Page 37 - 2020Taiwan Food and Drug Administration Annual Report

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Dr. Susanne Ekroth from the Swedish National Food Agency, and Professor Gu GuoLong from
department of Applied Chemistry, National Chiayi University to conduct special lectures on
analytical methods of pesticide residue and multiple analysis technique. A total of 86 research
papers were published, including 14 oral presentations and 72 posters. It is expected to enhance
the inspection capabilities of central, local and private laboratories, with the interaction and
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II. Developed relevant inspection methods for high-risk and high-interest
items related to people's livelihood
(I) Establish the methods for testing dioxin and dioxin-like polychlorinate biphenyls residues
in hairy crabs

TFDA published “Method of Test for Residual Dioxins and Dioxin-Like Polychlorinated
Biphenyls in Hairy Crabs (GC-MS/MS Method);” with the liquid-liquid extraction
instead of the conventional freeze-dry and Soxhlet extraction, the test time was shortened
from 6 days to 4 days which will help speed up the customs clearance of imported hairy
crab at the borders to reduce the illegal selling of the products due to the short product
shelf life.
(II) Developed the test methods for hydrocyanic acid in cassava products

If the linamarin in cassava was not handled properly, it may cause poisoning as the
hydrocyanic acid may be generated in the gastrointestinal tract after intake. TFDA has
developed and revealed two inspection methods such as the use of High Performance Ion
Chromatograph (HPIC) with electrochemical detector, or the use of High Performance
Liquid Chromatograph (HPLC) with fluorescence detector for the analysis of total
hydrocyanic acid in cassava products. We conducted the inspection projects at borders
and small scale post-market inspection and the inspection results indicated that imported
cassava chips have a high risk of cyanic acid residues and hence we increased the
sampling rate of cassava chips at borders to prevent the risk from entering the country.

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