Structural elucidation of tannins of spent coffee grounds by CP-MAS C-13 NMR and MALDI-TOF MS
In this study, carbon-13 nuclear magnetic resonance in the solid state using cross-polarization and magic angle spinning (CP-MAS 13C NMR) spectroscopic and matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometric methods were applied to characterize the composition,...
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Online Access: | http://eprints.utm.my/id/eprint/56167/1/JiunhorLow2015_StructuralElucidationofTanninsofSpentCoffeeGrounds.pdf http://eprints.utm.my/id/eprint/56167/ http://dx.doi.org/10.1016/j.indcrop.2015.03.001 |
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my.utm.561672016-11-16T00:58:54Z http://eprints.utm.my/id/eprint/56167/ Structural elucidation of tannins of spent coffee grounds by CP-MAS C-13 NMR and MALDI-TOF MS Low, Jiunhor Wan Abdul Rahman, Wan Aizan Jamaluddin, Jamarosliza TP Chemical technology In this study, carbon-13 nuclear magnetic resonance in the solid state using cross-polarization and magic angle spinning (CP-MAS 13C NMR) spectroscopic and matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometric methods were applied to characterize the composition, constituent monomer and oligomeric structure of tannins of spent coffee grounds (SCG). The findings elucidated that the monomeric constituents of tannins of SCG primarily composed of catechin, gallocatechin, chebulic acid, gallocatechin-3-O-gallate and accompanied by minor amount of fisetinidin concurrently. Appreciable amount of catechin was found among the observed components. Hence, this simply implied that catechin was the main substructure of the tannins of SCG. It is expected that the present findings will serve as a platform towards a structural understanding of tannins of SCG in filling up the gaps in the field of study of SCG, and simultaneously promoting the use of SCG as a renewable resource for tannins. Elsevier 2015-07-01 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/56167/1/JiunhorLow2015_StructuralElucidationofTanninsofSpentCoffeeGrounds.pdf Low, Jiunhor and Wan Abdul Rahman, Wan Aizan and Jamaluddin, Jamarosliza (2015) Structural elucidation of tannins of spent coffee grounds by CP-MAS C-13 NMR and MALDI-TOF MS. Industrial Crops and Products, 69 . pp. 456-461. ISSN 0926-6690 http://dx.doi.org/10.1016/j.indcrop.2015.03.001 DOI:10.1016/j.indcrop.2015.03.001 |
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TP Chemical technology Low, Jiunhor Wan Abdul Rahman, Wan Aizan Jamaluddin, Jamarosliza Structural elucidation of tannins of spent coffee grounds by CP-MAS C-13 NMR and MALDI-TOF MS |
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In this study, carbon-13 nuclear magnetic resonance in the solid state using cross-polarization and magic angle spinning (CP-MAS 13C NMR) spectroscopic and matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometric methods were applied to characterize the composition, constituent monomer and oligomeric structure of tannins of spent coffee grounds (SCG). The findings elucidated that the monomeric constituents of tannins of SCG primarily composed of catechin, gallocatechin, chebulic acid, gallocatechin-3-O-gallate and accompanied by minor amount of fisetinidin concurrently. Appreciable amount of catechin was found among the observed components. Hence, this simply implied that catechin was the main substructure of the tannins of SCG. It is expected that the present findings will serve as a platform towards a structural understanding of tannins of SCG in filling up the gaps in the field of study of SCG, and simultaneously promoting the use of SCG as a renewable resource for tannins. |
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Article |
author |
Low, Jiunhor Wan Abdul Rahman, Wan Aizan Jamaluddin, Jamarosliza |
author_facet |
Low, Jiunhor Wan Abdul Rahman, Wan Aizan Jamaluddin, Jamarosliza |
author_sort |
Low, Jiunhor |
title |
Structural elucidation of tannins of spent coffee grounds by CP-MAS C-13 NMR and MALDI-TOF MS |
title_short |
Structural elucidation of tannins of spent coffee grounds by CP-MAS C-13 NMR and MALDI-TOF MS |
title_full |
Structural elucidation of tannins of spent coffee grounds by CP-MAS C-13 NMR and MALDI-TOF MS |
title_fullStr |
Structural elucidation of tannins of spent coffee grounds by CP-MAS C-13 NMR and MALDI-TOF MS |
title_full_unstemmed |
Structural elucidation of tannins of spent coffee grounds by CP-MAS C-13 NMR and MALDI-TOF MS |
title_sort |
structural elucidation of tannins of spent coffee grounds by cp-mas c-13 nmr and maldi-tof ms |
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Elsevier |
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2015 |
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http://eprints.utm.my/id/eprint/56167/1/JiunhorLow2015_StructuralElucidationofTanninsofSpentCoffeeGrounds.pdf http://eprints.utm.my/id/eprint/56167/ http://dx.doi.org/10.1016/j.indcrop.2015.03.001 |
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