Physical fresh keeping method of lentinus edodes

A fresh-keeping method and shiitake mushroom technology, which is applied in the fields of fruit and vegetable fresh-keeping, food science, food preservation, etc., can solve the problems of high investment cost of modified atmosphere fresh-keeping equipment, cumbersome fresh-keeping operation of coating film, and harm to human health, so as to reduce the hardness of mushroom body Decrease, inhibit the growth of microorganisms, and reduce the effect of decay

Inactive Publication Date: 2017-02-01
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the investment cost of modified atmosphere fresh-keeping equipment is high, and the radiation fresh-keeping is limited by the radiation source, which is inconvenient to be applied in the production area. facing severe challenges

Method used

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  • Physical fresh keeping method of lentinus edodes
  • Physical fresh keeping method of lentinus edodes
  • Physical fresh keeping method of lentinus edodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A physical fresh-keeping method of shiitake mushrooms, carried out according to the following steps:

[0030] (1) Raw material selection and suitable dehydration treatment: choose shiitake mushrooms that are freshly harvested (moisture content is 90.2%), the mushroom body is complete, the size is basically the same, the color is yellowish brown, the mushroom cap has not been opened, no pests and diseases, and no mechanical damage. Place in a low-pressure drying oven (setting temperature is 45° C., pressure is 0.010 MPa-0.015 MPa), and perform dehydration treatment for 17 minutes. After treatment, the moisture content of the shiitake mushrooms is 83.4%.

[0031] (2) Decompression pretreatment: place the shiitake mushrooms after dehydration treatment in a decompression device, and treat them for 8 hours under the condition of a pressure of 0.030 MPa; the ambient temperature of the decompression pretreatment is 0°C-2°C.

[0032] (3) Packaging and storage: After decompressi...

Embodiment 2

[0043] A physical fresh-keeping method of shiitake mushrooms, carried out according to the following steps:

[0044] (1) Raw material selection and suitable dehydration treatment: choose shiitake mushrooms that are freshly harvested (moisture content is 91.3%), the mushroom body is complete, the size is basically the same, the color is yellowish brown, the mushroom cap has not been opened, no pests and diseases, and no mechanical damage. Place it in a low-pressure drying oven (setting temperature is 47° C., pressure is 0.015 MPa-0.020 MPa), and carry out dehydration treatment for 20 minutes. The water content of the shiitake mushroom after treatment is 84.2%.

[0045](2) Decompression pretreatment: place the shiitake mushrooms after dehydration treatment in a decompression device, and treat them for 9 hours under the condition of a pressure of 0.035 MPa; the ambient temperature of the decompression pretreatment is 0°C-2°C.

[0046] (3) Packaging and storage: After decompressio...

Embodiment 3

[0049] A physical fresh-keeping method of shiitake mushrooms, carried out according to the following steps:

[0050] (1) Raw material selection and suitable dehydration treatment: choose shiitake mushrooms that are freshly harvested (moisture content is 89.5%), the mushroom body is complete, the size is basically the same, the color is yellowish brown, the mushroom cap has not been opened, no pests and diseases, and no mechanical damage. Place it in a low-pressure drying oven (setting temperature is 46° C., pressure is 0.015 MPa-0.020 MPa), and carry out dehydration treatment for 15 minutes, and the water content of the shiitake mushroom after treatment is 82.9%.

[0051] (2) Decompression pretreatment: place the shiitake mushrooms after dehydration treatment in a decompression device, and treat them for 8.5 hours under the condition of a pressure of 0.032 MPa; the ambient temperature of the decompression pretreatment is 0°C-2°C.

[0052] (3) Packaging and storage: After decom...

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Abstract

The invention relates to the technical field of fresh keeping for picked agricultural products, in particular to a physical fresh keeping method of lentinus edodes. The physical fresh keeping method comprises the following steps of enabling fresh lentinus edodes to be subjected to dehydration treatment, then performing pressure reduction treatment under the condition of pressure being 0.030-0.035MPa, and finally storing the treated lentinus edodes into thin film bags until a storage period is finished. Compared with a conventional low-temperature fresh keeping method, the physical fresh keeping method disclosed by the invention has the advantages that the storage period can be prolonged to 42 days or above from 28 days, a chemical fresh keeping agent is not used in the whole fresh keeping process of the lentinus edodes in the physical fresh keeping method, the fresh keeping effects are good, and the physical fresh keeping method is a green safe new physical storage and fresh keeping method.

Description

technical field [0001] The invention relates to the technical field of preservation of agricultural products after picking, in particular to a physical preservation method of shiitake mushrooms. Background technique [0002] Shiitake mushroom (Lentinus edodes), also known as Xiangtan, thick mushroom, flower mushroom, etc., is the second largest edible mushroom product in the world. The production and export volume of shiitake mushrooms in my country rank first in the world. The moisture content of fresh shiitake mushrooms is generally above 90%. After harvesting, the physiological metabolism is strong, and the respiration is strong. It is easy to open umbrellas, brown, soften, and change flavors, and even viscous, rotten, etc., losing the original color and fragrance. , taste, and shape reduce its nutritional value and commodity value, and the postharvest loss is as high as 20-30%. Therefore, it is of great significance to research and develop effective fresh-keeping techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/02A23B7/005A23B7/00A23B7/04
CPCA23B7/0205A23B7/00A23B7/0053A23B7/04A23V2002/00A23V2300/10
Inventor 周拥军郜海燕陈杭君穆宏磊房祥军韩强
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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