A Comparison of the Nutrient and Antinutrient Composition of Industrially Processed Zimbabwean Jatropha curcas and Glycine max Meals

Chivandi, Eliton; Kachigunda, Barbara; Fushai, F

doi:10.3923/pjbs.2005.49.53

Cited by 10 publications

(1 citation statement)

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“…There are several already published studies on the detoxification of Jatropha curcas cake using organic solvents and chemical treatments, for example, hexane, methanol, petroleum ether and potassium hydroxide (Aregheore et al, 2003;Chivandi et al, 2005;Martinez-Herrera et al, 2006;Nokkaew et al, 2008;Devappa et al, 2010;Kumar et al, 2010). However, the authors reveal that these techniques are not economically feasible and the multiple steps involved in the biomass processing until the detoxification stage are also costly and not environmentally friendly.…”

Section: Introductionmentioning

confidence: 92%

Technical and Economic Evaluation of Phorbol Esters Extraction from Jatropha Curcas Seed Cake using Supercritical Carbon Dioxide

Pereira¹,

Pessoa²,

Mendonça³

et al. 2016

AJBB

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Jatropha curcas plant shrub of Euphorbiaceae family is a plant whose seeds are rich in oil that can be used for biofuel production. However the seeds contain many toxic compounds which the most important ones are known as phorbol esters (PEs). This study has as aim the study of the technical and economic feasibility of the supercritical fluid to extract the PEs present in the Jatropha seed cake. The effect of temperature (40 -100 ºC) and pressure (100 -500 bar) on the phorbol yield was investigated using a central composite design methodology to determine the significance and interactions of these parameters. PEs in the extracted samples were analyzed and quantified by HPLC. The supercritical fluid extraction was effective in the PE extraction from Jatropha curcas cake varying from 23.0%, at 70 ºC and 500 bar to 2.6% at 90 ºC and 160 bar. The results showed that pressure had the most significant enhancing effect on the phorbol ester yield. Simulations of phorbol ester extraction from Jatropha curcas cake were carried out using SuperPro Designer 9.0 to evaluate the production costs of an industrial process to treat the necessary quantity of cake. It was possible to conclude that the supercritical extraction is a promising technology that can be applied to detoxify the Jatropha curcas cake.

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