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Soy Isoflavones Powder

Name: China Soy Isoflavones Powder Manufacturers Suppliers Factory - Bulk Soy Isoflavones Powder - Guanjie Biotech
Brand: Guanjie Biotech
SKU: 186523267

Product source: Natural non-GMO soybean germ
Test Method: HPLC
Specifications: 10%, 20%, 40%, 80%
CAS No.:574-12-9
Two Factories & Three production lines
GMP standard workshop & two independent laboratories
Certifications: Halal,ISO9001,NON-GMO,KOSHER,SC
Delivery term: DHL, FEDEX, Air freight,Sea freight
Provide Free Sample
MOQ: 1KG
Not for Private Person Sale

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Description

Natural Soy Isoflavones Powder: B2B OEM & Wholesale Supply for Functional Foods & Nutraceuticals

Guanjie Biotech is a Soy Isoflavones Powder supplier. Soy Isoflavone Powder is a premium plant-based phytoestrogen extracted from non-GMO soybeans, yielding a light yellow powder ideal for women's health formulations. Sourced directly from Guanjie Biotech's sustainable planting bases in the Qinling Mountains, we ensure complete supply chain traceability from harvest to extraction. We offer standardized HPLC assays (10%, 20%, 40%, 60%, and 80%) with flexible B2B bulk wholesale and custom OEM/ODM Soy Isoflavones solutions tailored for global brands. Guanjie Biotech has its own lab, testing center, factory, and sales team. Our high-quality soybean Isoflavone bulk powder and low-price products are welcome to contact us: at info@gybiotech.com.

Soy isoflavones Bulk powder

What Is Soy Isoflavone?

Soy isoflavone is a natural plant extract and flavonoid compound found in soybeans. As a type of phytoestrogen, soy isoflavones have a similar molecular structure to estrogen and can interact with estrogen receptors in the body. They are mainly concentrated in soybean seed coats, embryonic axes, and cotyledons. Key active compounds include Daidzin, Daidzein, Genistin, Genistein, Glycitin, and Glycitein. High-purity soy isoflavone powder is widely used in dietary supplements, functional foods, and nutraceutical products. As a professional soy isoflavone supplier, Guanjie Biotech provides standardized soy extract with consistent quality and reliable specifications.

Why Choose Guanjie Biotech?

● Innovative technology:

Focused on the development of patented natural products with 20 patented technologies.

● International Certification System:

Passed ISO9001, ISO22000, QS, Kosher, Halal etc.

● Strictly quality control system:

Almost all the testing items of bulk Soy Isoflavones Powder products are tested in-house.the assay, water, Odor, Heavy Metals, solvent residue, pesticide residue, Protein, Microbiological, and so on.

● Professional shipping：

Professional shipping agents have cooperated with us for more than 20 years, ensuring that the Soy Isoflavones Powder can be exported safely and quickly.

COA:

Botanical source:	Soy (Glycine max.)	Plant part used:	Soybean Germs
GMO:	Free	Extraction solvent:	Ethanol / Water
Extraction ratio:	60:1	Identification:	TLC
Irradiation:	Free	Country of origin：	CHINA
Items	Method	Specifications	Results
Appearance	Visual	Shallow Yellow powder	Shallow Yellow powder
Odor & Taste	Visual & taste	Characteristic	Characteristic
Particle size	USP<786>	100%Through 80 mesh	100%Through 80 mesh
Bulk density	USP<616>	45-62g/100ml	50g/100ml
Loss on drying	GB/T 5009.3	≤5.0%	3.45%
Sulphated ash	GB/T 5009.4	≤5.0%	3.89%
Total Isoflavones	HPLC	≥40.0%	41.36%
Daidzin	HPLC		28.61%
Glycitin	HPLC		10.63%
Genistin	HPLC		7.50%
Daidzein	HPLC		0.72%
Glycitein	HPLC		0.34%
Genistein	HPLC		0.36%
Heavy metals	GB/T 5009.74	≤10PPM	＜10PPM
Arsenic (As)	GB/T 5009.11	≤1PPM	＜1PPM
Lead (Pb)	GB/T 5009.12	≤2PPM	＜2PPM
Cadmium (Cd)	GB/T 5009.15	≤0.5PPM	＜0.5PPM
Mercury (Hg)	GB/T 5009.17	≤0.1PPM	＜0.1PPM
Total plate count	GB/T 4789.2	<1000cfu/g	Complies
Mould&Yeast	GB/T 4789.15	<100cfu/g	Complies
E.Coli	GB/T 4789.3	Negative	Negative
Salmonella	GB/T 4789.4	Negative	Negative
Staphylococcus	GB/T 4789.10	Negative	Negative
Storage	Keep container unopened in cool, dry place.
Conclusion	Comply with required standards.

