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Vacuum freeze-dried green coffee beans and processing method thereof

A vacuum freeze-drying and processing method technology, which is applied in green coffee processing, etc., can solve the problems of large external environment influence, affecting commodity value, and long drying time, so as to avoid excessive loss, shorten processing time, and improve processing efficiency.

Active Publication Date: 2016-08-03
SPICE & BEVERAGE RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drying is a very important process of coffee from fresh fruit to commercial beans. The traditional drying method is sun drying, which takes a long time to dry and is greatly affected by the external environment. Product quality is uneven, affecting its commodity value

Method used

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  • Vacuum freeze-dried green coffee beans and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: vacuum freeze-dried green coffee bean processing method of the present invention

[0027] Siphon flotation, pour the picked fresh Robusta coffee fruit into the siphon tank, add clean water, and stir to remove floating fruit, branches, leaves and other sundries, and at the same time remove the dust and sand on the surface of the fresh coffee fruit;

[0028] Drain the water and dry the plump fresh coffee cherries separated by siphon flotation, so as to remove the residual moisture on the surface of the coffee cherries as soon as possible.

[0029] Put the drained fresh coffee cherries into a freezer at -40°C, and freeze them for 4 hours until the center temperature of the fresh coffee cherries is -35°C to -30°C, and then keep them for another 1 to 2 hours, and the pre-freezing is over.

[0030] The pre-frozen fresh coffee fruit is quickly transferred from the freezer to the working chamber of the vacuum freeze dryer, the vacuum degree is controlled at 50Pa, ...

Embodiment 2

[0032] Embodiment 2: vacuum freeze-drying green coffee bean processing method of the present invention

[0033] Siphon flotation, pour the picked fresh Robusta coffee fruit into the siphon tank, add clean water, and stir to remove floating fruit, branches, leaves and other sundries, and at the same time remove the dust and sand on the surface of the fresh coffee fruit;

[0034] Drain the water and dry the plump fresh coffee cherries separated by siphon flotation, so as to remove the residual moisture on the surface of the coffee cherries as soon as possible.

[0035] Put the drained fresh coffee cherries into a freezer at -35°C, freeze for 6 hours, freeze until the temperature of the center of the fresh coffee cherries is -35°C to -30°C, and then maintain it for 1 to 2 hours, and the pre-freezing is over.

[0036] The pre-frozen fresh coffee fruit is quickly transferred from the freezer to the working chamber of the vacuum freeze dryer. The vacuum degree is controlled at 40Pa,...

Embodiment 3

[0038] Embodiment 3: vacuum freeze-drying green coffee bean processing method of the present invention

[0039] Siphon flotation, pour the picked fresh Robusta coffee fruit into the siphon tank, add clean water, and stir to remove floating fruit, branches, leaves and other sundries, and at the same time remove the dust and sand on the surface of the fresh coffee fruit;

[0040] Drain the water and dry the plump fresh coffee cherries separated by siphon flotation, so as to remove the residual moisture on the surface of the coffee cherries as soon as possible.

[0041] Put the drained fresh coffee cherries into a freezer at -30°C, freeze them for 7 hours, freeze until the center temperature of the coffee cherries is -35°C to -30°C, and then maintain them for 1 to 2 hours, and the pre-freezing is over.

[0042] The pre-frozen fresh coffee fruit is quickly transferred from the freezer to the working chamber of the vacuum freeze dryer. The vacuum degree is controlled at 60Pa, the tem...

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Abstract

The invention relates to the field of food preliminary processing and discloses vacuum freeze-dried green coffee beans and a processing method thereof.According to the processing method, fresh coffee fruits are cleaned and drained before being pre-frozen; the fresh coffee fruits are subjected to vacuum freeze-drying at three stages; at the first stage, 30 min is spent, the temperature is raised by gradient to 50-60 DEG C, and constant-temperature drying is carried out for 12.5-14.5 h; at the second stage, 15 min is spent, the temperature is dropped by gradient to 45-55 DEG C, and constant-temperature drying is carried out for 7-9 h; at the third stage, 15 min is spent, the temperature is dropped by gradient to 40-50 DEG C, and constant-temperature drying is carried out for 2-4 h; lastly, the fresh coffee fruits are subjected to shelling and vacuum packaging, and the vacuum freeze-dried green coffee beans are obtained.A peculiar three-stage vacuum freeze-drying process is adopted for preliminary processing of the fresh coffee fruits, the green coffee beans with a good condition and many nutritional substances and flavored active substances are obtained; meanwhile, processing time is shortened in the whole process, and processing efficiency of the coffee preliminary processing industry is improved.

Description

technical field [0001] The invention relates to the field of primary food processing, in particular to a vacuum freeze-dried green coffee bean and a processing method thereof. Background technique [0002] Coffee is a typical tropical beverage crop, widely distributed in tropical and subtropical regions within 25 degrees north and south latitude, and coffee has been grown in more than 80 countries and regions. Coffee has refreshing, diuretic, cardiotonic, anti-oxidant, anti-aging and other effects, and is one of the most popular drinks. my country's coffee planting is mainly distributed in the whole province of Hainan, the southern part of Yunnan Province and the Panzhihua area of ​​Sichuan Province. Hainan Province mainly grows medium-sized coffee (Robusta), and Yunnan and Sichuan provinces mainly grow small-sized coffee (Arabica). The primary processing of coffee mainly adopts two methods, medium-grain coffee is mainly dry-processed, and small-grain coffee is mainly wet-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F5/02
CPCA23F5/02
Inventor 董文江胡荣锁谭乐和赵建平初众宗迎
Owner SPICE & BEVERAGE RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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