| Customization: | Available |
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| Certification: | ISO, FDA |
| Assay Method: | HPLC, UV, Gc |
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Wholesale Supply Herbal Extract 98% Quercetin Powder
Quercetin is a potent antioxidant and has anti-inflammatory activity, protecting cellular structures and blood vessels from the damaging effects of free radicals. It improves blood vessel strength. Quercetin inhibits the activity of catechol-O-methyltransferase that breaks down the neurotransmitter norepinephrine. This effect may lead to elevated levels of norepinephrine and an increase in energy expenditure and fat oxidation. It also means quercetin acts as an antihistamine leading to relief of allergies and asthma. As an antioxidant, it reduces LDL cholesterol and offers protection from heart disease.
| Item | Specification | Result |
| Assay (Anhydrous substance) |
95.0%-101.5% | 95.2% |
| Appearance | Yellow, crystalline powder | Conforms |
| Solubility | Practically insoluble in water,Soluble in aqueous alkaline sol. | Conforms |
| Loss on drying | ≤12.0% | 10.95% |
| Sulphated ash | ≤0.5% | 0.14% |
| Melting point | 305-315°C | 310-312°C |
| Total Heavy Metals | ≤10ppm | Conforms |
| Pb | ≤3.0ppm | Conforms |
| As | ≤2.0ppm | Conforms |
| Hg | ≤0.1ppm | Conforms |
| Cd | ≤1.0ppm | Conforms |
| Microbiological | ||
| Total Plate Count | ≤1000cfu/g | Conforms |
| Total Yeast & Mould | ≤100cfu/g | Conforms |
| E. Coli | Negative | Negative |
| Salmonella | Negative | Negative |
Established in 2007, the Nutriherb team is a leading manufacturer of plant extracts, specializing in the extraction of active ingredients from natural plants for the beauty, health, pharmaceutical, and food industries. We leverage advanced technology and state-of-the-art equipment to research and produce high-quality plant extracts.
In terms of quality management, we strictly adhere to Good Manufacturing Practice (GMP) and ISO standards. We collaborate with third-party laboratories to rigorously monitor and test product quality, ensuring compliance with international quality benchmarks.
Committed to excellence, we provide our customers with high-quality plant extracts and offer tailored services to deliver personalized solutions that meet specific requirements.
Q1: How to contact with us?
Click the "Contact Supplier" And then send us message the product you interest in, you will get valid reply within TWO hours.
Q2:Which kind of payment terms do you accept?
For small order,you can pay by T/T,or Paypal,nomal order by T/T to our company account
Q3:Can you give me a discount price?
Sure,It depends on your qty.
Q4:How can i get a sample?
free samples is available,but freight charges will be at your account and the charges will be return to you or deduct from your order in the future.
Q5: How to confirm the Product Quality before placing orders?
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Q6:How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us,we will send you free goods for replacement or refund your loss.
Q7:What products does your company have?
A:We have Quercetin for Dogs, Activated Quercetin, Quercetin Anhydrous, Quercetin Dihydrate, Sophora Japonica Extract, Quercetin.
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