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VALLARAI (CENTELLA ASIATICA)
Common names
Tamil- Vallarai
Sanskrit - Mandukaparni
Hindi - Brahmamanduki - Gotu Kola
English - Indian Pennywort
Unani - Khulakudi
Bengali - Tholkuri
Malayalam - Muttil
Gujarati - Karbrahmi
Japanese - Tsubokura
Tibetan - Sin-mnar
There is some confusion with regard to Vallarai and Brahmi, as they have similar appearance, properties, synoymns and lack of textual descriptions. Careful study of the texts clearly indicate that they are two different plants. Traditionally, both the products are recognised as being promoters of mental facilities. But Brahmi is assigned a more specific role in treating mental diseases like insanity, anxiety, depression and epllepsy, while Vallarai improves mental function through its more general rasayana effect.
In this article the following aspects are discussed
• Chemical Constituent
• Application Details
• Cultivation Practices
• Imports
• Exports
• Extraction Process
• Process Description
• Specification of Extract
• Driving Factors for Demand
• Consumption Pattern and Assessment of Demand
• Factors influencing the position for a new industry and recommendations
STUDY ON GARLIC
The British have taken to the smell and taste of garlic as never before, with few people finding its flavour strange or foreign. But in Britain, as in other countries, there is also increasing interest in how Allium sativum, which belongs to the same family of plants as onions, chives and shallots, might protect individuals against a range of diseases, particularly those that strike during the winter.
There is a long held belief that the broken down constituents of garlic can protect against heart disease by thinning the blood and helping to lower cholesterol. This could, according to researchers, reduce the risk of clotting and raised blood pressure during cold spells.
The blood thickens when exposed to cold weather, because the tiny blood vessels near the extremities contract to prevent loss of too much body heat. This leads to a more sluggish circulation and for those at risk, an increased chance of clotting. Sticky blood in the 48 hours after a cold spell is a little known cause of heart attacks, according to a European survey, which also disclosed that the British are particularly at risk. So, in theory, a regular intake of garlic - in the form of a supplement or eating it raw in salads or dressings - could be along with a flu jab, a major preventive strategy.
But it is important to eat the garlic swiftly -- its potency fades the more it is exposed to light, so young bulbs have greater health benefits. Garlic pills or powders are useful for those concerned about odour. Garlic has long been used to prevent a variety of infections.
The Romans are said to have marched into Britain on a diet of garlic to comb at our bronchitis-inducing mists and fogs. Today, hundreds of new studies are investigating its power to combat bacterial, fungal and possibly, even viral infections.
Supplements such as Hofels One a Day garlic pearls, each of which contains the essential oil from 2g of fresh raw garlic, are licensed under the Medicine Act as a treatment for colds and flue. Research also suggests that garlic in this form can prevent the development of more serious secondary infections, such as bronchitis or pneumonia, after a cold or flue.
In effect, this ancient remedy, with its apparently infinite range of benefits, is a Do-It Yourself (DIY) mini-medicine chest.
Some studies suggest that garlic also helps to protect against helicobacter, the leading cause of stomach ulcers; others that its anti oxidant effects increase production of anti aging chemicals. There are even garlic pills for cats and dogs and the French sometimes feed them to their horses to protect them from disabling clots that can form around the joints, while trainers in Ireland often give their race horses garlic and honey.
Garlic's benefits are attributed to the production of the chemical allicin, produced when garlic is crushed or chewed. This substance breaks down into sulphur and other beneficial compounds.
Sulphur based drugs, followed by antibiotics, have largely superseded the more homely garlic as away of treating some ailments. Although the British Heart Foundation was initially excited by the possible relationship between garlic and relatively low rates of coronary disease, it is now more cautious, says Belinda Linden, the BHF's cardiac nurse. "Many of the studies on the value of garlic in reducing total cholesterol levels are not conclusive," she says.
Scientists at Oxford University who have examined many previous experiments into the health benefits of garlic recently concluded that there were shortcomings in the way some of the tests had been conducted.
Many doctors continue to advise heart patients to take garlic tablets as a precaution. But in other cases, cardiologists are more sceptical. When it comes to fighting infections, the force of evidence, despite strong anecdotal reports, has yet to convince mainstream scientists of garlic's benefits. That could change, however, with some early signs that garlic might play a part in the battle against antibiotic resistant bacteria. Two patients at the Royal London Hospital, who were seriously ill with Vancomycin resistant staphylococcus aureus (VRSA), are believed to have recovered after being given 10 capsules daily of Allimax, a stable form of allicin.
Allicin is a very small molecule and is able to penetrate into the cell wall. In effect, it consumes the protein and enzymes without which the bacteria cannot reproduce." Further studies with allicin -- using nurses as volunteers -- are on by researchers at the University of East London.
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