AGRICULTURE REPORT - Irradiated Meat

（单词翻译）

AGRICULTURE REPORT December 17, 2002 — Irradiated Meat

This is the VOA Special English Agriculture Report.

The United States government has approved methods of destroying bacteria in meat by using
radiation. The government says using radiation to kill harmful organisms¹ in meat is safe. The
World Health Organization also supports the use of irradiation to control food-related sickness
caused by dangerous organisms.

On average, there are more than three-million cases of food-related sicknesses each year in
America. About one-thousand-six-hundred deaths are reported. However, studies for the The radura is the
international Department of Agriculture say that harmful organisms in food cause as many as seventy-sixsymbol for million sicknesses each year in the United States. Eighty-one percent of these sicknesses have
irradiated food. unknown causes.

Food irradiation can be done in three ways. One process uses a radioactive² device³
made of the elements cobalt or cesium. These substances produce energy called
gamma rays. Meat is exposed to gamma rays in a protected space surrounded by thick
walls. The food is taken out of the space when it has been exposed to enough
radiation. The gamma ray device is always radioactive so it must be stored in a large
tank of water.

Another process uses a device similar to one found in televisions. It is called an
electron⁴ gun. It fires a stream of electrons⁵ strong enough to kill harmful organisms in
the food. A newer process uses X-rays to kill bacteria.

The amount of radiation used in some of these processes may be surprising. For example, the energy necessary to
kill the bacterium⁶ salmonella in chicken is seven-million times greater than that used when a person gets a chest
X-ray. The World Health Organization says that radiation levels are safe and do not change food in any important
way.

However, the Department of Agriculture has done studies on public support for irradiated food in the United
States. Recent studies show that public support is decreasing.

The government also found that the high cost of irradiating meat may affect its popularity⁷. Studies estimate⁸ that it
could cost between five and seventeen-million dollars a year for each factory that uses irradiation. Yet, irradiation
does not protect meat from harmful organisms while it is processed in stores or in homes. So irradiated meat
would still require careful preparation.

This VOA Special English Agriculture Report was written by Mario Ritter.

Email this article to a friend
Printer Friendly Version⁹

Irradiation is also used on
foods other than meat.