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Method for preparing freeze-dried superfine powder of siraitia grosvenorii

A technology of Luo Han Guo and superfine powder, which is applied in the direction of food freezing, fruit and vegetable preservation, and fruit/vegetable preservation through freezing/refrigeration, etc. It can solve the problems of Luo Han Guo surface shrinkage, loss of nutrients, poor shape, etc., to enhance absorption and improve High taste and high production efficiency

Inactive Publication Date: 2016-10-12
陈素云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of hot air drying is low energy consumption, but the disadvantage is serious loss of nutrients, shrinkage of the surface of Luo Han Guo, poor shape, discoloration, etc.
Microwave vacuum drying, the color of the dried product is better than hot air drying, but the loss of nutrients is more serious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing Luo Han Guo freeze-dried superfine powder includes the following steps:

[0028] (1) Choose ripe, disease-free, and rot-free fresh Momordica grosvenoris and wash them with water;

[0029] (2) Control the slice thickness of Momordica grosvenori after step (1) cleaning to 1.5cm;

[0030] (3) Put the sliced ​​Momordica grosvenori in step (2) in a microwave curing machine, and curing at a microwave power of 80Kw and a temperature of 65°C for 5 minutes;

[0031] (4) Put the dried Momordica grosvenori in step (3) into an ultraviolet sterilizer for 20 minutes;

[0032] (5) Put the sterilized Momordica grosvenori in step (4) in a freeze dryer, cool it down, and pre-frozen 6 hours when the temperature drops to -15°C; the time from room temperature to the pre-freezing temperature is 0.5 hours;

[0033] (6) Refreeze the pre-frozen Luo Han Guo in step (5) for 4 hours at a temperature of -25°C and a vacuum of 40 Pa;

[0034] (7) Deeply freeze the Momordica grosvenori afte...

Embodiment 2

[0037] A method for preparing Luo Han Guo freeze-dried superfine powder includes the following steps:

[0038] (1) Choose ripe, disease-free, and rot-free fresh Momordica grosvenoris and wash them with water;

[0039] (2) Control the slice thickness of Momordica grosvenori after step (1) cleaning to 2cm;

[0040] (3) Put the sliced ​​Momordica grosvenori in step (2) in a microwave curing machine, and curing at a microwave power of 60Kw and a temperature of 80°C for 8 minutes;

[0041] (4) Put the dried Momordica grosvenori in step (3) into an ultraviolet sterilizer for 10 minutes;

[0042] (5) Put the sterilized Momordica grosvenori in step (4) in a freeze dryer, cool it down, and pre-froze for 5 hours when the temperature drops to -20°C; the time from room temperature to the pre-frozen temperature is 1 hour;

[0043] (6) Re-freeze the pre-frozen Luo Han Guo in step (5) for 5 hours at a temperature of -26°C and a vacuum of 35 Pa;

[0044] (7) Deep freeze the Momordica grosvenori after ste...

Embodiment 3

[0047] A method for preparing Luo Han Guo freeze-dried superfine powder includes the following steps:

[0048] (1) Choose ripe, disease-free, and rot-free fresh Momordica grosvenoris and wash them with water;

[0049] (2) Control the slice thickness of Momordica grosvenori after step (1) cleaning to 1cm;

[0050] (3) Put the sliced ​​Momordica grosvenori in step (2) in a microwave curing machine, and curing at a microwave power of 100Kw and a temperature of 50°C for 3 minutes;

[0051] (4) Put the dried Momordica grosvenori in step (3) into an ultraviolet sterilizer for 30 minutes;

[0052] (5) Put the sterilized Momordica grosvenori in step (4) in a freeze dryer, cool it down, and pre-frozen 6 hours when it drops to -14°C; the time from room temperature to pre-frozen temperature is 1 hour;

[0053] (6) Re-freeze the pre-frozen Luo Han Guo in step (5) for 3 hours at a temperature of -26°C and a vacuum of 45 Pa;

[0054] (7) Deeply freeze the Momordica grosvenori after step (6) secondary f...

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Abstract

The invention discloses a method for preparing freeze-dried superfine powder of siraitia grosvenorii. The method comprises the following steps: (1) selecting the siraitia grosvenorii; (2) performing dicing; (3) performing microwave fixation; (4) performing ultraviolet disinfection; (5) performing pre-refrigerating; (6) performing refrigerating for the second time; (7) performing deep-refrigerating; and (8) performing superfine comminution. Compared with the prior art, the method disclosed by the invention has the advantages that the activity of enzymes such as polyphenol oxidase in the siraitia grosvenorii is restrained by microwave fixation, and then sterilization and disinfection are performed with ultraviolet rays, so that the storage life of the freeze-dried superfine powder of the siraitia grosvenorii is effectively prolonged, and safe and hygienic use of the freeze-dried superfine powder is guaranteed; a vacuum freezing sublimation drying technology is adopted, so that separation of peel and flesh, caused by dryness of moisture is avoided, and besides, the color, the fragrance, the mouth feel, the nutrient components and the like of the siraitia grosvenorii are well maintained. After the superfine powder is prepared, the utilization rate of the siraitia grosvenorii is greatly increased, absorption is strengthened, the mouth feeling is improved, and the using range is broad.

Description

Technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a method for preparing Luo Han Guo freeze-dried superfine powder. Background technique [0002] Luo Han Guo, the fruit of perennial vines in the Cucurbitaceae family. Also known as Lahanguo, fake bitter gourd, light fruit mussel, Jinbuhuan, Luohanbiao, naked tortoise shell, it is known as "fairy fruit", its leaves are heart-shaped, dioecious, bloom in summer and bear fruit in autumn. Mainly produced in Longjiang Township, Longsheng and Baishou Towns, Yongfu County, Guilin City, Guangxi. Yongfu County and Longsheng County are the hometowns of Momordica grosvenori with a long history of planting. Among them, Yongfu has grown Mangosteen for more than 300 years, and Longsheng County has grown Mangosteen. With a history of more than 200 years, 90% of China's Luo Han Guo is produced in Yongfu County and Longsheng County. Luo Han Guo is a rare local product in Guilin and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L19/00A23B7/00A23B7/015A23B7/04
CPCA23B7/00A23B7/015A23B7/04A23V2002/00A23V2300/20
Inventor 陈素云
Owner 陈素云
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