Research on Sterilization Residue of High Voltage Power Supplies for Radiation Sterilization

In many fields such as food and medical industries, ensuring the aseptic state of products is of utmost importance. Radiation sterilization, as an efficient and convenient sterilization method, is increasingly being widely used. The high voltage power supply for radiation sterilization, as the core device of this technology, has a profound impact on the sterilization effect and sterilization residue.
Radiation sterilization uses high energy rays to damage the DNA structure of microorganisms, thereby achieving the purpose of killing bacteria, viruses, and other microorganisms. The high voltage power supply plays a key role in this process. It provides the necessary energy for the device that generates high energy rays. Different parameter settings of the high voltage power supply, such as output voltage, current, and pulse frequency, will directly affect the energy and dose distribution of the rays, and thus have significant differences in the sterilization effect and sterilization residue.
Sterilization residue mainly refers to the viable microorganisms or their metabolites remaining in the product after radiation sterilization treatment. Excessive sterilization residue may lead to a shortened shelf life of the product, a decline in quality, and even pose a potential threat to the health of consumers. Research shows that when the output voltage of the high voltage power supply is unstable, the energy of the generated rays will fluctuate. If the ray energy is too low to completely damage the DNA structure of microorganisms, some microorganisms will survive, forming sterilization residue. In addition, the current intensity and pulse frequency are also closely related to the sterilization residue. An inappropriate current intensity may not provide enough electrons to generate a sufficient amount of high energy rays, and an improper pulse frequency may allow microorganisms to repair themselves during the ray intervals, thus increasing the possibility of sterilization residue.
To effectively reduce the residue of radiation sterilization, optimizing the high voltage power supply is the key. First of all, improving the stability of the high voltage power supply is the top priority. By adopting advanced voltage stabilizing and current stabilizing technologies, ensure that the output voltage and current remain constant throughout the radiation process, providing a guarantee for the generation of stable high energy rays. For example, use a high precision feedback control system to monitor the power output parameters in real time and adjust them quickly according to the feedback signals to maintain the stability of the parameters. Secondly, reasonably adjust the pulse frequency of the high voltage power supply. According to different product characteristics and types of microorganisms, accurately calculate and set the optimal pulse frequency so that microorganisms cannot effectively repair themselves under the action of rays, thereby improving the sterilization efficiency and reducing the sterilization residue. At the same time, conduct in depth research on the matching between the high voltage power supply and the radiation device to ensure that the energy output by the power supply can be efficiently converted into ray energy and evenly act on the irradiated product, avoiding the situation where uneven energy distribution leads to incomplete sterilization in some areas and the generation of residue.
In addition, other auxiliary means can be combined to further reduce the sterilization residue. For example, pre treat the product before irradiation, optimize the packaging material and method of the product, and reduce the possibility of microbial attachment; during the irradiation process, turn or rotate the product appropriately so that all parts of the product can receive irradiation evenly.
In conclusion, the problem of sterilization residue of high voltage power supplies for radiation sterilization involves many factors. Through the optimization of the performance of the high voltage power supply and the combination of reasonable auxiliary measures, the sterilization residue can be effectively reduced, the quality and safety of radiation sterilization can be improved, and strong support can be provided for the development of related industries.