Flaxseed Extract Flax Lignan Secoisolariciresinol Diglucoside (SDG) Powder
Molecular Weight: 686.70 g/mol
Specification: 20% and 40% secoisolariciresinol diglucoside
Solubility: Better water solubility
Appearance: Brown Fine Powder
Test Method: UV
Origin: China
Lead time:1-3 days
Storage: Cool dry place and avoid light
Shelf Life: 2 years
MOQ: 1KG
Sample: Free sample available
Certs: GMP, ISO9001:2015, ISO22000:2018, HACCP, KOSHER, HALAL
Advantage: 100,000 level clean production workshop, Non-additive, Non-GMO, radiationless
qualified product.
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Flaxseed Extract Flax Lignans Secoisolariciresinol Diglucoside (SDG) Powder Manufacturer/Supplier
Healthkintai® specializes in manufacturing and supplying flaxseed extract flax lignan secoisolariciresinol diglucoside (SDG) powder. We mainly provide the specifications with the purity of 20% and 40%.
SDG is the key functional lignan component in flaxseed, widely studied as an antioxidant and phytoestrogen precursor, and primarily used in scientific research and dietary supplement applications.
If you require 20% or 40% secoisolariciresinol diglucoside (SDG) powder, please feel free to contact us at health@kintaibio.com.

Our flaxseed extract flax lignan secoisolariciresinol diglucoside (SDG) powder and Structure
The TDS of Flaxseed Extract Flax Lignans Secoisolariciresinol Diglucoside (SDG) Powder
|
Item |
Specification |
Testing method |
|
Purity |
≥40% secoisolariciresinol diglucoside |
UV |
|
Appearance (Color) |
Brown fine powder |
Organoleptic |
|
Loss on drying |
2% |
USP<731> |
|
E. coli |
Negative |
GB 4789.3 |
|
Salmonella |
Negative |
GB 4789.4 |
|
Heavy Metals (Total) |
≤10.0 ppm |
GB 2762-2025/ICP-MS |
|
Arsenic (As) |
≤ 1.0 ppm |
GB 2762-2025/ICP-MS |
|
Lead (Pb) |
≤ 3.0 ppm |
ICP-MS |
|
Mercury (Hg) |
≤ 0.1 ppm |
ICP-MS |
|
Cadmium (Cd) |
≤ 1.0 ppm |
ICP-MS |
Regulatory Status of Flaxseed Extract Flax Lignans Secoisolariciresinol Diglucoside (SDG)
FDA
In 2009, the U.S. Food and Drug Administration (FDA) completed its review of the safety data for flaxseed and flaxseed meal, classifying them as “Generally Recognized as Safe” (GRAS) under GRN No. 280.
Flaxseed Extract Flax Lignans Secoisolariciresinol Diglucoside (SDG) Botanical Source
Plants such as sesame, barley, and carrots also contain lignans, but their levels are significantly lower than those in flaxseed.
We choose flaxseeds produced in Huining, Gansu, as our botanical source. Huining is acclaimed as the “Flaxseed Capital of China,” all thanks to its climatic features—consistently low rainfall, abundant sunlight, and significant diurnal temperature variation—coupled with its pollution-free environment and soil rich in elements such as magnesium, manganese, vanadium, selenium, and molybdenum.
Our flaxseed extract flax lignan secoisolariciresinol diglucoside (SDG) powder is primarily extracted from the dried seeds of flax (Linum usitatissimum), specifically from the flaxseed hulls, as they contain the highest concentration of the lignan.

Flaxseed Extract Flax Lignans Secoisolariciresinol Diglucoside (SDG) Powder Manufacturer Process Flow Chart
We follow the process below to produce our flaxseed extract flax lignan secoisolariciresinol diglucoside (SDG) powder:

Flaxseed Extract Benefits for Hair and Skin
Flaxseed extract benefits hair and skin by providing deep hydration, essential nutrients (omega-3, vitamins E and B), and antioxidants.

Sample available! Contact us to get more details. >>>
Flaxseed Extract Secoisolariciresinol Diglucoside (SDG) Benefits
Secoisolariciresinol Diglucoside and Diabetes
Reference: https://pubmed.ncbi.nlm.nih.gov/23271000/
- Research indicates that SDG has the anti-diabetic effect because of its antioxidant and anti-inflammatory properties and insulin-sensitizing mechanisms.
- SDG supplementation has been shown to improve glycemic control, reduce oxidative stress, and modulate lipid profiles in animal models of diabetes.
- Some studies suggest that SDG may help protect pancreatic beta-cell function and decrease insulin resistance. Furthermore, SDG and its metabolites can inhibit enzymes such as alpha-glucosidase, thereby lowering postprandial blood glucose spikes.

Secoisolariciresinol Diglucoside and Breast Cancer
Reference: https://www.sciencedirect.com/science/article/pii/S0022316622065853
·Blocking Stimulatory Signals
Inhibiting the development and progression of estrogen-dependent tumors such as hormone receptor-positive breast cancer.
·Regulating Estrogen Metabolism
SDG can precisely inhibit the activity of key enzymes in estrogen synthesis, reducing the production of ovarian estrogen at the source and lowering the body’s estrogen levels.
·Inhibiting Tumor Cell Proliferation
After being metabolized by beneficial microorganisms in the human digestive tract, SDG is converted into two active metabolites: enterodiol and enterolactone.
These metabolites possess both estrogenic and anti-estrogenic properties. They can interfere with the DNA replication and division of breast cancer cells, inhibit tumor cell proliferation, and induce programmed apoptosis of cancer cells, directly curbing the growth and spread of breast cancer.

Where Can I Buy Secoisolariciresinol Diglucoside Powder?
Healthkintai® is a professional manufacturer and supplier of raw materials for dietary supplements. Our flaxseed extract flax lignan secoisolariciresinol diglucoside (SDG) powder is your best choice.
Our advantages
- Whole-process low-temperature treatment maximizes the retention of SDG’s pubchem.
- Adopting the combined process of “ethanol extraction + resin purification,” the product purity reaches over 40%.
- Sourced from Huining, Gansu Province, the raw materials are free from pesticide residues and heavy metals exceeding limits, complying with domestic and international standards such as GB 28050 and FDA GRAS.
- Processed wastewater and waste residues are recyclable, meeting green production requirements and suitable for the large-scale supply of raw materials for functional foods and health supplements.
If you are looking for 20% or 40% secoisolariciresinol diglucoside (SDG) powder, please contact us at health@kintaibio.com.
Are There Any Side Effects of Secoisolariciresinol Diglucoside?
Secoisolariciresinol diglucoside (SDG) is a natural plant active ingredient, so it can be safe when used within the recommended dosage. Its side effects are usually mild.
Gastrointestinal discomfort
Bloating, diarrhea, abdominal pain, and increased flatulence.
(A small number of people may experience nausea or constipation.)
Recommendations for management:
You can start with 50 mg per day and gradually increase to the recommended dosage to avoid large intakes at one time, take it with meals to reduce gastrointestinal irritation, and drink plenty of water to aid the metabolism of dietary fiber and alleviate discomfort.
FAQ
1. What foods contain secoisolariciresinol?
Secoisolariciresinol is usually found in plant-based foods, and flaxseeds are the richest source. It is also present in sesame seeds, pumpkin seeds, rye, wheat, barley, broccoli, cauliflower, strawberries, blueberries, coffee, tea, and wine.
2. How are flaxseed lignans used for dogs?
Flaxseed lignans are often used to support dogs’ skin health, joint mobility (arthritis), immune function, and even hormonal balance (like in Cushing’s disease), typically given as ground seeds, oil, or specialized supplements.
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