Quality identification of bacterial pack production line

The

bacteria bag production line is based on the core principles of aseptic operation and precise environmental control. By optimizing the sterilization rate of the sterilization system, the positioning accuracy of the inoculator and the environmental parameters of the culture room, it achieves efficient production of bacteria bags, control of contamination rates and consistency of mycelium growth. It is widely used in fields such as industrial production of edible fungi, cultivation of medicinal fungi, and expansion of laboratory strains. In the edible fungi industry, it is used for automatic filling and sealing of mushroom packages such as shiitake mushrooms and king oyster mushrooms; in the field of medicinal fungi, it meets the needs of sterile inoculation of Ganoderma lucidum and cordyceps fungus packages; in scientific research scenarios, it ensures the environmental traceability of bacterial species expansion. Compared with the traditional production model, the fungus bag production line has the characteristics of high sterilization thoroughness, excellent inoculation accuracy and intelligent environmental control. It is the core equipment for the industrial cultivation of edible fungi.

Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide quality appraisal services for bacterial bag production lines. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for the quality appraisal of bacterial bag production lines.

With the popularization of edible fungi factories, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1. Disputes over performance indicators: the sterilization rate does not meet the standard and the bacteria bag contamination rate exceeds the standard;

2. Material defects: the yield strength of the pressure-resistant steel plate of the sterilization tank is insufficient, and the thermal conductivity of the insulation layer of the culture room;

3, process issues: deviation in dynamic repeatability of inoculation needles, environmental sensor calibration failure;

4, contract performance dispute: key modules (such as imported sterilization valves, Swiss Mettler humidity sensors) are inconsistent with the technical agreement.

0 Such cases need to pass sterilization effect verification, microbial detection and equipment dynamic accuracy testing to clarify the ownership of quality responsibility.

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1. Equipment appearance inspection

Check whether there are any defects such as damage and deformation on the outside of the equipment.

2. Functional test

Run the device to test whether its components are working properly.

3. Hopper crushing capacity test

0 measures the crushing amount of the equipment hopper within a certain period of time.

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24. Batching accuracy test

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4Check whether the equipment batching system can accurately weigh and mix raw materials.

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65. Bagging quality inspection

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8Check the size, weight and sealing of the bacteria bag.

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06. Sterilization effect detection

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2 simulates the sterilization process to check whether the equipment can effectively kill microorganisms.

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The applicant, a mushroom industry company, signed a "Fully Automatic Mushroom Pack Production Line Purchase Contract" with an equipment manufacturer, the defendant, and agreed that the contamination rate would be ≤0.1%. After being put into production, the bacterial bag contamination rate exceeded 3%, and the manufacturer argued that it was caused by the operator's failure to clean properly.

Identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information of the "bacteria bag production line", contract technical agreements, on-site inspection case materials and other data, and made the following quality analysis opinions:

The temperature distribution inside the sterilization tank of the bacterial bag production line involved in the case was uneven (cold spot temperature 115°C < protocol 121°C), and the sterilization rate was only 99.8%; the positioning deviation of the inoculation needle was ±1.2mm (protocol ±0.5mm), resulting in bacterial strain contamination; the calibration of the humidity sensor in the culture room failed, and the measured deviation was ±8% RH.

The appraisal conclusion concluded that defects in the equipment sterilization and positioning systems were the main cause of contamination.

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The bacterial bag production line quality appraisal report should include:

1, the purpose of the appraisal (such as contamination attribution, performance verification) and reference standards;

2, the production line model involved, sterilization records, environmental monitoring data;

3, testing methods and equipment list (such as Biological indicator, laser tracker);

4, correlation analysis between test data and failure (such as the impact of sterilization temperature on contamination rate);

05, clarify the quality responsibility judgment conclusion and technical basis;

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26, signature of the appraiser, microbiology professional qualification certificate and official seal of the organization.

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