A variety of components found in biodiesel (B100), including sugar steryls (steryl glucosides), free steryls and tocopherols, can significantly impact the properties of B100 and B100/petrodiesel blends. For example, the presence of steryl glucosides can lead to the formation of precipitants at low temperatures while tocopheros can affect oxidative stability of B100. A variety of methodolgies have been developed to characterize the main components in biodiesels, however, limited advances have been made in the characterization of trace level impurities. Discussed are characterization methods from reference steryl glucosides and filter deposits from biodiesels produced from various sources performed using silylation GC/MS.

Analytical characterization of biodiesels

241st National Meeting (2011)

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