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A processing method and device for low-toxic ginkgo kernels

A processing device and technology of ginkgo nuts, applied in lighting and heating equipment, non-progressive dryers, drying machines, etc., can solve problems such as excessive ginkgolic acid content, pollution of nutrients, loss, etc.

Active Publication Date: 2021-09-10
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of excessive ginkgo acid content in existing ginkgo kernels, pollution and serious nutritional loss caused by traditional alkali treatment processes, the present invention provides a processing method and device for low-toxicity ginkgo kernels

Method used

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  • A processing method and device for low-toxic ginkgo kernels

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Effect test

Embodiment 1

[0040] ①Set the drying conditions as follows: the drying temperature is 70°C, the wind speed is 10m / s, the relative air humidity is 25%RH in the early stage, and the duration is 30min; the relative air humidity in the middle stage is 10%RH, and the duration is 3h; 5% RH, until the end of drying; ②Remove the shell and red coat of fresh ginkgo, and place it on the drying tray after the temperature and humidity in the drying room are stable; ③Turn on the ultraviolet rays, and the ultraviolet intensity is 0.2W / m 2 , the UV radiation dose is 1kJ / m 2 4. After drying for about 11 hours, the moisture content of the ginkgo is about 11%. 5. When the ginkgo is cooled to room temperature, the content of ginkgolic acid in the low-toxic ginkgo kernel is about 18.98mg / kg, which is about 57.82% lower than that of fresh ginkgo.

Embodiment 2

[0042] ①Set the drying conditions as follows: the drying temperature is 50°C, the wind speed is 20m / s, the relative air humidity is 60%RH in the early stage, and the duration is 60min; the relative air humidity in the middle stage is 25%RH, and the duration is 4h; 5% RH, until the end of drying; ②Remove the shell and red coat of fresh ginkgo, and place it on the drying tray after the temperature and humidity in the drying room are stable; ③Turn on the ultraviolet rays, and the ultraviolet intensity is 0.2W / m 2 , UV exposure is 20kJ / m 2 ; ④ After drying for about 38 hours, the moisture content of the ginkgo is about 11%. Its ginkgolic acid content is about 15.64mg / kg, which is about 65.24% lower than that in fresh ginkgo.

Embodiment 3

[0044] ①Set the drying conditions as follows: the drying temperature is 90°C, the wind speed is 3m / s, the relative humidity of the air in the early stage is 30%RH, and the duration is 15min; the relative air humidity in the middle stage is 15%RH, and the duration is 4h; 5% RH, until the end of drying; ②Remove the shell and red coat of fresh ginkgo, and place it on the drying tray after the temperature and humidity in the drying room are stable; ③Turn on the ultraviolet light, and the ultraviolet intensity is 10W / m 2 , UV exposure is 20kJ / m 2 ; ④ After drying for about 8 hours, the water content of ginkgo is about 11%. Its ginkgolic acid content is about 17.83mg / kg, which is about 60.37% lower than that in fresh ginkgo.

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Abstract

The invention discloses a processing method and device for low-toxic ginkgo kernels, belonging to the technical field of agricultural product processing. The invention relates to a low-toxic ginkgo kernel processing device, which is composed of an air circulation system, a temperature and humidity control system, an ultraviolet irradiation system, and a material drying and weighing system. The invention utilizes ultraviolet radiation to remove the ginkgolic acid in the ginkgo fruit, combines the drying process and the detoxification process, does not require pre-treatment or subsequent treatment, and is simple to operate. The water content of the ginkgo fruit processed by the method of the invention is controlled below 11%, and the content of ginkgolic acid is below 20mg / kg. The device of the invention can precisely control the drying temperature, air velocity, air humidity and ultraviolet irradiation intensity, and has the ability of online detection of moisture content. Ginkgo fruit is a kind of high-starch material. The present invention utilizes the humidity control method of divisional program, which can effectively reduce the crusting phenomenon on the surface, speed up the drying efficiency and improve the product quality.

Description

technical field [0001] The invention belongs to the technical field of agricultural product processing, and in particular relates to a processing method and device for low-toxic ginkgo kernels. Background technique [0002] Ginkgo biloba L. is a perennial deciduous tree belonging to the Ginkgo family and the genus Ginkgo. It is the oldest relict plant among the existing gymnosperms. China is the hometown of ginkgo, and it is also the main producer of ginkgo in the world, accounting for about 70% of the world's output. my country's ginkgo trees are mainly distributed in China's Jiangsu, Shandong, Guangxi, Hubei, Henan and other provinces. Ginkgo is the core part of the ginkgo seed after the fleshy outer testa is removed. Ginkgo fruit is not only fresh and sweet, but also has the functions of astringing the lungs and relieving asthma, eliminating phlegm and relieving asthma, astringing and dehumidifying, antibacterial and sterilizing, etc. It is a famous nut for both medicin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B11/00A23L5/30
CPCA23L5/20A23L5/30A23L25/20
Inventor 白竣文朱明慧蔡健荣卢越田潇瑜
Owner JIANGSU UNIV
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