Anthraquinones and phenols as intermediates in the formation of dark-colored humic acid-like pigments by Eurotium echinulatum
5 pages, 5 figures, 1 table, 39 references.
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| Format: | artículo biblioteca |
| Language: | English |
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Soil Science Society of America
1975-07
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| Subjects: | Soil fungi, Anthraquinone formation by fungi, Anthraquinones in fungal polymers, Anthraquinones released from fungal polymers, Phenosl released from fungal polymers, Amino acids in fungal polymers, |
| Online Access: | http://hdl.handle.net/10261/74943 |
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dig-irnas-es-10261-749432018-09-13T09:00:04Z Anthraquinones and phenols as intermediates in the formation of dark-colored humic acid-like pigments by Eurotium echinulatum Sáiz-Jiménez, Cesáreo Haider, K. M. Martín, J. P. Soil fungi Anthraquinone formation by fungi Anthraquinones in fungal polymers Anthraquinones released from fungal polymers Phenosl released from fungal polymers Amino acids in fungal polymers 5 pages, 5 figures, 1 table, 39 references. Eurotium echinulatum, a fungus isolated from a vertisol in southern Spain, formed humic acid-like pigments during growth in glucose-asparagine or glucose-NaNO3 media. After 6 to 7 days the phenols, orsellinic, p-hydroxycinnamic, and p-hydroxybenzoic acids, and the anthraquinones, endocrocin, emodin, and physicion were detected in the culture media. Upon further development of the mycelial mats additional aromatic compounds were produced and after 4 to 6 weeks more than 50 different ether-extractable phenols and anthraquinones were detected. With further incubation the amounts and number of these compounds decreased and pigment formation in the media increased. After 2 to 3 months the culture media were dark brown to black and about 1 to 3.5 g/liter of polymer could be recovered upon acidification of the culture medium. Sodium amalgam reduction of this polymer yielded numerous phenols, anthraquinones, anthrones, and possibly anthracene derivatives. Treatment with sodium dithionite yielded largely anthraquinones. The polymer contained 1 to 4.5% N depending upon the N source. From 50 to 60% of this N was released in the form of amino acids upon acid hydrolysis. With both asparagine and NaNO3 as N sources the same amino acids were isolated from 6N HCl hydrolysates. Quantitatively, however, there were differences in the percentage distribution of the amino acids. Peer reviewed 2013-04-23T11:22:52Z 2013-04-23T11:22:52Z 1975-07 artículo http://purl.org/coar/resource_type/c_6501 Soil Science Society of America Journal 39(4): 649-653 (1975) 0361-5995 http://hdl.handle.net/10261/74943 1435-0661 en open Soil Science Society of America |
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IRNAS ES |
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España |
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ES |
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biblioteca |
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Europa del Sur |
| libraryname |
Biblioteca del IRNAS España |
| language |
English |
| topic |
Soil fungi Anthraquinone formation by fungi Anthraquinones in fungal polymers Anthraquinones released from fungal polymers Phenosl released from fungal polymers Amino acids in fungal polymers Soil fungi Anthraquinone formation by fungi Anthraquinones in fungal polymers Anthraquinones released from fungal polymers Phenosl released from fungal polymers Amino acids in fungal polymers |
| spellingShingle |
Soil fungi Anthraquinone formation by fungi Anthraquinones in fungal polymers Anthraquinones released from fungal polymers Phenosl released from fungal polymers Amino acids in fungal polymers Soil fungi Anthraquinone formation by fungi Anthraquinones in fungal polymers Anthraquinones released from fungal polymers Phenosl released from fungal polymers Amino acids in fungal polymers Sáiz-Jiménez, Cesáreo Haider, K. M. Martín, J. P. Anthraquinones and phenols as intermediates in the formation of dark-colored humic acid-like pigments by Eurotium echinulatum |
| description |
5 pages, 5 figures, 1 table, 39 references. |
| format |
artículo |
| topic_facet |
Soil fungi Anthraquinone formation by fungi Anthraquinones in fungal polymers Anthraquinones released from fungal polymers Phenosl released from fungal polymers Amino acids in fungal polymers |
| author |
Sáiz-Jiménez, Cesáreo Haider, K. M. Martín, J. P. |
| author_facet |
Sáiz-Jiménez, Cesáreo Haider, K. M. Martín, J. P. |
| author_sort |
Sáiz-Jiménez, Cesáreo |
| title |
Anthraquinones and phenols as intermediates in the formation of dark-colored humic acid-like pigments by Eurotium echinulatum |
| title_short |
Anthraquinones and phenols as intermediates in the formation of dark-colored humic acid-like pigments by Eurotium echinulatum |
| title_full |
Anthraquinones and phenols as intermediates in the formation of dark-colored humic acid-like pigments by Eurotium echinulatum |
| title_fullStr |
Anthraquinones and phenols as intermediates in the formation of dark-colored humic acid-like pigments by Eurotium echinulatum |
| title_full_unstemmed |
Anthraquinones and phenols as intermediates in the formation of dark-colored humic acid-like pigments by Eurotium echinulatum |
| title_sort |
anthraquinones and phenols as intermediates in the formation of dark-colored humic acid-like pigments by eurotium echinulatum |
| publisher |
Soil Science Society of America |
| publishDate |
1975-07 |
| url |
http://hdl.handle.net/10261/74943 |
| work_keys_str_mv |
AT saizjimenezcesareo anthraquinonesandphenolsasintermediatesintheformationofdarkcoloredhumicacidlikepigmentsbyeurotiumechinulatum AT haiderkm anthraquinonesandphenolsasintermediatesintheformationofdarkcoloredhumicacidlikepigmentsbyeurotiumechinulatum AT martinjp anthraquinonesandphenolsasintermediatesintheformationofdarkcoloredhumicacidlikepigmentsbyeurotiumechinulatum |
| _version_ |
1777664593654448128 |