<em>Ultraviolet germicidal irradiation (UVGI)</em> is a purification technique that inactivate microorganisms and the short wavelength ultraviolet (UV-C) light to execute by destroying nucleic acids and upsetting their DNA, leaving them incapable to vital cellular functions.
<em>Ultraviolet (UV) light kills cells damaging their DNA</em>
<em>The subsequent thymine dimer is very stable,</em> however fix of this sort of DNA harm for the most part by extracting or expelling the two bases and filling in the holes with new nucleotides is fairly efficient.
UV light applies its mutagenic impact by energizing <em>electrons in atoms</em>
<em>The excitation of electrons in DNA atoms regularly brings about the development of extra bonds between contiguous pyrimidines (explicitly thymine) in DNA</em>
