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Why is Ceylon Tea different?
Tea originated in China, as legend
has it, 5,000 years ago, yet it was Ceylon (now Sri Lanka) that
made tea famous in the 19th and 20th Centuries, as the tea that
was used by almost every major tea brand. Ceylon Tea is prized
for its quality which is without parallel, and its variety which
is unmatched for a small island boasting dramatically different
teas in different parts of its tea growing regions.
In assessing the value of Ceylon
tea, some of the properties which tea experts take into consideration
are appearance of the made tea, colour of the infused leaf, as
well as colour, strength, quality, aroma and flavour of the brewed
liquor. The ultimate criterion of a 'good quality' tea is however
the the subjective assessment of expert professional tea tasters.
Distinguishing itself as the 'Best
in Class' producer of tea, with a well documented heritage in
tea, Ceylon, or Sri Lanka stands out amongst tea producers. The
Low Grown teas produced in Sri Lanka below 2000-ft sea level,
are known for their superior leaf appearance, highly valued in
the Middle East, the coppery 'infused leaf' and its strong &
reddish brewed liquor. Sri Lankan low growns are prized for their
appearance -'uniformly black', true to grade and devoid of fibre
and extraneous matter. The High Growns, above 4000-ft sea level,
on the other hand are known for their bright, coloury, brisk and
aromatic liquors. High grown Ceylon teas do not share the dense,
black colour of the quality low grown leaf being browner in leaf
appearance, but have unsurpassed liquors ranging from light, bright
golden colour to deep red.
In Ceylon, particular emphasis
is laid on the quality of tea, and this is determined by a complex
of parameters, the correct balance of which is the quintessence
of tea character. The appearance of the leaf (dry leaf after processing)
is determined by the content of chlorophyll in the young and tender
leaves of the tea shoot. The relative amounts of the polyphenols
present in tea, the polyphenol oxidase (enzyme), the theaflavins,
thearubigins, caffeine, essential oils, sugars, amino acids in
the bud and the first two tender leaves will all contribute to
the quality of the brewed liquor in a positive way. Hence the
importance of traditional and disciplined picking of teas in Ceylon.
The best raw material handled under poor conditions of manufacture
would produce a poor quality tea. It is through attention to detail
in field practices as well as in manufacture, that Sri Lanka retains
its position as the Best in Class' producer of Quality Tea, considered
by the Technical Committee of the ISO as the cleanest tea in the
world.
How much
caffeine
is there in tea ?
Caffeine from natural sources has been consumed and enjoyed by
humans throughout the world for centuries. The widespread natural
occurrence of caffeine in a variety of plants undoubtedly played
a major role in the long-standing popularity of caffeine incorporated
products, especially the beverages.
The human body requires a certain amount of caffeine and research
indicates that up to 10 - 12 cups of tea daily will not have any
detrimental effect on the body. The species or the variety of
the tea plant determines content of caffeine in tea, as it is
a genetic feature. Camellia Sinensis, the variety that is grown
in Sri Lanka has caffeine levels of approximately 2.5 - 4%. However
the distribution of caffeine in the plant depends on the part
of the plant it is derived from.
For example:
| Bud |
4.70 % |
| First leaf |
4.20 % |
| Second Leaf |
3.50 % |
| Third Leaf |
2.90 % |
| Upper stem |
2.50 % |
| Lower stem |
1.40 % |
Both tea and coffee contain the methylated xanthines, caffeine,
theophylline and theobromine. Brewed coffee is said to have the
highest caffeine content among those dietary items containing
caffeine- approx. 100 mg per cup. A 300-ml bottle of cola has
30- 60-mg caffeine and approx. 37-mg caffeine is there in 56g
dark chocolate bar. There are a wide variety of drug products
that contain caffeine- typically 200 mg per tablet or capsule
(pharmacologically active dose of caffeine). A cup of tea has
approx. 28 –44 mg caffeine- (FDA 1980).
The quantity of caffeine in tea,
on dry solids basis, is more than the quantity of caffeine in
an equal weight of dried coffee beans. However, as a result of
getting more cups of tea from a unit quantity of black tea than
from an equal quantity of ground coffee beans, the quantity of
caffeine per cup of tea is less than the caffeine in an equal
cup of coffee.
