The oil content of HM seed was 71.65 wt%, which is much higher
than that of many potential oil plants. With traditional base-catalyzed
transesterification, biodiesel was readily prepared from HM
seed oil. The biodiesel yield was 95.46 wt% from HM seed oil. Most
fuel properties of HM biodiesel satisfied ASTM D6751 and EN
14214 standards, with the exception of OS, which did not meet
the EN 14214 requirement. The transportation safety and cold flow
properties of HM biodiesel were excellent, with FP of 153 C, PP of
9 C, and CFPP of 7 C. After treatment with 400 ppm TBHQ, the
OS of HM biodiesel satisfied the specifications of EN 14214 (6 h).
Overall, Hodgsonia macrocarpa is a potential low cost and high
quality feedstock for biodiesel production in southwest China and
other subtropical regions.