Acetone powder from dormant seeds of Ricinus communis L |
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Authors: | Cavalcanti Elisa D. C. Maciel Fábio M. Villeneuve Pierre Lago Regina C. A. Machado Olga L. T. Freire Denise M. G. |
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Affiliation: | Federal University of Rio de Janeiro, Rio de Janeiro, Brazil. |
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Abstract: | The influence of several factors on the hydrolytic activity of lipase, present in the acetone powder from dormant castor seeds (Ricinus communis) was evaluated. The enzyme showed a marked specificity for short-chain substrates. The best reaction conditions were an acid medium, Triton X-100 as the emulsifying agent and a temperature of 30 degrees C. The lipase activity of the acetone powder of different castor oil genotypes showed great variability and storage stability of up to 90%. The toxicology analysis of the acetone powder from genotype Nordestina BRS 149 showed a higher ricin (toxic component) content, a lower 2S albumin (allergenic compound) content, and similar allergenic potential compared with untreated seeds. |
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