Excessive caffeine is said
to have adverse effects on the human system and brewed tea has
only half the caffeine levels in brewed coffee. However, it is
important to note that research proves that the presence of caffeine
in tea does not produce unhealthy results due to its combination
with tea polyphenols.
How much caffeine is considered
safe?
The Food Guide to healthy eating
recommends caffeine consumption in moderation. According to the
current findings for most people an intake of caffeine up to 400-450
mg per day does not increase the risk of heart disease, hypertension
or have an adverse effect on pregnancy or the foetus. This level
of caffeine is equivalent to approximately 10 to 12 cups (170
ml) of tea per day.
As explained by Prof. T. W. Wickremanayake (Ph D Glasgow, Visiting
Research Fellow Glasgow, Wisconsin and California) the pharmacologically
active dose of caffeine is 200 mg and the acute fatal dose is
about 10,000 mg. Those who drink more than 5 cups of coffee or
9 cups of tea are regularly consuming 5% of the fatal dose. The
T 1/2 of caffeine is about 3 hr. It is excreted quickly in urine
as 1-methyl uric acid.
Prof. Wickramanayake also
states the following. “There is a positive association between
Myocardial infarction and heavy coffee consumption, whereas the
correlation between infarction and heavy tea drinking is negative.
In rats and rabbits maintained on atherogenic diets, caffeine
increases serum lipid concentrations and therefore the incidence
of atherosclerosis. Coffee has the same action but not decaffeinated
coffee. Tea has the opposite effect to caffeine alone or caffeine
in coffee. Similar results have been reported in a study of human
subjects with and without heart ailments. Russian scientists have
demonstrated that a course of tea consumption improved the condition
of atherosclerotic patients. The alleged adverse effects of caffeine
are apparently eliminated in tea either by a modification of its
activity by other constituents, or by the opposing action of some
anti-atherosclerotic constituent."
Does green
tea have the same Caffeine level
as black tea?
Green tea, as well as Oolong tea
& Black tea, are produced from the herb Camellia Sinensis.
They all contain the same amount of caffeine. Caffeine content
in a cup of tea is 2.5% to 4%, which is about a third of that
in coffee. It is claimed that 80% of the caffeine in tea remains
unabsorbed by the human body.
From the above you would realise
that Green tea, Oolong tea & Black tea may taste different
but the caffeine content is the same.
Why should one never reboil
water when brewing tea?
Taste, colour and mouth feel depend
on the interaction between the two main components of tea, polyphenols
and caffeine. Each component is astringent on its own, but as
a complex the astringent character is reduced.
Water is known to contain dissolved
gases absorbed from the air. Carbon dioxide (CO2) gas that is
present in water affects the acidity. Acidity of water plays a
critical roll in the ionization of tea polyphenols and it contributes
to the stability of the above complex.
CO2 in water is gradually released
during the boiling process. Re-boiling will in fact further reduce
CO2 levels, resulting in a decrease in the acidity. As mentioned
above this will affect the caffeine and polyphenol complexion,
and bring about changes in the colour as well as the character
of the brew.
Twice boiled water will therefore
affect the taste of a good tea and hence our request that only
freshly boiled water is used for brewing Dilmah tea.
Does drinking tea
during pregnancy affect the foetus?
Questions surrounding caffeine intake
and risk of miscarriage and health of the foetus continue to be
raised by pregnant women.
A study published in the journal
of American Medical Association found no evidence that moderate
caffeine use increases the risk of spontaneous abortions, growth
retention or account for other factors. Another seven-year epidemiological
study on 1,500 women examined the effect of caffeine, during pregnancy
as well as on subsequent child development.
Caffeine consumption equivalent
to approximately 3 ½ to 5 cups of tea per day had no effect
on birth weight, birth length and head circumference of the baby.
A follow-up examinations at age’s eight months, four and
seven years also revealed no effect of caffeine consumption on
the child’s motor development or intelligence.
A number of factors influence the
metabolism of caffeine and the individual’s response to
caffeine indigestion. These include pregnancy, age, sex, body
weight, diet, exercise, and stress smoking and alcohol consumption.
