CN105875888A - Improved Fuzhuan tea processing method - Google Patents

Abstract

The invention provides to an improved Fuzhuan tea processing method and relates to the field of tea leaf processing. The improved Fuzhuan tea processing method is characterized by comprising the processing steps of pile fermentation, sealing moisture regaining, weighing, pressing, vacuum packaging, high-pressure sterilization, cooling shaping, unpacking, high-humidity mouldy spot appearing, aroma increasing drying and inspection packaging. Compared with traditional Fuzhuan tea processing, the improved Fuzhuan tea processing method has the advantages that by the mode of sealing moisture regaining, the purpose of softening tea leaves is achieved, and the uniformity of the moisture content of the tea leaves is effectively controlled; brick tea is quickly released from molds after being pressed, and thus the using quantity of the molds is reduced; the humidity of different mouldy spot appearing stages is controlled, so that golden spots inside brick tea grow more uniformly, the taste and quality of the tea leaves are improved, and overgrowing of contaminating bacteria on the surface of brick tea under the high-humidity environment is also prevented through irradiation of ultraviolet lamps.

Description

A kind of Fu-brick tea processing method of improvement

Technical field

The present invention relates to processing field of tea leaves, the Fu-brick tea processing method of a kind of improvement.

Background technology

FUZHUAN Camellia complete fermentation tea, is the black tea product that in current all teas, processing technique is the most complicated, the production cycle is the longest, technique is unique.Fu-brick tea is with raw dark green tea as raw material, screened, decatize, wet heap, the working procedure processing such as suppress, grow dim and be dried, wherein grow dim be Fu-brick tea distinguishing character formed critical process, mainly Eurotium cristatum is promoted to breed in the brick tea of certain elasticity by the suitable environmental condition of control, form golden yellow cleistothecium, be commonly called as " JINHUA ".Being processed by fungus growing process to make Fu-brick tea flavour, fragrance and color and luster all be different from other black tea products.

In the course of processing of Fu-brick tea; affected by the stability of steam pressure, the uniformity of water content of tea and processing environment cleanliness factor; often occur owing to decatize operation steams the tea problem causing follow-up brick tea to occur living contaminants during growing dim not in place; not only have a strong impact on Qualified Products Rate; and the pollution of miscellaneous bacteria tends to occur at inside brick tea, also bring the biggest difficulty to quality inspection.Fu-brick tea is due to the needs of fungus growing process, and degree of packing when being pressed into brick tea is less, causes shaping time long, takies substantial amounts of mould, affects subsequent production.Leaning on near-surface region due to the restriction of the environment that grows dim additionally, brick tea is internal, moisture loss is too fast, it is suppressed that the growth of Eurotium Cristatum, and the taste quality causing this part Folium Camelliae sinensis is poor.

Summary of the invention

In order to overcome above technological deficiency, the invention provides the Fu-brick tea processing method of a kind of improvement, its solution is: and wet heap → sealing moisture regain → weighing → compacting → vacuum packaging → autoclaving → cooling and shaping → unpack → high humidity grows dim → and Titian is dried → test package.It is characterized in that one is to carry out sealing moisture regain after wet heap terminates, and makes Folium Camelliae sinensis fully absorb moisture, reaches to soften the purpose of Folium Camelliae sinensis, and by being stirred continuously the homogeneity realizing Folium Camelliae sinensis moisture content, it is ensured that the effectiveness of post sterilization；Two is quickly to move back mould after brick tea is suppressed, and is vacuum-packed, reduces mold use quantity；Three is to utilize High Temperature High Pressure to carry out sterilizing, reaches effectively to kill the purpose of miscellaneous bacteria；Four is to grow dim under conditions of high humidity, makes the JINHUA growth in brick press close to top layer, promotes the conversion of tea leaf quality.

Procedure of processing in the technology of the present invention solution is operated as follows:

(1) wet heap: assorted good raw tea, after high temperature steaming, proceeds to wet heap storage and carries out wet heap, wet stack temperature 60-90 DEG C, wet 2-48 hour heap time；

(2) moisture regain is sealed: put into by raw material good for wet heap and seal in moisture regain tank, spray into tea juice while stirring, stand moisture regain after having stirred, make water content of tea control between 22-34%；

(3) weigh: according to the difference of compacting specification, weigh the raw tea after moisture regain；

(4) compacting: load weighted raw tea is poured into mould, and brick tea pressed density controls at 0.5-1.5g/cm³；

(5) vacuum packaging: Fu-brick tea compacting completed exits mould, utilizes vacuum packing machine to wrap up it；

(6) autoclaving: the brick tea wrapped is carried out autoclave sterilization, sterilising temp controls at 105-121 DEG C, and sterilization time controlled at 5-30 minute；

(7) cooling and shaping: the brick tea that sterilizing completes is placed in cooling and shaping on clothes hanger；

(8) unpack: after having shaped, remove sizing packaging material；

(9) high humidity grows dim: brick tea sizing completed swings in constant temperature and humidity room, temperature controls at 26-30 DEG C, preliminary phase of growing dim to humid control more than 80%, the relative humidity in mid-term that grows dim controls at 50-70%, the later stage relative humidity that grows dim controls about 50%, room cleanliness factor 300,000 grades, uviol lamp intermittent irradiation in the initial stage room that grows dim；

(10) Titian is dried: growing dim after end, to heat up every day, 1 DEG C is aged, dry 3-5 days at 40 DEG C；

(11) test package: test the Fu-brick tea being dried, satisfactory carrying out is packaged into case.

