Freeze Dryer For Bird's Nest

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Freeze Dryer For Bird's nest

14. As a preference: the specific operation of said freeze-drying step is to freeze the above mentioned wet bird's nest at 0.5

±

0.2pa absolute vacuum at a temperature of

-

50°C for 5

- 50°C for 5 - 6h.

6h.

-

45°C,

-

40°C and

-35

35°C for 2

-for

3h, respectively

-

30°C, and

-

25°C and

-20

20°C for 1

-for

2h, respectively

-

15°C, and

-

10°C and

-5

5°C for 1

-1.5h

1.5h, dry at 0°C, 5°C and 10°C for 2

-at 0°C, 5°C, and 10°C, respectively.

3h, 15°C, and 20°C for 1 - 1.5h

- 2h

2h, so that the moisture content in the bird's nest is not more than 3%, i.e. freeze-dried bird's nest is obtained.

15. By using the above technical solution, the freeze-drying operation of the wet bird's nest is achieved by freeze-drying at each stage of temperature increase and controlling the freeze-drying time at each freeze-drying temperature so that the water vapor in the bird's nest can escape smoothly.

16. As a preference: said the soaking solution is prepared from ingredients comprising the following weight percentages: carotene 3

-5

5 %, pectin 1

-3

3 %, nicotinic acid 1

-3

3 %, purified water to 100 %.

17. As a preference: pectin is chosen from high ester pectin, carotene is α

-carotene

carotene, β

-carotene

carotene, γ-carotene

-carotene

carotene, preferably β-carotene

-carotene.

carotene.

18. By using the above technical solution, the high ester pectin has better water solubility and can be better dissolved, which is immersed in the bird's nest during soaking and can be wrapped on the surface of the bird's nest during the freeze-drying process to avoid the crystallization of the microsoluble material and then migrate to the surface leading to local shrinkage of the freeze-dried bird's nest and improve the freeze-drying effect.

19. As a preference: the specific operation of said freeze-drying step is: the above-mentioned wet bird's nest is placed at 0.5

±

0.2pa absolute vacuum at

-

50 to

- 50 to

5°C for freezing for 8

- - 15h

15h at 0

-

20°C for 5

-8h

8h, so that the moisture content in the bird's nest is not more than 3%, i.e. freeze-dried bird's nest is obtained.

20. More preferably, the specific operation of said freeze-drying step is: drying the above mentioned wet bird's nest at 0.5

±

0.2pa absolute vacuum at a temperature of

-

50 to

- 50 to

5°C at 10°C/step or 5°C/step at a temperature rise rate of 8

- 15h

15h at 0

-

20°C, drying at 10°C/time or 5°C/time in steps of 5

-for 8h.

8h so that the moisture content in the bird's nest is not greater than 3%, i.e. freeze-dried bird's nest is obtained.

21. More preferably, the specific operation of said freeze-drying step is to dry the above-wet bird's nest at 0.5

±

0.2pa absolute vacuum at a temperature of

-

50 to

- 50 to

5°C, stepwise at a rate of 5°C/step to freeze at 8

- - 15h

15h at 0

-20°C

20°C, stepwise drying at 5°C/step at 5°C/step for 5

at 0 - 20°C for 5 - 8h.

8h, so that the moisture content in the bird's nest is not greater than 3%, i.e. freeze-dried bird's nest is obtained.

22. As a preference: the specific operation of said freeze-drying step is to dry the above mentioned wet bird's nest at 0.5

±

0.2pa absolute vacuum at a temperature of

-

50°C for 2

-3h

3h.

-

45°C,

-

40°C and

-35

35°C for 1

-for

2h, respectively

-

30°C, and

-

25°C and

-20

20°C for 0.5

-for

1h.

-

15°C, and

-

10°C and

-5

5°C for 0.5

-1h

1h, dry at 0°C, 5°C and 10°C for 1

-at 0°C, 5°C, and 10°C, respectively.

2h, 15°C, and 20°C for 1 - 2h

- 2h

2h, so that the moisture content in the bird's nest is not greater than 3%, i.e. freeze-dried bird's nest is obtained.

23. By using the above technical solution, by adding appropriate amounts of carotene, pectin and nicotinic acid to the purified water, it is possible to relatively shorten the freeze-drying time while ensuring the freeze-drying effect.

24. In a second aspect, the present technology provides a freeze-dried bird's nest obtained by the processing process described in any of the above, the

The method of consumption is: using 85

-100

100°C water for 3

- 8min

8min and ready for consumption.

