Product Introduction
| Item | Specification |
| Product Name | Folium Isatidis Extract |
| Synonyms | Isatis Indigotica Leaf Extract; Da Qing Ye Extract; Natural Folium Isatidis Powder |
| Latin Source Name | Isatis indigotica Fort. |
| CAS Number | Composite Plant Extract (No Single CAS) |
| Main Active Ingredients | Indirubin, Indigo, Flavonoids, Organic Acids, Anthraquinones |
| Specification | 10:1, 20:1, 50:1; Indirubin 0.3% (HPLC) |
| Appearance | Dark green to brown fine powder, uniform texture, slight herbal odor, no caking, no visible impurities or abnormal discoloration |
| Loss on Drying | ≤ 5.0% |
| Residue on Ignition | ≤ 7.0% |
| Particle Size | 100% pass 80 mesh |
| Testing Method | HPLC / UV / Moisture Test / Ash Test / Microbiological Inspection |
| Production Method | High-quality Isatis Indigotica Leaf Selection → Cleaning & Drying → Crushing → Water-Alcohol Circulating Extraction → Concentration → Purification → Spray Drying → Fine Screening |
| Solubility | Soluble in hot water and ethanol, partially soluble in cold water, stable in neutral and weak acidic formula systems |
| Core Feature | Pure natural traditional Chinese herbal extract, rich in multiple bioactive components, strong antiviral and anti-inflammatory activity, stable efficacy and high safety for food and skincare application |
| Package | 10g/50g sealed sample bottle, 1kg/25kg vacuum aluminum foil drum; moisture-proof, light-proof and sealed packaging, customized specifications supported |
| Storage | Store in dry, cool and dark sealed environment; avoid high temperature, direct sunlight and humid air to prevent component deterioration, mildew and active ingredient loss |
| Shelf Life | 24 months under standard sealed storage conditions |
Product Description
Folium Isatidis Extract is a premium natural botanical extract derived from the dried leaves of Isatis indigotica Fort., a classic medicinal and edible herb in traditional Chinese medicine. Concentrated through modern low-temperature extraction and spray-drying technology, this product retains abundant natural bioactive compounds including indirubin, indigo, flavonoids, organic acids and anthraquinones. With standardized concentration ratios and stable active content, Folium Isatidis Extract features outstanding antiviral, anti-inflammatory, antioxidant and immune-regulating properties, serving as a high-value functional raw material widely used in immune health supplements, antiviral functional foods, soothing skincare products and biological research.
Our Folium Isatidis Extract adopts strict raw material screening and advanced circulating extraction technology. We select high-quality mature isatis leaves with no pesticide residue and no mildew, and perform low-temperature water-alcohol dual-phase extraction to fully retain heat-sensitive active ingredients. After multi-stage purification, concentration and sterile spray drying, the final powder features uniform color, pure herbal flavor and ultra-low impurity content. The whole production process complies with GMP food-grade production standards, with strict detection of moisture, ash, heavy metals and microorganisms, ensuring safe, stable and efficient application in food, health care and cosmetic industries.
Folium Isatidis Extract is globally recognized for its powerful broad-spectrum antiviral activity. It can effectively inhibit the activity of multiple viruses including influenza virus, herpes simplex virus, mumps virus and cytomegalovirus, assisting the body in resisting external viral invasion and reducing the risk of seasonal infectious discomforts. It is widely applied in daily immune conditioning and viral defense functional formulas.
In terms of anti-inflammatory and antioxidant efficacy, this natural extract can significantly reduce the secretion of pro-inflammatory factors such as TNF-α, IL-6 and IL-1β, relieve chronic mild inflammation in the body and skin. It scavenges excess free radicals, inhibits cellular oxidative damage, reduces skin redness and sensitivity caused by external irritation, and repairs fragile skin barriers, showing excellent soothing and stabilizing effects for problematic and sensitive skin.
As a classic immune-regulating herbal ingredient, Folium Isatidis Extract can effectively activate the body’s immune cell activity, enhance systemic immune defense capacity, improve physical sub-health caused by low immunity, and maintain the balance of the body’s immune system. It delivers gentle and non-irritating conditioning effects, suitable for long-term daily immune health care.
