Genetic variability of biodiesel properties in some Prunus L. (Rosaceae) species collected from Inner Mongolia, China

The aim of this study was to compare the oil content, fatty acid composition, and biodiesel properties of eight Prunus L. species in Inner Mongolia, to provide a basis for selecting appropriate species to produce biodiesel. In the eight species, oil content ranged from 38.92% to 58.82%. In Prunus pedunculata Pall., Prunus sibirica L., Prunus mongolica Maxim., Prunus humilis Bunge, Prunus ansu Kom., and Prunus triloba Lindl., oil contents were higher than 45%. Percentages of fatty acids varied greatly among different species, but all species contained a large percentage of critical oleic acid (35.03-77.02%). The biodiesel properties of seed kernel oil methyl ester of the eight species were determined and compared with the relevant specifications of ASTM D6751, EN 14214, and GB/T 20828. P. triloba Lindl., P. ansu Kom., P. pedunculata Pall., and P. sibirica L. were the most efficient feedstock for biodiesel production and suitable for further use and development.