Processing method of pure Liupao tea beverage

Abstract

The invention provides a processing method of a pure Liupao tea beverage. The processing method comprises the steps of crushing, high-pressure wall breaking, ultrasonic mixing, boiling extraction, sealing and high-temperature sterilization, filling and the like. The invention innovates a technical scheme for extracting the pure Liupao tea beverage by combining high-pressure wall breaking, ultrasonic oscillation mixing, temperature-controlled boiling and multiple filtration, the raw materials are fully utilized, the product quality is effectively improved, and the working time is shortened. Wherein cell walls in the tea leaves are broken by adopting a high-pressure decompression wall breaking technology, so that beneficial components are fully released, and the raw materials are fully utilized; an ultrasonic oscillation mixing technology is adopted, so that tea powder after wall breaking is fully mixed with water, the subsequent extraction time is effectively prolonged, and the time is saved; by adopting a multiple filtering technology combining a centrifugal machine and a ceramic membrane for filtering, a filtered finished product is finer.

Description

Technical Field

[0001] The invention relates to the field of agricultural food processing, in particular to a processing method of Liubao tea pure tea beverage. Background Art

[0002] Liubao tea belongs to the category of dark tea. It uses fresh leaves of Cangwu County group species, Guangxi large and medium leaf species and their separated, selected varieties and strains as raw materials and is processed according to a specific process to produce dark tea with unique quality characteristics. Liubao tea is a warm tea. In addition to the health benefits shared by other teas, it also has the effects of cooling off, removing dampness, improving eyesight and refreshing the mind, and helping digestion. Nowadays, people's fast-paced work and life have led to many people having no time to make tea for drinking. There is a huge market demand for extracting Liubao tea into easy-to-drink Liubao tea beverages.

[0003] In terms of the technology for deep processing of Liubao tea, there are products of deep processing of Liubao tea, but most of them are directly crushed into powder to make tea bags or added with other compound formulas to make functional Liubao tea. However, such products still fail to effectively solve the problem of the inconvenience of drinking Liubao tea, and there are no specific products on the market that make Liubao tea into bottled beverages.

[0004] At present, the most common technology is to place Liubao tea and other compound raw materials in a boiling tank for heating and stirring extraction. The extraction time is relatively long under normal pressure. At the same time, after high-speed stirring, the raw materials and water need to go through a multi-layer filtration process after mixing, and the process is complicated. If high-pressure wall breaking is combined with ultrasonic technology to extract the beneficial ingredients of pure Liubao tea, the quality of Liubao tea beverages will be improved. Among the equipment related to the technology of extracting pure tea beverages using high-pressure, medium- and low-temperature ultrasonic technology, there are ultrasonic oscillation extraction equipment, but no extraction technology that uses high-pressure wall breaking, ultrasonic vibration, and temperature-controlled water bath to extract pure Liubao tea beverages has been found. Summary of the invention

[0005] In view of the above problems, the technical problem to be solved by the present invention is to provide a processing method of Liubao tea pure tea beverage, comprising the following steps: (1) Put Liubao tea, organic tea leaves and tea stems in a grinder according to appropriate proportions and grind them so that they can pass through a 50-mesh sieve to obtain a mixture powder of Liubao tea, organic tea leaves and tea stems; (2) placing 10 kg to 15 kg of the mixed powder obtained in step (1) in a high-pressure wall-breaking machine, pressurizing the machine to 0.4 to 0.6 MPa, and then releasing gas for a pressure release time of 0.2 s to 0.3 s to obtain Liubao tea wall-broken powder; (3) placing the Liubao tea wall-broken powder obtained in step (2) in an ultrasonic vibration tank, adding 60L-90L of RO water, and performing ultrasonic vibration at an ultrasonic frequency of 40KHz for 10min-15min to obtain a Liubao tea suspension; (4) The Liubao tea suspension obtained in step (3) is placed in an extractor with stirring blades for high-temperature extraction at a temperature of 90°C to 95°C. The extraction time is 400s to 600s. The stirring speed is 10r / min. After the extraction is completed, a Liubao tea extract is obtained; (5) placing the Liubao tea extract obtained in step (4) in a tripod centrifuge with a centrifugal drum having a pore size of 200 for centrifugal coarse filtration, with the drum rotating at a speed of 300 r / min, to obtain a Liubao tea centrifuge liquid after centrifugation; (6) placing the Liubao tea centrifuge obtained in step (5) in a filter with a ceramic membrane for pressurized fine filtration, wherein the ceramic membrane filter has a ceramic membrane that can pass particles with a pore size of 1.5 μm, and filtering under pressure until completion to obtain the Liubao tea fine filtrate; (7) The Liubao tea essence filtrate obtained in step (6) is placed in a sealed stainless steel sterilization storage tank for sterilization, wherein the sterilization storage tank is heated to a sterilization temperature of 131° C. to 135° C., and the sterilization temperature is maintained for 60 s to 120 s to obtain a Liubao tea sterilized liquid, which is naturally cooled to below 30° C. for later use; (8) The Liubao tea sterilized liquid obtained in step (7) is sent to a filling machine for filling to obtain a Liubao tea pure tea beverage.

