[Latin Name] Vitis vinifera L.

[Plant Source]from China

[Specifications]Proanthocyanidins polyphenol

[Appearance]Purple red fine powder

Plant Part Used:Skin

[Particle size] 80 Mesh

[Loss on drying] ≤5.0%

[Heavy Metal] ≤10PPM

[Pesticide residue] EC396-2005, USP 34, EP 8.0, FDA

[Shelf life] 24 Months

[Package] Packed in paper-drums and two plastic-bags inside.

[Net weight] 25kgs/drum

Function

1.Grape skin extract used to reduce cancer risk;

2.Grape skin extract has the useage of antioxidant activity;

3.Grape skin extract has anti-inflammatory, removal of swollen;

4.Grape skin extract can reduce the incidence of spots and cataracts;

5.Grape skin extract will reduced exercise-induced vascular sclerosis porridge;

6.Grape skin extract will strengthen the blood vessels the flexibility of the wall.

Application

1.Grape skin extract can be made into capsules, troche and granule as healthy food;

2.High quality grape skin extract has been widely added into the beverage and the wine, cosmetics as the functional content;

3. Grape skin extract is widely added into all kinds of foods such as cake, cheese as the nurture, natural antiseptic in Europe and USA, and it has increased the safety of the food.

What is Grape Skin extract?

Grape skin extract are industrial derivatives from whole grape seeds that have a great concentration of vitamin E, flavonoids, linoleic acid, and OPCs. Typically, the commercial opportunity of extracting grape seed extract constituents has been for chemicals known as polyphenols, including oligomeric proanthocyanidins recognized as antioxidants.

Grape skin extract is rich in Oligomers Procyanidin Complexes (OPC) , which is a powerful antioxidant. In addition to the ultra rich potence of over 20 times higher than Vitamin C. Grape skin extract is also 50 times better than Vitamin E. Grape skin extract helps to strengthen the immune system, and also slowdown the aging process, which is of very high market value. Procyanidin B2, which is the most active compound to neutralize free radicals that cause aging, is available only in Grape Seed.

In Europe, OPC from grape skin extract proanthocyanidins has been adopted and used for several decades as a safe and effective compound. Grape skin extract has no record of any acute or chronic toxicity, no harmful reaction even under very high dosage. For these reasons, grape skin extract proanthocyanidins has become a new star in the food supplement market.

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Iodine and Starch Experiment | Iodine Experiment | Starch Experiment | Science experiments for kids

Simple and easy experiment to demonstrate the iodine with starch reaction!

For this test you will need:
• Two test tubes
• Soluble starch powder
• Iodine solution
• Water
• Dropper
Procedure:
• Put some starch powder into a test tube and fill the test tube with water.
• Mix the starch in the test tube well until the starch dissolves in the water.
• Fill the other test tube with normal water.
• Place both the test tubes in a test tube stand.
• Using a dropper take iodine solution.
• Put some drops in each test tube.
• Observe that the test tube with starch solution turns to purple black color.
• The other test tube with normal water retains the color of iodine i.e orange or yellow.
Explanation:
Starch is a mixture of amylose and amylopectin, which are different forms of glucose/starch.
Amylose in starch is responsible for the formation of a deep blue black color.
Amylase is long polymer chains of glucose units connected by an alpha acetal linkage and looks much like a coiled spring.
However iodine is a potassium iodide reagent and it is not very soluble in water.
So, iodine is prepared by dissolving it in water in an aqueous solution of potassium iodide. This results in a linear tri-iodide ion (I3−) complex in iodine which is soluble.
This tri-iodide ion (I3−) slips into the coil of the starch causing an intense or deep blue-black color.