Pterostilbene Bulk Powder

Pterostilbene Bulk Powder Supplier：

Guanjie Biotech is a Pterostilbene Bulk Powder supplier. Bulk Pterostilbene Powder is White Powder and the assay extends to 98%. High quality. From the purchase of raw materials to the delivery of finished products, each step of the process strictly follows the quality control standards to ensure the stability and reliability of product quality. And we test by the HPLC method. If you want to buy Pterostilbene powder, we provide high-quality products and good service. Welcome to enquiry:info@gybiotech.com.

 

COA

 

Item	Specification	Result	Method
Basic Product Information
Country of Origin	China	Conform	/
Marker Compounds
Trans-Pterostilbene	>99.0%	99.66%	HPLC
Organoleptic Data
Appearance	Off-white fine powder	Conform
Taste	Characteristic	Conform
Physical Characteristics
Identification	Positive	Comfort	IR, NMR
Particle Size (80 mesh)	NLT98% through 80Mesh	Conform	80Mesh Screen
Melting point	89.0℃-92.0℃	90.2℃	GB21781-2008T
Loss on Drying	<1.0%	0.65%	GB/T 14769-1993
Ash Content	<0.5%	0.22%	AOAC 942.05, 18th
Solubility	Soluble in ethanol, acetone, aether etc.; insoluble in water.	Conform	Visual
Solvent Residue	Eur.Pharm.	Conform	GJ-QCS-1007
Heavy Metals
Total Heavy Metals	<10 ppm	Conform	USP <231>, method II
Arsenic(As)	<2.0 ppm	Conform	AOAC 986.15, 18th
Lead(Pb)	<2.0 ppm	Conform	AOAC 986.15, 18th
Cadmium(Cd)	<0.5 ppm	Conform	AOAC 986.15, 18th
Mercury(Hg)	<0.5 ppm	Conform	AOAC 971.21, 18th
Pesticide Residue
666	<0.2ppm	Conform	GB/T5009.19-1996
DDT	<0.2ppm	Conform	GB/T5009.19-1996
Microbiology
Total Plate Count	<1,000cfu/g	Conform	AOAC 990.12, 18th
Total Yeast & Mold	<100cfu/g	Conform	FDA (BAM) Chapter 18, 8th Ed.
E. Coli	Negative	Negative	AOAC 997.11, 18th
Salmonella	Negative	Negative	FDA (BAM) Chapter 5, 8th Ed.

 

Physical and Chemical Properties

1. Physical Properties

• Appearance and state

Pterostilbene is generally a white crystalline powder. Pterostilbene bulk powder is relatively stable during storage and transport.

• Solubility

It has good solubility in organic solvents. For example, it can show good solubility in alcohol solvents such as ethanol and methanol. It can be effectively extracted using alcoholic solvents in the process of extracting and purifying pterostilbene. However, its solubility in water is relatively low. This is due to the high number of hydrophobic groups in its molecular structure, making it more difficult to dissolve in more polar water.

• Melting Point

The melting point ranges from about 89 - 92°C. It is an important physical substance. The melting point is an important physical property of a substance. Determination of its melting point can assist in determining the purity of pure pterostilbene powder. Higher levels of impurities usually result in a wider range or lower melting point.

• Odour and taste

Bulk Pterostilbene has almost no specific odour and has a slightly bitter taste. This relatively mild odour and taste also helps to some extent when it comes to its analytical identification. This can exclude interference from impurities that have a strong odour or taste.

• Density

Its density is greater than that of water, being around 1.25 g/cm³. This property is of some value in operations involving the separation and extraction of astragalus. For example, in certain density gradient centrifugation or extraction processes, separation can be achieved based on the difference between its density and that of other solvents or substances.

 

2. Chemical Properties

• Stability

At room temperature and pressure, Pterostilbene is relatively stable. However, its chemical structure may change under conditions of light, high temperature or the presence of strong oxidising agents. For example, in prolonged exposure to sunlight or high temperatures, it may undergo oxidative reactions, resulting in a decrease in its antioxidant and other activities.

• Redox Reactions

Trans Pterostilbene powder has some antioxidant properties. This is one of its most important chemical properties. It contains phenolic hydroxyl groups in its molecular structure. It is capable of scavenging free radicals in the body by providing hydrogen atoms to act as an antioxidant. During the reaction with free radicals, the phenolic hydroxyl group is oxidised to a quinone structure. At the same time, the quinone structure can be reduced back to the original phenolic hydroxyl structure under suitable reducing conditions.

• Acid-base reaction

The phenolic hydroxyl group in the molecule of pterostilbene bulk powder gives it a certain acidity. Under alkaline conditions, the hydrogen atoms on the phenolic hydroxyl group can be replaced by alkali metal ions to form the corresponding salts. This acid-base reactivity property also provides the basis for its application in chemical modifications and pharmaceutical preparations, among others. For example, its chemical form and reactivity can be controlled by adjusting the acid-base level.

 

Safety

• General Safety

Pterostilbene Bulk Powder is considered relatively safe at normal doses used. In many studies, Bulk Pterostilbene powder has not been found to cause serious acute toxicity in humans. It has some similarities to resveratrol in terms of chemical structure and properties. Resveratrol has been extensively studied and is considered safe to some extent. As a structurally similar compound, Pterostilbene has also been shown to have a favorable safety profile.

 

• Skin Safety

When used in skincare products, Pterostilbene is safe for the skin in most cases. It can help protect the skin from free radical damage, inflammation, and UV rays. However, for some people with sensitive skin, there may be an allergic reaction. This is because everyone has different skin sensitivities. Just like some people are allergic to pollen and others are not. Rigorous skin irritation and allergy testing are required to ensure safety when adding pterostilbene powder to skin care products.

• Oral Safety

In terms of oral administration, current studies have shown that at appropriate doses Pterostilbene powder has no significant toxicity. However, as it will be metabolized in the body its metabolic pathways and products require further study. If overdosed orally, it could potentially burden organs such as the liver and kidneys. This is because these organs play a key role in the metabolism and excretion of drugs and compounds. For example, the cytochrome P450 enzyme system in the liver is involved in the metabolism of Zytanax. Excessive amounts of pure pterostilbene powder may interfere with the normal metabolic functions of the liver.

 

• Long-term safety

More research is needed on the long-term safety of pterostilbene pure powder. No serious adverse effects were found in short-term experiments and some long-term cellular experiments. However, some unpredictable effects may occur with long-term use in humans. For example, it is not clear whether long-term use will potentially alter the body's immune system, endocrine system, and so on. Moreover, pterostilbene bulk powder may have certain biological activities. Such as antioxidant and anti-inflammatory functions. Whether long-term use of these functions will lead to adaptive changes in the body's regulatory mechanisms is also a question that needs to be investigated.

 

Company Advantages:

Guanjie Biotech's factory is fully qualified. We have many kinds of SC extract production licenses and carry out the record production of traditional Chinese medicine extracts. And we are the Pterostilbene Bulk Powder manufacturer of export food production. We have various quality, HALAL, and KOSHER certificates. The facilities and equipment are standardized, and the production quality management system is complete.

We have a competent testing capacity complete, technology, production, and quality team. We can provide customized products with various active ingredients for customers' needs. At the same time to meet the high-end customer factory inspection, extended audit, and filing needs.

 

Certification

 

Package & Shipment

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