In skincare applications, the natural anti-inflammatory and antibacterial properties of Folium Isatidis Extract help inhibit the reproduction of harmful skin microorganisms, purify skin microecology, relieve inflammatory acne and skin swelling, and improve rough and dull skin texture. Its mild botanical formula is compatible with various skincare systems, ideal for developing soothing, repairing and anti-inflammatory cosmetic products.
Our premium Folium Isatidis Extract is uniform dark green to brown fine powder with delicate loose texture, no caking and no peculiar odor. Each batch is strictly tested by HPLC to ensure stable active ingredient content and consistent batch quality. Multiple specifications including 10:1, 20:1, 50:1 and 0.3% indirubin standardized content are available to meet different formula R&D and production requirements.
Functions & Benefits
Broad-Spectrum Antiviral Defense
Effectively inhibits multiple influenza and herpes viruses, resists external viral invasion, reduces seasonal physical discomforts, and supports daily viral defense.
Natural Anti-Inflammatory & Soothing
Suppresses pro-inflammatory factor expression, relieves internal chronic inflammation and skin inflammatory reactions, alleviates redness, swelling and sensitivity, and stabilizes skin health.
Immune System Regulation
Activates immune cell activity, enhances body immune defense capability, improves low-immunity sub-health, and maintains long-term immune balance.
Efficient Antioxidant Protection
Scavenges internal and skin free radicals, reduces oxidative damage, delays cellular aging, and improves dull and rough skin texture.
Broad-Spectrum Antibacterial Effect
Inhibits the growth and reproduction of harmful bacteria, purifies skin and internal microecology, and assists in improving inflammatory skin problems.
Pure Natural & Food-Grade Safety
Derived from natural isatis leaves, physical extraction and purification process, zero chemical additives, mild and non-toxic, safe for long-term internal and external use.
Stable & Customizable Specification
Multiple concentration ratios and standardized indirubin content specifications, stable batch efficacy, high formula compatibility for diverse industrial applications.
Applications
Immune Support Health Supplements
Core functional raw material for immune-regulating and antiviral health products, used in capsules, tablets and solid beverage formulas for daily immune conditioning.
Anti-Inflammatory & Soothing Skincare
Applied in sensitive skin repair, anti-acne and soothing skincare products to relieve skin inflammation, redness and swelling, and repair damaged barriers.
Seasonal Defense Functional Foods
Widely used in antiviral and immune-enhancing functional foods, oral liquids and dietary supplements for seasonal health protection.
Biomedical & Pharmacological Research
Served as standard natural herbal extract reagent for antiviral mechanism research, anti-inflammatory pharmacological experiments and immune-related studies.
Compound Herbal Formula Development
Compatible with various plant extracts to develop compound immune-enhancing, anti-inflammatory and antioxidant functional formulas.
Daily Health Care Raw Materials
Suitable for daily health conditioning products to improve sub-health state caused by low immunity and chronic inflammation.
FAQ
Q1: What is Folium Isatidis Extract used for?
A: Folium Isatidis Extract is a natural herbal extract from isatis leaves. It has excellent antiviral, anti-inflammatory, antioxidant and immune-regulating effects, widely used in immune health supplements, functional foods and soothing skincare products.
Q2: What are the main active ingredients of this extract?
A: The core active ingredients include indirubin, indigo, natural flavonoids, organic acids and anthraquinones, which jointly contribute to antiviral, anti-inflammatory and immune-boosting efficacy.
Q3: What specifications can you provide?
A: We support multiple specifications including 10:1, 20:1, 50:1 concentration ratios and 0.3% indirubin standardized content, with full HPLC testing and stable batch quality.
Q4: What is the difference between Folium Isatidis Extract and Isatis Root Extract?
A: Folium Isatidis Extract is extracted from isatis leaves, focusing on antiviral, anti-inflammatory and skincare soothing effects; Isatis Root Extract is from plant roots, mainly for heat-clearing and detoxifying, with different targeted efficacy directions.
Q5: How to store Folium Isatidis Extract correctly?
A: It needs to be sealed and stored in a cool, dry and dark environment. Avoid high temperature, strong light and humid conditions to prevent moisture absorption, mildew and active ingredient attenuation.
Q6: Can I get free test samples?
A: Yes, we provide free Folium Isatidis Extract test samples for formula R&D, efficacy verification and small-batch trial production. Bulk orders support customized packaging and professional technical guidance.
