Shikakai Extract 30–40% Saponins

Shikakai extract is prepared from the dried pods of Acacia concinna, the soap pod climber of the family Fabaceae, traded in South Asia for its foaming fruit. Ethanol extraction concentrates the triterpenoid saponins of the pod, and the concentrate is dried to a light brown powder that dissolves in water.

Total saponins are measured by UV spectrophotometry, with a primary grade of 40% and a lower grade of 30%. The powder is 80 mesh. Both grades suit foaming mixes, surfactant-style systems and capsule fills where a saponin-rich pod extract is specified.

SKU: BOT-STX-0233 Category: Standardized Extracts Tags: Dry Blends & Premixes, Ethanol Extracted, Fruit & Berry, Saponins, Standardized Extracts, Water Soluble

Shikakai Saponin Standardization & Grades

Saponins are glycosides with a triterpenoid core and one or more sugar chains. The pods of shikakai are rich in them, together with tannins, flavonoids and organic acids. The sugar side of the molecule is water-loving and the triterpenoid side is oil-loving, so a solution foams on stirring and holds oil droplets apart. Shikakai extract is standardized to saponins because surface activity follows the saponin load, and because the figure expresses how far the pod has been concentrated.

The botanical entity named in the specification is Acacia concinna, and the part is the pod, which is the fruit. Shikakai is often confused with soapnut, which is a different tree. The pod material is also listed in some botanical databases under a revised genus name, so the name on the lot documents is matched to the master record. The milled pod is available as Shikakai Powder.

The extract is made from pods that are cleaned, crushed and extracted, and the concentrate is filtered to remove fiber and dried. The pod husk and seeds are bulky, fibrous material, and most of it stays behind, which is why the powder is several times richer in saponin than the crushed pod. Seeds inside the pod are low in saponin and are removed where possible.

Grade	Assay & Method	Where It Fits
30% Saponins	UV	Foaming mixes, bulk blends
40% Saponins	UV	Capsule fills, concentrated systems

The two grades are close, and the choice follows foam strength per gram and fill weight. The 40% grade delivers one third more surface activity per gram, so a capsule or a concentrated mix reaches its target with a smaller charge. The 30% grade is somewhat bulkier and darker, and it suits blends in which bulk is not limiting. Both are measured on the same UV basis, so scaling between them is a matter of weight.

Shikakai Saponin Analysis & Purity Risks

A UV assay does not read saponins directly, because the triterpenoid core has little absorbance. The sample is converted to a colored product with a reagent, the absorbance is read, and the result is calculated against a reference saponin. The percentage is an equivalent tied to that reference and cannot be turned into an HPLC figure for individual compounds.

The pods are rich in tannins, and tannins also respond to colorimetric assays. A shikakai extract with high tannin carry-over can read higher than its saponin load, so the sample is cleaned up before the color reaction or the HPLC fingerprint is read alongside. The fingerprint shows the cluster of saponin peaks that identifies the pod.

Purity risks follow from the material class. Soapnut (Sapindus) and soap bark (Quillaja) are other foaming materials, with different saponin structures, and they are sometimes offered under similar names. Literature on shikakai mentions that bark has a higher saponin level than the pod, and the pod is the defined part here, so mixed pod and bark lots are reviewed before extraction.

Dried pods store poorly in damp conditions. They absorb moisture, darken and attract mold, which is why the starting pods are checked for moisture and microbiology before extraction starts.

One further point concerns water. Saponin solutions made from dried pods are slightly acidic, and the pH moves with the tannin content. A hard-water solution of the extract foams less than a soft-water solution, because calcium ions bind the sugar chains and tannins, and the foam height used in routine checks is therefore measured in water of defined hardness.

Typical Specifications

Specification Item	Product Information
Latin Name	Acacia concinna
Plant Part	Fruit & Berry
Processing	Ethanol Extraction
Compound Class	Saponins
Common Name	Shikakai, Soap Pod
Ingredient Type	Standardized Extract
Marker Compound(s)	Total saponins (triterpenoid glycosides)
Primary Grade	40% Saponins (UV)
Available Grades	30% · 40% 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

40% Grade for Capsule Fills

In capsules the 40% grade reaches its saponin target at small fill. The powder is hygroscopic and foams on contact with moisture, so a dry filling room, a flow agent and a check weight at the start of each run keep the hopper from bridging and the fill steady.

30% Grade in Foaming Powder Mixes

The 30% grade gives a foam head to dry mixes at a gram weight that a stick pack or sachet can carry. It dissolves in cold water but has a bitter, astringent edge, so a sweet or fruity flavor base covers the taste.

40% Grade in Concentrated Surfactant Systems

Concentrated liquid systems use the 40% grade as a natural surface-active ingredient. The extract dissolves to a brown solution, and the pH is held near neutral so that the sugar chains of the saponins stay intact over shelf life.

30% Grade for Powder Premixes

Premixes of the 30% grade carry the extract into larger dry blends. Sift it with the bulking ingredient first and mix in two steps, because the fine tannin-rich particles clump and foam heavily if a damp ingredient is added.

40% Grade in Tablet Blends

Tablets of the 40% grade need a dry binder and a lubricant that does not itself foam. A film coat limits moisture pickup, and disintegration is checked after storage because the saponin-rich compact softens in humid air.

30% Grade in Granulated Formats

Granulated formats take the 30% grade after granulation with a binder. Dry compaction is preferred to wet granulation, since water triggers foaming and sticking in the mixer, and the granule is packed with a moisture barrier.

Technical & Quality Considerations

Shikakai extract is a light brown powder with a woody, mildly acidic scent. It is water soluble, and the solution foams strongly when agitated, which complicates pumping, filling and conveying. Foam of this kind slows filling lines, so low-shear mixing, deaeration or a food-compatible antifoam is planned at the dosing step. Hot, strongly acidic media break the sugar chains down slowly, while neutral and mildly acidic liquids leave the glycosides intact.

The pods are acidic and rich in tannin, and the extract carries some of that character. The tannins bind iron, which darkens the powder on contact with carbon steel, and they bind protein, which can cloud a drink that also contains whey or casein. Stainless surfaces, low-iron fillers and a protein-compatibility trial are the usual precautions.

The powder takes up moisture and cakes in humid storage. Sealed liners with desiccant keep it free flowing. Compare each lot with a retained sample for color and foam height, and run a new check weight when the line changes between the two grades, since they differ in bulk.

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.