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In a multicenter study conducted by the Indian Council of Medical Research, 1,646 samples of wheat grain collected from rural and urban areas of 10 states representing different geographical regions of India were analyzed for aflatoxin (AFBI). AFB, concentrations of ⩾5 µg kg-1 were recorded in 40.3% of the samples, and concentrations above the Indian permissible regulatory limit of 30 µg kg-1 were found in 16% of the samples. The proportion of samples with AFB1 concentrations above the Indian regulatory limit ranged from 1.7 to 55.8% in different states, with the minimum in Haryana and the maximum in Orissa. The variation in wheat contamination among states seems to be mainly the result of unsatisfactory storage conditions. Median AFB1 concentrations of 11, 18, and 32 µg kg-1 were observed in samples from Uttar Pradesh, Assam, and Orissa, respectively; concentrations in other states were <5 µg kg-1. The maximum AFB1 concentration of 606 µg kg-1 was observed in a sample from the state of Uttar Pradesh. The calculated probable daily intakes of AFB, through consumption of contaminated wheat for the population in some states were much higher than the suggested provisional maximum tolerable daily intake. Human health hazards associated with such AFB1 exposure over time cannot be ruled out. [ABSTRACT FROM AUTHOR]

Under a multi-centre study conducted by the Indian Council of Medical Research, 1511 samples of parboiled rice were collected from rural and urban areas of 11 states representing different geographical regions of India. These samples were analysed for contamination with aflatoxin B 1. The presence of aflatoxin B 1 at levels?=?5?µg?kg -1 was found in 38.5% of the total number of samples of the parboiled rice. About 17% of the total samples showed the presence of aflatoxin B 1 above the Indian regulatory limit of 30?µg?kg -1 . No statistically significant difference in percentage of samples contaminated with >30?µg?kg -1 was observed between pooled rural (19.4%) and urban (14.5%) data. A median value of 15?µg?kg -1 of aflatoxin B 1 was observed in samples from Assam, Bihar and Tripura. In all other states surveyed the median value was [ABSTRACT FROM AUTHOR]

Under a multi-centre study conducted by the Indian Council of Medical Research, 1,511 samples of parboiled rice were collected from rural and urban areas of 11 states representing different geographical regions of India. These samples were analysed for contamination with aflatoxin B(1.) The presence of aflatoxin B(1) at levels=5 microg g(-1) was found in 38.5% of the total number of samples of the parboiled rice. About 17% of the total samples showed the presence of aflatoxin B(1) above the Indian regulatory limit of 30 microg kg(-1). No statistically significant difference in percentage of samples contaminated with >30 microg kg(-1) was observed between pooled rural (19.4%) and urban (14.5%) data. A median value of 15 microg kg(-1) of aflatoxin B(1) was observed in samples from Assam, Bihar and Tripura. In all other states surveyed the median value was <5 microg?kg(-1).