Loading...
Please wait, while we are loading the content...
Similar Documents
Estimativa por infravermelho da concentração da unidade estrutural b-O-4 em ligninas de angiospermas tropicais
| Content Provider | Scilit |
|---|---|
| Author | Abreu, Heber dos Santos |
| Copyright Year | 1997 |
| Description | Five Björkman lignins, codified as AM, LL, GG, PP and AP, were isolated from wood species of Aspidosperma macrocarpum Mart., Lophanthera lactescens Ducke, Gallesia gorazema (Vell.) Miq., Peltogyne paniculata Bth. and Aspidosperma polyneuron Muell. Arg., respectively. Analyses of the lignins were carried out by Fourier transformed infrared spectroscopy using an experimental technique, Diffusely Reflected Infrared Fourier Transformed (DRIFT), admitting in the original spectra a band at 1500 cm-1 as an internal reference. Application of a deconvolution technique made possible to estimate the percentage per mol of b-O-4 unit content around 65.5% to AM, 68.0% to LL, 71.0% to GG. 73.4% to PP and 75.0% to AP, toward AM |
| Related Links | http://www.scielo.br/pdf/qn/v20n6/v20n6a05.pdf http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0100-40421997000600005&lng=pt&nrm=iso&tlng=pt |
| Ending Page | 598 |
| Page Count | 7 |
| Starting Page | 592 |
| ISSN | 01004042 |
| e-ISSN | 01004042 |
| DOI | 10.1590/s0100-40421997000600005 |
| Journal | Química Nova |
| Issue Number | 6 |
| Volume Number | 20 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 1997-12-01 |
| Access Restriction | Open |
| Subject Keyword | Química Nova |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
