Microorganism culture device and microorganism culture medium comprising the same
A microorganism culture device comprising a porous matrix layer having a basis weight of 40 to 100 g/m 2 and an air permeability of 7 to 24 cm/sec, and at least one layer of a water-soluble polymer layer laminated with the matrix layer.
1. A microorganism culture device, comprising:
a porous matrix layer having a basis weight of 40 to 100 g/m 2 ; air permeability of 7 to 24 cm/sec;
at least one sub-layer of a multilayered water-soluble polymer laminated with the matrix layer; and
at least one type of material selected from the group consisting of a nutrient for microorganism growth, a coloring agent, and a selective agent,
wherein letters are assigned to the sub-layers of the water-soluble polymer layer in alphabetical order beginning with the sub-layer nearest the porous matrix layer, the water-soluble layer comprising two sub-layers, layer A and layer B, wherein layer A comprises a water-soluble polymer and layer B comprises a water-soluble polymer; and
wherein the at least one type of material selected from the group consisting of a nutrient for microorganism growth, a coloring agent, and a selective agent is contained in layer A, layer B, or in layer A and layer B.
2. The microorganism culture device of claim 1 , wherein the porous matrix layer has a surface coating layer of a water-soluble material, the water-soluble material further containing a nutrient for microorganism growth, a salt, or a mixture thereof.
3. The microorganism culture device of claim 1 , wherein at least one nutrient for microorganism growth is contained in the water-soluble polymer layer and/or the porous matrix layer.
4. A sheet-form microorganism culture device, comprising:
a porous matrix layer having a basis weight of 40 to 100 g/m 2 ; air permeability of 7 to 24 cm/sec; and
at least one layer of a water-soluble polymer laminated with the matrix layer,
wherein the device is bonded at the center of an adhesive sheet larger than the device, with the porous matrix layer of the device being an upper layer, and with a transparent film larger than the device covering the device by contacting the porous matrix layer and aligning the center of the transparent film on the device, an area of the transparent film not in contact with the device being bonded to an area of the adhesive sheet not bonded to the device; and
at least one type of material selected from the group consisting of a nutrient for microorganism growth, a coloring agent, and a selective agent.
5. The sheet-form microorganism culture device of claim 4 , wherein at least one nutrient for microorganism growth is contained in the water-soluble polymer layer and/or the porous matrix layer.
6. The microorganism culture device of claim 1 , further comprising a device wherein letters are assigned to the sub-layers of the water-soluble polymer layer in alphabetical order beginning with the sub-layer nearest the porous matrix layer, the water-soluble layer comprising three sub-layers, layers A, B, and C, wherein layer A and layer B comprises a water-soluble polymer and layer C comprises a water-soluble polymer; and
wherein the at least one type of material selected from the group consisting of a nutrient for microorganism growth, a coloring agent, and a selective agent is contained in layer A and/or layer B.