[Latin Name] Polygonum Cuspidatum Sieb. et Zucc

[Plant Source] China

[Specifications] Resveratrol 50%, 95%, 98% by HPLC

[Appearance]Brown or white fine powder

[Plant Part Used] Rhizome&Root

[Particle size] 80 Mesh

[Loss on drying] ≤5.0%

[Heavy Metal] ≤10PPM

[Storage] Store in cool & dry area, keep away from the direct light and heat.

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

[General feature]

1.100% natural source. Our resveratrol is 100% extracted from natural herb, very safe and more bioactive, which is rich with both CIS-resveratrol and trans-resveratrol.

2.Our resveratrol almost have no unpleasant taste compare to other resveratrols and it can be easier to take by oral.

3.We offer resveratrol at a very competitive price with superb quality.

4.We have a very large output and could manufacturer as customer particular requirement.

[Function]

Resveratrol is an active component extracted from Huzhang (Polygonum cuspidatum) in China.

It is an antioxidant phenol and a potent vasodilator that inhibits serum triglyceride synthesis, lipid peroxidation, and platelet aggregation.

It is extensively used for treatment of blood vessel disease such as atherosclerosis and hyperlipidemia. In addition, it has anti-virus and anti inflammatory activity, can treat acute microbial infections and viral hepatitis.

Plant Care
In general, Stevia should be treated as a vegetable crop. When hot weather sets in, usually a month after planting, beds should be mulched 3 to 6 inches deep with organic residue such as grass clippings, chopped leaves, straw, hay, or compost. This will protect the shallow feeder roots and hold in moisture. Plant growth is slow at first, accelerating by mid summer.

A consistent moisture supply is important for Stevia. Irrigate once or twice a week, whenever rain fails to water the plants. Sandy soils require more frequent irrigation. Trickle irrigation is ideal, ensuring consistent moisture levels without wetting leaves. A simple and effective system is the black, “weeping” soaker hose made from recycled rubber. Place a soaker hose between the two rows of plants, beneath the mulch. Attach to a garden hose and turn the water on at a trickle for a couple of hours. The system can be automated with the addition of a timer.

Side-dressing is usually not necessary, but low nitrogen or organic fertilizer may be applied in the summer as plant growth begins to accelerate. Excess nitrogen causes tender growth and reduced leaf sweetness.

Stevia may be affected by two lesion-producing fungal diseases, Septoria steviae and Sclerotinia sclerotiorum. With Sclerotinia, dark brown lesions form on stems, near the soil line, followed by wilting and eventual collapse of the plant. Stevia plants are usually full grown before diseases appear. As harvest time nears, commercial growers watch plants closely and harvest the entire crop at the first sign of disease. Meticulous weed control (by hand) permits strong growth, which helps plants resist disease. Humid, wet weather and standing water favor the development of fungal diseases, making raised beds or hills a preventative measure. Additionally, avoid wetting leaves during irrigation. Stevia is usually the last plant insects will feed on, so pests are seldom a problem outdoors. Aphids, thrips, and whiteflies can cause damage in heavily infested greenhouses.

Sugar amount Equivalent Stevia powdered extract Equivalent Stevia liquid concentrate
1 cup 1 teaspoon 1 teaspoon
1 tablespoon 1/4 teaspoon 6 to 9 drops
1 teaspoon A pinch to 1/16 teaspoon 2 to 4 drops

Sugar amount Equivalent 1 cup = Stevia powdered extract Equivalent 1 teaspoon = Stevia liquid concentrate 1 teaspoon
Sugar amount Equivalent 1 tablespoon = Stevia powdered extract Equivalent 1/4 teaspoon = Stevia liquid concentrate 6 to 9 drops

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