1. A preparation method for brewing grape vinegar by using microzyme is characterized in that raw materials of the grape vinegar comprise fresh grapes, water, rice flour, wheat bran, edible salt, erythritol and a liquorice extract, and the preparation method comprises the following steps:

s1, selecting materials: selecting mature fresh grapes, removing platycodon grandiflorum, washing, and draining;

s2, yeast propagation: diluting active yeast powder with sterile water, adding into the mixture of rice flour and wheat bran, and culturing to obtain yeast;

s3, alcoholic fermentation: putting fresh grapes and yeast into a fermentation tank, introducing air into the fermentation tank, carrying out aerobic respiration propagation on the yeast, cutting off air supply of the fermentation tank, and carrying out anaerobic respiration on the yeast to generate grape alcohol;

s4, acetic fermentation: ending fermentation, introducing air into the fermentation tank, carrying out aerobic fermentation, and decomposing the grape alcohol into acetic acid by acetic acid bacteria;

s5, sterilization: heating and sterilizing in a sterilizing pot, and cooling to obtain grape vinegar;

the fermentation tank provided by the preparation method comprises a tank body (1), a pressure storage tank (2), a liquid spraying assembly, an extrusion plate (3), a lifting false bottom (4) and an air bag (5), wherein a sealing door (6), a liquid conveying pipe (7), an exhaust pipe (8), a circulating pipe (9), a first gas injection pipe (10) and a second gas injection pipe (11) are respectively arranged on the surface of the tank body (1), a liquid discharge pipe (12) is arranged on the surface of the sealing door (6), and the liquid spraying assembly comprises a fixed partition plate (13), a flow guide pipe (14), a rotating plate (15), a spring (16) and a control hand wheel (17).

2. The method for preparing grape vinegar by yeast brewing according to claim 1, wherein: the first gas injection pipe (10) is communicated with an air bag (5) in the tank body (1), the lifting false bottom (4) is fixedly installed at the top of the air bag (5), the lifting false bottom (4) is in sliding connection with the inner wall of the tank body (1), and a sealing ring is arranged on the contact surface of the lifting false bottom (4) and the inner wall of the tank body (1).

3. The method for preparing grape vinegar by yeast brewing according to claim 1, wherein: the improved filter is characterized in that the extrusion plate (3) is fixedly mounted on the inner wall of the tank body (1), a sliding groove is formed in the surface of the extrusion plate (3), a filter (18) is connected to the inner wall of the sliding groove in a sliding mode, the filter (18) is of an upper opening structure, and a first filter screen (19) and a second filter screen (20) are arranged on the left side and the right side of the filter (18) respectively.

4. The method for preparing grape vinegar by yeast brewing according to claim 1, wherein: the tank body (1) is communicated with the pressure storage tank (2) through the exhaust pipe (8), the surface of the exhaust pipe (8) is provided with a three-way valve (21), and the three-way valve (21) is communicated with the tank body (1) through the circulating pipe (9).

5. The method for preparing grape vinegar by yeast brewing according to claim 1, wherein: the fixed baffle (13) is fixedly connected with the inner wall of the tank body (1), the flow guide pipe (14) is rotatably installed in a central hole of the fixed baffle (13), the rotating plate (15) is fixedly installed on the surface of the flow guide pipe (14), the lower surface of the rotating plate (15) is tightly attached to the upper surface of the fixed baffle (13), and the upper surfaces of the rotating plate (15) and the fixed baffle (13) are provided with through holes.

6. The method for preparing grape vinegar by yeast brewing according to claim 1, wherein: the control hand wheel (17) rotates and installs on the top of jar body (1), the bottom and honeycomb duct (14) fixed connection of control hand wheel (17), the top fixedly connected with scale ring (22) of jar body (1), and scale ring (22) establish around control hand wheel (17).

7. The grape vinegar brewed by using the yeast is characterized in that: the method for preparing grape vinegar by brewing grape vinegar with yeast as claimed in claim 1.

Background

The grape vinegar is a product obtained by fermenting grape wine with acetic acid, and the grape vinegar has two methods, one is that the wine residue left after brewing the grape wine is used for fermenting the acetic acid, and the vinegar is obtained after alcohol is converted into the acetic acid, and the vinegar is also called as the grape wine vinegar; the other method is to directly brew vinegar with fresh grapes, and the specific method for directly brewing vinegar with fresh grapes is to remove stalks of fresh grapes, break skins of the grapes, squeeze juice, heat the grape juice, evaporate water in the grape juice, improve sugar content to achieve a concentration effect, then place the concentrated grape juice into a wooden barrel, slowly ferment the grape juice, and acetic acid bacteria can gradually convert the grape juice into vinegar after seasonal temperature changes, and the latter grape vinegar is purer, mellow in taste and rich in nutritional value than the grape vinegar brewed by the former method.

