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Instant mulberry frozen dried fruit and preparation method thereof

A technology of mulberry fruit and dried fruit, applied in the field of ready-to-eat freeze-dried mulberry fruit preparation, which can solve the problems of unguaranteed product safety performance, easy adhesion on the freeze-drying plate, slow drying speed, etc., and achieve good dispersibility, The same taste and the effect of preserving nutrients

Inactive Publication Date: 2015-10-21
广东依诺建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Many functional substances in mulberries, such as proanthocyanidins and most vitamins, are water-soluble substances. When the method of the invention patent CN200610049170 is used for dehydration and desugaring, most of the nutrients will be lost, and the pulp after stirring is due to Containing viscous substances such as pectin, it is very easy to stick to the freeze-drying plate when it is put into the plate for quick freezing, and at the same time, it will slow down the drying speed due to agglomeration
There is no disinfection or sterilization treatment in the whole processing process, and the safety performance of the product cannot be guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 20kg of ripe fresh mulberry fruit, remove sundries, immerse in 100ppm chlorine dioxide aqueous solution for 3min, drain and set aside.

[0022] Put the mulberries into a freeze-drying tray and put them in a freezer below -35°C for 240 min.

[0023] Turn on the refrigerator to make the temperature of the refrigerant in the water trap reach -30~-40°C; during the vacuum freeze-drying process, the temperature of the heating plate is automatically controlled by the computer to increase the temperature, and the heating process of the heating plate is according to the function F=F l +k×(t / t 1 ) 2 carry out, F is the temperature of the heating plate at the time of temperature rise t, t=0~t l , the unit is min; the total time t 1 =1000min, the initial temperature of the heating plate F 1 =30℃, end temperature F 2 =60°C: k=30.

[0024] Put the pre-cooled mulberries into the vacuum freeze dryer, turn on the vacuum pump; when the vacuum degree of the vacuum chamber is eq...

Embodiment 2

[0027] Take 20kg of ripe fresh mulberry fruit, remove sundries, immerse in 50ppm chlorine dioxide aqueous solution for 5min, drain and set aside.

[0028] Put the mulberries into a freeze-drying tray and place them in a freezer below -35°C for 200 min.

[0029] Turn on the refrigerator to make the temperature of the refrigerant in the water trap reach -30~-40°C; during the vacuum freeze-drying process, the temperature of the heating plate is automatically controlled by the computer to increase the temperature, and the heating process of the heating plate is according to the function F=F l +k×(t / t 1 ) 2 carry out, F is the temperature of the heating plate at the time of temperature rise t, t=0~t 1 , the unit is min; the total time t l =1100min, the initial temperature of the heating plate F l =30℃, end temperature F 2 =55°C: k=25.

[0030] Put the pre-cooled mulberry fruit into the vacuum freeze dryer, turn on the vacuum pump; when the vacuum degree of the vacuum chamber ...

Embodiment 3

[0033] Take 20kg of ripe fresh mulberry fruit, remove sundries, immerse in 75ppm chlorine dioxide aqueous solution for 4min, drain and set aside.

[0034] Put the mulberries into a freeze-drying tray and place them in a freezer below -35°C for 180 min.

[0035] Turn on the refrigerator to make the temperature of the refrigerant in the water trap reach -30~-40°C; during the vacuum freeze-drying process, the temperature of the heating plate is automatically controlled by the computer to increase the temperature, and the heating process of the heating plate is according to the function F=F l +k×(t / t 1 ) 2 carry out, F is the temperature of the heating plate at the time of temperature rise t, t=0~t l , the unit is min; the total time t l =1200min, the initial temperature of the heating plate F 1 =34℃, end temperature F 2 =58°C: k=24.

[0036] Put the pre-cooled mulberries into the vacuum freeze dryer and turn on the vacuum pump; when the vacuum degree of the vacuum chamber i...

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PUM

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Abstract

The invention discloses a preparation method for instant mulberry frozen dried fruit. Mulberries serve as a raw material, then fruit picking, residue removing, chlorine dioxide aqueous solution disinfecting, precooling and vacuum freeze drying are carried out on the mulberries, and the mulberries are taken out until the moisture content ranges from 3.0% to 5.0%. In the process of the vacuum freeze drying, the temperature of a heating board is raised and controlled by a computer program, the temperature raising process of the heating board is conducted according to a function, namely F=Fl+k*(t / t1)<2>, the F is the temperature of the heating board after the heating board is heated for the t, the t ranges from 0 to tl, and the unit is min; the total time tl ranges from 1000 min to 1200 min, and the initial temperature F1 of the heating board ranges from 30 DEG C to 35 DEG C, the final temperature F2 ranges from 50 DEG C to 60 DEG C, and the k=(F2-F1). Tin thin paper bags are adopted to pack the mulberry frozen dried fruit, and the shelf life can reach more than 2 years under normal temperature. According to the mulberry frozen dried fruit, nutritional ingredients of the mulberries are kept, the reconstitution property is good, and after reconstitution is conducted, taste of the mulberry frozen dried fruit is equal to taste of fresh fruits, and the mulberry frozen dried fruit can be eaten directly and is suitable for industrial production.

Description

technical field [0001] The invention relates to a preparation method of instant mulberry freeze-dried fruit, specifically refers to preparing a kind of instant mulberry with preserved mulberry nutrients by using the fresh mulberry fruit as a raw material, after cleaning, disinfection, pre-cooling and other pretreatments, and adopting a vacuum freeze-drying method freeze-dried fruit. Background technique [0002] Mulberry, the mature fruit of the mulberry tree, is also called mulberry and mulberry. Farmers like its ripe fresh fruit to eat. It is sweet and juicy, and it is one of the fruits that people often eat. [0003] Mulberries are rich in proanthocyanidins, anthocyanins, vitamin E, vitamin A, riboflavin, black hair and various trace elements. They have immune-boosting effects, can make hair black and shiny, and are good at nourishing yin and blood. , moisturizing dryness, improving eyesight and relieving eye fatigue. [0004] The mulberry peel is thin, with a water con...

Claims

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Application Information

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IPC IPC(8): A23L1/212A23L3/44
CPCA23L3/44A23B7/024A23B7/0441
Inventor 方练方卓榕余以刚
Owner 广东依诺建筑工程有限公司