CN1091900A - A kind of microcapsule tea and preparation method thereof - Google Patents

Abstract

The present invention uses microcapsules technology processing tea product, with tea-leaf power or extract as core material, be dispersed in in water-soluble resin, the aqueous solution of protein matter as the capsule material, can add flocculant and size improve coating quality, the microcapsule tea of making fully keeps and has strengthened the nutritional labeling and the flavor characteristic of tea, improved the utilization rate of tea, product properties is stable, and is easy to use, store and reprocessing, enlarged the application of tea in the Food ﹠ Drink industry.

Description

A kind of microcapsule tea and preparation method thereof

The invention belongs to tea product processing and microcapsules technology field.

Traditional habit be tealeaves is directly steeped the tea in boiling water or tealeaves pulverized after make tea in bag and drink, tea product and occupation mode thereof are simple, nutritional labeling can not be fully used, and because the easy oxidation of tea, taint of odour have limited its application mode and scope.Closely just like Chinese patent 91105176.7 disclosed tea product processing technologys, with tea under high-temperature pressurizing through steps such as lixiviate, filtration, centrifugation, oven dry, make instant tea paste, because of process through hot conditions, part active ingredient is damaged, and flavor loss is bigger, and process conditions are numerous and diverse, the processing cost height, the utilization rate of tea is low; Just like the disclosed production of instant tea technology of Chinese patent 90109885.X, the active ingredient in the tea is pressed boiling point, thermal sensitivity with certain technology extraction separation in addition, compounding becomes the tea finished product again again, and the tea product productive rate is lower, and production cost is higher.Aforesaid way all makes the edibility fiber in the tealeaves, the protein that is insoluble in water, amino acid and trace element abandon with tea grounds, does not have fine utilization.

Do not see so far to have and tealeaves is utilized fully or use, the report of microcapsules technology processing tea product.

The objective of the invention is to propose a kind of nutritional labeling and flavor characteristic, stable performance that can fully keep tea, be convenient to the microcapsule tea and the preparation technology thereof that process, use and store.

This microcapsule tea, be with tea-leaf power or tealeaves extract as core material, under room temperature and PH6.5-10 condition, be dispersed in the capsule material aqueous solution of 8-50% concentration expressed in percentage by weight and form; Described capsule material is water-soluble resin and/or protein.

General available water-soluble resin has gelatin, gum arabic, carboxymethyl cellulose, peach gum, starch, methylcellulose, arabinose-half poly lactose, polyvinyl alcohol, polyacrylic acid, sodium alginate, maltodextrin, they one of them, or multiple combination; General available protein matter has casein-sodium, egg white, casein, collagen, soybean protein, they one of them, or multiple combination.

The flocculant of 0.2-2% weight can be in the capsule material aqueous solution, added, for example, tannin, tannic acid or theophylline can be selected for use; Consumption can cause the pained and increase cost of tea product mouthfeel too much, and consumption can influence covered effect very little.

The multivalence alcohol that can add 2-4% weight in the capsule material aqueous solution to increase wellability, is uniformly dispersed the tea powder as size in the aqueous solution.General size can be selected glycerine, propane diols, maltitol, xylitol for use, one of them or multiple combination; Consumption can influence the mouthfeel of tea product too much, produces peculiar smell, has increased sugariness, and increased cost; Consumption does not then reach the purpose of abundant dispersion very little.

Because the present invention adopts water-soluble resin and/or the protein matter capsule material as microcapsules, with tea-leaf power or extract as core material embedding get up, tea powder and external environment are isolated, thereby the color and the whole nutrition that keep raw material tea, can make tea product in storage, reduce bad change, improved the quality of tea product, prolonged storage life, the shelf life of tea product, be convenient to store.Because the capsule material that coats adopts protide and/or gelatin class material, so strengthened the trophism of tealeaves, can replenish the necessary amino acid of human body.

Because tea product of the present invention; its tea-leaf power is protected by coating; make tea set that the ability of the extraneous bad condition of certain opposing be arranged; raw material when being convenient to as beverage or food processing; and when allotment food uses; reduce the bad change and the loss of nutriment (as vitamin C etc.) in the tealeaves, enlarged the scope of application and the purposes of tealeaves.Because the present invention adopts the mode of tealeaves all being gone into goods, improved the utilization rate of tealeaves, generally can reach more than 98%, tea product output improves more than 80% than extraction; The consumption of energy is also fallen at the end significantly in its production process.When producing, generally need with hot water active ingredient lixiviate in the tealeaves be come out earlier because of extraction, and then concentrated, dry by physical means, this is a very process of power consumption, and the present invention only needs tealeaves pulverizing, embedding, event energy consumption much less.

Because of the present invention is that tealeaves is all gone into goods,, can be absorbed by the human body utilization or healthy and helpful to human body so the edibility fiber in the tealeaves, be insoluble in each proteinoid, amino acid and the trace element of water; And extraction is when producing tea product, and these utilities all abandon with tea grounds.

Tea product of the present invention can be applicable in the drink and food processing industry as raw material, or drying produces Powdered instant tea, or directly as concentrated type tea-drinking product, has opened up, enlarged the application of tea product.

Embodiment 1:

1. get new listing tealeaves 1kg, use the high speed Universalpulverizer, with 10000 rev/mins of pulverizing 1 minute, with 220 order sub-sieve sieving for standby.

