Governments are taking precautions and conducting thorough inspections of Japanese food, which is popular worldwide and available at high-end stores around Asia, and specialty shops in Europe and the United States.

Hong Kong's Center for Food Safety has conducted radiation tests on at least 34 samples of fresh vegetables, meat and fish from Japan. The center reports all test results were satisfactory.

"As far as radiation is concerned, I think the most at-risk articles are those fresh products, perhaps dairy products, fresh fruits and vegetables," Dr. York Chow, Hong Kong's Secretary for Food and Health, said earlier this week.

Read Nuclear crisis sparks worry over safety of Japanese food