25. By using the above technical solution, the fresh bird's nest is processed by the process of the present technology to form a freeze-dried bird's nest, which can be directly brewed in hot water for about 5min when consumed, making it more convenient to consume.

26. In summary, the present technology includes at least one of the following beneficial technical effects: 1. the freeze-dried bird's nest processed by the present technology can be consumed by soaking in hot water for about 5 min before consumption, which is convenient for consumption; 2. the freeze-dried bird's nest processed by the processing technology of the present technology has a better freeze-drying effect; the content of nitrite in the freeze-dried bird's nest is less than 30 mg/kg, the protein content can reach up to 49.19%, the total amino acid The freeze-dried bird's nest processed by the process of the present technology has good quality; the appearance of the freeze-dried bird's nest has a filamentous structure, clear texture, translucent color and slightly yellowish; the taste is slightly fishy, delicate and smooth, soft and elastic, which is a bird's nest of good quality.

Specific implementation

27. The following is a further detailed description of the present technology in conjunction with the specifics.

28. The raw materials and chemical substances used in this technology are commercially available products unless otherwise specified, specifically: bird's nest selected from Malaysia or Indonesia, type of bird's nest; pectin selected from Shandong Zhenghong Biotechnology's food-grade high ester pectin with 99% effective substance content; carotene and nicotinic acid are food-grade commercially available products.

 After soaking, the fresh bird's nests were torn open according to the pattern and filtered 3 times with purified water to remove most of the down hairs from the fresh bird's nests.

±

The nests are then cooled to 23 ± 2°C to obtain wet bird's nests; freeze-dried: the wet bird's nests are molded and dried at 0.5

±

0.2pa absolute vacuum at

-50°C for 5h.

50°C for 5h.

-50°C for 5hand

40°C for 6hand

-

30°C and

- 20

20°C for 3h, respectively

-

10°C and

-5°C for 1.5h, 0°C and 10°C for 3h, 15°C and 20°C for 2h.

5°C for 1.5h respectively, dried at 0°C and 10°C for 3h respectively, and dried at 15°C and 20°C for 2h respectively, so that the moisture content in the bird's nest was 3%, i.e. freeze-dried bird's nest was obtained.

30. The freeze-dried bird's nest of Example 2 is obtained by processing in the following steps: de-mixing: as in Example 1; cleaning, soaking, and dehydration: as in Example 1; steaming: as in Example 1; freeze-drying: the above-wet bird's nest is molded and dried at 0.5

±

0.5 ± 0.2pa absolute vacuum at

-50

50°C for 5h.

-

45°C,

- 45°C

40°C and

-

35°C for 2h, respectively.

-

30°C and

-20°C for 1.5h and -30°C for 2h.

1.5h at 20°C, respectively

-

15°C and

-15°C and

5°C for 1.5h respectively, dried at 0°C, 5°C, and 10°C for 2h respectively, and dried at 20°C for 2h so that the moisture content in the bird's nest was 3%, i.e. freeze-dried bird's nest was obtained.

Parameter:

Model	KFD-1	KFD-2	KFD-5	KFD-6	KFD-8	KFD-10
Capacity (Kg/Batch)	10	20	50	60	80	100
Shelf Area (㎡)	1.1	2	5	6	8	10
Shelf Size (Mm)	500*400	700*500	800*895	950*800	1000*800	1190*800
Shelf Quantity (Layer)	5+1	6+1	7+1	8+1	10+1	11+1
Shelf Temperature (℃)	-60 to +70
Water Catcher Temper (℃)	-65±5
Max Catch Water（Kg）	15	30	75	90	120	150
Ultimate Vacuum	1	1	1	2	2	2
Electricity（Kw）	12	16	22	34	34	41
Size（Mm）	2200*1000*2000	2500*1000*2300	2200*1200*2400	3500*1400*2430	3500*1400*2430	4540*1400*2450
Weight（Kg）	1500	2000	2500	3000	3500	3800

Pre-sale:

* As soon as we get your inquiry, we will always reply to your email on time and try our best to recommend you the most suitable freeze dryer. Detailed tech info will also be provided for you.

* We can do sample tests for customers.

After-sale:

* If possible, please do come to our factory and we will teach workers the whole process of freeze-drying. The most appropriate time needed for freeze-drying will be tested by us.

* We will keep in touch with you, to make sure every part of the freeze dryer works well. One-year warranty, free online service for abroad customers.

Workshop:

Exhibition:

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