Lab Synthesis
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Grape Seed Extract Resveratrol
You have seen people talking and promoting resveratrol vitamins on Oprah, FOX News, WebMD, and 60 Minutes. You have heard about resveratrol in wed wine, and that it has been dubbed the Fountain of Youth. So why all the hype?
Free radicals are produced by the body during metabolism and when the immune system is fighting an illness or infection. The human body can normally handle these self produced free radicals; those produced by outside influences such as overexposure to the sun, cigarette smoke and pollution may create an over abundance of free radicals the body cannot eliminate on its own.
-Brain Function: Recent studies seem to indicate that Resveratrol has a positive impact on your brain function. This includes helping to give you an improved memory, and better ability to learn more quickly. It is even possible that Resveratrol may help slow the progression of crippling diseases such as Alzheimer's.
Resveratrol extract is available in two forms; trans resveratrol is a natural occurring compound found in the skins of grapes, blueberries and peanuts, whereas cis resveratrol is a synthetic compound. Not surprisingly, trans resveratrol extract is far more powerful than the man made version.
Resveratrol as well as other polyphenols and bioflavonoids are present in large quantities in the bark, leaves, and twigs of grape vines. Unlike white wine, which is fermented only from the pressed juice of the grape, red wine contains a much larger amount of these substances since it is fermented using the bark and leaves and other parts of the vine.
In the resveratrol 60 Minutes episode, a doctor by the name of Christopher Westphal claimed that he believes the information provided by the French and American scientific studies of resveratrol will eventually"maybe even in the near future"be put to use in order to formulate a pill or drug, which will be available to the public to help aide in the prevention of aging and significantly increase a person's longevity. Dr. Westphal also states on that resveratrol 60 Minutes episode, that with these resveratrol pills, it may be possible to slow down the genes responsible for the aging process"putting death off for several years. Additionally, on the episode of resveratrol 60 Minutes, it came to light that Dr. Westphal's journey to find the 'fountain of youth' was soon joined by a biochemist from Harvard by the name of Dr. David Sinclair. The two doctors quickly began focusing on the genes that are commonly found in most life forms: the sirtuin gene. This particular gene is said to normally be inactive, however, triggers a survival mechanism that is said to prolong life once activated. In the meantime, a product called Wine-Rx has been widely used to aide in the longevity process. Visit http://winerx.org/ for more information on how to slow the aging process!
Want to find out more about grape seed extract resveratrol, then visit our site and learn more about Health Benefits Of Resveratrol Wines.
How to work out this balanced Chemistry Equation?
In the lab synthesis of aspirin, acetic anhydride (25ml) and 2 - hydroxybenzoic acid (25g) were reacted. what is the balanced chemical equation for this reaction? (state symbols) also, determine the % yeild of the experiment if 23g of aspirin was synthesised?
C7H6O3 + C4H6O3 ---> C9H8O4 + CH3COOH
2 - hydroxybenzoic acid (Salicylic acid)+ acetic anhydride ---> aspirin + acetic acid
1 mole Salicylic acid produces 1 mole of aspirin
138.12 g Salicylic acid produces 180.157 g of aspirin
25g Salicylic acid produces 180.157/138.12 x 25 g of aspirin
25g Salicylic acid produces 32.608 g of aspirin
so the theoretical yield of aspirin is 32.608 g
% yield of aspirin = practical yield / theoretical yield x 100
% yield of aspirin = 23 / 32.608 x 100
% yield of aspirin = 70.53 %
Gobind Khorana, MIT professor emeritus, dies at 89 (MIT)
H. Gobind Khorana, MIT’s Alfred P. Sloan Professor of Biology and Chemistry
emeritus, died of natural causes in Concord, Mass., Wednesday morning. He was
89.
A winner of the 1968 Nobel Prize in physiology or medicine, Khorana devoted
much of his scientific career to unraveling the genetic code and the
mechanisms by which nucleic acids give rise to proteins. “Gobind was a
brilliant, path-breaking scientist, a wise and considerate colleague, and a
dear friend to many of us at MIT,” said Chris Kaiser, MacVicar Professor of
Biology and head of the Department of Biology, in an email announcing the news
to the department’s faculty.
Khorana was born in India in 1922, in a small village called Raipur, in the
region of Punjab that is now part of Pakistan. He was the youngest in a Hindu
family of one daughter and four sons; his father was a _patwari_, an
agricultural taxation clerk in the British Indian system of government. In an
autobiographical note written upon winning the Nobel Prize, Khorana wrote:
“Although poor, my father was dedicated to educating his children and we were
practically the only literate family in the village inhabited by about 100
people.”
Khorana attended ...
Pendulum Lab - Synthesis
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