Characterization of cardoon accessions as feedstock for biodiesel production
Diesel fuels have an essential function in industrial economies. In the last decade, several studies were conducted in order to find alternative sources of vegetables oils suitable to biodiesel conversion. The present work aimed to characterize the oil chemical composition in eleven different acce...
| Autores principales: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2018
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/3465 https://www.sciencedirect.com/science/article/pii/S0016236118314947?via%3Dihub https://doi.org/10.1016/j.fuel.2018.08.123 |
| Sumario: | Diesel fuels have an essential function in industrial economies. In the last decade, several studies were conducted
in order to find alternative sources of vegetables oils suitable to biodiesel conversion. The present work aimed to
characterize the oil chemical composition in eleven different accessions of domestic and wild cardoon (Cynara
cardunculus L. var. altilis and var. sylvestris, respectively) in order to evaluate its putative use as an alternative
energy crop, with main focus in biodiesel production. No significant differences were measured between both
botanical varieties for oil content; values of 20.80 ± 6.65% were found. The highest values were observed for
the wild cardoon accessions “Uruguay Centro” (35.95%) and “Pergamino” (27.78%). The fatty acid composition
was similar for both botanical varieties: palmitic (10.9%), stearic (3.0%), oleic (23.5%) and linoleic (61.3%).
Comparing with traditional energy crops (soybean, sunflower and rapeseed) the cardoon fatty acid profile is
similar to those obtained for soybean. Several biodiesel quality parameters were calculated or estimated over
different oil samples. In this way, the acidity ranged from 0.1 to 0.7 mg OH/goil, showing differences among
accessions but not between botanical varieties. “Cardo Blanco Peralta” and A-41 (cultivated cardoon) presented
the lowest unsaturated degree, iodine values and oleic/linoleic acid relation in their oil; consequently, they
showed the most suitable values for the biodiesel quality parameters (cetane number and kinetic viscosity).
Based on seed oil composition, this characterization, allowed demonstrating that cardoon oil has appropriate
characteristics to be used as feedstock for the production of biodiesel, as well as, to detect accessions with
superior quality properties. |
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