Japanese knotweed extract (Polygonum cuspidatum) Resveratrol 98%
Sales Manager at Shanghai Natural Bio-engineering Co., Ltd
|synonyms||Japanese knotweed extract, Polygonum cuspidatum, red wine extract, trans-3,5,4′-trihydroxystilbene, trans-Resveratrol, cis-resveratrol|
|Latin Name||Polygonum cuspidatum|
|Botanical source||1.Japanese knotweed plant Polygonum cuspidatum
2. red wine
3. red grape extracts
|Appearance||white powder with slight yellow|
|Solubility in water||0.03 g/L|
|Key benefits||Anti-aging, Anti-Cancer, cardiovascular support, regulate estrogen level, weight loss|
|Applied industry||Sports nutrition, nutraceuticals, cosmetics|
What is resveratrol?
When talk about resveratrol, we have to mention red wine since resveratrol is first popularly known in red wine. In fact, resveratrol was actually first isolated in 1940 from white hellebore roots by the Japanese scientist Michio Takaoka. Red wine, in moderation, has long been thought of as heart healthy. However, the most popular source of resveratrol is from Japanese knotweed extract (Latin name:Polygonum cuspidatum)
Resveratrol (3,5,4′-trihydroxystilbene) is a polyphenolic phytoalexin. It is a stilbenoid, a derivate of stilbene, and is produced in plants with the help of the enzyme stilbene synthase.
Resveratrol exists as two geometric isomers: “cis-” (“Z”) and “trans-” (“E”). The ”trans-” form can undergo isomerisation to the “cis-” form when exposed to ultraviolet irradiation. Trans-resveratrol in the powder form was found to be stable under “accelerated stability” conditions of 75% humidity and 40 degrees C in the presence of air. Resveratrol content also stayed stable in the skins of grapes and pomace taken after fermentation and stored for a long period.
Sources of resveratrol
The resveratrol in red wine comes from the skin of grapes used to make wine. Because red wine is fermented with grape skins longer than is white wine, red wine contains more resveratrol. Simply eating grapes, or drinking grape juice, has been suggested as one way to get resveratrol without drinking alcohol. Red and purple grape juices may have some of the same heart-healthy benefits of red wine.
Other foods that contain some resveratrol include peanuts, blueberries and cranberries. It’s not yet known how beneficial eating grapes or other foods might be compared with drinking red wine when it comes to promoting heart health. The amount of resveratrol in food and red wine can vary widely.
Benefits of taking reveratrol supplements
Numerous studies have been conducted regarding various purported resveratrol benefits. Studies have primarily been conducted on laboratory animals, and while human search is very promising, is still in its earliest stages. Current research into resveratrol benefits points to resveratrol having amazing anti-aging properties, hence dubbed “The Fountain of Youth.” Many other key benefits such as cardiovascular effects, anti-cancer, estrogen regulating effects are mentioned here.
1.Resveratrol and its anti-aging benefits
The study by Harvard Medical School researchers shows that resveratrol stimulates production of SIRT1, a serum that blocks diseases by speeding up the cell’s energy production centers known as mitochondria.
Resveratrol affects the activity of enzymes called sirtuins. Sirtuins control several biological pathways and are known to be involved in the aging process. Resveratrol is only one of many natural and synthetic sirtuin-activating compounds (STACs) now known. Certain metabolic diseases, including type 2 diabetes and heart disease, tend to strike as we age. In animal studies, severely restricting calories can help prevent some of these diseases. Over a decade ago, researchers found that resveratrol can mimic calorie restriction in some ways and extend the lifespans of yeast, worms, flies and fish.
2.Resveratrol and cardiovascular benefits
Resveratrol is famous for its Cardioprotective effects.According to Wikipedia, moderate drinking of red wine has long been known to reduce the risk of heart disease. This is best known as “the French paradox”.
Studies suggest resveratrol in red wine may play an important role in this phenomenon. It achieves the effects by the following functions: (1) inhibition of vascular cell adhesion molecule expression;(2) inhibition of vascular smooth muscle cell proliferation;(3) stimulation of endolethelial nitric oxide synthase (eNOS) activity;(4) inhibition of platelet aggregation;and (5) inhibition of LDL peroxidation.
