Quick-freezing processing method for fresh-keeping of orange slices

A processing method and a technology for citrus petals, which are applied in the processing field of fruit preservation by using quick-freezing technology, can solve the problems of white spots easily generated in canned citrus, easy oxidation of iron cans, short storage time, etc., so as to overcome the problem that the production period of raw materials is too short. , The effect of ensuring safety and hygiene and protecting nutritional quality

Active Publication Date: 2012-07-04
HUNAN AGRI PRODS PROCESSING INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Canned citrus stored in this kind of tin cans are prone to white spots and a metallic taste. The tin cans are easy to oxidize and take up space, and the storage time is relatively short

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of quick-freezing processing method that is used for fresh-keeping of orange segment, comprises the following steps:

[0016] (1) Pretreatment before freezing: select 50kg of fresh and ripe Wenzhou tangerines, blanch them in boiling water for 30 seconds, cool them, peel them and split them into petals, and select orange petals with good petal shape and full tissue for later use;

[0017] (2) Quick-freezing treatment: place the pre-frozen orange segments in a quick-freezing device (available from the market), adjust the quick-freezing temperature to -35°C, adjust the speed of the conveyor belt to control the quick-freezing time for 10 minutes, when the center temperature of the orange segment Discharge when the temperature drops to -18°C;

[0018] (3) Frozen storage: the orange petals after the quick-freezing treatment are packaged, and then stored in a freezer where the temperature is -18°C and the relative humidity is 90%, and the temperature and relative humidi...

Embodiment 2

[0021] A quick-freezing processing method for fresh-keeping orange slices, specifically comprising the following steps:

[0022] (1) Pre-treatment before freezing: select 50kg of fresh and well-ripe tangerines, scald them in boiling water for 32 seconds, peel and split them, and select orange petals with good petal shape and full tissue for later use;

[0023] (2) Quick-freezing treatment: place the pre-frozen orange slices in the quick-freezing device, adjust the quick-freezing temperature to -30°C, adjust the speed of the conveyor belt to control the quick-freezing time to 25 minutes, when the center temperature of the orange slices drops to -20°C material;

[0024] (3) Frozen storage: the orange petals after the quick-freezing treatment are stored in a refrigerator at a temperature of -20° C. and a relative humidity of 80%, and the temperature and relative humidity are kept stable, and the quick-freezing treatment is completed.

[0025] When making citrus juice with the ab...

Embodiment 3

[0027] A quick-freezing processing method for fresh-keeping orange slices, specifically comprising the following steps:

[0028] (1) Pre-treatment before freezing: select 50kg of fresh and well-ripe ponkans, blanch them in boiling water for 32 seconds, peel and split them, and select orange petals with good petal shape and full tissue for later use;

[0029] (2) Quick-freezing treatment: place the pre-frozen orange slices in the quick-freezing device, adjust the quick-freezing temperature to -40°C, adjust the speed of the conveyor belt to control the quick-freezing time to 10 minutes, when the center temperature of the orange slices drops to -16°C material;

[0030] (3) Frozen storage: the orange petals after the quick-freezing treatment are stored in a refrigerator at a temperature of -16° C. and a relative humidity of 95%, to keep a stable temperature and relative humidity, and the quick-freezing treatment is completed.

[0031] When making citrus juice with the above-menti...

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PUM

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Abstract

The invention discloses a quick-freezing processing method used for keeping orange sections fresh. The method comprises the following steps: the organs are sorted firstly, blanched with boiled water, cooled and peeled and divided into a plurality of sections for standby application; the orange sections are put in a quick-freezing device, the central temperature of the orange sections is reduced to a temperature of minus 20 to minus 60 DEG C by adjusting the quick-freezing temperature and the quick-freezing time of the quick-freezing device, and then the orange sections are discharged; and theorange sections after quick-freezing treatment are stored in a refrigerated warehouse under the conditions of a temperature of minus 20 to minus 60 DEG C and a relative humidity of 80 to 95 percent, the temperature and the humidity in the refrigerated warehouse are maintained stable, and the quick-freezing treatment is finished. The quick-freezing processing method has the advantages of high production efficiency, stable product quality, high security, small influence to the flavor and color of the oranges, convenient application and no pollution to the environment.

Description

technical field [0001] The invention relates to a processing method for keeping fruits fresh, in particular to a processing method for using quick-freezing technology to keep fruits fresh. Background technique [0002] Citrus is the largest fruit in the world, and its output reached 108 million tons in 2007. It is the third largest agricultural product in international trade after wheat and corn. In 2007, the planting area of ​​citrus in my country was 1.714 million hectares, ranking first in the world, and the output was 19 million tons, ranking second in the world. my country's citrus is used for processing about 10%, while the world's average level has reached 40%, the United States and Brazil's citrus processing accounted for 84% and 71% of the total output respectively. Canned citrus is the leading product of citrus processing in China, accounting for 60% of the international market, and is the most competitive product of my country's citrus industry in the internation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/04A23B7/045
Inventor 单杨胡子敬李高阳黄志群付复华杨丽何建新邓永燕苏东林
Owner HUNAN AGRI PRODS PROCESSING INST
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