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Tomato
Lycopersicon esculentum
The tomato that first reached
Europe in 1523, brought from the New World by the
Spanish, bore little, if any, resemblance to the uniformly glossy,
scarlet globes used in modern kitchens. Small, yellow, ridged and
flattened, almost star-like in shape, this little native of the Andes
was regarded, along with its cousin the potato, with a great deal of
suspicion, as they are members of the poisonous Solanum family, which
includes the Deadly nightshade; and its Latin name, Lycopersicon esculentum
or edible wolf's peach bears more than a little echo of
this doubt, perhaps.
Not all its European names are derogatory, however.
Its French popular name was pomme damour, love apple,
endured for centuries and was shortened from the original, more
mundane, pomo dei Mori, apple of the Moors, in line with their
tradition of seeing every new and exotic fruit as an aphrodisiac.
The Italians still call it Pomodoro or golden
apple, a name logically arrived at, considering that tomatoes
were originally yellow in colour, before early genetic engineering
methods altered them to the red we expect today.
The name tomato is derived
from the Aztec word meaning plump fruit, tomatl.
However, they also used it, prefixed with xi- for the forebear of the tomato
with which we are familiar and the prefix mil- to describe the
Mexican husk tomato, or tomatillo, small tomato, (Physalis ixocarpa),
which is a very important flavouring component in Central American
cooking. The Spanish ignored the prefixes, calling both tomate,
causing a little confusion for a while.
There has also been some confusion as to whether the tomato
is actually a fruit or vegetable. In the 18th century, botanists
specified that a fruit is the organ derived from the ovary and
surrounding the seeds.
Unfortunately, at the end of the 19th century, the
U.S. Supreme Court officially turned this scientific classification
on its head when it designated the fruit to be a vegetable, at the
end of a case in which a New York produce importer lost his battle
with the Customs authorities. He argued that, as a fruit, the tomato
was not subject to import duty. However, the Court ruled against him
on the grounds of linguistic custom, citing that tomatoes ....are
usually served at dinner in, with or after the soup, fish or meat,
which constitute the principle part of the repast, and not, like
fruit, generally as dessert .
Interestingly, even the Ministery of Agriculture,
Farming and Fisheries in the UK, list the tomato as
a vegetable, presumably on this same rule of linguistic
custom - Botany? Schmotany, as they might say in Queens.
Its acceptance at the table was quite slow, and after
a fairly short flirtation with the court tables in Elizabethan
England it was dismissed almost generally as a nasty, sour little
thing that was liable to make one sick.
Ironically, the tomato was
seen as little more than an ornamental plant in North America too and
was not cultivated as a food crop there until well after the
Declaration of Independence.
By the mid-nineteenth century, however, attitudes, and
the tomato, seemed to have changed markedly,
and Mrs Isabella Beeton simply glowed with
approval in 1859 when she wrote, In this country it is much
more cultivated than it formerly was; and the more the community
becomes acquainted with the many agreeable forms in which the fruit
can be prepared, the more widely will its cultivation be extended.
For ketchup, soups, and sauces, it is equally applicable and the
unripe fruit makes one of the best pickles. The late twentieth
century finds it even more in favour as nutritionists and modern
science discover more about its chemistry. Studies at Ben Gurion
University in Israel have found that the carotenoid Lycopene, found
in tomatoes, may be effective in helping to
protect against cancer, heart disease and degenerative eye disease,
and that these antioxidant elements are more readily absorbed into
the bloodstream when the tomatoes are cooked
with an oil high in monounsaturates, such as olive.
Perhaps yet another reason that the so-called Mediterranean
Diet is associated with reduced risk of heart
disease and some cancers, such as cancers of the cervix, prostate,
bladder and pancreas.
In its natural form, Lycopene has been found to be the
most potent antioxidant discovered to date and that it helps to
prevent the formation of oxidised LDL or bad cholesterol
which can build up as arterial plaque, leading to heart attack and
stroke. Separate studies on a group of 47,000 adult males by
researchers at Harvard University in the USA over a period of six
years have found that Lycopene seems to activate DNA damage control.
The research group there suggest a possible 40-45% decrease in the
risk of prostate cancer in men who eat at least 10 servings a week of tomato-based
foods. Even better news is the fact that Lycopene seems unaffected by
processing and is also present in tomato
products such as tomato juice, purées, passata and pastes.
Tomato is also high in the
natural immune booster, vitamin C; an average 100g serving contains
22mg - more than one third of the RDA for non-smokers and lg fibre,
which may help to prevent cancers of the colon and rectum.
Chinese medicine recommends one tomato
sweetened with sugar for bleeding gums and, for all those
morning after the night before sufferers, one to two tomatoes,
first thing in the morning, taken on an empty stomach is recommended
for those bloodshot eyes.
There is a down side, though, the salicylates which
are also found in tomatoes and other
nightshades, may trigger a painful reaction in arthritis and gout sufferers.
100g raw tomatoes give 17
kcalories energy, 0.7g protein, 0.3g fat, 3.1g carbohydrate, 3.1g
sugars, 1.0g fibre, 7mg calcium, 0.5mg iron, 9mg sodium, 105 µg
vitamin A, 0.09mg thiamin, 17mg vitamin C. |