Pregnancy hampers caffeine
metabolism. For example, in non pregnant women the break-down
of half of the caffeine takes an average of 2.5 - 4.5 hours, 7
hours during mid-pregnancy and 10.5 during the last few weeks
of pregnancy. As caffeine retention is longer during pregnancy,
women sensitive to caffeine may be affected. As a result a moderate
consumption of approximately 3-4 cups a day, is recommended for
women during pregnancy.
What is decaffeinated
tea ?
For teas to be labelled decaffeinated,
the caffeine content should not exceed 0.4% by dry weight, which
is equivalent to approximately 4 mg of caffeine per 170 ml serving.
The process of decaffeination
extracts the caffeine in tea. The current commercially available
methods for decaffeinating black tea are solvent based extraction
using ethyl acetate or methylene chloride, and extraction using
supercritical (solid) carbon dioxide. All three methods extract
caffeine with minimum effect to the quality of tea.
Tannic acid –
what is it and is it present in tea?
Tannins or tannic acid are not present
in tea. Tea polyphenols were formerly referred to as tannins or
tannic acids due to the similarities in the chemical structure.
This has left many misguided notions about the effect of tea upon
the human digestive system. Chemists generally group compounds
into ‘families’ on account of common features in the
synthesis of the molecules. For example both strychnine and morphine
are alkaloids and have common structural features but the action
on the human body is different. Strychnine is a powerful stimulant
and morphine a powerful hypnotic.
Vegetable tannins are a large
chemical family and some of them are loosely called tannic acids.
These compounds possess the property of hardening animal tissues
and turning hide into leather. Tea polyphenols on the other hand
are called catechins, theaflavins and thearubigens, and are responsible
for many of the health benefits associated with tea. Such as anti-hypercholestemic
action, anti-hyperglycemic action, fat reduction action, anti-hypertensive
action, anti- cancer action and many other health promoting effects.
Current scientific literature points to the fact that tea polyphenols
are biochemically very different to tannins.
Nutrients in tea what
is in your cup of tea, and how it can affect your body
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EXPLANATION
OF TERMS |
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element
/ component |
description |
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Energy
(k cal) |
Calories (k cal) measure the energy content in foods.
Calorie content in tea (without sugar and milk) is negligible.
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Moisture |
Moisture refers to the water content in food. Processed tea
leaves contain moisture levels of 3 – 9 %. This can
vary since tea is hygroscopic and can absorb moisture after
processing, during storage. Fresh Tea deteriorates with the
absorption of moisture and Dilmah Online recommends that Dilmah
Tea is stored in an airtight container, in a refrigerator
to retain freshness, flavour and aroma.
Please note that Tin Caddies and tea caddies made from
materials that can corrode should not be used for refrigeration
due to the high moisture levels inside a fridge –
tea should be in an airtight, non corrosive container that
is free of odour. For example, a clean and odour free plastic,
re-sealable container.
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Protein
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Proteins are Nitrogen containing compounds which are found
in all animal and vegetable cells. An essential nutrient of
all living organisms. Protein intake from tea is negligible
as only less than 2% is extracted into hot water. However
if milk is added it contributes significant amount of the
protein requirement.
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Lipid |
Substances, which are insoluble in water and these include
the waxes, oils and fats. Fat gets readily deposited in
cell tissue. Tea contains a negligible amount of lipids
and the amount extracted to water is minimal, as it is insoluble
in water. As a result tea without milk and sugar is recommended
as part of a low calorie diet.
Inorganic constituents of plants and animals, e.g. Nitrogen,
Potassium, Phosphorous, Calcium, Copper, Magnesium, Manganese,
Molybdenum, Boron. They are essential for the healthy growth
of the plant.
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Carbohydrates
Sugars
Fibrous
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On average about three-quarters of the dry matter in plants
consists of carbohydrates. Carbohydrates are the main ingredient
for animals in maintaining their body temperature. Carbohydrates
consist of sugars and polysaccharides (fibrous matter). Main
sugars are glucose, fructose and sucrose.
Examples of polysaccharides are starch and cellulose.
Only 4-5% of the solids extracted by hot water are carbohydrate,
allowing tea to be used in low calorie diets.