How is Soy Isoflavones Produced?

What Are The Nutrition Sheet of Soy Isoflavones?

MOA:

Reagents and solution

Methanol (analytical grade)

Acetonitrile (HPLC-grade)

Redistilled water

Glacial acetic acid (analytical grade)

Apparatus

HPLC

Electronic balance

Chromatogram Condition

C18 stainless steel column 150 X 4.6mm 5µm

Mobile phase: acetonitrile, water

Grads conditions:

Time	%A	%B
0	83	17
5	83	17
26	70	30
30	65	35
35	65	35

Column temperature: 30 centigrade

Velocity of flow: 1.0ml/min

Detect wavelength: 254nm

Sensitivity: 0.005AUFS

Theoretical plate number calculated as Genistin is not less than 30000, calculated as Daidzin is not less than 6000.

Standard Solution Preparation

Take Soy Isoflavones Powder exactly Standard samples of Daidzin, Glycitin, Genistin, Daidzein, Glycitein and Genistein that were dried by P2O5 to continuously weight. Add methanol to make 0.10mg/ml, 0.05mg/ml, 0.15mg/ml, 0.05mg/ml, 0.05mg/ml, as standard sample solution.

Testing sample Preparation:

Accurately weight 25mg sample, and then put it into a 100 mL volumetric flask. Add 80% methanol about 70ml, heat to 60ºC, and ultrasonically dissolve it for 15-30minutes. Put it aside till room temperature. Then add 80% methanol to fix the volume. Shake it equally. Then filter through 0.45um PTFE filter film. Then get the testing sample.

Procedure

Under the above conditions of chromatography, after the HPLC system and baseline were stable, samples were measured. The content was calculated using the external standard method.

Calculate % of the Isoflavones in the sample by the following Formula

P1 X V1 X C1

--------------------- X 100%

P2 X W2

P1 = Peak Area of Sample

V1 = Volume of Sample

C1 = Concentration of Standard sample

P2 = Peak Area of Standard sample

W2 = Weight of Sample

How Many Types of Soy Isoflavones Have?

Soy Isoflavones Powder is a natural plant extract derived from soybeans and is widely used as a functional ingredient in dietary supplements, nutraceutical products, and health foods. Soy isoflavones are polyphenolic compounds and belong to a class of secondary metabolites produced during soybean growth. The main active components include genistein, daidzein, glycitein, genistin, and daidzin.

As a professional soy isoflavone powder supplier, manufacturers need to understand the differences between various sources of soy isoflavones to ensure product authenticity, consistent quality, and compliance with industry standards. Based on raw material sources and production methods, commercial soybean isoflavone powder can generally be classified into five categories.

1. Soy Isoflavones Extracted from Soybean Meal

Soybean meal is a common raw material for soy isoflavone extraction. It is the by-product remaining after soybean oil extraction and still contains valuable bioactive compounds. Through solvent extraction, purification, concentration, and drying processes, manufacturers can obtain soybean meal-derived isoflavone powder.

This type of soy isoflavone extract is widely used in dietary supplements and functional food applications due to its stable supply chain and cost-effective production. The final product can be standardized according to different specifications, such as 40% soy isoflavones, 60% soy isoflavones, or 80%soy isoflavones powder.

Parameter / Feature	40% Soy Isoflavones powder	60% Soy Isoflavones powder	80% Soy Isoflavones powder
Assay (HPLC)	≥40.0% Total Isoflavones	≥60.0% Total Isoflavones	≥80.0% Total Isoflavones
Appearance	Fine yellow-brown to light yellow powder	Light yellow fine powder	Off-white to pale yellow fine powder
Active Compounds	Genistein, Daidzein, Glycitein	Genistein, Daidzein, Glycitein	Genistein, Daidzein, Glycitein
Inert Matrix / Organic Matter	~60% natural soy matrix & fiber	~40% natural soy matrix	~20% residual natural soy matrix
Dose Volume Required	High (requires more powder per capsule)	Moderate	Low (ideal for small capsule sizes)
Solubility / Dispersibility	Moderate	Good	High (easier for refined formulations)
Primary Target Application	Standard tablets, daily multi-vitamin blends, functional foods	High-potency health supplements, women's health capsules	Premium pharmaceutical-grade supplements, micro-capsules

2. Soybean Germ Extract Soy Isoflavones

Soybean germ contains a higher concentration of certain bioactive compounds compared with other parts of the soybean. Soybean germ extract soy isoflavones are produced by extracting active components from soybean embryos through advanced separation and purification technologies.

