Isolation of xylogalactans from the Corallinales: Influence of the extraction method on yields and compositions
An already studied seaweed, Corallina officinalis and two other species of the red seaweed order Corallinales, i.e. Bossiella orbigniana and Jania rubens, were extracted using three different standard procedures: the method of Usov, which destroys the calcium carbonate cover by the addition of conce...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_01448617_v49_n1_p57_Navarro |
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todo:paper_01448617_v49_n1_p57_Navarro2023-10-03T14:59:44Z Isolation of xylogalactans from the Corallinales: Influence of the extraction method on yields and compositions Navarro, D.A. Stortz, C.A. Agaran Bossiella Co rallina Corallinaceae Extraction Jania Rhodophyta Xylogalactans Degradation Extraction Hot water heating Polysaccharides Acid degradation Seaweed algae Bossiella Bossiella orbigniana Corallina Corallina officinalis Corallinaceae Corallinales Jania Jania rubens Rallina Rhodophyta An already studied seaweed, Corallina officinalis and two other species of the red seaweed order Corallinales, i.e. Bossiella orbigniana and Jania rubens, were extracted using three different standard procedures: the method of Usov, which destroys the calcium carbonate cover by the addition of concentrated acid, the method of Cases, which applies controlled acid degradation of this cover, and the method of Takano, which avoids an acid medium, and uses hot water. The three methods extract similar amounts of products, but those using acid give better yields of xylogalactans, without evidence for degradation. However, subsequent hot water extraction shows that the traces of acid present when applying the method of Usov yield partially degraded products at this stage. The characteristics of the xylogalactans of the newly studied seaweeds are similar to those previously studied. However, in Jania rubens significant amounts of 3,6-anhydrogalactose, and in Bossiella orbigniana small amounts of the D-enantiomer of 2-O-methylgalactose were found. © 2002 Elsevier Science Ltd. All rights reserved. Fil:Navarro, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Stortz, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01448617_v49_n1_p57_Navarro |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Agaran Bossiella Co rallina Corallinaceae Extraction Jania Rhodophyta Xylogalactans Degradation Extraction Hot water heating Polysaccharides Acid degradation Seaweed algae Bossiella Bossiella orbigniana Corallina Corallina officinalis Corallinaceae Corallinales Jania Jania rubens Rallina Rhodophyta |
| spellingShingle |
Agaran Bossiella Co rallina Corallinaceae Extraction Jania Rhodophyta Xylogalactans Degradation Extraction Hot water heating Polysaccharides Acid degradation Seaweed algae Bossiella Bossiella orbigniana Corallina Corallina officinalis Corallinaceae Corallinales Jania Jania rubens Rallina Rhodophyta Navarro, D.A. Stortz, C.A. Isolation of xylogalactans from the Corallinales: Influence of the extraction method on yields and compositions |
| topic_facet |
Agaran Bossiella Co rallina Corallinaceae Extraction Jania Rhodophyta Xylogalactans Degradation Extraction Hot water heating Polysaccharides Acid degradation Seaweed algae Bossiella Bossiella orbigniana Corallina Corallina officinalis Corallinaceae Corallinales Jania Jania rubens Rallina Rhodophyta |
| description |
An already studied seaweed, Corallina officinalis and two other species of the red seaweed order Corallinales, i.e. Bossiella orbigniana and Jania rubens, were extracted using three different standard procedures: the method of Usov, which destroys the calcium carbonate cover by the addition of concentrated acid, the method of Cases, which applies controlled acid degradation of this cover, and the method of Takano, which avoids an acid medium, and uses hot water. The three methods extract similar amounts of products, but those using acid give better yields of xylogalactans, without evidence for degradation. However, subsequent hot water extraction shows that the traces of acid present when applying the method of Usov yield partially degraded products at this stage. The characteristics of the xylogalactans of the newly studied seaweeds are similar to those previously studied. However, in Jania rubens significant amounts of 3,6-anhydrogalactose, and in Bossiella orbigniana small amounts of the D-enantiomer of 2-O-methylgalactose were found. © 2002 Elsevier Science Ltd. All rights reserved. |
| format |
JOUR |
| author |
Navarro, D.A. Stortz, C.A. |
| author_facet |
Navarro, D.A. Stortz, C.A. |
| author_sort |
Navarro, D.A. |
| title |
Isolation of xylogalactans from the Corallinales: Influence of the extraction method on yields and compositions |
| title_short |
Isolation of xylogalactans from the Corallinales: Influence of the extraction method on yields and compositions |
| title_full |
Isolation of xylogalactans from the Corallinales: Influence of the extraction method on yields and compositions |
| title_fullStr |
Isolation of xylogalactans from the Corallinales: Influence of the extraction method on yields and compositions |
| title_full_unstemmed |
Isolation of xylogalactans from the Corallinales: Influence of the extraction method on yields and compositions |
| title_sort |
isolation of xylogalactans from the corallinales: influence of the extraction method on yields and compositions |
| url |
http://hdl.handle.net/20.500.12110/paper_01448617_v49_n1_p57_Navarro |
| work_keys_str_mv |
AT navarroda isolationofxylogalactansfromthecorallinalesinfluenceoftheextractionmethodonyieldsandcompositions AT stortzca isolationofxylogalactansfromthecorallinalesinfluenceoftheextractionmethodonyieldsandcompositions |
| _version_ |
1807321155935141888 |