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A kind of preparation method of raspberry freeze-dried powder

A technology of freeze-dried powder and raspberry, applied in the direction of food science, etc., to achieve the effect of reducing astringency, easy crushing, and convenient storage

Inactive Publication Date: 2016-06-08
黑河市三棵野蓝莓食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, during the crushing and beating process in the raspberry beater, the raspberry seeds are also crushed, and when they enter the product together, they will produce astringent taste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 120kg of fresh wild raspberries, remove fruit pedicles and branches and leaves and other sundries. Turn on the ozone water sterilizer, pass the ozone into the water, wait until the ozone concentration in the water reaches 10ppm, add 120kg of ozone water to the selected fruit, process for 1.2min, filter out the ozone water and pack the fruit into boxes or freeze-drying trays Pre-cool in a freezer below -30°C. When the temperature of the center of the fruit reaches -20°C to -25°C, crush the fruit and continue to pre-cool to -28°C. At the same time, a temperature detector is inserted into 1 to 2 intact fruits to monitor the temperature of the item in real time.

[0030] Turn on the refrigerator to make the temperature of the refrigerant reach -30°C, and set the programmed temperature rise program. Within 2 minutes, the pre-prepared wild raspberry fruit plate is quickly moved into the vacuum freeze-drying equipment and placed on the heating plate, the temperature det...

Embodiment 2

[0035] Take 120kg of fresh wild raspberries, remove fruit pedicles and branches and leaves and other sundries. Turn on the ozone water sterilizer, pass ozone into the water, wait until the ozone concentration in the water reaches 15ppm, add 100kg of ozone water to the selected fruit, process for 1min, filter out the ozone water, put the fruit in a box or put it in a freeze-drying tray Pre-cool in a freezer below -35°C. At the same time, a temperature detector is inserted into 1 to 2 fruits to monitor and control the temperature of the object in real time. Turn on the refrigerator to make the temperature of the refrigerant reach -37°C.

[0036] When the temperature of the fresh wild raspberry fruit drops to -30°C, move it into the vacuum freeze-drying equipment and place it on the heating plate within 2 minutes, connect the temperature detector to the vacuum freeze-drying equipment for real-time temperature monitoring, and turn on the vacuum pump. Heating plate temperature co...

Embodiment 3

[0040] Take 120kg of fresh wild raspberries, remove fruit pedicles and branches and leaves and other sundries. Turn on the ozone water sterilizer, pass the ozone into the water, wait until the ozone concentration in the water reaches 20ppm, add 120kg of ozone water to the selected fruit, process for 1.2min, filter out the ozone water and pack the fruit into boxes or freeze-drying trays Pre-cool in a freezer below -30°C.

[0041] When the temperature of the center of the fruit reaches -20°C to -25°C, crush the fruit and continue to pre-cool to -30°C. At the same time, a temperature detector is inserted into 1 to 2 intact fruits to monitor the temperature of the item in real time.

[0042]Turn on the refrigerator to make the temperature of the refrigerant reach -35°C, and set the programmed temperature rise program. The heating and cooling rate was 2.0 °C / min. Heating plate temperature control program:: based on room temperature of 25°C, reach 60°C after 17.5 minutes, keep wa...

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PUM

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Abstract

The invention discloses a preparation method of raspberry lyophilized powder. The preparation method comprises the steps of with wild raspberry as a raw material, picking, cleaning by ozone water, precooling, crushing the wild raspberry, and drying until the water content is lower than 6.0 percent by adopting programmed warming heat-supplying and vacuum-freeze-drying and analysis drying. Temperatures controlled in a heating process are as follows: the temperature increasing ratio and the temperature reducing ratio are controlled to be (2.0-2.5) DEG C / min; within 20min from the starting time, the temperature of a heating plate is controlled to be increased from a room temperature to 55-60 DEG C, and is kept for 50-60min; then the temperature is reduced to 50-52 DEG C, and is kept for 300-420min; the temperature is increased to 55-57 DEG C and is kept for 180-200min; and the temperature is increased to 60-62 DEG C and is kept for 60-120min. The raspberry lyophilized powder preserves nutrient substances and taste of the fresh wild raspberry, can be directly added in a food as an ingredient; the whole process is suitable for industrialized production.

Description

technical field [0001] The invention relates to raspberry fruit powder, in particular to a preparation method of raspberry freeze-dried powder, belonging to the technical field of freeze-dried powder processing. Background technique [0002] Raspberry is also known as raspberry, Sanyue bubble, Shantouzi, thorn gourd, raspberry, steamed bread spinach, tall pineapple, dragon boat bubble, milk bubble, raspberry, and bubble thorn. Raspberry fruit consists of many small drupes, subglobose or ovoid, 1-1.2 cm in diameter, red, densely pubescent; stone wrinkled. Raspberry is rich in vitamins, SOD, proanthocyanidins and other nutrients. The rich nutrition of raspberry fruit is easily absorbed by the human body, which can promote the absorption of other nutrients, improve metabolism and enhance immunity. [0003] Raspberry is a kind of berry with thin skin and high moisture content, which makes it difficult to keep fresh and transport over long distances, so it is necessary to proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L19/00A23L2/39
CPCA23L2/39A23L19/09
Inventor 张文涛余以刚
Owner 黑河市三棵野蓝莓食品有限公司
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