% with moisture; The twin-screw extruder extrusion, condition is: extruder I district control temperature is 60 ℃～65 ℃, 120 ℃～125 ℃ of II district temperature, 145 ℃～150 ℃ of III district temperature, screw speed is 240-250r/min; Extrudate cooling, pulverizing make the wheat face powder; Or 105 ℃ of extrudates baking 2-3 hour, to particle diameter≤45 micron, the sealing cooling makes ultramicro grinding wheat face powder through ultramicro grinding;

C) tea powder preparation technique: fresh tea leaf in its makes tea leaf powder through pulverizing; Or ultramicro grinding makes the ultramicro grinding tea leaf powder to particle diameter≤40 micron;

D) nutrition tea is composite:

Tea in bag: polypeptide powder, wheat face powder, tea leaf powder mix with mass ratio at 2: 2: 1;

Instant tea: polypeptide powder, ultramicro grinding wheat face powder, ultramicro grinding tea leaf powder mix with mass ratio at 2: 2: 1.

Beneficial effect of the present invention: adopt ultrasonic wave processing and protease hydrolytic legal system to be equipped with wheat polypeptide powder, mild condition, simple to operate, the efficient height, product safety, repeatability is strong.Products obtained therefrom contains a large amount of small molecular proteins and polypeptide, and the biologically active height helps digestion and absorption; With extruding and puffing technology and the superfine communication technique processing defatted wheat embryo that combines, a kind of new method of having opened up preparation wheat face powder; Method of double crossing production nutrition tea, easy to operate, both can guarantee tea and wheat fragrance, can guarantee the nutrition of product again.Wheat nutrition tea production technology continuity is good, and constant product quality is suitable for suitability for industrialized production.The product of gained is popular product, and product is nutritious, unique flavor, and safety and sanitation are of high nutritive value, and have plurality of health care functions, and market potential is big.

Specific embodiments

Embodiment 1: the preparation of wheat polypeptide powder

With 6kg high-quality, fresh defatted wheat embryo powder (80 orders, 30% protein content) puts into enzyme reactor, add 48 premium on currency, stirred fast 10 minutes, carry out ultrasonic wave then and handle, the condition of handling is: frequency 25KHz, power 900w, intermittent time 5s, ultrasonic time 5s, omnidistance time 10min keeps 50-55 ℃ of temperature.Temperature is transferred to 55 ℃ then, pH is transferred to 8.0, stir 5min, add 6mL Novi letter alkali protease (Alcalase 2.4L, 2.4AU/1000g wheat), stir hydrolysis 30min at a slow speed with 1.0mol/LNaOH solution; Reduce the temperature to 45 ℃ then, pH is transferred to 7.5, stir 5min, add the outstanding energy of 12g neutral proteinase (the Multifect Neutral of section, the 2g/1000g wheat), stir at a slow speed, hydrolysis 30min, be cooled to room temperature (0-30 ℃) then, centrifugal (link-suspended basket centrifuge 1900r/min) 10min, gained solution for vacuum concentration to 1/3 volume, spray-drying (195 ℃ of EATs, 75 ℃ of outlet temperatures, charging rate 3.5kg/h: centrifugal spray rotating speed: 30000r/min), products obtained therefrom polypeptide content 40%.

Embodiment 2: the wheat face powder

Get 6kg high-quality, fresh defatted wheat embryo, add the water mode with steam material moisture is transferred to 12%, extrusion, the extrusion condition: extruder I district control temperature is 65 ℃, 120 ℃ of II district temperature, 150 ℃ of III district temperature, rate of feeding 12r/min, the screw spiral rotating speed is 240r/min, and cooling is then pulverized.

Embodiment 3: the preparation (green tea) of making tea of wheat nutrient bag

Get 1g wheat polypeptide powder, 1g wheat face powder and 0.5g high-quality, fresh green tea (20 order) evenly mix, and put into 45 * 55mm filter bag.

