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Ultra-weak photon emission from biological samples: Definition, mechanisms, properties, detection and applications

Paper ID Volume ID Publish Year Pages File Format Full-Text
30197 44464 2014 9 PDF Available
Title
Ultra-weak photon emission from biological samples: Definition, mechanisms, properties, detection and applications
Abstract

•Spectral and intensity properties of ultra-weak photon emission.•Detection techniques of ultra-weak photon emission.•Applications of ultra-weak photon emission.

This review attempts to summarize molecular mechanisms, spectral and intensity properties, detection techniques and applications of ultra-weak photon emission. Ultra-weak photon emission is the chemiluminescence from biological systems where electronically excited species are formed during oxidative metabolic or oxidative stress processes. It is generally accepted that photons are emitted (1) at near UVA, visible, and near IR spectral ranges from 350 to 1300 nm and (2) at the intensity of photon emission in the range of several units to several hundreds (oxidative metabolic process) and several hundreds to several thousands (oxidative stress process) photons s−1 cm−2. Current development in detection using low-noise photomultiplier tubes and imaging using highly sensitive charge coupled device cameras allows temporal and spatial visualization of oxidative metabolic or oxidative stress processes, respectively. As the phenomenon of ultra-weak photon emission reflects oxidative metabolic or oxidative stress processes, it can be widely used as a non-invasive tool for monitoring of the physiological state of biological systems.

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Keywords
Chemiluminescence; Charge coupled device; Non-invasive diagnostics; Oxidative stress; Photomultiplier; Singlet oxygen; Triplet excited carbonyl
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 139, 5 October 2014, Pages 2–10
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us