Microbial culture medium powder packaging bag

Abstract

The utility model relates to a microorganism culture medium powder packaging bag in the technical field of microorganism culture media, which comprises culture medium powder, a packaging bag is wrapped on the outer surface of the culture medium powder, the culture medium powder is of a block-shaped structure, the packaging bag is of a water-soluble film structure, the packaging bag is made of water-soluble packaging materials, and the packaging bag is made of plastic. According to the novel premixed culture medium powder package, due to the specific elastic modulus and tensile strength of the PVA water-soluble film material, the novel premixed culture medium powder package has very high mechanical packaging performance and is suitable for various full-automatic packaging machines, the accuracy of powder metering can be improved, after the design is adopted for the culture medium powder, a laboratory technician does not need to open a packaging bag when preparing a culture medium, and the production cost is reduced. According to the method, the culture medium premixed powder packaged by the water-soluble film is directly put into a culture container, and the ultrapure water is added, so that sterilization can be realized, a large amount of repeated labor is avoided, a weighing step is completely not needed, dust flying and weighing waste are prevented, and the respiratory tract health of a laboratory technician is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of microbial culture medium, in particular to a microbial culture medium powder packaging bag. Background Art

[0002] Microbial culture is a recognized research method used in the field of molecular biology to cultivate bacteria and yeast. Culture medium is a mixed nutrient matrix artificially prepared by combining multiple substances according to the needs of microbial growth, which is used to cultivate and separate various microorganisms. The culture medium should contain various nutrients required for microbial growth, including nitrogen source, carbon source, energy, inorganic salts, growth factors and water. Since there are many types of microorganisms and each type of microorganism has different requirements for nutrients, the types and preparation methods of culture medium are also different.

[0003] Since many culture media contain a large number of nutrients, the experimenter needs to weigh them one by one during preparation. This simple repetitive work consumes a lot of time. In order to reduce this repetitive work, premixed culture media powders have appeared on the market in recent years. However, most of them still require weighing the required premixed powder weight each time the culture medium is prepared, and then dissolving and sterilizing it separately. During the weighing process, floating dust will inevitably be generated, which is harmful to the respiratory health of the experimenter.

[0004] Therefore, based on the existing technology, technicians in this field need to develop a new type of premixed culture medium powder to completely eliminate the weighing operation, so as to further simplify the operation of preparing the culture medium; and eliminate any form of contact between the experimenter and the culture medium powder to protect the respiratory health of the experimental members. For this reason, we propose a microbial culture medium powder packaging bag. Utility Model Content

[0005] In view of the above problems, the utility model provides a microbial culture medium powder packaging bag, which has the advantage that when preparing the culture medium, there is no need to open the packaging bag. The culture medium premix powder packaged in the water-soluble film needs to be directly put into the culture container and sterilized by adding ultrapure water.

[0006] The technical solution of the utility model is:

[0007] A microbial culture medium powder packaging bag comprises culture medium powder, the outer surface of the culture medium powder is wrapped with a packaging bag, the culture medium powder adopts a block structure, the packaging bag is a water-soluble film structure, and the material of the packaging bag is a water-soluble packaging material.

[0008] In a further technical solution, the water-soluble film is one or more of PVA polymer or starch film.

[0009] In a further technical solution, the water-soluble film is a PVA material water-soluble film made of PVA material.

[0010] In a further technical solution, the thickness of the water-soluble film of PVA material is 25~75 µm.

[0011] In a further technical solution, the water-soluble film of PVA material is a transparent or translucent structure.

[0012] The beneficial effects of the utility model are:

[0013] The unique elastic modulus and tensile strength of the PVA water-soluble film material used in the new premixed culture medium powder packaging give it high mechanical packaging performance. It is suitable for various fully automatic packaging machines and can improve the accuracy of powder metering. After the culture medium powder adopts this design, the experimenter does not need to open the packaging bag when preparing the culture medium. He only needs to put the culture medium premixed powder packaged in the water-soluble film directly into the culture container and add ultrapure water for sterilization, which avoids a lot of repetitive labor and does not require any weighing steps, preventing dust and weighing waste, protecting the respiratory health of the experimenter, and using environmentally friendly water-soluble film materials instead of difficult-to-handle and difficult-to-degrade packaging materials such as plastic and aluminum foil. It is environmentally friendly and saves the steps of garbage sorting and disposal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0015] Description of reference numerals:

[0016] 1. Culture medium powder; 2. Packaging bag. DETAILED DESCRIPTION

[0017] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings. Example

[0018] like Figure 1 As shown, a microbial culture medium powder packaging bag includes a culture medium powder 1, the outer surface of the culture medium powder 1 is wrapped with a packaging bag 2, the culture medium powder 1 adopts a block structure, the packaging bag 2 is a water-soluble film structure, the material of the packaging bag 2 is a water-soluble packaging material, the water-soluble film is one or more of PVA polymer or starch film, etc. Preferably, the water-soluble film is a PVA material water-soluble film made of PVA material, the thickness of the PVA material water-soluble film is 25~75 µm, and the PVA material water-soluble film is a transparent or translucent structure.

[0019] Preferably, the water content of the PVA water-soluble film is 9% to 15%.

[0020] Preferably, the tensile strength of the PVA water-soluble film is 35-40 MPa.

[0021] Preferably, the elastic modulus of the PVA water-soluble film is 70-130 MPa.

[0022] Preferably, the time for the PVA water-soluble film to dissolve in water is 10 to 40 s.

[0023] The packaging production method of premixed culture medium powder is as follows:

[0024] When packaging the mixed culture medium powder, different proportions of culture medium raw materials can be weighed according to the type of culture medium, and then the culture medium raw materials are added to the mixer for mixing, the water-soluble film is loaded into the vertical powder packaging machine, the unit dose of culture medium powder weight is set, and the packaged premixed culture medium powder is checked for weight;

[0025] The packaging production method of the premixed culture medium powder adopts a heat-sealing production process, and the heat-sealing temperature of the production process is 100~200℃.

[0026] The use of premixed culture medium powder is as follows:

[0027] When preparing the culture medium, take a bag of premixed culture medium powder and put it into the culture container together with the transparent packaging bag without opening the packaging bag. According to the weight of the culture medium powder, add the corresponding volume of ultrapure water and sterilize it directly in a high-temperature and high-pressure steam sterilizer. After sterilization, cool it down and it can be used.

[0028] The above embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A microbial culture medium powder packaging bag, comprising culture medium powder (1), characterized in that: The outer surface of the culture medium powder (1) is wrapped with a packaging bag (2); the culture medium powder (1) has a block structure; the packaging bag (2) has a water-soluble film structure; and the packaging bag (2) is made of a water-soluble packaging material.

2. The microbial culture medium powder packaging bag according to claim 1, characterized in that: The water-soluble film is one or more of PVA polymer or starch film.

3. The microbial culture medium powder packaging bag according to claim 2, characterized in that: The water-soluble film is a PVA material water-soluble film made of PVA material.

4. The microbial culture medium powder packaging bag according to claim 3, characterized in that: The thickness of the PVA material water-soluble film is 25-75 μm.

5. The microbial culture medium powder packaging bag according to claim 3, characterized in that: The PVA material water-soluble film is a transparent or translucent structure.

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