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Calcium
Phosphorous
Ferrous
Sodium
Potassium
Magnesium
Copper
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Tea contains 4-9% of inorganic matter and the composition
of this fraction varies. Most of these substances are essential
to health and tea contributes to their dietary intake. Most
of the minerals found in tea are essential plant nutrients
and a healthy Tea bush would be expected to exhibit a range
of these components. Variations experienced are usually attributed
to differences in soil, age of the leaf at harvest and other
agronomic factors.
Scientists have indicated that tea may be effective in
treating anemia in due to its Copper and Ferrous components.
Sodium is an essential mineral for human nutrition however
its intake has to be regulated in hypertension patients. In
such cases the low proportion of sodium in tea is advantageous.
The tea bush tends to accumulate Magnesium, Aluminum and
Fluorine. Magnesium is an essential nutrient for man but
Aluminum is not known to be essential to human health. But
is always present in human tissue. Studies have shown that
the body may not absorb aluminum in tea.
Fluorine is beneficial for dental health.
Potassium is an essential element for the cell functions,
including cardiovascular muscle function and nerve function.
Compared to other elements the Potassium content of tea
is high. As a result tea provides part of the daily Potassium
requirement.
Calcium and Phosphorus are essential elements for the bone
development, strong bones and teeth and tea provides part
of the daily requirement of these elements.
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What are the nutritional
benefits of tea?
Tea composition varies with climate,
season, horticultural practices and variety. Polyphenols are the
most important component in tea, as they constitute approximately
36 percent of the dry weight of tea. Other components of fresh
green leaf include caffeine, protein and amino acids, carbohydrates,
lipids, vitamins and minerals.
Green and black tea have similar
chemical make-up. The primary difference between the two types
lies in the chemical changes that take place during their production.
In black tea the plant Polyphenols are oxidized and this is prevented
in the manufacture of green tea.
One of the most important groups
of Polyphenols in tea is the catechins in green tea, theaflavins
and thearubigens in black tea. A variety of physiological effects
have been attributed to tea catechins which are currently best
known for their antioxidant activities.
Black tea is all-natural (non flavoured)
and contains no additives. It is virtually calorie-free (1 calorie
per 100 ml) and sodium free and is therefore a suitable beverage
for individuals on calorie-reduced or low sodium diet. Tea includes
fluoride, traces of vitamins A, K, C, B carotene and B vitamins.
Average daily consumption
of tea in the United Kingdom, 3.43 cups (650 ml), provides very
few calories and only a small amount of fat, whilst contributing
valuable minerals and vitamins to the diet. It provides:
• Over half of the total intake of dietary flavonoids.
• Nearly 16% of the daily requirement of calcium
• Almost 10% of the daily requirement of zinc
• Over 10% of the folic acid need
• Around 9%, 25% and 6% of vitamins B1, B2 and B6 respectively.
Does tea affect the absorption
of Iron?
Although concerns have been expressed
about consumption of iron, existing research and dietary knowledge
indicate that tea is not likely to cause health risk, in individuals
consuming a typically Western diet.
Dietary iron exists in two forms,
heme iron (derived from animal) and non-heme iron (found in plants).
The body better absorbs heme iron than non-heme iron. Between
15-35 % of heme iron is absorbed, while 2-20% is absorbed of non-heme
iron. Non-heme iron is generally modified by other dietary components.
Certain components in grain, fruit
and vegetables as well as polyphenols in tea reduce the availability
of iron to the body. However, studies have shown that tea only
decreases iron absorption when it is consumed simultaneously with
food containing non-heme iron. Tea drinking between meals has
no effect on iron absorption.
Moreover the ability of tea
polyphenols to decrease iron absorption is reduced by the presence
of other dietary constituents particular ascorbic acid (known
to increase absorption of non-heme iron) and milk.
What are antioxidants?
Antioxidants are components which
help to protect cells from harmful “free radicals”,
known as oxidants. Free radicals occur naturally in the body as
a by-product of the respiration process and can bring about cell
damage. Antioxidants help to prevent this cell damage, which can
contribute to ageing and a number of chronic diseases, including
cancer and heart disease and strokes.
Are the antioxidants in green
and black
tea the same?
