Lichen secondary metabolites in Umbilicaria antarctica evaluated by acetone rinsing ( Short Communication )
Study of the extracts from an Antarctic lichen Umbilicaria antarctica was done using a spectrophotometric approach. Secondary compounds were extracted by acetone rinsing from dried thalli of U. antarctica. The extracts were dried out, and diluted in ethanol. Then, spectral absorbance of the extracts...
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ftmasarykunivojs:oai:ojs.journals.muni.cz:article/12897 2023-05-15T13:46:41+02:00 Lichen secondary metabolites in Umbilicaria antarctica evaluated by acetone rinsing ( Short Communication ) Martic, Lora 2016-07-01 application/pdf http://journals.muni.cz/CPR/article/view/12897 eng eng Masaryk Univerzity http://journals.muni.cz/CPR/article/view/12897/11310 http://journals.muni.cz/CPR/article/view/12897 Copyright (c) 2020 Czech Polar Reports https://creativecommons.org/licenses/by-nc-nd/4.0 CC-BY-NC-ND Czech Polar Reports; Vol 6 No 2 (2016); 186-190 Czech Polar Reports; Vol. 6 No. 2 (2016); 186-190 1805-0697 1805-0689 macrolichen Antarctics extracts absorption spectrum info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftmasarykunivojs 2022-06-26T10:16:39Z Study of the extracts from an Antarctic lichen Umbilicaria antarctica was done using a spectrophotometric approach. Secondary compounds were extracted by acetone rinsing from dried thalli of U. antarctica. The extracts were dried out, and diluted in ethanol. Then, spectral absorbance of the extracts were measured within the wavelength of 190-700 nm. The spectra of the secondary compounds obtained by acetone rinsing (EAR – re-diluted (ethanol) extract gained during acetone rinsing) were compared with those from untreated thalli (control) and ethanol extract from the thalli of U. antarctica that passed acetone rinsing (ART). Spectral absorbance curves of the extracts gained by acetone rinsing were attributed to different prevailing secondary metabolites: usnic acid, lecanoric acid (U. antarctica). Spectral absorption curves of control thalli exbibited similar shape as ART spectral curves, however, the absorbance in the range of 230-310 nm reached higher values in control than in ART. Spectral absorbance curves from ART showed that a part of secondary metabolites still remained in the thalli. Photosynthetic pigments (carotenoids and chlorophylls) remained uneffected by acetone rinsing. Article in Journal/Newspaper Antarc* Antarctic Antarctica Masaryk University Journals Antarctic |
institution |
Open Polar |
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Masaryk University Journals |
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ftmasarykunivojs |
language |
English |
topic |
macrolichen Antarctics extracts absorption spectrum |
spellingShingle |
macrolichen Antarctics extracts absorption spectrum Martic, Lora Lichen secondary metabolites in Umbilicaria antarctica evaluated by acetone rinsing ( Short Communication ) |
topic_facet |
macrolichen Antarctics extracts absorption spectrum |
description |
Study of the extracts from an Antarctic lichen Umbilicaria antarctica was done using a spectrophotometric approach. Secondary compounds were extracted by acetone rinsing from dried thalli of U. antarctica. The extracts were dried out, and diluted in ethanol. Then, spectral absorbance of the extracts were measured within the wavelength of 190-700 nm. The spectra of the secondary compounds obtained by acetone rinsing (EAR – re-diluted (ethanol) extract gained during acetone rinsing) were compared with those from untreated thalli (control) and ethanol extract from the thalli of U. antarctica that passed acetone rinsing (ART). Spectral absorbance curves of the extracts gained by acetone rinsing were attributed to different prevailing secondary metabolites: usnic acid, lecanoric acid (U. antarctica). Spectral absorption curves of control thalli exbibited similar shape as ART spectral curves, however, the absorbance in the range of 230-310 nm reached higher values in control than in ART. Spectral absorbance curves from ART showed that a part of secondary metabolites still remained in the thalli. Photosynthetic pigments (carotenoids and chlorophylls) remained uneffected by acetone rinsing. |
format |
Article in Journal/Newspaper |
author |
Martic, Lora |
author_facet |
Martic, Lora |
author_sort |
Martic, Lora |
title |
Lichen secondary metabolites in Umbilicaria antarctica evaluated by acetone rinsing ( Short Communication ) |
title_short |
Lichen secondary metabolites in Umbilicaria antarctica evaluated by acetone rinsing ( Short Communication ) |
title_full |
Lichen secondary metabolites in Umbilicaria antarctica evaluated by acetone rinsing ( Short Communication ) |
title_fullStr |
Lichen secondary metabolites in Umbilicaria antarctica evaluated by acetone rinsing ( Short Communication ) |
title_full_unstemmed |
Lichen secondary metabolites in Umbilicaria antarctica evaluated by acetone rinsing ( Short Communication ) |
title_sort |
lichen secondary metabolites in umbilicaria antarctica evaluated by acetone rinsing ( short communication ) |
publisher |
Masaryk Univerzity |
publishDate |
2016 |
url |
http://journals.muni.cz/CPR/article/view/12897 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Czech Polar Reports; Vol 6 No 2 (2016); 186-190 Czech Polar Reports; Vol. 6 No. 2 (2016); 186-190 1805-0697 1805-0689 |
op_relation |
http://journals.muni.cz/CPR/article/view/12897/11310 http://journals.muni.cz/CPR/article/view/12897 |
op_rights |
Copyright (c) 2020 Czech Polar Reports https://creativecommons.org/licenses/by-nc-nd/4.0 |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766245076145537024 |