2. get 2000ml distilled water, add 48ml glycerine, mixing.Add the above-mentioned tea dust that has prepared, add tannic acid 5.3g again,, make it be outstanding molten state with 800 rev/mins of stirrings 5 minutes.

3. get gelatin 0.5kg, Arabic gum 0.2kg is dissolved in the 1000ml distilled water.

4. the liquid that step 2, step 3 is prepared mixes, and stirs 5 minutes with 50 rev/mins of rotating speeds.Promptly make the concentrated tea product of green thickness, outstanding molten shape, contain solid content 0.5g/ml approximately.

These goods can be directly used in Instant Drinks as the tea-drinking product, also can be used as the raw material in the food processing, are used to make tea flavour biscuit, tea flavour cake etc.

Embodiment 2:

1. get old tea 1kg, be crushed to below the granularity 1mm standby through airflow milling.

2. get the 2000ml deionized water, under the room temperature, add maltitol 80g, soybean protein 200g, carboxymethyl cellulose 100g is stirred to evenly with 100 rev/mins of mixing speeds.

3. adding includes the mixture of 5g tannin, 20g tannic acid and 10g theophylline in step 2 liquid, and adds tea dust prepared in the step 1 immediately, stirs 5 minutes with 1000 rev/mins of speed, promptly makes the virellous suspension that is creamy white.This product can be used as the raw material in the tea flavour food, be used for making smoke, fried, baking class tea flavour cake and tea flavour ice cream.

Embodiment 3:

1. get ferment, black tea 1kg that kneading is good ,-40 ℃ freezing 1 hour down, pulverize with the air-flow pulverising mill immediately after the taking-up, and add 1kg distilled water and make suspension.

2. use 9kg distilled water, add 100ml glycerine, 80ml maltitol, 300g gelatin, 20g casein, 10g collagen, 100g gum arabic, 200g starch, 10g polyvinyl alcohol, 80g sodium alginate successively, stirring 1 minute with 800 rev/mins rotating speeds, is that to be adjusted to pH value be 7 for the HCl of 5N or NaOH with concentration.

3. step 1 is mixed with two kinds of liquid of step 2, stir 2 minutes with 50 rev/mins rotating speeds after, add tannic acid 18g, continue to stir 3 minutes, make the stable purplish suspension of peony that is.

4. above-mentioned suspension is spray-dried, can make the instant powder capsule black tea of enriched nutritive.It is irregular spherical that this product is, and is the royal purple pressed powder.Every 1kg black tea can make 1.2-1.5kg instant powder capsule black tea.

Above-mentioned Sprinkle Caps black tea, can restore after brewing, stir with 100ml boiling water is the described suspension black tea of step 3.

Embodiment 4:

1. get new listing green tea 1kg,, pulverized 40 seconds for 10000 rev/mins, cross 220 order sub-sieves, outstanding being dissolved in the 1000ml distilled water with the omnipotent disintegrating machine of high speed.

2. get gelatin 520g, be dissolved in fully in the 4000ml distilled water, add propane diols 20ml, glycerine 48ml stirs, and is HCl and the NaOH solution adjustment pH value to 8 of 2N with concentration.

3. with 500 rev/mins mixing speed, the continuous solution prepared of whipping step 2, and in 5 minutes, at leisure the tea dust suspension that step 1 made is poured into.Under the situation that keeps former rotating speed, in 1 minute, add the 40g tannic acid gradually, keep and stirred 5 minutes, promptly make the suspension shape microcapsule tea goods that are emerald green, stable.

Get above-mentioned suspension 20ml, after brewing with clear water, the minute quantity precipitation is arranged, it is emerald green that color and luster still is, the delicate fragrance that olfactory tool tea is special.Its emerald green keeping more than 10 hours just can become comprehensive look gradually because of oxidized.And ordinary tea leaves brews after promptly can be oxidized to brown in 5 to 15 minutes; By pulverizing and without the tea dust of other processing, only will be oxidized to brownly for only after then brewing in 3 minutes, and a large amount of precipitations be arranged.

Claims (6)

1, a kind of microcapsule tea is characterized in that the capsule heart is tealeaves powder or tealeaves extract, and the capsule material that the outside coats is water-soluble resin and/or protein matter.

2, microcapsule tea as claimed in claim 1, be characterised in that described water-soluble resin as the capsule material can be gelatin, gum arabic, carboxymethyl cellulose, peach gum, starch, methylcellulose, one of arabinose-half poly lactose, polyvinyl alcohol, polyacrylic acid, sodium alginate, maltodextrin, or multiple combination.

3, microcapsule tea as claimed in claim 1 is characterised in that described protein matter as the capsule material can be one or more combination of casein-sodium, egg white, casein, collagen, soybean protein.

4, a kind of production method of microcapsule tea, it is characterized in that tea-leaf power or tealeaves extract, under room temperature and PH6.5-10 condition, be dispersed in the capsule material aqueous solution of 8-50% concentration expressed in percentage by weight and form, described capsule material is water-soluble resin and/or protein matter.

5, as the production method of microcapsule tea as described in the claim 4, be characterised in that the flocculant that adds 0.2-2.0% weight in the described capsule material aqueous solution, described flocculant can be tannin, tannic acid or theophylline.

6, the production method of microcapsule tea as claimed in claim 4, be characterised in that the multivalence alcohol that adds 2-4% weight in the described capsule material aqueous solution is as size, described multivalence alcohol can be glycerine, propane diols, maltitol, xylitol, they one of them or multiple combination.