Soy germ-derived soy isoflavone powder generally has a different composition profile, with relatively higher levels of some specific isoflavone glycosides. It is often selected for premium nutritional supplements that require higher-quality raw materials.

3. Mixture of Soybean Germ and Soybean Meal Extracts

Some commercial soy isoflavone supplements use a combination of extracts from both soybean germ and soybean meal. This approach allows manufacturers to optimize the ratio of different isoflavone compounds and achieve a balanced ingredient profile.

By combining different extraction sources, suppliers can customize products according to customer requirements, including isoflavone content, composition ratio, solubility, and application needs.

4. Mixtures of Synthetic Ingredients and Natural Soy Extracts

Certain products on the market may contain a combination of synthetic raw materials and naturally extracted soy isoflavones. These formulations are developed to adjust specific active ingredient levels or reduce production costs.

For manufacturers purchasing bulk soy isoflavone powder, it is important to verify product origin, extraction method, and quality documentation. Reliable suppliers should provide analytical reports, such as HPLC testing results, to confirm the authenticity and purity of soy-derived ingredients.

5. Plant Extracts Marketed as Soy Isoflavones

Some plant extracts from other botanical sources may contain similar compounds and could potentially be misrepresented as soy isoflavones or blended into soy isoflavone products. Authentic natural soy isoflavone powder should be traceable to soybean raw materials and supported by quality verification.

What Are The Main Components of Soy Isoflavones Powder?

Soy isoflavone powder is a natural plant extract mainly derived from soybeans. The primary active compounds in soy isoflavone extract are divided into two categories: isoflavone glycosides and free isoflavones (aglycones).

The glycoside forms include daidzin, genistin, and glycitin, which are the dominant forms naturally present in soybeans. In contrast, the free forms, including daidzein, genistein, and glycitein, are found in relatively lower concentrations. Among these compounds, daidzein and genistein are considered key bioactive components of soy isoflavone powder and are often used as quality indicators for standardized soy extracts.

In natural soybeans, approximately 85% or more of total soy isoflavones exist in glycoside forms, while free isoflavones generally account for less than 15% of the total content. Through advanced extraction and conversion technologies, manufacturers can increase the concentration of aglycone forms to meet specific formulation requirements.

High-quality soy isoflavone extract powder typically contains standardized levels of genistein, daidzein, and total isoflavones, making it suitable for applications in dietary supplements, functional foods, women's health products, and nutraceutical formulations.

soybean isoflavones Main components:

Soy isoflavones Buyer Guide

Soy isoflavones are natural plant extracts mainly derived from soybeans and are widely used in dietary supplements, functional foods, nutraceutical products, and women's health formulations. When purchasing soy isoflavone powder, buyers should evaluate raw material sources, purity, color, composition, and quality indicators to ensure product consistency and authenticity.

1. Raw Material Source: Soybean Meal and Soy Germ

The source of soybeans significantly affects the composition of natural soy isoflavones. Soybean meal is one of the most common raw materials for soy isoflavone extraction. It contains six major isoflavones, including glycosides such as genistin, daidzin, and glycitin, as well as aglycones such as genistein, daidzein, and glycitein. Among these compounds, genistin and daidzin usually represent a large proportion of total isoflavone content, while genistein and daidzein are considered important active components. Soy germ is another premium source of soy isoflavone extract. It generally contains higher levels of glycitin and glycitein, which can account for a significant percentage of total isoflavones.

2. Color and Appearance of Soy Isoflavone Powder

The natural color of soy isoflavone powder typically ranges from yellow to light yellow, depending on the extraction process and purity level. A natural soybean aroma and slightly bitter taste are common characteristics.

However, color alone should not determine quality. Extremely white powder with very high purity claims should be evaluated carefully, especially for products claiming 80% or higher soy isoflavone purity, as excessive processing or synthetic additives may affect the appearance.

3. Purity and Residual Sugar Content

Low-purity soy isoflavone extracts may contain residual sugars from soybean materials, which can result in darker color and a sticky texture during storage. High-quality soy isoflavone suppliers usually apply purification processes to reduce unwanted sugar content, improving stability and appearance.