The cardioprotective effects of resveratrol also are theorized to be a form of preconditioning—the best method of cardioprotection, rather than direct therapy.Study into the cardioprotective effects of resveratrol is based on the research of Dipak K. Das, however, who has been found guilty of scientific fraud and many of his publications related to resveratrol have been retracted. A 2011 study concludes, “Our data demonstrate that both melatonin and resveratrol, as found in red wine, protect the heart in an experimental model of myocardial infarction via theSAFE pathway.”
Resveratrol, a polyphenol in red wine, induces nitric oxide (NO) synthase, the enzyme responsible for the biosynthesis of NO, in cultured pulmonary artery endothelial cells, suggesting that Resveratrol could afford cardioprotection by affecting the expression of nitric oxide synthase.
3.Reveratrol and anti-cancer benefits
Experts already claim it can help you beat cancer – from brain tumours to breast, colon, prostate cancers and many more. Resveratrol is being studied to see how it affects the initiation, promotion, and progression of cancer. With regard to tumor initiation, it has been shown to act as an antioxidant by inhibiting free radical formation and as an anti-mutagen in rat models. Studies related to progression have found that resveratrol induced human promyelocytic leukemia cell differentiation, inhibited enzymes that promote tumor growth, and exerted antitumor effects in neuroblastomas. Noting that in animal studies, resveratrol was effective against tumors of the skin, breast, gastrointestinal tract, lung, and prostate gland. Memorial Sloan-Kettering, the American pillar of cancer treatment, conducted research on theinflammatory effects on cells leading to cancer. It is widely known that an enzyme, COX-2, lies behind the stimulation of localised hormones (eicosanoids) causing inflammation, the precursor to cancer. In the research Resveratrol completely turned off the COX-2 driver. MD Anderson´s studies have shown this same anti-inflammatory benefit too. Plus, after conversion in the liver to a sulphated form the compound can attack several of the steps in the cancer process even killing cancer cells.
4. The Benefits of Resveratrol Weight Loss
Resveratrol is actually a very popular nutrient that has been shown on Dr. Oz, Oprah, Barbara Walters, and a number of other national television shows. It is quickly becoming one of the country’s best natural supplements.
How does Resveratrol help you lose weight? Resveratrol on its own will not be effective at helping you to lose weight, but you have to use it in conjunction with exercise and a proper diet if you really want to obtain the maximum benefits from the supplement.
However, the vitamin, when in concentrated form, has been proven to help speed up the metabolism. This speeding up of the metabolism causes the body to metabolize and process to food consumed faster, which causes the calories in the food to be used more effectively. When the body metabolizes food faster, there is less risk of excess calories being stored in the body in the form of fat.
However, in order to ensure that Resveratrol actually works, you need to take sufficient amounts of the vitamin. The supplement is effective because it is a concentrated form of the helpful vitamin, and taking the supplement is the best way to ensure that Resveratrol works effectively in helping you shed those excess pounds.
Another way Resveratrol helps you to lose weight is through reducing the amounts of estrogen that your body produces. Estrogen increases body fat and decreases muscle mass, so reducing the amounts of estrogen produced by your body will help you lose weight and build muscle. Taking Resveratrol can be a good way to ensure that your body doesn’t produce the amounts of estrogen that will keep it from building muscle.
Side Effects of taking resveratrol supplements
Because there have been very few studies conducted on resveratrol in humans, doctors still can’t confirm what adverse effects these supplements might have on people over the long term. So far, studies have not discovered any severe side effects, even when resveratrol is taken in large doses. However, resveratrol supplements might interact with blood thinners such as warfarin (Coumadin), and nonsteroidal anti-inflammatory medications such as aspirin and ibuprofen, increasing the risk for bleeding.
Like other supplements, resveratrol isn’t regulated by the FDA, so it’s difficult for consumers to know exactly what they’re getting when they buy a bottle, or whether the product is actually effective.
Dosage of resveratrol supplements
There also isn’t any specific dosage recommendation, and dosages can vary from supplement to supplement. The dosages in most resveratrol supplements are typically far lower than the amounts that have been shown beneficial in research studies. Most supplements contain 250 to 500 milligrams of resveratrol. To get the equivalent dose used in some animal studies, people would have to consume 2 grams of resveratrol (2,000 milligrams) or more a day.