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Electron-beam radiation preservation method for pleurotus nebrodensis

A technology of electron beam irradiation and fresh-keeping method is applied in the field of fresh-keeping of Bailing mushroom, which can solve the problems of unsatisfactory effect of shelf-life extension of Bailing mushroom, and achieve the effect of prolonging shelf-life, white color and high moisture content. Effect

Inactive Publication Date: 2011-06-01
SHANGHAI ACAD OF AGRI SCI
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at present, no one uses electron beam irradiation technology for the preservation of Bailing mushroom. The preservation of Bailing mushroom mainly adopts the aforementioned low-temperature preservation, modified atmosphere preservation, chemical preservation, room temperature ozone preservation and gamma ray irradiation preservation methods, And these methods are unsatisfactory to the prolonging effect of the shelf life of rear Bailing mushroom

Method used

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  • Electron-beam radiation preservation method for pleurotus nebrodensis
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  • Electron-beam radiation preservation method for pleurotus nebrodensis

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Effect test

Embodiment 1

[0023] The irradiation preservation of embodiment 1 Bailing mushroom

[0024] Consign the newly picked Bailing mushrooms on the day to the irradiation center, put the Bailing mushrooms packed in plastic wrap and trays in a single layer in the iron box on the conveyor belt, put the mushrooms in the iron box for irradiation, and flatten them. Lay a layer without overlapping, and sequentially pass the irradiation source on a high-speed electron accelerator with a power of 10MeV, select 1.0kGy, 2.0kGy, 3.0kGy, 4.0kGy as the experimental treatment dose, and irradiate 90 mushrooms with each treatment dose. Unirradiated samples served as controls. After irradiation, they were stored in a 4°C cold storage, and samples were taken every three days for testing.

Embodiment 2

[0025] Example 2 Determination of weight loss rate of Bailing mushroom after irradiation

[0026] After irradiation, six mushrooms for each treatment were packaged in three boxes and placed in a box specially used for weight loss measurement. These mushrooms were not used for physiological tests but were only used for weight measurement. The calculation formula for weight loss rate:

[0027] Weight loss rate (%)=[(Wi-Ws) / Wi]×100%

[0028] Wi: initial sample weight

[0029] Ws: the weight of the sample weighed for each sampling

[0030] After the mushrooms are harvested, they are still undergoing respiration to consume their own constituent substances, thus destroying the freshness of the mushrooms, resulting in the gradual aging and deterioration of the edible mushrooms. The study found that the electron irradiation dose of 3.0kGy caused the weight loss rate of the Bailing mushrooms after harvesting. less variation and highest moisture content, such as figure 1 shown.

Embodiment 3

[0031] Example 3 Hardness determination of Bailing mushroom after irradiation

[0032] After sampling for each test, before the physiological parameter detection, the hardness of the mushroom was measured with a physical property analyzer, and the measurement probe was p / 5. Twelve parts of each mushroom were randomly selected for hardness measurement. Six mushrooms were taken from each treatment to obtain a total of 72 hardness values, and the average value was taken as an index to measure the hardness of Bailing mushrooms after irradiation. Mushrooms with better freshness have less damage to their tissue structure and objectively maintain their higher hardness, while mushrooms with damaged structures have reduced hardness, not only smelling but also softening. The results are as follows: figure 2 shown. Example 4 Determination of physiological parameters of Bailing mushroom after irradiation

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Abstract

The invention discloses a technique for applying electron-beam radiation in preservation of harvested pleurotus nebrodensis. In the technique, a high-speed electron accelerator with a power of 10MeV is used as an electron radiation source, a radiation dose of 1 to 10kGy is selected to radiate the harvested pleurotus nebrodensis, and the radiated pleurotus nebrodensis is stored in a low-temperature refrigeration house at a temperature of 4 DEG C and a relative humidity of 75 to 85 percent. The preservation technique solves the problems of pollution, low energy utilization rate, low efficiency, time consumption and the like of other preservation methods, and can prolong the shelf life of the harvested pleurotus nebrodensis by 5 to 7 days.

Description

technical field [0001] The application of the present invention relates to a method for preserving the freshness of Bailing mushrooms, in particular, to irradiating the picked Bailing mushrooms with electron beams, and storing the irradiated Bailing mushrooms in a suitable temperature and humidity environment to remove The method of preserving the freshness of Bailing mushrooms can prolong the shelf life of Bailing mushrooms. Background technique [0002] Bailing Mushroom [Pleurotus nebrodensis (Inzengae) Quél.], also known as Asafoetida Mushroom, is a low-temperature herbaceous fungus. Large fleshy toadstool. Compared with other mushrooms, Bailing Mushroom has higher edible and medicinal value. Its protein content is as high as 14.7%, fat (4.31%), crude fiber (15.4%) and amino acid (10.6%) are higher than other edibles Bacteria contain a variety of healthy minerals, especially fungal polysaccharides, which can enhance human immunity and regulate human physiological balanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/015
CPCY02P60/85
Inventor 邢增涛段占锋
Owner SHANGHAI ACAD OF AGRI SCI
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