Owing to using above technology, the present invention it is advantageous that compared with processing with traditional black tea brick:

1. by sealing the process of the techniques such as moisture regain, vacuum packaging, autoclaving, it is greatly improved the effectiveness killing miscellaneous bacteria, the problem having stopped the internal varied bacteria growing of brick tea；

2. quickly move back mould after compacting and decrease mold use, it is achieved that the quick turnover of mould, reduce production cost；

3. by controlling the humidity of different "Fahua" phase, making the JINHUA growth within brick tea more uniform, improve the taste quality of Folium Camelliae sinensis, the evil that be also prevent brick tea surface miscellaneous bacteria under high humidity environment by ultra violet lamp is raw.

Detailed description of the invention

Below in conjunction with embodiment, the invention will be further described:

As a example by the processing of 1 kilogram of Fu-brick tea

(1) wet heap: assorted good raw tea, after high temperature steaming, proceeds to wet heap storage and carries out wet heap, wet stack temperature 65-85 DEG C, 4 hours wet heap time；

(2) moisture regain is sealed: put into by raw material good for wet heap and seal in moisture regain tank, spray into tea juice while stirring, stand moisture regain 1 hour after having stirred, make water content of tea control about 30%；

(3) weigh: the processing loss by 1% calculates, weigh the raw tea 1.568 kilograms after moisture regain；

(4) compacting: load weighted raw tea is poured into mould, and brick tea pressed density controls at 0.7g/cm³；

(5) vacuum packaging: Fu-brick tea compacting completed exits mould, utilizes vacuum packing machine to wrap up it；

(6) autoclaving: the brick tea wrapped is carried out autoclave sterilization, sterilising temp controls at 110 DEG C, and sterilization time controlled at 20 minutes；

(7) cooling and shaping: the brick tea that sterilizing completes is placed on clothes hanger cooling and shaping overnight；

(8) unpack: after having shaped, remove sizing packaging material；

(9) high humidity grows dim: brick tea sizing completed swings in constant temperature and humidity room, temperature controls at 28 DEG C, the first 4 days relative humiditys that grow dim control more than 80%, the 5th day to the 9 days relative humiditys that grow dim control at 50-70%, the 10th day to the 14 days relative humiditys that grow dim control about 50%, room cleanliness factor 300,000 grades, in the first 4 days rooms that grow dim, every 4 hours of uviol lamp irradiates once, irradiates duration half an hour；

(10) Titian is dried: growing dim after end, to heat up every day, 1 DEG C is aged, and is dried 4 days at 40 DEG C, makes brick tea water content control about 8%；

(11) test package: test the Fu-brick tea being dried, satisfactory carrying out is packaged into case.

Claims (2)

1. the Fu-brick tea processing method improved, it is characterised in that procedure of processing is: wet heap → sealing moisture regain → weighing → compacting → vacuum packaging → autoclaving → cooling and shaping → unpack → high humidity grows dim → and Titian is dried → test package.

The Fu-brick tea processing method of a kind of improvement the most according to claim 1, it is characterised in that procedure of processing is operated as follows:

(1) wet heap: assorted good raw tea, after high temperature steaming, proceeds to wet heap storage and carries out wet heap, wet stack temperature 60-90 DEG C, wet 2-48 hour heap time；

(2) moisture regain is sealed: put into by raw material good for wet heap and seal in moisture regain tank, spray into tea juice while stirring, stand moisture regain after having stirred, make water content of tea control between 22-34%；

(3) weigh: according to the difference of compacting specification, weigh the raw tea after moisture regain；

(4) compacting: load weighted raw tea is poured into mould, and brick tea pressed density controls at 0.5-1.5g/cm³；

(5) vacuum packaging: Fu-brick tea compacting completed exits mould, utilizes vacuum packing machine to wrap up it；

(6) autoclaving: the brick tea wrapped is carried out autoclave sterilization, sterilising temp controls at 105-121 DEG C, and sterilization time controlled at 5-30 minute；

(7) cooling and shaping: the brick tea that sterilizing completes is placed in cooling and shaping on clothes hanger；

(8) unpack: after having shaped, remove sizing packaging material；

(9) high humidity grows dim: brick tea sizing completed swings in constant temperature and humidity room, temperature controls at 26-30 DEG C, preliminary phase of growing dim to humid control more than 80%, the relative humidity in mid-term that grows dim controls at 50-70%, the later stage relative humidity that grows dim controls about 50%, room cleanliness factor 300,000 grades, uviol lamp intermittent irradiation in the initial stage room that grows dim；

(10) Titian is dried: growing dim after end, to heat up every day, 1 DEG C is aged, dry 3-5 days at 40 DEG C；

(11) test package: test the Fu-brick tea being dried, satisfactory carrying out is packaged into case.