In the prior art for brewing grape vinegar, in the process of preparing grape alcohol in the previous stage, the grape vinegar is fermented naturally, the conditions such as temperature, air, pressure and the like required by fermentation are not easy to control, the process is slow, the process is complicated, the production efficiency is low, the aroma and the taste of the finished product of the grape vinegar are influenced by a catalyst, and the flavor is not pure.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides grape vinegar brewed by using yeast and a preparation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

a preparation method for brewing grape vinegar by using yeast is disclosed, wherein the raw materials of the grape vinegar comprise fresh grapes, water, rice flour, wheat bran, edible salt, erythritol and a licorice extract, and the preparation method comprises the following steps:

s1, selecting materials: selecting mature fresh grapes, removing platycodon grandiflorum, washing, and draining;

s2, yeast propagation: diluting active yeast powder with sterile water, adding into the mixture of rice flour and wheat bran, and culturing to obtain yeast;

s3, alcoholic fermentation: putting fresh grapes and yeast into a fermentation tank, introducing air into the fermentation tank, carrying out aerobic respiration propagation on the yeast, cutting off air supply of the fermentation tank, and carrying out anaerobic respiration on the yeast to generate grape alcohol;

s4, acetic fermentation: ending fermentation, introducing air into the fermentation tank for aerobic fermentation, and decomposing the grape alcohol into acetic acid by the acetic acid bacteria;

s5, sterilization: heating and sterilizing in a sterilizing pot, and cooling to obtain the grape vinegar.

The fermentation tank provided by the preparation method comprises a tank body, a pressure storage tank, a liquid spraying assembly, an extrusion plate, a lifting false bottom and an air bag, wherein a sealing door, a liquid conveying pipe, an exhaust pipe, a circulating pipe, a first gas injection pipe and a second gas injection pipe are respectively arranged on the surface of the tank body, a liquid discharge pipe is arranged on the surface of the sealing door, and the liquid spraying assembly comprises a fixed partition plate, a flow guide pipe, a rotating plate, a spring and a control hand wheel.

Preferably, the first gas injection pipe is communicated with an air bag in the tank body, the lifting false bottom is fixedly installed at the top of the air bag, the lifting false bottom is in sliding connection with the inner wall of the tank body, and a sealing ring is arranged on the contact surface of the lifting false bottom and the inner wall of the tank body.

Preferably, stripper plate fixed mounting has seted up the spout at the inner wall of the jar body, the inner wall sliding connection of spout has the filter, and the filter is upper shed structure, and the left and right sides of filter is provided with first filter screen and second filter screen respectively.

Preferably, the tank body is communicated with the pressure storage tank through an exhaust pipe, a three-way valve is arranged on the surface of the exhaust pipe, and the three-way valve is communicated with the tank body through a circulating pipe.

Preferably, the fixed partition plate is fixedly connected with the inner wall of the tank body, the flow guide pipe is rotatably installed in a central hole of the fixed partition plate, the rotating plate is fixedly installed on the surface of the flow guide pipe, the lower surface of the rotating plate is tightly attached to the upper surface of the fixed partition plate, and the upper surfaces of the rotating plate and the fixed partition plate are both provided with through holes.

Preferably, the control hand wheel rotates and installs on the top of jar body, and the bottom and the honeycomb duct fixed connection of control hand wheel, the top fixed connection of jar body has the scale ring, and the scale ring is established around the control hand wheel.

Preferably, the preparation method of the grape vinegar by brewing the grape vinegar with yeast is used for preparing the grape vinegar.

The invention has the following beneficial effects:

1. through set up the false end of lift in the fermentation cylinder, the false end of lift is by the jacking, can press broken grape peel, promotes to mix, can raise the liquid level of fermentation mixture, with the leading-in fixed partition plate upper portion of mixture liquid, the liquid downstream promotion aerobic respiration of upper portion still can crowd into the storage tank with upper portion space carbon dioxide, but the air is gone into to the whereabouts pump of the false end of lift to realize promoting the effect of fermentation speed.

