Subject:  Herbs have high antioxidant effect


Parsley, sage, rosemary and thyme may cut cancer risk
Monday, January 07, 2002

from CancerFacts.com

BELTSVILLE, MD. -- JAN. 7, 2002 -- Better health may be only a dash and sprinkle away. Researchers with the U.S. Department of Agriculture have found that herbs, in addition to making food tastier, are an abundant source of antioxidants and could provide potential anticancer benefits when added to a balanced diet.
Herbs have higher antioxidant activity than fruits, vegetables and some spices, including garlic, the researchers say. Their findings appear in a recent (Nov.) print issue of the Journal of Agricultural and Food Chemistry, the scientific journal of the American Chemical Society.

"Some herbs should be considered as regular vegetables," says Dr. Shiow Y. Wang, the study's lead researcher and a biochemist with the USDA's Beltsville Agricultural Research Center in Beltsville, Md. "People should use more herbs for flavoring instead of salt and artificial chemicals."

Using various chemical tests, Wang studied and compared the antioxidant activity of 39 commonly used herbs grown in the same location and conditions. The study, which did not involve animal or human subjects, included 27 culinary and 12 medicinal herbs.

In what may be good news for pizza lovers and Italian food connoisseurs everywhere, the herbs with the highest antioxidant activity belonged to the oregano family. In general, oregano had 3 to 20 times higher antioxidant activity than the other herbs studied, says Wang.

On a per gram fresh weight basis, oregano and other herbs ranked even higher in antioxidant activity than fruits and vegetables, which are known to be high in antioxidants. In comparison to the antioxidant activities of a few select fruits and vegetables, the potency of oregano ranks supreme: Oregano has 42 times more antioxidant activity than apples, 30 times more than potatoes, 12 times more than oranges and 4 times more than blueberries, Wang says.

For example, one tablespoon of fresh oregano contains the same antioxidant activity as one medium-sized apple, she says.

Adding a moderate amount of herbs may go a long way toward boosting the health value of a meal, especially as an alternative to salt and artificial additives, the researcher suggests.

Even if you're not into oregano, other herbs also appear to pack a significant antioxidant punch. Among the more familiar, ranked in order, are dill, garden thyme, rosemary and peppermint.

The most active phenol component in some of the herbs with the highest antioxidant activity, particularly oregano, was rosmarinic acid, a strong antioxidant, the researcher says.

Antioxidants are a class of compounds thought to prevent certain types of chemical damage caused by an excess of free radicals, charged molecules that are generated by a variety of sources. Researchers believe destroying free radicals may help fight some cancers, heart disease and stroke.

Fruits and vegetables have long been viewed as a rich source of antioxidant compounds. Health officials have been urging consumers for years to eat more fruits and vegetables in order to gain the health benefits of antioxidants, but progress has been slow, according to researchers. Westerners still tend to favor diets that are rich in fats and carbohydrates, they say.

Just as consuming too much of any food product can carry health risks, herbs should be used with moderation, Wang says.

"Whatever form they take, herbs are no substitute for a balanced diet," Wang says. "Pregnant women in particular should consult their physicians before taking herbal supplements."

Copyright © 2001 NexCura, Inc. All rights reserved. Republication


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