Thursday, August 25, 2011

Coriander oil could tackle food poisoning and drug-resistant infections such as E. Coli



Coriander is considered both an herb and a spice since both its leaves and its seeds are used as a seasoning condiment. Fresh coriander leaves are more commonly known as cilantro and bear a strong resemblance to Italian flat leaf parsley.
Coriander oil has been shown to be toxic to a broad range of harmful bacteria. Its use in foods and in clinical agents could prevent food-borne illnesses and even treat antibiotic-resistant infections, according to the authors of a study published in the Journal of Medical Microbiology.
The researchers from the University of Beira Interior in Portugal tested coriander oil against 12 bacterial strains, including Escherichia coli, Salmonella enterica, Bacillus cereus and meticillin-resistant Staphylococcus aureus (MRSA). Of the tested strains, all showed reduced growth, and most were killed, by solutions containing 1.6% coriander oil or less.
Coriander is an aromatic plant widely used in Mediterranean cuisine. Coriander oil is one of the 20 most-used essential oils in the world and is already used as a food additive. Coriander oil is produced from the seeds of the coriander plant and numerous health benefits have been associated with using this herb over the centuries. These include pain relief, ease of cramps and convulsions, cure of nausea, aid of digestion and treatment of fungal infections.
This study not only shows that coriander oil also has an antibacterial effect, but provides an explanation for how it works, which was not previously understood. “The results indicate that coriander oil damages the membrane surrounding the bacterial cell. This disrupts the barrier between the cell and its environment and inhibits essential processes including respiration, which ultimately leads to death of the bacterial cell,” explained Dr Fernanda Domingues who led the study.
The researchers suggest that coriander oil could have important applications in the food and medical industries. “In developed countries, up to 30% of the population suffers from food-borne illness each year. This research encourages the design of new food additives containing coriander oil that would combat food-borne pathogens and prevent bacterial spoilage,” said Dr Domingues. “Coriander oil could also become a natural alternative to common antibiotics. We envisage the use of coriander in clinical drugs in the form of lotions, mouth rinses and even pills; to fight multidrug-resistant bacterial infections that otherwise could not be treated. This would significantly improve people’s quality of life.”
Further More on Coriander…
Coriander is considered both an herb and a spice since both its leaves and its seeds are used as a seasoning condiment. Fresh coriander leaves are more commonly known as cilantro and bear a strong resemblance to Italian flat leaf parsley. This is not surprising owing to the fact that they belong to the same plant family (Umbelliferae).
The fruit of the coriander plant contains two seeds which, when dried, are the parts that are used as the dried spice. When ripe, the seeds are yellowish-brown in color with longitudinal ridges. They have a fragrant flavor that is reminiscent of both citrus peel and sage. Coriander seeds are available in whole or ground powder form.
The name coriander is derived from the Greek word koris, which means bug. It may have earned this name because of the “buggy” offensive smell that it has when unripe. The Latin name for coriander is Coriandrum sativum.
Health Benefits of Coriander/Cilantro Leaf
Coriander seeds have a health-supporting reputation that is high on the list of the healing spices. In parts of Europe, coriander has traditionally been referred to as an “anti-diabetic” plant. In parts of India, it has traditionally been used for its anti-inflammatory properties. In the United States, coriander has recently been studied for its cholesterol-lowering effects.
Control of Blood Sugar, Cholesterol and Free Radical Production
Recent research studies (though still on animals) have confirmed all three of these healing effects. When coriander was added to the diet of diabetic mice, it helped stimulate their secretion of insulin and lowered their blood sugar. When given to rats, coriander reduced the amount of damaged fats (lipid peroxides) in their cell membranes. And when given to rats fed a high-fat, high-cholesterol diet, coriander lowered levels of total and LDL (the “bad” cholesterol), while actually increasing levels of HDL (the “good” cholesterol). Research also suggests that the volatile oils found in the leaves of the coriander plant, commonly known as cilantro, may have antimicrobial properties.
A Phytonutrient-Dense Herb
Many of the above healing properties of coriander can be attributed to its exceptional phytonutrient content. Coriander’s volatile oil is rich in beneficial phytonutrients, including carvone,geraniollimoneneborneolcamphorelemol, and linalool. Coriander’s flavonoids include quercitinkaempferolrhamnetin, and epigenin. Plus, coridander contains active phenolic acid compounds, including caffeic and chlorogenic acid.
Nutrient As Well As Phytonutrient-Dense
Not only is coriander replete with a variety of phytonutrients, this exceptional herb emerged from our food ranking system as an important source of many traditional nutrients. Based on our nutrient density ranking process, coriander qualified as a very good source of dietary fiber and a good source of iron, magnesium and manganese.
Spice Up Your Life and Subdue the Salmonella
Coriander (also called cilantro) contains an antibacterial compound that may prove to be a safe, natural means of fighting Salmonella, a frequent and sometimes deadly cause of foodborne illness, suggests a study published in the June 2004 issue of the Journal of Agriculture and Food Chemistry.

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