2. Through setting up the storage pressure jar, the carbon dioxide that the fermentation process produced is stored in the storage pressure jar, stores up the pressure jar from the circulating pipe to jar body gas injection, can regulate and control interior pressure, fermentation with higher speed to be favorable to accelerating the row vinegar of fluid-discharge tube, the storage pressure jar is followed the second gas injection pipe and is injected the gas to jar body, can take away the temperature that the fermentation mixed liquid fermentation produced, reduces the fermentation temperature, thereby realizes the effect of fermentation temperature control.

3. Through setting up stripper plate and filter, firstly, provide the backward flow passageway for the big particulate matter on extrusion grape process inflow stripper plate upper portion, make it can follow first filter screen backward flow to the stripper plate lower part, secondly, first filter screen shelters from at the flowing back oral area, and the slag-liquid separation of being convenient for, discharge grape vinegar, the equal slope setting of top surface and stripper plate on the false bottom of going up and down is convenient for arrange the sediment to the effect of simplifying production processes is realized.

Drawings

FIG. 1 is a schematic view of the overall structure of a fermenter according to the present invention;

FIG. 2 is a schematic view of the internal structure of the tank according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of a structure for separating a fixed partition plate from a draft tube according to the present invention;

fig. 5 is a schematic view of a filter structure according to the present invention.

In the figure: 1 tank body, 2 pressure storage tanks, 3 extrusion plates, 4 lifting false bottoms, 5 air bags, 6 sealing doors, 7 infusion tubes, 8 exhaust tubes, 9 circulating tubes, 10 first air injection tubes, 11 second air injection tubes, 12 liquid discharge tubes, 13 fixed partition plates, 14 flow guide tubes, 15 rotating plates, 16 springs, 17 control hand wheels, 18 filters, 19 first filter screens, 20 second filter screens, 21 three-way valves and 22 scale rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-5, a method for preparing grape vinegar by using yeast, the raw materials of the grape vinegar comprise fresh grapes, water, rice flour, wheat bran, edible salt, erythritol and licorice extract, and the preparation method comprises the following steps:

s1, selecting materials: selecting mature fresh grapes, removing platycodon grandiflorum, washing, and draining;

s2, yeast propagation: diluting active yeast powder with sterile water, adding into the mixture of rice flour and wheat bran, and culturing to obtain yeast;

s3, alcoholic fermentation: putting fresh grapes and yeast into a fermentation tank, introducing air into the fermentation tank, and carrying out aerobic respiration propagation on the yeast, wherein the reaction formula is as follows under an aerobic condition:

the fermentation cylinder cuts off the air feed, and the yeast carries out anaerobic respiration, produces grape alcohol, and under anaerobic condition, the reaction formula is as follows:

s4, acetic fermentation: ending fermentation, introducing air into the fermentation tank for aerobic fermentation, and decomposing the grape alcohol into acetic acid by the acetic acid bacteria;

s5, sterilization: heating in a sterilizing pot for sterilizing, cooling, and adding erythritol and Glycyrrhrizae radix extract to obtain final product of grape vinegar.

The fermentation tank provided by the preparation method comprises a tank body 1, a pressure storage tank 2, a liquid spraying assembly, an extrusion plate 3, a lifting false bottom 4 and an air bag 5, wherein the extrusion plate 3 is fixedly installed on the inner wall of the tank body 1, a sliding groove is formed in the surface of the extrusion plate 3, a filter 18 is connected to the inner wall of the sliding groove in a sliding mode, the filter 18 is of an upper opening structure, a first filter screen 19 and a second filter screen 20 are respectively arranged on the left side and the right side of the filter 18, a filtering hole is formed in the extrusion plate 3 and smaller than the diameter of the filtering hole of the first filter screen 19, and the diameter of the filtering hole of the second filter screen 20 is smaller than the diameter of the filtering hole of the first filter screen 19, so that the second filter screen 20 can realize residue-liquid separation.

The surface of the tank body 1 is respectively provided with a sealing door 6, a liquid conveying pipe 7, an exhaust pipe 8, a circulating pipe 9, a first gas injection pipe 10 and a second gas injection pipe 11, the surface of the sealing door 6 is provided with a liquid discharge pipe 12, the tank body 1 is communicated with the pressure storage tank 2 through the exhaust pipe 8, the surface of the exhaust pipe 8 is provided with a three-way valve 21, and the three-way valve 21 is communicated with the tank body 1 through the circulating pipe 9.