It was thought until comparatively
recently that green tea was the most effective antioxidant-containing
tea and that green-tea catechins (the unoxidized polyphenols present
in tea leaf) alone were the antioxidants giving tea its health-giving
attributes. It is now well known that the theaflavins and thearubugins
produced by the condensation of oxidized catechins, during the
fermentation stage of black tea manufacture, are equally effective
antioxidants (Leung et al 2001).
The catechins present in tea flush and as such in green tea are:
Expressed as a % of dry weight
Epicatechin 1 - 3%
Epicatechin gallate 3 - 6%
Epigallocatechin 3 - 6%
Epigallocatechin gallate 9 -13%
Catechin 1 - 2%
Gallocatechin 3 - 4%
During manufacture of Black Tea these catechins get oxidized &
polymerized (condensed), for example :
Epicatechin + Epigallocatechin gallate
+ Oxygen ---> Theaflavin
The paired catechins as they appear in Black Tea are now known
to be equally effective antioxidants. The body produces free radicals
(FRs) under certain conditions. Carcinogens and radiation from
the environment facilitates the formation of FRs. These FRs within
the body cause oxidative changes to DNA (the genetic material
present in all cells). Changes to DNA carry the risk of cancers.
The FRs are inhibited and destroyed by the antioxidants in tea,
both green and black tea.
Green and black tea comes
from Camellia Sinensis. Green tea is unfermented, steamed immediately
after plucking, and retains a lighter colour and flavour. Black
tea is allowed to ferment and is then dried, resulting in a darker
leaf colour and a more flavour and aroma.
Can the consumption of tea be good for
my memory as
I grow older?
Research conducted at the University
of Newcastle shows that drinking tea could help improve memory
and also slow the development of Alzheimer’s disease.
The functioning of the brain cholinergic
system, which is involved in attention and memory declines during
normal aging and is further affected in Alzheimer’s disease.
Current drugs for the symptomatic treatment of dementia are aimed
at enhancing the associated cholinergic deficit by inhibiting
acetylcholinesterase, an enzyme that cleaves the neurotransmitter
acetylcholine. Butyrylcholinesterase increases in the brains of
people with Alzheimer’s disease and may play a role in the
progression of the disease by its ability inter alia to hydrolyse
the neurotransmitter Acetylcholine. Inhibition of both these enzymes
is one of the objectives in treating cognitive dysfunction associated
with diseases such as Alzheimer’s disease.
During the study it was found both
green and black tea inhibited the activity of the enzyme acetylcholinesterase,
and also hinder the activity of the enzyme butyrylcholinesterase.
It was further observed that Green tea obstructed the activity
of beta-secretase, which plays a role in production of protein
deposits in the brain that are associated with Alzheimer’s
disease. So this study reports that tea infusions in vitro have
dual anti-cholinesterase and anti-ß-secretase activities
relevant to the treatment of dementia.
Previous studies have shown
that both green tea and black tea possess pharmacologically protective,
properties such as antioxidative, anticarcinogenic, neuroprotective
and hyppocholesterolaemic effects. This study indicates that Tea,
Camellia sinensis has the potential to enhance cholinergic function
and therefore may have a role in ameliorating and cholinergic
deficit in Alzheimer’s disease and other age related memory
impairments. The effects of tea infusions on the cerebral cholinergic
system and ß-secretase in vivo will depend on the levels
of the enzymes in the brain, the type and chemistry of the tea,
infusion concentration (strength), dose (number of cups per day)
and duration of consumption. It is also possible that regular
consumption of tea by patients with dementia prescribed cholinesterase
inhibitors may alter the effects of such drugs. Clinical and scientific
investigation of the chemistry and activities of cholinomimetic
and anti- ß-secretase compounds in C. sinensis, and cognitive
effects of tea consumption is warranted in order to establish
the relevance of these novel findings to the maintenance of cognitive
function in old age and in diseases such as Alzheimer’s
Disease.
Is regular tea consumption good for
my immune system?
A Harvard Medical School study discovered
that regular consumption of tea could boost the body's defenses
against infection. A component in tea was found in laboratory
experiments to prime the immune system to attack invading bacteria,
viruses and fungi, according to a study in the Proceedings of
the National Academy of Sciences.
