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A extração de cafeína em bebidas estimulantes: uma nova abordagem para um experimento clássico em química orgânica
| Content Provider | Scilit |
|---|---|
| Author | Brenelli, Eugênia Cristina Souza |
| Copyright Year | 2003 |
| Description | Caffeine extraction procedures from water soluble and water insoluble materials for preparing stimulating beverages are described. Water soluble materials used were instant tea and coffee and water insoluble materials were, among others, guaraná powder and maté leaves. The extraction of caffeine from water soluble materials, especially instant tea, is more suitable for an organic chemistry teaching laboratory than the classic experiment using tea leaves, due to the economy of time and a larger amount of extracted caffeine. The procedure is time-saving and requires only a four-hour period. The experiments illustrate the extraction process as used in undergraduate organic chemistry laboratories |
| Related Links | http://www.scielo.br/pdf/qn/v26n1/14313.pdf http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0100-40422003000100023&lng=pt&nrm=iso&tlng=pt |
| Ending Page | 138 |
| Page Count | 3 |
| Starting Page | 136 |
| ISSN | 01004042 |
| e-ISSN | 01004042 |
| DOI | 10.1590/s0100-40422003000100023 |
| Journal | Química Nova |
| Issue Number | 1 |
| Volume Number | 26 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2003-01-01 |
| Access Restriction | Open |
| Subject Keyword | Química Nova Caffeine Extraction Stimulant Beverages |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