The first gas injection pipe 10 is communicated with the gas bag 5 in the tank body 1, the lifting false bottom 4 is fixedly installed at the top of the gas bag 5, the lifting false bottom 4 is in sliding connection with the inner wall of the tank body 1, a sealing ring is arranged on the contact surface of the lifting false bottom 4 and the inner wall of the tank body 1, the gas bag 5 expands to drive the lifting false bottom 4 to move up and down, when the lifting false bottom moves upwards to be close to the extrusion plate 3, grapes with skins are extruded and burst, grape juice flows out, and mixing is promoted.

It should be noted that the bottom of the filter 18 is closed, the upper surface is open, when the lifting false bottom 4 is lifted, the lifting false bottom is tightly attached to the bottom of the filter 18 and pushes the filter 18 upwards, grapes at the lower part of the extrusion plate 3 cannot pass through the first filter screen 19 and enter the filter 18, and even if crushed grape particles or fruit peels enter the upper space of the extrusion plate 3, the grape particles and fruit peels flow with water flow in the processes that the lifting false bottom 4 is lowered and the mixed liquid flows downwards, and can flow back to the lower part of the extrusion plate 3 through the upper opening of the filter 18 and the first filter screen 19.

The liquid spraying assembly comprises a fixed partition plate 13, a flow guide pipe 14, a rotating plate 15, a spring 16 and a control hand wheel 17, the fixed partition plate 13 is fixedly connected with the inner wall of the tank body 1, the flow guide pipe 14 is rotatably installed in a central hole of the fixed partition plate 13, the rotating plate 15 is fixedly installed on the surface of the flow guide pipe 14, the lower surface of the rotating plate 15 is tightly attached to the upper surface of the fixed partition plate 13, perforations are formed in the upper surfaces of the rotating plate 15 and the fixed partition plate 13, the control hand wheel 17 is rotatably installed at the top end of the tank body 1, the bottom end of the control hand wheel 17 is fixedly connected with the flow guide pipe 14, a scale ring 22 is fixedly connected to the top of the tank body 1, the scale ring 22 is arranged around the control hand wheel 17, the rotating plate 15 rotates for a certain angle, the perforations on the surfaces of the fixed partition plate 13 and the rotating plate 15 are aligned or overlapped to change the size of an opening at the perforations, and the flow can be controlled.

The lifting false bottom 4 is arranged in the fermentation tank, the lifting false bottom 4 is lifted up to crush grape peel and promote mixing, the liquid level of the fermentation mixture can be raised, the mixture liquid is guided into the upper part of the fixed partition plate 13 from the guide pipe 14, the fermentation liquid on the upper part of the fixed partition plate 13 slowly flows downwards through the through hole to increase contact with air and promote aerobic fermentation, the carbon dioxide in the upper space of the tank body 1 is extruded into the pressure storage tank 2 by the rising of the liquid level to realize the collection and pressurization storage of the carbon dioxide, when the lifting false bottom 4 falls, the pressure in the tank body 1 is reduced, air can be pumped in from the second air injection pipe 11, the air is guided in from the bottom of the mixture liquid and floats to the upper space of the tank body 1, the process increases the oxygen required by fermentation and increases the contact time with the oxygen, the aerobic fermentation is facilitated, the air is not supplied in the tank body 1 any more, and the anaerobic fermentation is facilitated to be controlled, thereby realizing the effects of improving the fermentation speed and controlling the fermentation.

In this embodiment, through setting up stripper plate 3 and filter 18, firstly, provide backflow channel for the big particulate matter on 3 upper portions of extrusion board that the extrusion grape process flows in, make it can follow first filter screen 19 and flow back to 3 lower parts of stripper plate, stripper plate 3 plays and filters and broken effect, secondly, first filter screen 19 shelters from at 12 oral areas of fluid-discharge tube, the separation of the dregs and liquid of being convenient for, discharge grape vinegar, the setting of 4 upper surfaces of false end of lift and 3 all slopes of stripper plate, and the false end of lift 4 can reciprocate the position, be convenient for arrange sediment and flowing back, filter 18's movable design is difficult for blockking up.

Through setting up storage pressure jar 2, the carbon dioxide storage that the fermentation process produced is in storage pressure jar 2, storage pressure jar 2 is from circulating pipe 9 to jar body 1 gas injection, not only be favorable to accelerating the row vinegar of fluid-discharge tube 12, and can realize the pressure of the control jar body 1, storage pressure jar 2 is followed second gas injection pipe 11 and is filled gas to jar body 1, the expansion heat absorption after the carbon dioxide of original compression discharges, in the leading-in mixed liquid again, can take away the temperature that the fermentation mixed liquid fermentation produced, realize radiating effect, it is controllable to make the fermentation temperature, and energy is saved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.