Degradative studies on a soil humin fraction-sequential degradation of inherited humin
8 pages, 3 figures, 3 tables, 23 references.
Saved in:
| Main Authors: | , |
|---|---|
| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Pergamon Press
1987
|
| Online Access: | http://hdl.handle.net/10261/51365 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
dig-irnas-es-10261-51365 |
|---|---|
| record_format |
koha |
| spelling |
dig-irnas-es-10261-513652019-08-06T09:27:06Z Degradative studies on a soil humin fraction-sequential degradation of inherited humin Almendros Martín, Gonzalo González-Vila, Francisco Javier 8 pages, 3 figures, 3 tables, 23 references. Degradation products of soil humin preparations from three different soil types were studied. Inherited humin was isolated by ultrasonic treatment and densimetry of the heavy fraction of soil, and purified by treatment with dilute alkali and acid and exhaustive lipid extraction. These purified humins, which represented 10-26% of the total soil C (34-55% of total alkali-insoluble humified C), were degraded with potassium persulfate followed by alkaline permanganate oxidation. The degradation products obtained (identified by GC-MS as methyl derivatives) were fatty acids, dicarboxylic aliphatic acids, benzenecarboxylic acids, phenolic acids and alkanes. An unexpectedly high proportion of polymethylene compounds (mainly fatty acids) were observed in the humins of the three soils, in both loosely and strongly associated forms. It is considered that these aliphatic chains are stable humin constituents, physically or chemically associated with a highly oxidized, demethoxylated and disordered matrix entrapping a significant proportion of non-polar compounds. Some of the aliphatic components seem to be inherited from cuticular waxes of higher plants, but it is tentatively suggested that during the microbial reworking of lignins the lipid polymers were altered, then contributing to the formation of humin. Peer reviewed 2012-06-12T10:21:41Z 2012-06-12T10:21:41Z 1987 artículo http://purl.org/coar/resource_type/c_6501 Soil Biology and Biochemistry 19(5): 513-520 (1987) 0038-0717 http://hdl.handle.net/10261/51365 en open Pergamon Press |
| institution |
IRNAS ES |
| collection |
DSpace |
| country |
España |
| countrycode |
ES |
| component |
Bibliográfico |
| access |
En linea |
| databasecode |
dig-irnas-es |
| tag |
biblioteca |
| region |
Europa del Sur |
| libraryname |
Biblioteca del IRNAS España |
| language |
English |
| description |
8 pages, 3 figures, 3 tables, 23 references. |
| format |
artículo |
| author |
Almendros Martín, Gonzalo González-Vila, Francisco Javier |
| spellingShingle |
Almendros Martín, Gonzalo González-Vila, Francisco Javier Degradative studies on a soil humin fraction-sequential degradation of inherited humin |
| author_facet |
Almendros Martín, Gonzalo González-Vila, Francisco Javier |
| author_sort |
Almendros Martín, Gonzalo |
| title |
Degradative studies on a soil humin fraction-sequential degradation of inherited humin |
| title_short |
Degradative studies on a soil humin fraction-sequential degradation of inherited humin |
| title_full |
Degradative studies on a soil humin fraction-sequential degradation of inherited humin |
| title_fullStr |
Degradative studies on a soil humin fraction-sequential degradation of inherited humin |
| title_full_unstemmed |
Degradative studies on a soil humin fraction-sequential degradation of inherited humin |
| title_sort |
degradative studies on a soil humin fraction-sequential degradation of inherited humin |
| publisher |
Pergamon Press |
| publishDate |
1987 |
| url |
http://hdl.handle.net/10261/51365 |
| work_keys_str_mv |
AT almendrosmartingonzalo degradativestudiesonasoilhuminfractionsequentialdegradationofinheritedhumin AT gonzalezvilafranciscojavier degradativestudiesonasoilhuminfractionsequentialdegradationofinheritedhumin |
| _version_ |
1777664270676262912 |