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Preparation method of freeze-dried ginkgo powder

A technology of freeze-dried powder and ginkgo, applied in the field of agricultural products and food processing, can solve the problems of short storage time, high energy consumption, loss of nutrients, etc., and achieve the effects of high nutrients, low energy consumption and long-term storage.

Inactive Publication Date: 2015-03-04
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention does not remove toxic substances such as oils and fats during the processing process, and the processed products are still toxic. In addition, this invention uses conventional cooking, which not only consumes high energy, but also easily causes the loss of nutrients, and the storage time is not long.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Soak the broken ginkgo in water for 24 hours, then take it out and drain;

[0020] 2) The drained ginkgo fruit stays in the microwave heating line with a microwave power of 0.6KW for 5 minutes for microwave ripening;

[0021] 3) The ripe ginkgo is shelled and capsuled, then crushed, extruded into pieces, and degreased with food-grade n-hexane at a temperature of 95°C for 60 seconds;

[0022] 4) The degreased ginkgo fruit is pre-frozen at -40°C for 1 hour, and then freeze-dried at elevated temperature. The freeze-drying process is as follows: 5 minutes at -40°C, 10 minutes at -30°C, 2 hours at -26°C, - 10 minutes at 20°C, 5 minutes at -10°C, 5 minutes at 0°C, 10 minutes at 10°C, 10 minutes at 20°C, 30 minutes at 30°C;

[0023] 5) The freeze-dried ginkgo is ground into 80-mesh powder to obtain freeze-dried ginkgo powder.

Embodiment 2

[0025] 1) Soak the broken ginkgo in water for 20 hours, then take it out and drain;

[0026] 2) The drained ginkgo is treated with a microwave power of 1KW for 10 minutes;

[0027] 3) The mature ginkgo is shelled and capsuled, then crushed, extruded into pieces, and degreased with food-grade n-hexane at a temperature of 90°C for 120 seconds;

[0028] 4) The degreased ginkgo fruit is pre-frozen at -40°C for 1 hour, and then freeze-dried at elevated temperature. The freeze-drying process is as follows: 5 minutes at -40°C, 10 minutes at -30°C, 2 hours at -26°C, - 10 minutes at 20°C, 5 minutes at -10°C, 5 minutes at 0°C, 10 minutes at 10°C, 10 minutes at 20°C, 30 minutes at 30°C;

[0029] 5) The freeze-dried ginkgo is ground into 70-mesh powder to obtain freeze-dried ginkgo powder.

Embodiment 3

[0031] 1) Soak the broken ginkgo in water for 30 hours, then take it out and drain;

[0032] 2) The drained ginkgo is treated with a microwave power of 0.8KW for 3 minutes;

[0033] 3) The mature ginkgo is shelled and capsuled, then crushed, extruded into pieces, and degreased with food-grade n-hexane at a temperature of 100°C for 30 seconds;

[0034] 4) The degreased ginkgo fruit is pre-frozen at -40°C for 1 hour, and then freeze-dried at elevated temperature. The freeze-drying process is as follows: 5 minutes at -40°C, 10 minutes at -30°C, 2 hours at -26°C, - 10 minutes at 20°C, 5 minutes at -10°C, 5 minutes at 0°C, 10 minutes at 10°C, 10 minutes at 20°C, 30 minutes at 30°C;

[0035] 5) The freeze-dried ginkgo is ground into 60-mesh powder to obtain freeze-dried ginkgo powder.

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PUM

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Abstract

The invention discloses a preparation method of freeze-dried ginkgo powder, belonging to the technical field of agricultural product and food processing. The preparation method comprises the following steps: soaking broken ginkgoes in clear water, taking out, and draining; performing microwave curing on the drained ginkgoes; removing shells and seeds from the cured gingkoes, grinding, extruding to form slices, and degreasing; pre-freezing the degreased gingkoes, and after pre-freezing, performing heating and freeze-drying; grinding the freeze-dried ginkgoes into powder, namely the freeze-dried ginkgo powder. The freeze-dried ginkgo powder is low in harmful ingredient content, light in weight, easy to carry and transport, relatively concentrated and relatively rich in nutrition.

Description

technical field [0001] The invention belongs to the technical field of agricultural products and food processing, and in particular relates to a preparation method of ginkgo freeze-dried powder. Background technique [0002] Ginkgo biloba, also known as ginkgo, is a commonly used food. my country is the country with the largest output of ginkgo in the world. Ginkgo fruit is rich in nutrition and contains a large amount of beneficial ingredients, which have the effects of restraining the lungs, relieving asthma, nourishing yin and nourishing yang, and prolonging life. [0003] Our country folks have the habit of eating ginkgo since ancient times. But ginkgo is slightly toxic, so you can't eat too much at one time; at the same time, it is not easy to eat because it is not easy to remove after cold. The Chinese invention patent with the publication number CN101023801A provides a processing method of ginkgo slices, which specifically includes boiling the ginkgo to obtain ripe ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L1/36A23L25/00
CPCA23L25/30A23P10/40
Inventor 王耀翔赖红武平丽娟
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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