Capsanthin and capsaicin, the colouring and pungent principles of red chilli Capsicum annum, respectively, were tested against the growth and aflatoxin producing potentials of Aspergillus flavus in SMKY liquid medium. Capsanthin completely checked both the growth and toxin production at all the concentrations viz. 0.2, 0.6 and 1.0 mg ml‐1, till the fourth day of incubation. On the 10th day growth of the fungus and toxin biosynthesis were 39 and 22% of the control, respectively, at 1.0 mg ml‐1. Capsaicin showed some inhibitory efficacy only up to the fourth day of incubation. The fungus grew thereafter with a marginal inhibition in growth at the highest concentration. The amount of the toxin in the medium was also higher.
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Dogra et al. (1994) studied this question.
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