Amygdalin, C20H27NO11, is a glycoside initially isolated from the seeds of the tree Prunus dulcis, also known as bitter almonds, by Pierre-Jean Robiquet and A. F. Boutron-Charlard in 1830, and subsequently investigated by Liebig and Whler in 1830. Several other related species in the genus of Prunus, including apricot (Prunus armeniaca) and black cherry (Prunus serotina), also contain amygdalin.
Amygdalin /Vitamin B17
Bitter almond seed
Since the early 1950s, a modified form of amygdalin has been promoted under the names laetrile and "Vitamin B17" as a cancer cure. In reality, neither amygdalin nor any derivative such as laetrile is in any sense a vitamin. Studies have found such compounds to be dangerously toxic as well as being clinically ineffective in the treatment of cancer. Taken by mouth they are potentially lethal because certain enzymes (in particular, glucosidases that occur in the gut and in various kinds of seeds, edible or inedible) act on them to produce cyanide. The promotion of laetrile to treat cancer has been described in the medical literature as a canonical example of quackery, and as "the slickest, most sophisticated, and certainly the most remunerative cancer quack promotion in medical history."
Amygdalin was first isolated in 1830. In 1845 it was used as a cancer treatment in Russia, and in the 1920s in the United States, but it was considered too poisonous.
In the 1950s, a purportedly non-toxic, synthetic form was patented for use as a meat preservative, and later marketed as laetrile for cancer treatment.The U.S. Food and Drug Administration prohibited the interstate shipment of amygdalin and laetrile in 1977. Thereafter,27 U.S.states legalized the use of amygdalin within those states.
It started back in 1845 for the treatment of cancer, new home and abroad are nonvolatile memories. The mechanism different opinions, some people think that its anti-cancer effect is due to carcinoma of acid -glucosidase enzyme in 1 - mandelic nitrile- -glucuronidase HCN generated due to death, also reported that the anti-cancer effect was mainly due to nitrile instead of almond caused by cyanide. Japan and the U. S. Reported a significant clinical effect of the treatment of cancer, but also reports and the results are also inconsistent, or opposite, and a post-service deaths. Therefore, the value of their cancer is still controversial.
The almond is a species of tree native to the Middle East and South Asia. "Almond" is also the name of the edible and widely cultivated seed of this tree. Within the genus Prunus, it is classified with the peach in the subgenus Amygdalus, distinguished from the other subgenera by the corrugated shell (endocarp) surrounding the seed.
The fruit of the almond is a drupe, consisting of an outer hull and a hard shell with the seed (which is not a true nut) inside. Shelling almonds refers to removing the shell to reveal the seed. Almonds are sold shelled , or unshelled (i.e., with the shells still attached). Blanched almonds are shelled almonds that have been treated with hot water to soften the seedcoat, which is then removed to reveal the white embryo.
1) Bitter almond contains amygdalin, amygdalin intestinal microbial enzymes in the body, or can be itself contained in the bitter almond bitter almond bitter almond hydrolysis to produce small amounts of hydrocyanic acid and benzaldehyde, inhibit the respiratory center, to cough, asthma.
2) Anti-inflammatory and analgesic effects.
3) Anti-tumor effect.
4) Lowering blood sugar,Hypolipidemic.
5) Elimination of pigmentation, freckles, dark spots, so as to achieve the effect of beauty.
6) Attending functions lower gas cough and asthma, laxative. For cough, asthma, chest full of phlegm, blood-chun, dry, dry bowel constipation.
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