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Combining biocatalysts to achieve new phase change materials. Application to non-edible animal fat
| Content Provider | Semantic Scholar |
|---|---|
| Author | Gallart-Sirvent, Pau Martín, Marc Solé, A. Riera Villorbina, Gemma Balcells, Mercè Cabeza, Luisa F. Canela-Garayoa, Ramon |
| Copyright Year | 2018 |
| Abstract | Abstract The thermal properties of various alkyl threo-9, 10-dihydroxystearates (DHSEs) prepared from non-edible fat were studied. Non-edible animal fat was hydrolyzed in a 93% yield with R. oryzae resting cells. Crude unsaturated fatty acids were recovered from the matter liquor resulting from a crystallization performed to achieve the saturated fatty acids. These unsaturated free fatty acids were epoxidized with 30% H2O2 using immobilized Candida antarctica Lipase-B (CAL-B) as biocatalyst. The epoxy ring was cleaved with hot water in the presence of tert-butanol (t-BuOH). Pure threo-9, 10-dihydroxystearic acid (DHSA) from animal fat was recovered by crystallization (51% yield). Subsequently, DHSA was esterified in α-limonene using biocatalysts yielding twelve DHSEs (58–90% yield). Differential scanning calorimetry (DSC) analysis of these esters revealed potential latent heats ranging from 136.83 kJ kg−1 to 234.22 kJ kg−1 and melting temperatures from 52.45 °C to 76.88 °C. Finally, the compounds with enthalpies above 200 kJ kg−1 were subjected to 100 and 1000 thermal cycles. These experiments showed that these products present good thermal reliability. |
| Starting Page | 76 |
| Ending Page | 83 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.mcat.2017.10.037 |
| Alternate Webpage(s) | https://repositori.udl.cat/bitstream/handle/10459.1/60476/026174.pdf?isAllowed=y&sequence=4 |
| Alternate Webpage(s) | https://doi.org/10.1016/j.mcat.2017.10.037 |
| Volume Number | 444 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
