Spectrophotometric Studies of the Energy Consumed During Oxidative Degradation of D-Fructose
Ahmed, SM
| HERO ID | 598668 |
|---|---|
| In Press | No |
| Year | 2008 |
| Title | Spectrophotometric Studies of the Energy Consumed During Oxidative Degradation of D-Fructose |
| Authors | Ahmed, SM |
| Journal | Spectroscopy Letters |
| Volume | 41 |
| Issue | 5 |
| Page Numbers | 212-220 |
| Abstract | Mechanistic investigation of the oxidative degradation of d-fructose (D-Fruc) has been studied by spectrophotometric technique. Molecular mechanics (MM +) calculations suggest that the potential energy (PE/kcal mol-1) of the d-fruc (opening structure) is at least three (3.71) times more stable than the PE of the cycling structure of the same matrix. The oxidation constant (Kox) of the anionic form of the d-Fruc (Fruc-NaOH) is about seven times greater than that of the protonated form (Fruc-H2SO4). Therefore, the anionic form is more highly oxidizable than is the cationic form of this matrix. The limit of detection can be as low as 18 ppm (mg L-1) of d-Fruc. This is about 60 times lower than the blood sugar level (BSL) or 100 times lower than that reported previously. The proposed procedure was applied successfully for the oxidation of D-Fruc in uni-fructose powder. The anionic form of D-Fruc (Fruc-NaOH) has the ability to store energy about 744.72 kJ g-1 h at 608 nm in a condensed lightweight form. Kinetic parameters of the oxidative degradation of the anionic form of D-Fruc at different concentration were deduced. A number of models were used to evaluate the kinetic parameters. The mechanism of the degradation of D-Fruc is explained on the basis of kinetic parameters. [ABSTRACT FROM AUTHOR] Copyright of Spectroscopy Letters is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts) |
| Doi | 10.1080/00387010802134322 |
| Wosid | WOS:000258454100003 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | SPECTROPHOTOMETRY; ENERGY dissipation; OXIDATION; FRUCTOSE; BLOOD sugar; d-Fructose; energy storage; kinetics; MM+ calculations |
| Is Qa | No |