Appl Environ Microbiol. 1996 Sep;62(9):3339-43. doi: 10.1128/aem.62.9.3339-3343.1996.
We have adapted a commercially available fiber-optic spectroradiometer with diode array detection to record reflection and absorption spectra from single, 1-mm-diameter bacterial colonies. A careful assessment of the performance of the spectroradiometer for this application is reported. In a model study employing colonies from various phototrophic bacteria, we show that the reflectance spectra are reliable within the range of 450 to 820 nm, whereas the transmission spectra yield accurate peak intensities and absorption maxima from 400 to 900 nm. For screening of populations of about 10(sup4) colonies, fiber-optic transmission spectroscopy provides an attractive and inexpensive alternative to present techniques based on charge-coupled device imaging technology.
我们对商业上可用的光纤光谱仪与二极管阵列探测器进行了改造,以记录单 1 毫米直径细菌菌落的反射和吸收光谱。报告了对该应用光谱仪性能的仔细评估。在使用来自各种光养细菌的菌落的模型研究中,我们表明在 450 到 820nm 的范围内,反射率光谱是可靠的,而透射光谱则能从 400 到 900nm 精确地获得峰强度和吸收最大值。对于约 10(sup4)个菌落的群体筛选,光纤传输光谱学为基于电荷耦合器件成像技术的现有技术提供了一种有吸引力和经济实惠的替代方案。