[0006] The present invention adopts high-pressure wall breaking and ultrasonic technology to extract the beneficial ingredients of pure Liubao tea, which will improve the quality of Liubao tea beverages. The high-pressure pressure relief wall breaking technology is used to break the cell walls in the tea leaves, so that the beneficial ingredients are fully released and the raw materials are fully utilized; the ultrasonic oscillation mixing technology is used to fully mix the tea powder after the wall breaking with water, effectively improving the subsequent extraction time and saving time; the multiple filtration technology of centrifuge and ceramic membrane combined filtration is used to make the filtered finished product more refined. The present invention innovates a technical solution that combines high-pressure wall breaking, ultrasonic oscillation mixing, temperature controlled boiling, and multiple filtration to extract pure Liubao tea beverages, which fully utilizes the raw materials, effectively improves the quality of the product, and reduces working time. DETAILED DESCRIPTION

[0007] The specific embodiments of the present invention are further described below. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various example embodiments of the present invention described below can be combined with each other as long as there is no conflict between them. Embodiment 1:

[0008] A method for processing a Liubao tea pure tea beverage comprises the following steps: (1) Put Liubao tea, organic tea leaves and tea stems in a grinder according to appropriate proportions and grind them so that they can pass through a 50-mesh sieve to obtain a mixture powder of Liubao tea, organic tea leaves and tea stems; (2) placing 10 kg of the mixed powder obtained in step (1) in a high-pressure wall-breaking machine, pressurizing the machine to 0.4-0.6 MPa and then releasing gas for a pressure release time of 0.2 s-0.3 s to obtain Liubao tea wall-broken powder; (3) placing the Liubao tea wall-broken powder obtained in step (2) in an ultrasonic vibration tank, adding 60 L of RO water, and performing ultrasonic vibration at an ultrasonic frequency of 40 KHz and an ultrasonic working time of 10 min to obtain a Liubao tea suspension; (4) The Liubao tea suspension obtained in step (3) is placed in an extractor with stirring blades for high-temperature extraction at 95°C. The extraction time is 400s. The stirring speed is 10r / min. After the extraction is completed, a Liubao tea extract is obtained; (5) placing the Liubao tea extract obtained in step (4) in a tripod centrifuge with a centrifugal drum having a pore size of 200 for centrifugal coarse filtration, with the drum rotating at a speed of 300 r / min, to obtain a Liubao tea centrifuge liquid after centrifugation; (6) placing the Liubao tea centrifuge obtained in step (5) in a filter with a ceramic membrane for pressurized fine filtration, wherein the ceramic membrane filter has a ceramic membrane that can pass particles with a pore size of 1.5 μm, and filtering under pressure until completion to obtain the Liubao tea fine filtrate; (7) The Liubao tea essence filtrate obtained in step (6) is placed in a sealed stainless steel sterilization storage tank for sterilization. The sterilization storage tank is heated to a sterilization temperature of 131° C. to 135° C., and the sterilization temperature is maintained for 80 seconds to obtain a Liubao tea sterilized liquid, which is naturally cooled to below 30° C. for later use; (8) The Liubao tea sterilized liquid obtained in step (7) is sent to a filling machine for filling to obtain a Liubao tea pure tea beverage. Embodiment 2:

[0009] A method for processing a Liubao tea pure tea beverage comprises the following steps: (1) Put Liubao tea, organic tea leaves and tea stems in a grinder according to appropriate proportions and grind them so that they can pass through a 50-mesh sieve to obtain a mixture powder of Liubao tea, organic tea leaves and tea stems; (2) placing 15 kg of the mixed powder obtained in step (1) in a high-pressure wall-breaking machine, pressurizing the machine to 0.4-0.6 MPa and then releasing gas for a pressure release time of 0.2 s-0.3 s to obtain Liubao tea wall-broken powder; (3) placing the Liubao tea wall-broken powder obtained in step (2) in an ultrasonic vibration tank, adding 90 L of RO water, and performing ultrasonic vibration at an ultrasonic frequency of 40 KHz and an ultrasonic working time of 15 min to obtain a Liubao tea suspension; (4) The Liubao tea suspension obtained in step (3) is placed in an extractor with stirring blades for high-temperature extraction at 95°C. The extraction time is 500s. The stirring speed is 10r / min. After the extraction is completed, a Liubao tea extract is obtained; (5) placing the Liubao tea extract obtained in step (4) in a tripod centrifuge with a centrifugal drum having a pore size of 200 for centrifugal coarse filtration, with the drum rotating at a speed of 300 r / min, to obtain a Liubao tea centrifuge liquid after centrifugation; (6) placing the Liubao tea centrifuge obtained in step (5) in a filter with a ceramic membrane for pressurized fine filtration, wherein the ceramic membrane filter has a ceramic membrane that can pass particles with a pore size of 1.5 μm, and filtering under pressure until completion to obtain the Liubao tea fine filtrate; (7) The Liubao tea essence filtrate obtained in step (6) is placed in a sealed stainless steel sterilization storage tank for sterilization. The sterilization storage tank is heated to a sterilization temperature of 131° C. to 135° C., and the sterilization temperature is maintained for 120 seconds to obtain a Liubao tea sterilized liquid, which is naturally cooled to below 30° C. for later use; (8) The Liubao tea sterilized liquid obtained in step (7) is sent to a filling machine for filling to obtain a Liubao tea pure tea beverage. Embodiment 3:

