Taiwan updates US potato import rules, allows sorting of sprouted produce

TAIWAN – Taiwan has updated its quarantine protocol for imported processing potatoes from the United States, allowing shipments with sprouting, rot, or mould to enter, provided affected potatoes are sorted out and disposed of at processing facilities.

Since 2018, entire shipments showing any signs of damage have been rejected.

The revised rules, adopted in February 2026, align import standards with domestic safety limits. Imported potatoes must contain no more than 200 parts per million of solanine, a toxic glycoalkaloid found in sprouted potatoes, in line with Taiwan’s domestic standards.

For global potato trade dynamics, these changes reduce trade friction by eliminating the all-or-nothing rejection approach. Processors can now accept shipments with minor defects, sorting out affected tubers rather than discarding entire containers.

As a result, this aligns Taiwan’s protocol with Japan’s standards, creating more consistent requirements for US exporters serving multiple Asian markets.

However, the logistical challenges of on-site sorting and waste disposal are significant. If imported processing potatoes show signs of sprouting, rot, or mould, the Food and Drug Administration is notified, and shipments are directed to designated processing plants.

At these facilities, affected potatoes must be removed and destroyed in accordance with standard operating procedures. Even after passing border checks, any potato with sprouts exceeding 0.5 centimetres at the processing stage must be excluded from production.

The system combines border inspection with processing-level sorting to uphold agricultural and food safety standards.

In addition, imported potatoes must meet requirements for pest control, sprout inhibition, solanine levels, and pesticide residues. A triple-layer safety system comprises pre-arrival sprout prevention, removal of affected potatoes before processing, and random testing for contaminants in the domestic market.

However, the Chinese Nationalist Party caucus raised concerns about inspection capacity, questioning whether all imported potatoes can be inspected individually.

The Democratic Progressive Party caucus noted that there are three layers of food safety controls protecting consumers. Existing restrictions remain in place, including a ban on potatoes carrying any of eight specified pests and diseases.

For fresh-produce investors and logistics operators, Taiwan’s revised protocol shows how regulatory frameworks can evolve to balance trade efficiency with food safety.

Therefore, the shift from full rejection to targeted removal reduces waste and improves supply-chain predictability while maintaining safety standards.

The updated rules apply specifically to the processing of potatoes, not to table stock, which remains subject to separate quarantine requirements.

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