Journal
MICROCHEMICAL JOURNAL
Volume 121, Issue -, Pages 48-55Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.microc.2015.02.005
Keywords
Trentepohlia algae; SEM; Raman imaging; Carotenoids; Scytonemin; Bacterioruberin
Categories
Funding
- Ministry of Economy and Competitiveness (MINECO) [DISILICA-1930, BIA2014-59124]
- University of the Basque Country (UPV/EHU)
- Global Change and Heritage [UFI 11-26]
Ask authors/readers for more resources
This work aims to understand the nature of the main colonizer and the composition of the biogenic compounds present in a reddish biofilm located on the sandstone from the Northside of La Galea Fortress (Getxo, North of Spain). For that purpose, microscopic observations of the main colonizer and the biofilm were conducted using Phase Contrast Microscope and a Scanning Electron microscope. These observations allowed to identify the Trentepohlia algae as the main colonizer responsible for the reddish biofilm formation. In order to determine the composition of the organic compounds present in the Trentepohlia algae and those excreted by them, point-by-point and Raman imaging using confocal Raman microscope were applied. These analyses allowed to identify not only beta-carotene as the main biogenic pigment but also additional carotenoids such as bacterioruberin. Moreover, the identification of scytonemin suggests the presence of cyanobacteria on the biofilm. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available