Lighting and the indoor microbiome: measuring the effect of LED lighting on E.coli
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Date
2019
Authors
Naganuma, Lindsey
Wimer, Isaac
Journal Title
Journal ISSN
Volume Title
Publisher
University of Oregon, Dept. of Architecture, Portland Program
Abstract
The more we learn about natural light’s direct correlation to microbiology and its ability to regulate
the production and growth of bacteria, the more the topic brings into question the effect electric light has on
indoor microbiomes of the built environment. This research study specifically looks at the effects of different
LED light spectrum wavelengths and their effect on Escherichia coli (E.coli) bacteria growth. Three residential
LED lamps were used to expose plated E.coli to a range in spectrum of three different controlled LED lighting
systems, as well as daylighting and their individual effects on the growth of E.coli over the course of 48 hours.
The results indicated that LED lighting with high levels of orange and blue light were equally more effective at
reducing the viability of E.coli colonies than the daylight levels during the study. Then those results were
compared to the light spectrum readings of different artificially light spaces in the Scott Edwards Architecture
office.
Description
10 pages
Keywords
indoor office, microbiome, LED, lighting