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
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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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