Precise filtration processing technology of green plum juice

Abstract

The invention discloses a precise filtration processing technology of green plum juice. According to the technical scheme, the method comprises the following process steps: (1) roller impurity removal: removing impurities from green plums through a rotary screen and sprayed purified water; (2) performing double cleaning: sequentially performing high-pressure bubbling cleaning and brush cleaning to realize fine cleaning of the green plums; (3) precooking and peeling: precooking the green plums, cooling, and peeling and denucleating by a denucleating machine to obtain green plum primary pulp; (4) performing pulping: injecting the green plum primary pulp obtained in the step (3) into a pulping machine, and performing pulping to achieve pulp-residue separation so as to obtain green plum juice; (5) enzymolysis: heating the green plum primary pulp to about 50-60 DEG C, adding a pectinase enzyme preparation, and fully and uniformly stirring for full enzymolysis; and (6) filtering: firstly filtering large-particle impurities and crude fibers by using a filter screen, and then finely filtering by using a disc separator to obtain the green plum juice. According to the scheme provided by the invention, pure and clear green plum juice can be obtained through sufficient filtration.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, and in particular to a precise filtering process for green plum juice. Background Art

[0002] Green plums are rich in nutrients and are known for their sour taste. The flesh contains a variety of vitamins, amino acids, citric acid, malic acid, tartaric acid, and mineral elements such as potassium, calcium, and iron, and is a strongly alkaline physiological fruit. When making most green plum products such as green plum paste and green plum powder, the green plums need to be washed and pulped to make green plum juice. The existing green plum juice processing technology has the problems of incomplete washing, low pulping rate, and insufficient filtration. Summary of the invention

[0003] In view of the shortcomings of the prior art, the main purpose of the present invention is to provide a green plum juice precision filtration processing technology that can fully filter and obtain pure green plum juice.

[0004] To achieve the above object, the present invention provides the following technical solution: a green plum juice precision filtration processing technology, comprising the following process steps: (1) Drum impurity removal: Green plums are removed by rotating screens and spraying pure water; (2) Double cleaning: high-pressure bubbling cleaning and brush cleaning are used to achieve green plum cleaning; (3) Pre-cooking and peeling: pre-cook the green plums, cool them down, and then use a pitting machine to peel and pit them to obtain green plum puree; (4) beating: injecting the green plum pulp obtained in step (3) into a beating machine for beating to separate the pulp from the residue and obtain green plum juice; (5) Enzymatic hydrolysis: Heat the green plum puree to about 50-60°C, add pectinase preparation and stir well to achieve full enzymatic hydrolysis; (6) Filtration: First use a filter to filter out large particles of impurities and coarse fibers, and then use a disc separator to filter finely to obtain green plum juice.

[0005] Preferably, the enzymatic hydrolysis time in step (5) is 60 to 120 minutes.

[0006] Preferably, the mesh size of the rotary screen in step (1) is about 10 mm.

[0007] Preferably, the filter screen in step (6) is a 60-mesh filter screen.

[0008] Preferably, the rotation speed of the disc separator during fine filtration in step (6) is 12000-16000 r / min.

[0009] The present invention has the following advantages over the prior art. The present invention can thoroughly remove impurities and clean green plums through three cleaning processes of drum impurity removal, bubbling cleaning and brush cleaning. A high-speed pulping machine can be used to obtain fine green plum pulp. The green plum raw material is also filtered twice through a screen and a disc separator to obtain high-quality green plum juice. The green plum raw material is required to be large, thick, without scars, without rot and deterioration, and the core is hard and mature at 50% to 60%. The selected green plums enter the rotating screen from the feed inlet and are continuously turned over. When turning over, pure water is sprayed on the top of the screen to clean the impurities and leaves in the green plums, thereby achieving a preliminary screening and cleaning. During bubbling cleaning, the green plums enter the secondary cleaning, and high-pressure gas is flushed into the water to make the green plums enter the surfing cleaning to remove surface stains. During brush cleaning, the green plums enter the third cleaning, and the green plums are turned over on the 360-degree rotating brush, so as to clean without dead angles.

