Achyranthes aspera Extract 10–30% Saponins

Roots of Achyranthes aspera, the rough chaff flower called apamarga in Ayurvedic practice, supply this extract, which does not draw on the root of Achyranthes bidentata sold as niu xi in Chinese trade. Ethanol extraction concentrates the triterpenoid saponins of the root, and the liquor is dried to a light brown, water-soluble powder.

The primary grade is 30% saponins by UV, with 10% as the lower end of the range. The powder is 80 mesh. The 30% grade serves capsules and drink sticks with a small fill, while the 10% grade suits tea-style blends and dry compounds that keep more of the root matrix.

SKU: BOT-STX-0088 Category: Standardized Extracts Tags: Dry Blends & Premixes, Ethanol Extracted, Root & Rhizome, Saponins, Standardized Extracts, Water Soluble

Saponin Standardization & Grades

The saponins of Achyranthes aspera root are triterpenoid glycosides, built mainly on oleanolic acid with sugar chains attached to the ring system. They are the standardization target because they define the foaming, bitter-sweet character of the root and because a colorimetric assay reads the class as a whole. The botanical entity is Achyranthes aspera L., and the part used is the root, which the master data groups with roots and rhizomes.

Grade	Assay & Method	Where It Fits
10% Saponins	UV	Tea blends and dry compounds
30% Saponins	UV	Capsules and drink sticks with small fill

The choice of grade depends on dose, fill weight and how much root matrix the formula can tolerate. The 30% grade holds three times the saponin load per gram of the 10% grade, so a capsule reaches its target with a smaller fill. The 10% grade keeps more of the betaine, sugars and ecdysteroids of the root and gives a sweeter, stickier powder. The unstandardized sibling is the Achyranthes Aspera Extract Powder, made from the same root with no saponin figure.

The name achyranthes covers two commercial plants. Achyranthes bidentata is the source of niu xi in traditional Chinese drugs, and Achyranthes aspera is the Indian species used in Ayurveda, with a different saponin and ecdysteroid profile. Buyers who compare quotes should confirm the species and the root as the stated part, since the whole herb of the aspera species is also traded.

A UV saponin figure is a class estimate. It is useful for dose planning and for comparing lots from the same method, but it cannot be compared with HPLC values for single oleanolic acid glycosides or with gravimetric totals from other methods.

Saponin Analysis & Purity Risks

Both grades are measured by UV, a colorimetric method in which the saponins react with an acid reagent and the color developed is read at a fixed wavelength against a reference saponin or sapogenin. The result is a summed value, and the choice of reference standard changes the number. An HPLC profile of individual saponins is a different measurement and cannot be converted into the UV figure.

Colorimetric saponin assays react with other compounds as well. Sugars give color with strong acid, and sterols respond to the same reagents, so a root extract with a high sugar content can read higher than its true saponin level. A well-run method removes the sugars first by partitioning the saponins into an organic solvent, which is why the lower grade is the one most affected by the choice of cleanup.

The root fingerprint of the aspera species also includes betaine, a quaternary ammonium compound that gives a sweet taste and attracts water, and ecdysterone, a polyhydroxylated steroid. They are not counted in the saponin figure but contribute to the hygroscopic behavior and to the taste of the extract.

Purity risks follow from the botany. Roots of Achyranthes bidentata are traded in far larger volume and may be offered under the generic name achyranthes, and the aerial parts of Achyranthes aspera contain different proportions of the same compound families. A species statement, the root as the stated part and a stable chromatographic profile protect identity better than a percentage alone.

