Applications of imaging spectroscopy in molecular biology. II. Colony screening based on absorption spectra.
Biotechnology (N Y)
; 8(8): 746-9, 1990 Aug.
Article
em En
| MEDLINE
| ID: mdl-1366901
ABSTRACT
Digital imaging spectroscopy has been used to obtain the grayscale spectrum of colored bacterial colonies directly from petri dishes. Up to 500 individual colony spectra can be simultaneously recorded and processed from a single plate. Spectra can be obtained in the visible to near infrared region (400nm-900nm) with 10nm resolution. Instrument response is normalized through run-time radiometric calibration such that each grayscale spectrum can be converted to the ground-state absorption spectrum of the colony. In this study, mutants of the photosynthetic bacterium Rhodobacter capsulatus have been differentiated by the absorption spectra of their pigment-protein complexes. This imaging technique is applicable to chromogenic systems in which colony and/or media color (e.g. indicator plates) provides a quantitative indicator of gene expression.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Análise Espectral
/
Processamento de Imagem Assistida por Computador
/
Contagem de Colônia Microbiana
Tipo de estudo:
Diagnostic_studies
/
Screening_studies
Idioma:
En
Revista:
Biotechnology (N Y)
Ano de publicação:
1990
Tipo de documento:
Article