photoinactivation

pho·to·in·ac·ti·va·tion

(fō'tō-in-ak'ti-vā'shŭn),
Inactivation by light; for example, as in the treatment of herpes simplex by local application of a photoactive dye followed by exposure to a fluorescent lamp.

pho·to·in·ac·ti·va·tion

(fō'tō-in-ak'ti-vā'shŭn)
1. Acute sensitivity to light.
2. Inactivation by light (e.g., as in the treatment of herpes simplex by local application of a photoactive dye followed by exposure to a fluorescent lamp).
References in periodicals archive ?
Hoenes, "Photoinactivation of bacteria by endogenous photosensitizers and exposure to visible light of different wavelengths - a review on existing data," FEMS Microbiology Letters, vol.
Alves and coworkers showed that tri- and tetra-cationic porphyrin at 5.0 microM with a light fluence of 64.8 J cm(-2) led to photoinactivation of both Enterococcus faecalis and E coli with > 7.0 log (>99.999%) [46].
In the current work, CA powder was selected as an adsorptive support for Ti[O.sub.2]-doped with W[O.sub.3] which was prepared by microwave-assisted sol-gel method and these samples were tested for UV degradation of MB and UV photoinactivation of Gram-negative bacteria Escherichia coli (E.
Ghaderi, "Photocatalytic reduction of graphene oxide nanosheets on Ti[O.sub.2] thin film for photoinactivation of bacteria in solar light irradiation," Journal of Physical Chemistry C, vol.
Dutta, "Zinc oxide nanorod mediated visible light photoinactivation of model microbes in water," Nanotechnology, vol.
We note that the (-)-blebbistatin at 50 [micro]M, which is ten times higher concentration than that used for the cell shown in Figure 6(h), provided similar narrow and elongated morphology of lamellipodia; we consider that this argues against the possibility of the photoinactivation of (-)-blebbistatin [39] or of insufficient concentration of the drug.
polygama show that, even in the absence of visual injuries, fluoride constitutes a stress factor for the plant, and this stress manifests in the form of excess energy dissipation, considering that the increase in qN is related to how much of the electromagnetic energy was not destined to the conversion of photochemical products ATP and NAD(P)[H.sup.+]-[H.sup.+] and consists a reversible regulatory and protective mechanism that involves changes in the thylakoid membranes triggered by transthylakoidal pH gradient, transition states and photoinactivation of PSII (Rohacek, Soukupova, & Bartak, 2008).
Bacteria inhibition or death obtained in UVc/[H.sub.2][O.sub.2]/ [O.sub.3] and UVc/[H.sub.2][O.sub.2] treatment can be explained by the direct action of photoinactivation and Haber-Weiss reactions leading to internal cell injuries.
The discussion was based on a number of recent studies of the interaction of ultraviolet and visible lasers with the biological systems, as well as to illustrate every possible mechanism expected in the photoinactivation process.
Photoinactivation of Catalase Occurs under Both High and low-temperature stress conditions and accompanies photo inhibition of photosystem II.
Ultraviolet (193, 216 and 254 nm) photoinactivation of Escherichia coli strains with different repair deficiencies.