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Proceedings Paper

Rapid nondestructive selection of peanuts for high aflatoxin content by soaking and tandem mass spectrometry
Author(s): Thomas F. Schatzki; William F. Haddon
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Paper Abstract

Peanut lots are subject to aflatoxin levels high enough to cause concern to health agencies and trade channels. A possible solution would be to mechanically sort out high aflatoxin nuts from the process stream. Only highly contaminated nuts need be removed. However, there exists at present no sorting mechanism which meets commercial needs of adequate reduction and product preservation. To build such a sorter requires knowledge ofthe properties which can be used for sorting. The first step in the design is to select of order of one hundred undamaged contaminated nuts which can be compared with non-contaminated ones. Because contaminated nuts are rare, a very large number of nuts need to be examined non-destructively. We present a method to rapidly carry out such a selection. The method is based on dipping nuts into extraction fluid and examining the resulting fluid by MS-MS without preliminary clean-up. This method has been applied to examine over 65,000 nuts, yielding approximately 120 nuts, each containing more than 250-8000 ng/g aflatoxin (depending on process stream).

Paper Details

Date Published: 13 March 2001
PDF: 13 pages
Proc. SPIE 4206, Photonic Detection and Intervention Technologies for Safe Food, (13 March 2001); doi: 10.1117/12.418734
Show Author Affiliations
Thomas F. Schatzki, U.S. Department of Agriculture (United States)
William F. Haddon, U.S. Department of Agriculture (United States)


Published in SPIE Proceedings Vol. 4206:
Photonic Detection and Intervention Technologies for Safe Food
Yud-Ren Chen; Shu-I Tu, Editor(s)

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