Use of Low-Field Solid-State NMR Relaxation to Study the Latex Extracted from Brosimum Parinarioides
The stability of the natural latex called Leite de Amapá, extracted from the Brosimum paranarioides tree, which is used as food and in popular medicine in Amazônia, was analyzed during an interval of twelve months. The molecular stability was monitored by proton spin-lattice (T₁H) and spin-spin (T₂H...
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Published in | Macromolecular symposia. Vol. 299-300; no. 1; pp. 254 - 256 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
Wiley-VCH Verlag
2011
WILEY-VCH Verlag WILEY‐VCH Verlag |
Subjects | |
Online Access | Get full text |
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Summary: | The stability of the natural latex called Leite de Amapá, extracted from the Brosimum paranarioides tree, which is used as food and in popular medicine in Amazônia, was analyzed during an interval of twelve months. The molecular stability was monitored by proton spin-lattice (T₁H) and spin-spin (T₂H) relaxation times, which were measured with help of low-field nuclear magnetic resonance (NMR) with ¹H frequency at 23 MHz. According to the T₂H measurements, the latex degrades continuously and significant differences can be observed after 6 months of storage at ambient conditions, when no sort of chemical of physical treatment is employed. |
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Bibliography: | http://dx.doi.org/10.1002/masy.200900076 istex:8FA1C13B8FF0A066943A87A08B5B524554F7C744 ArticleID:MASY200900076 ark:/67375/WNG-LF211FDX-T ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1022-1360 1521-3900 1521-3900 |
DOI: | 10.1002/masy.200900076 |