Raziskovalna skupina z univerze Mie na Japonskem je ugotovila, da je zgodnje zarodke cebric (zarodke nekaj ur po oploditvi) mogoče varno obsevati z 278 nm UVC.
UVC-LED okoli 260 nm se uporabljajo za sterilizacijo, saj povzročajo in inaktivirajo poškodbe DNK zaradi bakterij in virusov. Večina trenutnih raziskav se osredotoča na učinek UVC z valovnimi dolžinami pod 240 nm (207 nm, 222 nm, 233 nm) na uničenje novega koronavirusa. Vendar pa je malo študij o toksičnosti, varnosti in odzivu organizmov na UVC obsevanje okoli 280 nm.
Therefore, this time, a total of 16 irradiation doses were set in the range of 0.5 to 60 mJ/cm² using the irradiation device developed by the research group to irradiate 278 nm UVC, and zebrafish embryos were directly irradiated.
After 3 days of irradiation, the researchers evaluated the survival rate, hatching rate, heart rate, deformity rate, etc. of zebrafish embryos. The results found that all embryos remained alive under the irradiation dose below 4.5mJ/cm². However, when the dose reached 7.5 mJ/cm², the deformity rate significantly increased to 82 percent , and the survival rate decreased to 37 percent . Embryo death was observed if the dose was increased to 10 mJ/cm² and above.
Based on the above experimental results, the researchers determined that there is a biological defense system inside the zebrafish embryo, which can resist the damage caused by UVC irradiation to the greatest extent, and the limit dose that can resist UVC irradiation is 4.5 mJ/cm².
The researchers believe that the biological defense mechanism of zebrafish against UVC-induced DNA damage is that after zebrafish embryos are treated with UVC at a dose of 4.5 mJ/cm², the p53 signaling pathway in cells is immediately and urgently activated. Arrest, DNA repair, cell division/proliferation and damaged cell death in rapid response to stress. In addition, after 3 days of recovery, p53 variability was attenuated and instead activated the STAT signaling pathway, which continued to repair damaged DNA.
Rezultati raziskav na to temo zagotavljajo znanstveno podlago za varnost UVC-LED, ki se uporablja za človeško telo. Hkrati je raziskovalna skupina ugotovila, da je UVC primeren za dezinfekcijo bakterij in virusov, vključno s koronavirusom, pa tudi za dezinfekcijo v ribogojstvu.
"Experts say UV" believes that: at the application level, the sterilization experience of UVC-LED is difficult to intuitively perceive, and consumers will have concerns about safety when using it. brings confidence.
GMKJ LED tehnologija je globoko vpeta v zdrave in pametne vire svetlobe, ki trgu zagotavlja celotno paleto izdelkov in rešitev UVA UVB UVC LED, infrardeče IR LED VCSEL ter ima na stotine visoko{0}}kakovostnih partnerjev v domači in tujini trgi, da skupaj spodbujajo uporabo svetlobne tehnologije za ustvarjanje zdravega in pametnega življenja. vzrok.