A second experiment, using human
volunteers, showed that immune system blood cells from tea drinkers
responded five times faster to germs than did the blood cells
of coffee drinkers. Researchers claim that the results give clear
proof that five cups of tea a day sharpen the body's disease defenses.
In the study a substance called
L-theanine was isolated from ordinary black tea. L-theanine is
broken down in the liver to ethylamine, a molecule that primes
the response of an immune system element called the gamma-delta
T cell, considered the first line of defence against bacteria,
viral, fungal and parasitic infections.
The T cells prompt the secretion
of interferon, a key part of the body's chemical defense against
infection. To further test the finding, the researchers had 11
volunteers drink five cups a day of tea, and 10 others drink coffee.
Before the test began, they drew blood samples from all 21 test
subjects.
After four weeks, they took
more blood from the tea drinkers and then exposed that blood to
the bacteria called E-coli. The immune cells in the specimens
secreted five times more interferon than did blood cells from
the same subjects before the weeks of tea drinking researchers
claimed. Blood tests and bacteria challenges showed there was
no change in the interferon levels of the coffee drinkers.
Can tea be part of a healthy
adult’s daily fluid intake?
As brewed tea contains almost 98%
water it makes a healthy contribution to the delay fluid balance.
Tea contains no additives or artificial colours. Research indicates
possible antioxidant benefits so drinking tea can be a calorie-free
way to increase intake dietary antioxidants.
Does tea
reduces the diuretic effect
in comparison to coffee?
The diuretic can be attributed to
the caffeine present in tea and coffee. Caffeine increases diuretic
action on the kidneys, increasing urinary volume and sodium extraction
as a result of a decrease in the tubular re-absorption of sodium
and water. Coffee contains a higher content of caffeine compared
to tea. Research has shown that a 170ml (6-oz) serving of tea
contains, on average 34mg of caffeine in comparison to 99 mg of
caffeine in 170 ml serving of brewed coffee.
As a result the diuretic effect of coffee is greater compared
to tea.
Why does
tea cloud when
it is cooled?
Clouding in tea is a result of the
colloidal precipitate that is formed. This is called ‘tea
cream’. Tea creaming takes place when black tea is cooled
below 400 C. A weak complexion is formed between caffeine and
polyphenols (theaflavins and thearubigins). The tendency to cream
down varies from tea to tea. In black tea without milk complexation
and subsequent precipitation that occurs is negligible due to
just 4% of caffeine.
In tea with milk a similar association
takes place between the milk protein casein and various polyphenols.
Due to the availability of casein in milk tea the complexion is
greater resulting in larger precipitation.
Does the
water affect
the tea brew?
The water used to brew the tea significantly
affects the colour and the taste of a cup of tea. Tea brewed in
soft water or permanently hard water (which contains CaSO4) appears
brighter than if it is brewed in temporary hard water (that contains
Calcium bicarbonate CaCO3).
High pH water that contains
bicarbonate makes the infusion look darker brown due to the greater
ionisation of the tea polyphenols. While lower pH as in lemon
tea the infusion turns yellow. As for taste some teas are more
suited to softer water such as the orthodox manufactured Assam
leaf, while high grown Ceylon and CTC manufactured teas are better
with temporary hard water.
What is tea
scum or the dark skin on top of
the brewed tea?
It is the result of the high molecular
weight components which are formed due to the influence of calcium
and bicarbonate ions at the liquid water interface. The scum can
be removed in two ways
1) by filtering the calcium ions,
2) by adding acids to covert bicarbonate ions to CO2.
Very little scum is formed
on a cup of very strong tea. As the acidic tea polyphenols themselves
partly neutralise the bicarbonate ions. It also should be noted
that less than one mg of scum is formed in a cup of tea and it
is not known to be harmful to human health.
Can overcooked
water affect the quality of tea?
Boiling water for too long does
dramatically affect the quality of tea. The desirable brisk taste
of tea is created by the interaction of two of its main components,
caffeine and polyphenols. Each component is harsh on its own but
as a complex the compounds moderate each other. Acid levels of
water affect the behaviour of these components.
