Complaint casebook Foreign matter in powdered milk

Thorn-like foreign matter was found in the powdered milk.

Stereo microscope
(Foreign matter in powdered milk)

Electron microscope 1
(Foreign matter in powdered milk)

Electron microscope, 2
(Kiwifruit hair)

• Appearance: The foreign matter was like a small brown hair of 2-3mm.
• Mirror examination: When foreign matter was observed with a scanning electron microscope with a control of kiwifruit hair, a similar structure was observed, and when foreign matter was observed with a stereo microscope, it was 2-3 mm long, 0.03-0.08 mm thick, and the tip was thin and pointed. The base was thick and characteristic pattern was observed. Its shape was similar to plant fibers, especially kiwifruit hair.

This foreign body was presumed to be kiwifruit hair. (In a later survey, it was said that after cutting the kiwi on the cutting board, it was mixed when making powdered milk on it.)

Published on March 8, 2007