Typical Specifications

Specification Item	Product Information
Latin Name	Achyranthes aspera
Plant Part	Root & Rhizome
Processing	Ethanol Extraction
Compound Class	Saponins
Common Name	Achyranthes, Rough Chaff Flower, Apamarga
Ingredient Type	Standardized Extract
Marker Compound(s)	Saponins (triterpenoid glycosides of Achyranthes aspera root)
Primary Grade	30% Saponins (UV)
Available Grades	10% · 30% Saponins (UV)
Appearance	Light Brown powder
Solubility / Dispersibility	Water Soluble
Quality Parameters
Moisture (LOD)	≤5.0%
Total Ash	≤5.0%
Particle Size	80 mesh
Heavy Metals	Lead ≤2 ppm · Arsenic ≤1 ppm · Cadmium ≤1 ppm · Mercury ≤0.1 ppm
Microbiology	TPC ≤1,000 cfu/g · Yeast & Mold ≤100 cfu/g · E. coli Negative · Salmonella Negative/25 g
Shelf Life	24 months in unopened original packaging, cool and dry storage

Applications by Grade

30% Grade for Compact Capsules

The 30% grade supplies a saponin target in a small capsule fill. The light brown powder is hygroscopic because of its betaine and sugar content, so a dry filling room and a flow agent keep the hopper feeding evenly, and fill weights should be checked at the start of each run.

30% Grade in Drink Sticks

Because the powder is water soluble, the high grade dissolves in one stir into a lightly foaming tan solution. Saponins foam when shaken, so recommend gentle stirring, and add citrus or ginger flavors to cover the slightly bitter, sweetish root note.

10% Grade for Herbal Tea Blends

At 10% the extract is dosed by weight in herbal tea mixes, where its root-like sweetness and mild bitterness blend with licorice, ginger or cinnamon. Mix in small dry lots, because the sticky powder lumps against dry leaf and settles to the bottom of a blend.

10% Grade for Dry Herbal Compounds

Dry compounds use the lower grade beside other root powders. Pre-mix it with a bulking agent and screen the blend before filling, since the betaine in the extract draws moisture from the air and produces hard lumps that are difficult to break down.

30% Grade in Tablet Blends

Tablets of the high grade need a dry binder and a moisture-protective film coat, because the hygroscopic powder softens compacts. Run a compression trial on the full blend and check hardness after storage, using packs with a desiccant for a humid market.

Technical & Quality Considerations

The extract is a light brown powder with a faint earthy odor and a mildly sweet, bitter taste. It is water soluble, so it forms a clear to slightly hazy tan solution that foams when shaken, because the saponins lower surface tension. The foam is stable and slow to collapse, which affects filling lines and shaker bottles.

Triterpenoid saponins are chemically stable at neutral pH and in dry form, but strong acid cleaves the sugar chains and strong alkali can hydrolyze ester-linked sugars, which changes the foaming and the chromatogram. Betaine and sugars make the powder hygroscopic, so keep the drum closed and open it only briefly. At production scale, screen the Achyranthes aspera extract before dosing and pre-mix it with a portion of the carrier.

For liquid formats, test an anti-foam strategy early, because saponin foam complicates filling, and filter the solution to remove the small insoluble fraction. Compare each lot with a retained sample for color, odor and flow, record the date the drum was opened and use older lots first to limit moisture-related caking.

An Achyranthes aspera extract is checked by foam height and stability, since the saponin content shows in how a shaken solution behaves. A weak, quickly collapsing foam suggests a low saponin lot, and a very sticky powder suggests a high sugar load. Keep a retained sample of each Achyranthes aspera extract lot, and record its foam test so that later lots can be compared with it.

Packaging & Commercial Supply

Essencefield supports product evaluation, formulation trials, commercial orders, and ongoing ingredient supply. Packaging, storage, and shipping arrangements are determined by product characteristics, order quantity, stability requirements, and destination-market needs.

Supply Item	General Information
Sample	Available upon request for formulation, testing, and supplier evaluation
Order Quantities	100 g · 1 kg · 5 kg · 25 kg · 100 kg · 500 kg · Bulk
Sample Lead Time	Typically 5–7 days after sample confirmation
Production Lead Time	Typically 15–30 days after order and specification confirmation
Packaging	Suitable protective inner packaging with bags, cartons, drums, or other appropriate outer packaging
Storage	Store in tightly sealed, suitable protective packaging in a cool, dry environment. Protect from moisture, heat, and direct sunlight. Specific storage conditions follow the approved product specification.
Documentation	COA · Product Specification · TDS · SDS · Applicable declarations (as applicable)

Final order quantities, lead times, packaging, documentation, and shipping arrangements are confirmed according to the selected product and commercial requirements.