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Not to consume prepackaged mushroom powder due to the presence of ethylene oxide

  • 2024.03.19
Issue Date19.3.2024
Source of Information

Centre for Food Safety (CFS)

Food Product

Prepackaged mushroom powder

Product Name and Description

Product name: Pure Oyster Mushroom Powder




Place of origin: Hong Kong


Net weight: 65 grams


Best-before date: January 20, 2025


Manufacturer: (Not available in English)

Reason For Issuing Alert
  • The CFS collected the above-mentioned sample from a retail outlet in Tsuen Wan for testing. The test result showed that the sample contained a pesticide, ethylene oxide.
  • The International Agency for Research on Cancer has classified ethylene oxide as a Group 1 carcinogen.
  • According to the Pesticide Residues in Food Regulation (Cap. 132CM), a food for human consumption containing pesticide residue may only be sold if consumption of the food is not dangerous or prejudicial to health.
Action Taken by the Centre for Food Safety
  • The CFS has informed the vendor concerned of the irregularity and instructed it to stop sales and remove from shelves the affected product.
  • According to the CFS's instructions, the manufacturer concerned has initiated a recall on the affected product.
  • The CFS will alert the trade, continue to follow up on the incident and take appropriate action. An investigation is ongoing.
Advice to the Trade
  • The trade should stop using or selling the affected product immediately if they possess it.
Advice to Consumers
  • Members of the public not to consume the affected product if they have bought any.
Further Information

The CFS press release


Members of the public may call its hotline at 9616 7734 during office hours for enquiries about the recall of the product concerned.



Photos for reference only.


Reposted from HKSAR Government webpage: