TY - JOUR AB - Underwater high-voltage discharges (3.5 kV) resulting in 4.9 kJ shock waves (5060 MPa) were studied at the laboratory scale as a Jatropha curcas L. seed disintegration method. Grinding and macerating in an excess of methanol (3.5:1) was advantageous because methanol acts both as a liquid carrier for the pressure shock waves and as a solvent that increases the efficiency of oil extraction while remaining usable for esterification. The influence of the number of shock waves and the intensity of methanol maceration on the heat values of the pressed cake are stated in detail. Soxhlet extraction demonstrated that a greater than 94% oil extraction was achieved. The increased disintegration of vacuoles rich in oil was documented by surface area analysis, mineralization kinetics analysis, and electron microscopy. The working volumes were small, and the proportion of energy inadequate compared to the yields released; however, much can be improved by upgrading the process. AD - Univ Ryukyus, Fac Agr, Crop Sci Lab, Ryukyus, Okinawa 9030213, Japan AN - WOS:000312542600008 AU - Marousek, J. AU - Itoh, S. AU - Higa, O. AU - Kondo, Y. AU - Ueno, M. AU - Suwa, R. AU - Komiya, Y. AU - Tominaga, J. AU - Kawamitsu, Y. DA - Nov-Dec DO - 10.1002/bab.1045 IS - 6 J2 - Biotechnol Appl Bioc KW - high-voltage discharge LA - English N1 - 057dp PY - 2012 SN - 0885-4513 SP - 451-456 ST - The use of underwater high-voltage discharges to improve the efficiency of Jatropha curcas L. biodiesel production T2 - Biotechnology and Applied Biochemistry TI - The use of underwater high-voltage discharges to improve the efficiency of Jatropha curcas L. biodiesel production UR - ://WOS:000312542600008 VL - 59 ID - 7859 ER -