Abstract
Lectin activity in a toxic (Cape Verde) and non-toxic (Mexico) variety of Jatropha curcas seed meal was investigated using latex agglutination and haemagglutination assays. Lectin activity expressed as reciprocal of the minimum quantity (in mg) of Jatropha meal per ml of the assay mixture which produced agglutination with the latex beads was 2·88 ± 0·57 and 1·71 ± 0·00 (mean ± SD, n = 3) for the toxic and the non-toxic varieties, respectively, which did not differ significantly (P > 0·05), while with the haemagglutination assay these values were 102 and 51, respectively, and differed significantly (P < 0·05). The lectins were inactivated by heating and moist heat was more effective than dry heat. The results suggest that lectins may not be responsible for short term toxicity caused by consumption of raw Jatropha meal. © 1998 SCI.
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