Water contains minerals and gases
absorbed from the earth bed and air. Carbon dioxide absorbed by
air makes the water slightly acidic that influence the colour
and taste. High temperature changes the acidity of water and the
acidity is reduced by gradually driving out carbon-dioxide. Therefore
re-boiled water might well brew tea of a different colour and
strength and is unsuitable to brew a good cup of tea.
What is
Real Tea?
Tea in its true sense is defined
by the International Standards Organisation (ISO) as, ‘tea
derived solely and exclusively, and produced by acceptable processes,
notably withering, leaf maceration, aeration and drying, from
the tender shoots of varieties of the species Camellia Sinensis,
known to be suitable for making tea for consumption as a beverage.
Real Tea is tea produced in the
traditional, orthodox manner from the tender shoots of Camellia
Sinensis. The process of manufacture, perfected over centuries
is the most widespread in Sri Lanka with its drying, rolling,
fermentation and baking into the form most people are familiar
with – black tea, green tea, white tea. Orthodox Tea is
distinct from the more recent process – CTC (or Cut, Twist
and Curl) which was developed by companies seeking to offer quick
colour in a teabag. CTC teas rob tea of its soul, losing the subtlety
of flavour, aroma, variety and character that Orthodox Teas are
prized for. CTC consists of just 3 grades or forms, whilst Orthodox
Tea produces almost infinite variety of leaf size, colour, subtlety
of character and body.
Dilmah offers Real Tea from
a Single Origin in its teabags and leaf tea, offering quality,
flavour and richness of taste in both teabags and leaf tea.
What are Herbal
Infusions?
Herbal Infusions, fruit based tisanes
and floral infusions are not tea. There are only three types of
tea, black tea, green tea and Oolong tea. In many countries, notably
the USA, these infusions are usurping the health and other benefits
of tea falsely. We give below a brief introduction to the most
popular herbal infusions. Dilmah offers a selection of three herbal
infusions, clearly differentiated from Dilmah black and green
teas.
CHAMOMILE
(Chamomillae romanae)
Chamomile herbal infusions are derived
from the plant Chamomillae romanae. It is a one-year plant, which
reaches a height of approx. 55.cm. Chamomile contains 0.6% - 2.4%
essential oils such as angeloyl, methacryl and flavenoids as the
main constituents. The white flower heads are mechanically harvested
and dried in chambers to manufacture the commercial product.
Chamomile was known for its health
benefits for centuries and the ancient Egyptians dedicated it
to their sun god, and used Chamomile in their aromatherapy. This
legacy of Chamomile lives on. Studies have that it is beneficial
for complaints such as indigestion, nervousness, depression and
headaches.
In testing its Chamomile based product
Kamillosan, the Chemiewerke Hamburg Pharmacy of West Germany found
that it reduces gastric acid and helps prevent ulcers. It also
promoted tissue regeneration after patients had operations on
their intestinal tract and urinary system. Chamomile decreases
histamine, implicated in ulcers and the skin swelling, puffy eyes
and headaches brought about on by allergies. It is given to children
for digestive and hyperactive problems.
The Greeks named Chamomiles “kamai melon” (ground
apple) inspired by its distinct apple like fragrance and the Spanish
called it Manzanilla or “little apple”.
PEPPERMINT (Mentha
piperita L.)
Peppermint originated from the Mediterranean
but is now cultivated globally in the Balkans, Northern Europe
and the USA. It is characterized by its strong aroma. It is a
perennial herb with a flat root system. It reaches normally a
height of approx. 2-ft and is harvested shortly before blooming.
Peppermint contains 0.5 – 4 % essential oil that includes
Menthol and menthol esters.
Written evidence of old Egypt indicates
that Mentha plants were cultivated and exploited for medical use
1,000 years before Christian era. It also shows that Mint plants
have represented a valuable object of trade, and was even accepted
as tithes to pay taxes due.
Studies have shown that peppermint
tea brings about considerable increase in the production of bile
due to the presence of flavonoids. Peppermint leaf or extracts
prepared from it are included in many (ca. 50) prepared cholagogues
and bile-duct remedies, e.g. Cholagogum Nattermann (capsules,
drops), etc. gastrointestinal Remedies (ca 50), e.g. Gastricholan
Iberogast Ventrodigest, etc.), liver remedies (more than 10),
hypnotics/sedatives (more than 10), e.g. Nerventee Stada, Esberi-Nervin
drops, etc., and laxatives.
