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Fate of toxic phorbol esters in Jatropha curcas oil by a biodiesel fuel production process

Duong, Huu Huy; Imamura, Kiyoshi; Le, Tu Thanh

ISIKNOWLEDGE; http://repository.vnu.edu.vn/handle/VNU_123/26449

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  • Nhan đề:
    Fate of toxic phorbol esters in Jatropha curcas oil by a biodiesel fuel production process
  • Tác giả: Duong, Huu Huy; Imamura, Kiyoshi; Le, Tu Thanh
  • Chủ đề: Phorbol esters; Transesterification; Jatropha curcasoil (JCO); Participation
  • Mô tả: CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY Volume: 18 Issue: 7 Special Issue: SI Pages: 2305-2314 ; TNS06349
    Biodiesel fuel (BDF) is an important alternative fuel because of the carbon neutral nature of biomass and the exhaustion of fossil fuel resources. Jatropha curcasoil (JCO) produced from J. curcasseeds contains toxic phor-bol esters that can cause cancer. The behaviors of toxic phorbol esters were investigated during BDF production. Liquid chromatography–tandem mass spectrometry and photodiode array analyses revealed that the phorbol esters contained in JCO had a tigliane skeleton. The partition coefficients of phorbol esters between methanol (MeOH) and the oil (KMeOH/oil) ranged from 2.4 to 20. As a result, the phorbol esters in the JCO were largely partitioned into the MeOH phase. The phorbol esters in the oil were con-verted stoichiometrically into phorbol and the corre-sponding fatty acid methyl esters via a transesterification reaction in a potassium hydroxide (KOH)/methanol (MeOH) solution. The phorbol produced predominantly partitioned into the glycerin phase. A small amount of phorbol residue contained in the BDF could be removed by washing with water. These results suggest that it is safe to use BDF produced by the aforementioned transesterifica-tion reaction and purification process. However, phorbol contamination of glycerin and wastewater from the pro-duction process should not be ignored.
  • Nơi xuất bản: H. : ĐHQGHN
  • Năm xuất bản: 2016
  • Ngôn ngữ: English
  • Số nhận dạng: ISIKNOWLEDGE; http://repository.vnu.edu.vn/handle/VNU_123/26449

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