A clarified and concentrated fruit juice preparation method

A technology of concentrated fruit juice and concentrated tank, which is applied in the field of food processing, can solve the problems that the technological process cannot get rid of the operation, cannot reflect the advantages of freezing and concentrating low-temperature dehydration, and accelerates the formation of crystal nuclei to form ice crystals. The effect of less equipment occupation and less equipment

Active Publication Date: 2015-09-09
XINJIANG AGRI UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

This method is a progressive lamellar crystallization method. Due to the limitation of refrigeration methods, concentrated juice can only be produced in small batches. Since the frozen juice is thawed from natural to complete thawing, the water is not separated and removed in the form of ice crystals, and finally needs to be resorted to. Thin-film thermal concentration removes water, which cannot reflect the low-temperature water removal advantage of freeze concentration
[0010] The patent "method and equipment

Method used

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  • A clarified and concentrated fruit juice preparation method
  • A clarified and concentrated fruit juice preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] a. Freeze concentration tank 17 has an inner diameter of 100cm, a tank height of 200cm, and a tank capacity of 1500L. There are multiple heat-conducting plates 4 and 14 welded at intervals of 6cm on the side wall of the tank, wide heat-conducting plates (40cm*200cm) and narrow heat-conducting plates (25cm *200cm) welded alternately, 26 wide and narrow heat conduction plates each, the ratio of the surface area of ​​the heat conduction plate to the side wall area of ​​the tank is 10.76:1; there is a polyurethane insulation layer 16 on the outside, a tank foot 10 on the bottom, and a tank foot 10 on the upper part Observation hole 18;

[0044] B. evacuate the freeze concentration tank by the degassing air inlet 2, so that negative pressure is formed in the tank, and the apricot pulp with 1500kg soluble solids content is 13°Brix sucked into the freeze concentration tank from the feed hole 19, and the apricot pulp is carried out simultaneously outgassing. Dissolve 200g of p...

Embodiment 2

[0054] a. Freeze concentration tank 17 has an inner diameter of 80cm, a tank height of 100cm, and a tank capacity of 500L. A heat conduction plate 4, 14 is welded at an interval of 5.25cm on the side wall of the tank body, a wide heat conduction plate (30cm*100cm) and a narrow heat conduction plate (20cm*100cm ) alternately welded, 24 wide and narrow heat conduction plates each, the ratio of the surface area of ​​the heat conduction plate to the inner wall area of ​​the tank is 9.55:1.

[0055] b. evacuate the freeze concentration tank through the degassing air inlet 2, so that negative pressure is produced in the tank, suck 500kg from the feed hole 19, and the soluble solid content is 23°Brix grape pulp (containing pulp and skin) after crushing seeds), and remove the gas dissolved in the grape juice to avoid oxidative browning in subsequent processing.

[0056] c. Introduce refrigerant with a temperature of -10±1°C into the refrigerant jacket 5, turn on the propeller to stir ...

Embodiment 3

[0065] a. Freeze concentration tank (17) has an inner diameter of 120cm, a tank height of 90cm, and a tank capacity of 1000L. A heat conduction plate (4, 14) is welded at an interval of 6.25cm on the side wall of the tank body, a wide heat conduction plate (50cm*90cm) and a narrow heat conduction plate (30cm*90cm) welded alternately, 30 wide and narrow heat conduction plates each, the ratio of the surface area of ​​the heat conduction plate to the inner wall area of ​​the tank is 12.8:1.

[0066] b. vacuumize the freeze concentration tank through the degassing air inlet (2), so that negative pressure is generated in the tank, and 950 kg of soluble solid content is sucked from the feed hole (19) and the soluble solid content is 13.2 ° Brix broken beating melon pulp.

[0067] c. Introduce refrigerant with a temperature of -9±1°C into the refrigerant jacket (5), turn on the propeller stirring (15), lower the temperature of the melon pulp to -6°C, and promote the formation and grow...

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Abstract

The present invention provides a clarified and concentrated fruit juice preparation method which includes the following steps: fruits are crushed and beat to prepare fruit pulp, the fruit pulp is sent into a freezing and concentrating equipment to conduct suspended crystallization and then conduct gradual layered crystallization until all the fruit pulp is frozen, the fruit flesh and other suspended particles can be effectively blocked in the ice layer with the help of filtering bed constituted by frozen ice particles, and the concentrated juice is separated out and clarified. The preparation method eliminates the necessary processes needed for the production of conventional clarified juice such as juice squeezing, filtrating, clarifying, etc. The preparations of fruit pulp to clarified concentrated juice are all conducted in a single freezing and concentrating device, the preparation occupies less devices, the technology process and operation were simple and convenient, the investment and operating costs are low, and the energy is saved and the consumption is reduced.

Description

technical field [0001] The invention relates to a method for preparing clarified and concentrated fruit juice, in particular to a method for preparing clarified and concentrated fruit juice by a freezing method, which belongs to the technical field of food processing. Background technique [0002] Fruit juice is the fruit juice that is selected, cleaned and squeezed out of fresh fruits. It is rich in vitamins, minerals, carbohydrates and dietary fiber. It is the most nutritious part of the fruit and is easily absorbed by the human body. It is close to For fresh fruit, it is known as "liquid fruit". Fruit juice is the main form of processing and consumption of fruit in developed countries. Fruits are processed into concentrated fruit juice products, the volume and weight are greatly reduced, which can effectively reduce storage and transportation costs, and become the main fruit processing products in international trade. With the improvement of people's living standards y...

Claims

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Application Information

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IPC IPC(8): A23L2/12A23L2/72
CPCA23L2/12A23L2/72
Inventor 冯作山热合曼.艾位郑峰白羽嘉郑万才段继华
Owner XINJIANG AGRI UNIV
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