Degradation of glycidyl esters in RBD palm oil as a function of storage conditions
| Autor: | Petra Weitkamp, Hans Josef Kersting, Bertrand Matthäus, Klaus Vosmann, Dominik Grundmann |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0301 basic medicine
chemistry.chemical_classification 030109 nutrition & dietetics Chemistry Food storage Fatty acid General Chemistry Food chemistry Industrial and Manufacturing Engineering 03 medical and health sciences Differential scanning calorimetry Palm oil Organic chemistry Degradation (geology) Food science Food Science Biotechnology |
| Zdroj: | European Journal of Lipid Science and Technology. 118:418-424 |
| ISSN: | 1438-9312 1438-7697 |
| DOI: | 10.1002/ejlt.201500312 |
| Popis: | Storage of oil samples in a refrigerator results in the degradation of glycidyl fatty acid esters (G-FE). In the present work the degradation rate for G-FE in RBD palm oil was determined at different temperatures with 0.4 mg/kg per month (5°C), 0.3 mg/kg per month (10°C), 0.2 mg/kg per month (15°C), 0.1 mg/kg per month (−20°) and 0.0 mg/kg per month (20°C). The crystallization process was identified for RBD palm oil as reason for this phenomenon. Isothermal differential scanning calorimetry measurements show that this process delivers enough energy to cleave the epoxy bonding of the G-FE (33.7 J/g (5 and 15°C) and 41.5 J/g (10°C)). |
| Databáze: | OpenAIRE |
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