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Peanut skin extract – Proanthocyanidins
The main components of peanut skin include flavonoid compounds (such as quercetin and procyanidin oligomers), phenolic substances (like resveratrol), and natural pigments. Peanut Skin Extract is a substance extracted from the epidermis of peanuts (Arachis hypogaea) seeds. Its primary active ingredient is polyphenolic procyanidins, and its purity, determined by UV detection, reaches 95%. It appears as a fine reddish-brown powder.
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Health Supplement
Standardized Extract
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- Product Description
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- Commodity name: Peanut skin extract – Proanthocyanidins
The main components of peanut skin include flavonoid compounds (such as quercetin and procyanidin oligomers), phenolic substances (like resveratrol), and natural pigments. Peanut Skin Extract is a substance extracted from the epidermis of peanuts (Arachis hypogaea) seeds. Its primary active ingredient is polyphenolic procyanidins, and its purity, determined by UV detection, reaches 95%. It appears as a fine reddish-brown powder.
I. Basic Product Information
Project
Content
Product Name
Peanut Skin Extract – Proanthocyanidins 95%
English name
Peanut Skin Extract - Procyanidin 95%
Latin name
Arachis hypogaea Linn.
Source
The seed coat (peanut skin) of Arachis hypogaea, a plant belonging to the genus Arachis in the family Fabaceae.
Active ingredient
Proanthocyanidins
Product Specifications
95%
Detection method
UV
Product characteristics
Brownish-red powder
Solubility
Easily soluble in hot water and dilute ethanol solutions.
II. Product Introduction
1. Source
Peanut skin extract—procyanidins 95%—is a highly purified active ingredient derived from the seed coat (commonly known as peanut skin or peanut hull) of Arachis hypogaea, a plant belonging to the legume family. It is extracted and refined using modern biotechnology processes that maximize the preservation of procyanidins’ structural integrity and biological activity.
2. Core Efficacy and Applications
(1) The pharmaceutical field
Proanthocyanidins extracted from peanut skin exhibit remarkable biological activity, stimulating bone marrow hematopoiesis and promoting platelet production. They can be used as an adjunct therapy for thrombocytopenia and to alleviate symptoms of anemia. The polyphenols abundant in peanut skin enhance capillary resilience and reduce vascular permeability, providing relief for mild bleeding symptoms such as gingival bleeding and epistaxis. Additionally, they can serve as an auxiliary treatment for allergic purpura and immune thrombocytopenic purpura. Furthermore, their anti-inflammatory and antioxidant properties promote wound healing, reduce the risk of infection, and accelerate tissue repair, making them suitable for recovery from postoperative or traumatic wounds.
(2) Food Industry
As a natural coloring agent, peanut skin extract can be used to color Western-style hams, pastries, sausages, carbonated beverages, candies, cookies, and other food products, imparting them with a reddish-brown hue. The maximum recommended usage level is 0.1–0.4 g/kg, depending on the specific type of food. Meanwhile, its proanthocyanidin component acts as a natural antioxidant, helping to extend the shelf life of food products, improve their texture and flavor, and enhance their nutritional value.
(3) Cosmetics field
Thanks to its powerful antioxidant properties, peanut skin extract—containing 95% procyanidins—can scavenge free radicals, inhibit skin aging, and reduce wrinkle formation. Its anti-inflammatory properties help soothe sensitive skin and alleviate issues such as redness and itching. It can be used in the formulation of antioxidant skincare products, sensitive-skin repair products, and anti-aging cosmetics.III. Technical Specifications and Testing Standards
Testing items
Testing standards
Test results
Detection method
Specifications
≥95.0%
95.1%
UV
Characteristics
Brownish-red powder
Purple-brown powder
Visual inspection
Smell
Unusual odor
Unusual odor
Sensory evaluation
Granularity
99% passes through an 80-mesh sieve.
99% passes through an 80-mesh sieve.
Sift
Heavy metals
≤20 ppm
<20 ppm
AAS
Lead
≤2 ppm
<2 ppm
AAS
Arsenic
≤2 ppm
<2 ppm
AAS
Moisture
≤5.0%
2.28%
Constant-temperature drying method
Ash content
≤5.0%
1.02%
High-temperature incineration method
Total colony count
≤1000 CFU/g
80 CFU/g
Plate Count Method
Mold yeast
≤100 CFU/g
20 CFU/g
Plate Count Method
Escherichia coli
Not detectable
Not detectable
Selective medium method
Salmonella
Not detectable
Not detectable
Selective enrichment method
IV. Packaging and Storage
1. Packaging specifications
● Small packaging: Sterile aluminum foil pouch (lined with a double-layer polyethylene bag)
● Large packaging: 25 kg cardboard drum (lined with double-layer polyethylene bags, drum lid sealed);
● Export packaging: Packaging available upon request.
2. Storage conditions
● Storage conditions: Store in a sealed, cool, and dry place (temperature ≤25℃, relative humidity ≤60%), and avoid direct sunlight, high temperatures, and humidity.
● Shelf life: 24 months when stored under appropriate conditions and the package remains unopened.
● Transportation precautions: Handle with care and avoid crushing or damage; during transportation, protect from sunlight and moisture.
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Contact Information
Office Address: Room 301, Building 3, Oriental Plaza, Nanerhuan East Sec, Beilin District, Xi'an City, Shaanxi Porvince, China
Factory Address: No. 16, East Area, Hongqing Industrial Park, Baqiao District, Xi'an City, Shaanxi Province, China
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