[0010] After peeling and core removal, the cleaned green plums are sent to the core remover to remove the hard core and skin inside, so as to obtain about 85% of green plum puree. After the puree enters the high-speed pulping machine, a more delicate puree comes out, so as to achieve pulp-residue separation and reach a juice yield of 80%~90%. In this scheme, the green plums are thoroughly cleaned and the juice yield is high, and the product quality and production efficiency are better than the existing processing technology. Heat the green plum puree to about 50~60 degrees, add pectinase enzyme preparation and stir well, and dehydrolyze for about 60~120 minutes. When filtering, first use a 60-mesh filter to filter large particles of impurities and coarse fibers, and then enter the disc separator for fine filtration to obtain pure green plum juice. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The present invention is a process flow chart of a green plum juice precision filtration processing technology. Implementation

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] like Figure 1 As shown, a green plum juice precision filtration processing technology includes the following process steps: (1) Drum impurity removal: Green plums are removed by rotating screens and spraying pure water; (2) Double cleaning: high-pressure bubbling cleaning and brush cleaning are used to achieve green plum cleaning; (3) Pre-cooking and peeling: pre-cook the green plums, cool them down, and then use a pitting machine to peel and pit them to obtain green plum puree; (4) beating: injecting the green plum pulp obtained in step (3) into a beating machine for beating to separate the pulp from the residue and obtain green plum juice; (5) Enzymatic hydrolysis: Heat the green plum puree to about 50-60°C, add pectinase preparation and stir well to achieve full enzymatic hydrolysis; (6) Filtration: First use a filter to filter out large particles of impurities and coarse fibers, and then use a disc separator to filter finely to obtain green plum juice.

[0014] The present invention provides a green plum juice precision filtration processing technology, which can thoroughly remove impurities and clean green plums through three cleaning processes of drum impurity removal, bubbling cleaning and brush cleaning. A high-speed pulping machine can be used to obtain fine green plum pulp, and secondary filtration is performed through a screen and a disc separator to obtain high-quality green plum juice. The green plum raw material is required to be large, thick, without scars, rotten or deteriorated, with a hard core and a maturity of 50% to 60%. The selected green plums enter the rotating screen from the feed inlet and are continuously turned over. When turning over, pure water is sprayed on the top of the screen to clean the impurities and leaves in the green plums, thereby achieving a preliminary screening and cleaning. During bubbling cleaning, the green plums enter the secondary cleaning, and high-pressure gas is flushed into the water to make the green plums enter the surfing cleaning to remove surface stains. During brush cleaning, the green plums enter the third cleaning, and the green plums are turned over on the 360° rotating brush, and there is no dead angle cleaning.

[0015] After peeling and core removal, the cleaned green plums are sent to the core remover to remove the hard core and skin inside, so as to obtain about 85% of green plum puree. After the puree enters the high-speed pulping machine, a more delicate puree comes out, so as to achieve pulp-residue separation and reach a juice yield of 80%~90%. In this scheme, the green plums are thoroughly cleaned and the juice yield is high, and the product quality and production efficiency are better than the existing processing technology. Heat the green plum puree to about 50~60 degrees, add pectinase enzyme preparation and stir well, and dehydrolyze for about 60~120 minutes. When filtering, first use a 60-mesh filter to filter large particles of impurities and coarse fibers, and then enter the disc separator for fine filtration to obtain pure green plum juice.

[0016] Preferably, the enzymatic hydrolysis time in step (5) is 60 to 120 minutes.

[0017] Preferably, the mesh size of the rotary screen in step (1) is about 10 mm. A mesh size of about 10 mm can effectively remove impurities and leaves while ensuring that the green plums will not fall off.

[0018] Preferably, the filter screen in step (6) is a 60-mesh filter screen.

[0019] Preferably, the rotation speed of the disc separator during fine filtration in step (6) is 12000-16000 r / min. A high rotation speed can achieve a better green plum filtration effect, thereby obtaining pure green plum juice.

[0020] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A green plum juice precision filtration processing technology, characterized in that: The process steps include: (1) Drum impurity removal: Green plums are removed by rotating screens and spraying pure water; (2) Double cleaning: high-pressure bubbling cleaning and brush cleaning are used to achieve green plum cleaning; (3) Pre-cooking and peeling: pre-cook the green plums, cool them down, and then use a pitting machine to remove the skin and pits to obtain green plum puree; (4) beating: injecting the green plum pulp obtained in step (3) into a beating machine for beating to separate the pulp from the residue and obtain green plum juice; (5) Enzymatic hydrolysis: Heat the green plum puree to about 50-60°C, add pectinase preparation and stir well to achieve full enzymatic hydrolysis; (6) Filtration: First use a filter to filter out large particles of impurities and coarse fibers, and then use a disc separator to finely filter to obtain green plum juice.

2. The green plum juice precision filtration process according to claim 1, characterized in that: The enzymatic hydrolysis time in step (5) is 60 to 120 minutes.

3. The green plum juice precision filtration process according to claim 1, characterized in that: The mesh size of the rotary screen in step (1) is about 10 mm.

4. The green plum juice precision filtration process according to claim 1, characterized in that: The filter in step (6) is a 60-mesh filter.

5. The green plum juice precision filtration process according to claim 1, characterized in that: The rotation speed of the disc separator during fine filtration in step (6) is 12000-16000 r / min.

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