<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Lopes, M. H.</style></author><author><style face="normal" font="default" size="100%">Neto, C. Pascoal</style></author><author><style face="normal" font="default" size="100%">Barros, A. S.</style></author><author><style face="normal" font="default" size="100%">Rutledge, D.</style></author><author><style face="normal" font="default" size="100%">Delgadillo, I.</style></author><author><style face="normal" font="default" size="100%">Gil, A. M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Quantitation of aliphatic suberin in Quercus suber L. cork by FTIR spectroscopy and solid-state 13C-NMR spectroscopy</style></title><secondary-title><style face="normal" font="default" size="100%">Biopolymers</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">13 C-cross polarization/ magic angle spinning</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">FTIR spectroscopy with photoacoustic detection</style></keyword><keyword><style  face="normal" font="default" size="100%">multivariate calibration</style></keyword><keyword><style  face="normal" font="default" size="100%">quantitation</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber L.</style></keyword><keyword><style  face="normal" font="default" size="100%">solid-state NMR</style></keyword><keyword><style  face="normal" font="default" size="100%">suberin</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2000</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2000///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1002/1097-0282(2000)57:6&lt;344::AID-BIP40&gt;3.0.CO2-#</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">57</style></volume><pages><style face="normal" font="default" size="100%">344 - 351</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This work determined that the percentage of suberin in cork may be found by solid-state 13C cross polarization/magic angle spinning (CP/MAS) NMR spectroscopy and by FTIR with photoacoustic detection (FTIR-PAS) spectroscopy. A linear relationship is found between the suberin content measured through CP/MAS spectral areas and that measured gravimetrically. Furthermore, application of a partial least squares (PLS1) regression model to the NMR and gravimetric data sets clearly correlates the two sets, enabling suberin quantification with 90% precision. Suberin quantitation by FTIR-PAS spectroscopy is also achieved by a PLS1 regression model, giving 90% accurate estimates of the percentage of suberin in cork. Therefore, 13C-CP/MAS NMR and FTIR-PAS proved to be useful and accurate noninvasive techniques to quantify suberin in cork, thus avoiding the traditional time consuming and destructive chemical methods. © 2000 John Wiley &amp; Sons, Inc. Biopolymers (Biospectroscopy) 57: 344–351, 2000</style></abstract><issue><style face="normal" font="default" size="100%">6</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;publisher: John Wiley &amp; Sons, Inc.</style></notes></record></records></xml>