Abstract
Abstract A rapid alternative method has been developed for dispersing cocoa press cake in preparation for light fdth analysis. The press cake is broken into pieces one-half inch or smaller and mechanically stirred in hot (150°C) peanut oil for dispersion prior to defatting with Triton X-114. Light filth is then determined by method 40.006(a). Intralaboratory studies proved the method to be faster than the existing dispersion procedures and to result in almost twice the recovery of rodent hairs. Recoveries of insect fragments were not affected. The method has been adopted as an alternative to dispersion techniques in 40.006(c).
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