4. G/D Ratio (Genistein/Daidzein Ratio)

The genistein to daidzein ratio (G/D ratio) is an important quality parameter for evaluating soy isoflavone composition. In natural soy extracts, the G/D ratio generally falls within a normal range of approximately 1.0–2.5. A significantly higher ratio may require additional verification to confirm the product's natural origin.

5. Saponin Content and Overall Quality

Soy saponins naturally coexist with soy isoflavones. Their presence does not necessarily indicate poor quality and may contribute additional functional value. However, higher saponin levels can make the powder appear darker.

When selecting bulk soy isoflavone powder for supplements, buyers should consider total isoflavone content, saponin levels, extraction technology, and testing reports rather than judging quality only by color.

A reliable soy isoflavone manufacturer should provide detailed specifications, COA reports, purity analysis, and traceable raw material information to support consistent product development.

What Do Soy Isoflavones Do?

● Relieve menopausal discomfort:

Soy isoflavones can regulate estrogen levels due to their estrogen-like effects, thereby relieving many symptoms of menopause.

● Prevention of osteoporosis:

The decrease of estrogen secretion level can easily lead to bone loss. Timely supplementation of soy isoflavones can effectively prevent the occurrence of osteoporosis.

● Prevention of breast cancer:

It can combine with estrogen receptors, thereby reducing the activity of estrogen and reducing the risk of breast cancer in women due to high estrogen levels.

● Prevention of senile dementia:

Supplementing with Marianna soy isoflavones powder can reduce blood concentration and prevent the deposition of specific types of proteins in the brain, thus preventing senile dementia.

● Improve menstrual discomfort: uneven secretion of estrogen leads to menstrual discomfort, and the bidirectional regulation of soybean isoflavones can normalize estrogen levels and improve menstrual discomfort.

● Prevention of cardiovascular disease:

Soy isoflavones can prevent the formation of atherosclerosis and prevent the occurrence of cardiovascular disease.

● Improve skin quality:

Taking Marianna soybean isoflavone powder can make women's skin smooth, delicate, smooth and elastic.

● Anti-aging:

Long-term supplementation of soy isoflavones can prevent premature ovarian function decline in women, thereby delaying the arrival of menopause and delaying aging.

● Improve the quality of sexual life:

The estrogen-like effect of soybean isoflavones can nourish yin and beauty, increase the secretion of gonads, thicken the vaginal epithelium, and enhance the elasticity of female vaginal muscles, thereby improving the quality of sexual life.

FAQs:

1. What is soy isoflavone powder used for?
Soy isoflavone powder is used for dietary supplements, functional foods, and women's health products as a natural plant-based ingredient.

2. Where does soy isoflavone powder come from?
Soy isoflavone powder comes from non-GMO soybeans, mainly extracted from soybean germs or soybean meal through purification processes.

3. What are the main components of soy isoflavones?
The main components are daidzin, genistin, glycitin, daidzein, genistein, and glycitein, measured by HPLC analysis.

4. What specifications of soy isoflavone powder does Guanjie Biotech supply?
Guanjie Biotech supplies standardized soy isoflavone powder with 10%, 20%, 40%, 60%, and 80% purity options for OEM/ODM applications.

5. How is soy isoflavone powder manufactured?
Soy isoflavone powder is manufactured by ethanol-water extraction, concentration, purification, drying, and HPLC quality testing.

6. What quality tests are performed on soy isoflavone powder?
Soy isoflavone powder is tested for assay, heavy metals, pesticide residues, microbiological limits, moisture, solvent residues, and HPLC profile.

Our Team:

Guanjie Biotech operates a 7000㎡ production facility, including a 2000㎡ GMP-certified workshop and a 500㎡ advanced quality control laboratory. Our Soy Isoflavone Powder manufacturing complies with international standards, including ISO9001, ISO22000, Non-GMO, Kosher, Halal, and QS certifications. We cooperate with qualified third-party laboratories to ensure product safety, purity, and consistency. Each batch of natural soy isoflavone extract is tested for isoflavone assay, moisture content, heavy metals, solvent residues, pesticide residues, protein content, odor, and microbiological safety, providing reliable B2B bulk supply and OEM solutions for nutraceutical manufacturers.

Factory&Team

Certification

Certification

Package & Shipment

Package & Shipment

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