ROSEHIP &
HIBISICUS
Usually consists of 70% Hibiscus
and 30 % Rosehip. Hibiscus (Hibisci flos) originated in Angola
but is now cultivated throughout the tropics. It is an annual
herbaceous plant with lobed leaves that grows to a height of 5
m. Flowers with a 5-lobed calyx and divided epicalyx. Hibiscus
for infusions is manufactured form the dried calyxes harvested
from the fruit of the species.
It is principally taken as a caffeine-free
refreshing drink taken in large amounts because of the plant acids.
The plant acids which are difficult to absorb act as a mild laxative.
Hibiscus has been extensively used in the African Folk medicine.
The drug is ascribed, among other things, spasmolytic, antibacterial,
cholagogic, diuretic and anthelmintic properties. Studies have
shown aqueous extracts of hibiscus flowers relaxes the muscles
of the uterus and to lower the blood pressure.
Rosehip is derived from the
plant Rosae pseudofructus. It is a shrub that grows up to a height
of 5 m with thorn branches with flowers close to 5 cm in diameter
with five petals. The drug consists of the dried hypanthia from
various species of the genus Rosa with the fruit enclosed in them.
Rosehip is native to Europe, Western and Central Asia, and North
Africa but now it is cultivated in Chile, Bulgaria, Romania, China
and Hungary. It was used in folk medicine as a result of its diuretic
and laxative action due to the pectin and the plant acid content.
Due to its high content of vitamin C Rosehip are used as breakfast
teas.
When Tea is not TEA
Green Tea, Oolong tea, Black tea,
Decaffeinated Black & Green Tea, the Green tea component in
Jasmine Green tea, and Organic tea are derived from the tea plant,
Camellia Sinensis. Many brands use the word ‘tea’
loosely since ‘tea’ refers only to the dried leaves
of the plant Camellia Sinensis, and does not include infusions
like Rooibos, Mate, Fruit and other herbal infusions. The term
Red Tea, recently associated with Rooibos, for example refers
to the herb from the South Africa shrub Rooibos (meaning Red Bush).
The traditional forms of tea are
White Tea (see below for details), Green Tea (unfermented), Oolong
Tea (partially fermented) and Black Tea (fully fermented). These
offers the health benefits associated with tea whilst others such
as Rooibos, Mate, fruit and other infusions usually do not, although
they may have their own specific benefits.
Dilmah Jasmine Tea (Jasminum officinale)
Composition includes 98% Green tea
(Camellia Sinensis) and 2% Jasmine flowers.
Organic tea
The manufacture of organic
tea is carried-out without the addition of Chemical fertiliser,
Pesticides and Insecticides as a result the product doesn’t
contain chemical residues which can bring about health effects.
What is White
Tea ?
Sri Lanka traditionally produces one of the world’s finest
white teas in the form of Silver Tips and Golden Tips, entirely
handmade from a special variant of the Camellia Sinensis plant,
untouched by machines and prized for their rarity and subtle character.
The Chinese also have a tradition of producing fine White Teas.
In the production of white tea the
'bud' is selectively plucked and sun dried. Since the Bud remains
undamaged the Catechins or the un-oxidised Polyphenols present
remain intact. What we refer to as Flavonoids in tea, or the antioxidants
in tea, include the un-oxidised Polyphenols or Catechins as in
Green Tea and White Tea, as well as the Theaflavins and low molecular
Thearubigins in conventional Black Tea. The Catechins (Flavonoids)
content in the tea becomes progressively less as we go down from
the Bud to the mature leaves in a tea shoot. The bud has the highest
catechin content, next the first leaf, followed by the second
leaf and so on.
Hence the sun dried buds or White Tea will have a higher Flavonoid
or Antioxidant property.
Further, since the bud is
sun dried (not subjected to high temperature in a
drier) even the vitamin content in the White Tea will remain high
and potent. So will be the Caffeine content. It has been already
shown that the bad effects of caffeine is nullified in Tea by
the presence of the Polyphenols in the tea (unlike in coffee and
the colas). Hence the White Tea will have greater nutritive and
therapeutic value than the conventional black tea.
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