Detoxification of aflatoxin in peanut oil on laboratory scale
1980
Sumalai Srikumlaithong | Supatra Munsakul (Thailand Inst. of Scientific and Technological Research, Bangkok (Thailand))
Detoxification of peanut oil has been successfully accomplished in lowering the aflatoxin content to less than 20 ppb by treating with Fuller's earth. Stirring the oil with 0.3 % of the earth at the speed of 150 rpm for 15 minutes effectively reduced its aflatoxin content from 76 ppb to 7.85 ppb which is below the Ministry of Public Health standard safety value requirement of 20 ppb. The chemical and physical properties of the processed oil complies with the food regulation. Two types of Fuller's earth namely, AAA and Galleon earth, were used for absorbing aflatoxin. Both types showed no significant differences in reducing the toxin. The detoxification process was highly effective and involved simple techniques. Equipments used consist of a mixing tank, locally fabricated, and a filter press as already available in a peanut oil factory. The additional cost of processing (i.e. the cost of Fuller's earth and electricity) arrived at 37.50 baht per tonne of treating oil.
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