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Determinação de açúcar total em café cru por espectroscopia no infravermelho próximo e regressão por mínimos quadrados parciais
| Content Provider | Scilit |
|---|---|
| Author | Morgano, Marcelo A. de Faria, Cristiano Gomes Ferrão, Marco F. Ferreira, Márcia M. C. |
| Copyright Year | 2007 |
| Description | In this work a fast method for the determination of the total sugar levels in samples of raw coffee was developed using the near infrared spectroscopy technique and multivariate regression. The sugar levels were initially obtained using gravimety as the reference method. Later on, the regression models were built from the near infrared spectra of the coffee samples. The original spectra were pre-treated according to the Kubelka-Munk transformation and multiplicative signal correction. The proposed analytical method made possible the direct determination of the total sugar levels in the samples with an error lower by 8% with respect to the conventional methodology |
| Related Links | http://www.scielo.br/pdf/qn/v30n2/19.pdf http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0100-40422007000200020&lng=pt&nrm=iso&tlng=pt |
| Ending Page | 350 |
| Page Count | 5 |
| Starting Page | 346 |
| ISSN | 01004042 |
| e-ISSN | 01004042 |
| DOI | 10.1590/s0100-40422007000200020 |
| Journal | Química Nova |
| Issue Number | 2 |
| Volume Number | 30 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2007-04-01 |
| Access Restriction | Open |
| Subject Keyword | Química Nova Quadrados Parciais Por Espectroscopia Infravermelho Prximo |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