[0010] A method for processing a Liubao tea pure tea beverage comprises the following steps: (1) Put Liubao tea, organic tea leaves and tea stems in a grinder according to appropriate proportions and grind them so that they can pass through a 50-mesh sieve to obtain a mixture powder of Liubao tea, organic tea leaves and tea stems; (2) placing 12 kg of the mixed powder obtained in step (1) in a high-pressure wall-breaking machine, pressurizing the machine to 0.4-0.6 MPa and then releasing gas for a pressure release time of 0.2 s-0.3 s to obtain Liubao tea wall-broken powder; (3) placing the Liubao tea wall-broken powder obtained in step (2) in an ultrasonic vibration tank, adding 70 L of RO water, and performing ultrasonic vibration at an ultrasonic frequency of 40 KHz and an ultrasonic working time of 10 min to obtain a Liubao tea suspension; (4) The Liubao tea suspension obtained in step (3) is placed in an extractor with stirring blades for high-temperature extraction at 90°C. The extraction time is 600s. The stirring speed is 10r / min. After the extraction is completed, a Liubao tea extract is obtained; (5) placing the Liubao tea extract obtained in step (4) in a tripod centrifuge with a centrifugal drum having a pore size of 200 for centrifugal coarse filtration, with the drum rotating at a speed of 300 r / min, to obtain a Liubao tea centrifuge liquid after centrifugation; (6) placing the Liubao tea centrifuge obtained in step (5) in a filter with a ceramic membrane for pressurized fine filtration, wherein the ceramic membrane filter has a ceramic membrane that can pass particles with a pore size of 1.5 μm, and filtering under pressure until completion to obtain the Liubao tea fine filtrate; (7) The Liubao tea essence filtrate obtained in step (6) is placed in a sealed stainless steel sterilization storage tank for sterilization. The sterilization storage tank is heated to a sterilization temperature of 131° C. to 135° C., and the sterilization temperature is maintained for 90 seconds to obtain a Liubao tea sterilized liquid, which is naturally cooled to below 30° C. for later use; (8) The Liubao tea sterilized liquid obtained in step (7) is sent to a filling machine for filling to obtain a Liubao tea pure tea beverage.

Claims

1. A method for processing a Liubao tea pure tea beverage, comprising the following steps: (1) Put Liubao tea, organic tea leaves and tea stems in a grinder according to appropriate proportions and grind them so that they can pass through a 50-mesh sieve to obtain a mixture powder of Liubao tea, organic tea leaves and tea stems; (2) placing 10 kg to 15 kg of the mixed powder obtained in step (1) in a high-pressure wall-breaking machine, pressurizing the machine to 0.4 to 0.6 MPa, and then releasing gas for a pressure release time of 0.2 s to 0.3 s to obtain Liubao tea wall-broken powder; (3) placing the Liubao tea wall-broken powder obtained in step (2) in an ultrasonic vibration tank, adding 60L-90L of RO water, and performing ultrasonic vibration at an ultrasonic frequency of 40KHz for 10min-15min to obtain a Liubao tea suspension; (4) The Liubao tea suspension obtained in step (3) is placed in an extractor with stirring blades for high-temperature extraction at a temperature of 90°C to 95°C. The extraction time is 400s to 600s. The stirring speed is 10r / min. After the extraction is completed, a Liubao tea extract is obtained; (5) placing the Liubao tea extract obtained in step (4) in a tripod centrifuge with a centrifugal drum having a pore size of 200 for centrifugal coarse filtration, with the drum rotating at a speed of 300 r / min, to obtain a Liubao tea centrifuge liquid after centrifugation; (6) placing the Liubao tea centrifuge obtained in step (5) in a filter with a ceramic membrane for pressurized fine filtration, wherein the ceramic membrane filter has a ceramic membrane that can pass particles with a pore size of 1.5 μm, and filtering under pressure until completion to obtain the Liubao tea fine filtrate; (7) The Liubao tea essence filtrate obtained in step (6) is placed in a sealed stainless steel sterilization storage tank for sterilization, wherein the sterilization storage tank is heated to a sterilization temperature of 131° C. to 135° C., and the sterilization temperature is maintained for 60 s to 120 s to obtain a Liubao tea sterilized liquid, which is naturally cooled to below 30° C. for later use; (8) The Liubao tea sterilized liquid obtained in step (7) is sent to a filling machine for filling to obtain a Liubao tea pure tea beverage.