Sunday, May 6, 2012
Healthy Foods
We all
know that health is wealth. Everything will be okay if we can maintain good
health. A sound health is necessary for sound mind. So we have to take healthy
foods in order to maintain sound mind too. There is a misconception that
healthy foods mean rich foods. It is not correct actually. There are available
cheap foods that are beneficial to our health. Healthy foods exist in our
surroundings.
Healthy
foods are those food items that provide good amount of carbohydrate, protein,
fat, vitamin, minerals and other nutritional components. For breakfast we may
take bread, egg, jelly, milk or tea. During lunch rice is preferable to the
Asians. Rice with vegetable curry, small fish and dal (pulse) is suitable.
Sometimes meat and egg will make your meal palatable. You can take biscuits
along with tea in the afternoon. Try to avoid heavy foods during this time.
When you are going to have your dinner, try to eat bread instead of rice
because it can make you fatty. Bread with vegetable curry is perfect. Try to
have a glass of milk every day before you are going to sleep. You need to avoid
taking too much chocolate, caffeine or alcohol. If you are already addicted to
smoking, you must give up this type of bad habit. Smoking is injurious to
health.
Fruits
and vegetables constitute healthy foods. So try to eat any kind of fruit daily.
Monday, April 23, 2012
Introduction to Caffeine
Today I am going to share an important topic. It is about caffeine.
Caffeine is a very common substance and is found in
coffee, tea, soft drinks, chocolate, and "stay-awake" pills such as
Vivarin. It can be synthesized or isolated from natural sources.
Caffeine constitutes approximately 4% of tea and coffee leaves, and is
also found in cola nuts and cacao beans.
In Humans, Caffeine acts to stimulate the heart,
central nervous system, and the respiratory system. Blood pressure is
increased by its use, since heart rate is increased, as is contraction
force and volume output. It is a diuretic and has the effect of delaying
fatigue. Caffeine has a bitter taste but no smell. There is research
linking high Caffeine consumption in pregnant women to the malformation
of their children.
Caffeine is addictive to Humans. Regular
consumption of drinks and food containing the drug reduce sensitivity to
its effects, causing the body to become over-sensitive to adenosine.
This causes a decrease in blood pressure, severe headaches, dizziness
and tiredness. People have been known to die after ingesting large
quantities of Caffeine, but it would take approximately 100 cups of
coffee to reach these levels.
Caffeine is an alkaloid, and, more specifically,
a member of the methylxanthines. Thus, Caffeine is closely related to
theophylline and theobromine. Pure Caffeine takes the form of white,
hexagonal crystals, which can be broken into a soft powder. It has a
melting point of 235 oC - 238 oC, and a molecular weight of 194.19 g/mol. It is easily soluble in Chloroform and partially soluble in water.
If you want to know further please let me know. I will try my best to let you know the update. Thanks.
Sunday, April 22, 2012
Thesis on "Pruning and Pesticide Condition in the Tea Estates of Bangladesh"
My thesis program is going to be started very soon. I am a student of "Food Engineering and Tea Technology" in Shahjalal University of Science and Technology. Lecturer Mahfuz Rahman is my supervisor. He is very expert in this sector. I am trying to start my thesis in the Malnicherra tea garden and my subject is however, tea related. I am very much interested in this subject. I will try my best to sort out the problems regarding plucking and pesticide condition. I will visit the gardens and talk to the workers, after that I will post them in my blog. I will also upload the pictures and video also. Thanks. Let me know further if you have any opinion. Don't hesitate to share.
Sunday, January 22, 2012
Health Benefits of Tea Drinking
There are so many health benefits of drinking tea. I
enlisted some points while working on this issue. The points are given below.
- If we drink tea regularly for years our bones will be stronger and it is proven.
- Research suggests that older women who are tea drinkers are 60 percent less likely to develop rheumatoid arthritis than those who do not drink tea.
- Both green and black teas have been credited with cancer-inhibiting powers.
- In a recent study it is found that, people who gargled with a black tea extract solution twice per day showed a higher immunity to flu virus compared to the people who did not gargle with black tea.
- In a study it is found that, people who drink about a cup and a half of tea per day are almost 40% less likely to suffer a heart attack compared to tea abstainers.
- Recent research suggests drinking tea may help prevent everything from cavities to Parkinson's disease.
- Rinsing with tea may prevent dental cavities and gum disease.
- Drinking a half-cup of green or oolong tea per day reduces a person's risk of high blood pressure by almost 50%.
- It reduces extraweight of our body.
- Consumption of tea reduces the risk of various skin problems.
Water Used for Tea Manufacturing and Tea Brewing
While manufacturing tea in
the tea processing industry and brewing tea in our kitchen, it is mandatory to
ensure safe and germ free water in every stage because water has an effect on
the quality of tea. But it is usually found that we are not so serious on this
particular issue. Impure water reduces the quality and hence the value of teas.
Desirable Characteristics of Water:
- Water having a pH value of 6.7 to 7.2 is recommended for washing machineries, fermenting floor etc. in the manufacturing industry. Slightly acidic water (pH 6.7) is better than slightly alkaline water (pH 7.2). Such slightly acidic water will make the tea infusion brighter. Continuous use of even slightly alkaline water will make the tea infusion 'dull'. Therefore, alkaline water should never be used for washing fermenting floor etc.
- Iron content of more than 2 ppm (parts per million) is detrimental to tea quality.
- The total content of chemicals causing temporary and permanent hardness should not exceed 10 ppm.
The
following analyses for water are necessary:
1. Total solids
2. Total hardness temporary
and permanent
3. Acidity or alkalinity
4. Quantitative analyses of
magnesium, calcium, sulphate, chloride and carbonate
5. Bacteria per cubic
centimeter
Effect of Water Quality on Tea Brew:
The water used to brew tea
significantly affects the color and the taste of a cup of tea. Tea brewed in
permanently hard water (which contains calcium sulphate) appears brighter than
if it is brewed in temporary hard water (that contains calcium bicarbonate,
calcium carbonate). The desirable brisk taste of tea is created by the
interaction of two of its main components caffeine and polyphenols. Each
component is harsh individually but as a complex the compounds moderate each
other.
High pH water that contains bicarbonates makes the
infusion look darker brown due to the greater ionization of the polyphenols, while
lower pH of the infusion turns yellow. As for taste some teas are more suited
to soft water such as orthodox manufactured Assam leaf, while CTC manufactured
teas are better with temporary hard water
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