Embodiment 4: wheat nourishing instant tea preparation (green tea)

Get wheat wheat face powder 100g, 105 ℃ of temperature of control were dried by the fire 2-3 hour, and ultramicro grinding is to particle diameter≤45 micron; Get the green tea of 50g high-quality, ultramicro grinding is to particle diameter≤40 micron.Green tea powder, wheat face powder (ultramicro grinding), wheat polypeptide powder mixed with 1: 2: 2, and every 2g/ is packed to go in the packages sealed bag.

Embodiment 5: wheat nourishing instant tea preparation (black tea)

Get wheat face powder 100g, 105 ℃ of temperature of control were dried by the fire 2-3 hour, and ultramicro grinding is to particle diameter≤45 micron; Get the black tea of 50g high-quality, ultramicro grinding is to particle diameter≤40 micron.Black tea powder, ultramicro grinding wheat face powder, wheat polypeptide powder mixed with 1: 2: 2, and every 2g/ is packed to go in the packages sealed bag.

Claims (1)

1. the production method of a wheat embryo nutrition tea is characterized in that by wheat polypeptide powder preparation technique, wheat wheat face powder preparation technology, and the complex process of tea powder preparation technique and nutrition tea is formed;

A) wheat polypeptide powder preparation technique: the defatted wheat embryo is pulverized, added water and stir, ultrasonic pretreatment, the compound protein enzyme hydrolysis, centrifugal, vacuum concentrates and spray-drying;

Pulverize: with the defatted wheat embryo is raw material, with raw material pulverizing to the 70-90 order;

Adding water stirs: the mass ratio that adds water to wheat-germ meal and water is 1: 8～1: 9, stirs fast 10 minutes;

Ultrasonic pretreatment: the condition of processing is: frequency 20-26kHz, and power 900w, intermittent time 4s～6s, ultrasonic time 4s～6s, omnidistance time 9min～11min keeps 50～55 ℃ of temperature;

The compound protein enzyme hydrolysis: pH is transferred to 8.0, and temperature is transferred to 55 ℃, stirs 5min, add the hydrolysis by novo wheat earlier, its condition is: pH 7.8～8.1,53～56 ℃ of temperature, alkali protease enzyme concentration 2.0～2.6AU/kg wheat, hydrolysis time 25～30min; Then pH value of solution is transferred to 7.4～7.6, temperature is transferred to 45～48 ℃, adds neutral proteinase 2.0～3.0g/kg wheat, hydrolysis 25～30min, and the control degree of hydrolysis is 8.0%～8.5%;

Spray-drying: the spray-drying condition is: inlet temperature is 190 ℃～195 ℃, 65 ℃～75 ℃ of outlet temperatures, charging rate 3.5kg/h, centrifugal spray rotating speed 30000r/min;

B) wheat wheat face powder preparation technology: the defatted wheat embryo is added water with vapor form, and control is transferred to 12% with moisture; The twin-screw extruder extrusion, condition is: extruder I district control temperature is 60 ℃～65 ℃, 120 ℃～125 ℃ of II district temperature, 145 ℃～150 ℃ of III district temperature, screw speed is 240-250r/min; Extrudate cooling, pulverizing make the wheat face powder; Or 105 ℃ of extrudates baking 2-3 hour, to particle diameter≤45 micron, the sealing cooling makes ultramicro grinding wheat face powder through ultramicro grinding;

C) tea powder preparation technique: fresh tea leaf in its makes tea leaf powder through pulverizing; Or ultramicro grinding makes the ultramicro grinding tea leaf powder to particle diameter≤40 micron;

D) nutrition tea is composite:

Tea in bag: polypeptide powder, wheat face powder, tea leaf powder mix with mass ratio at 2: 2: 1;

Instant tea: polypeptide powder, ultramicro grinding wheat face powder, ultramicro grinding tea leaf powder mix with mass ratio at 2: 2: 1.