Anisakis is a parasite found in marine seafood such as mackerel, horse mackerel, Pacific saury, sardine, salmon, and squid. Consuming these seafood items raw can allow Anisakis larvae to invade the human stomach or intestinal walls, causing symptoms such as abdominal pain and vomiting.

Do Vinegar, Salt, Soy Sauce, and Wasabi Kill Anisakis?: food safety image
Do not judge raw-food safety from an image alone; check labeling, temperature, time, and handling conditions.
## Conclusion Using vinegar, salt, soy sauce, or wasabi will not kill Anisakis larvae.

Procedures and Key Points

  • Heat Cooking:

    • Larvae are instantly killed at temperatures above 70°C (158°F).

  • Freezing Treatment:

    • Freezing at -20°C (-4°F) or lower for at least 24 hours kills the larvae.

  • Marination with Vinegar or Salt (Suzume or Shiojime techniques):

    • These methods are primarily for flavoring and improving shelf life, not for Anisakis control.

  • Usage of Soy Sauce and Wasabi:

    • These do not have effects that kill Anisakis larvae.

Precautions

  • When eating raw fish, it is recommended to remove the internal organs and visually inspect to eliminate Anisakis larvae.

  • Upon purchasing fish, promptly remove internal organs and store the fish in a refrigerator at 4°C (39.2°F) or below.

Pre-Publication Checks

  • The risk of Anisakis can vary depending on fish species and storage conditions. Before purchasing or preparing fish, check trustworthy sources for the latest information.

Summary

To avoid the risk of Anisakis infection, proper handling and storage of fish intended for raw consumption are essential. Adequate heat cooking or freezing is necessary. Marinating with vinegar or salt, and using soy sauce or wasabi alone, cannot completely eliminate the risk of Anisakis.

References

  • Preventing Food Poisoning Caused by Anisakis｜Ministry of Health, Labour and Welfare

  • Anisakiasis - Infectious Diseases - MSD Manual Professional Edition

  • Anisakis｜’Food Safety Window’ Tokyo Metropolitan Health and Medical Bureau

  • Anisakiasis｜National Institute of Infectious Diseases, Japan

  • Parasites (Anisakis)｜Hiroshima City Official Website