Rhubarb Root Extract Powder

Name: Rhubarb Root Extract Powder | 10:1 & Anthraquinones
SKU: BOT-BEX-0082

Rhubarb Root Extract Powder is a concentrated botanical ingredient derived from the root of Rheum palmatum L., a species in the Polygonaceae family. The material is supplied as a dry extract for botanical formulation and ingredient sourcing, with commercial grades differentiated either by extract ratio or by defined phytochemical content.

Commercial options include ratio extracts led by the 10:1 grade and HPLC-standardized extracts containing 5% or 10% total anthraquinones. Additional ratio specifications include 4:1, 5:1, and 20:1. These botanical extracts are distinct from purified individual anthraquinones, which require separate purity and analytical specifications.

SKU: BOT-BEX-0082 Categories: Botanical Extracts, Root & Rhizome Extracts Tags: Anthraquinones, Polyphenols, Quinones, Rheum spp., Rhubarb Root, Root

Ingredient Profile & Common Uses

Rheum palmatum L., commonly known as Chinese rhubarb, provides the botanical raw material used for this extract. The root is processed into a concentrated powder rather than simply milled as whole botanical material. This distinction separates Rhubarb Root Extract from rhubarb root powder and from purified phytochemicals such as high-purity emodin.

Commercial grades follow two different specification systems. Ratio grades describe the concentration relationship between starting botanical material and finished extract, while standardized grades define a measurable phytochemical target. These specifications answer different procurement questions and should not be treated as equivalent measures of concentration.

The extract is used in botanical supplements, traditional herbal ingredient systems, and multi-component dry formulations. Its naturally occurring constituents contribute a pronounced botanical color and bitter-to-astringent sensory character. Formulators should consider blend uniformity, flavor contribution, and the selected analytical grade when developing finished products.

Application Areas

Botanical Dietary Supplements

Used in concentrated botanical supplements where Rheum palmatum identity, botanical concentration, or a defined anthraquinone assay forms part of the ingredient specification.

Capsules and Tablets

Suitable for solid-dose formulations where powder flow, blend homogeneity, capsule filling, and compression performance are evaluated during development and scale-up.

Multi-Botanical Formulations

Used in complex botanical blends that require a concentrated rhubarb ingredient with a defined ratio or analytical profile rather than directly milled root powder.

Standardized Botanical Products

The 5% and 10% assay grades support formulations requiring a quantitative phytochemical specification in addition to botanical identity and extract form.

Typical Specifications

Specification Item	Commercial Information
Product Name	Rhubarb Root Extract Powder
Botanical Name	Rheum palmatum L.
Botanical Family	Polygonaceae
Common Name	Chinese Rhubarb
Plant Part	Root
Ingredient Type	Botanical ratio extract / standardized botanical extract
Product Form	Powder
CAS Number	90106-27-7
Ratio Extract Grades	4:1 · 5:1 · 10:1 · 20:1
Primary Ratio Grade	10:1
Standardized Grades	5% · 10% Total Anthraquinones
Primary Standardized Grade	10% Total Anthraquinones
Standardized Assay Method	HPLC
Ratio Extract Identification	TLC
Principal Constituent Class	Anthraquinone / hydroxyanthracene derivatives
Characteristic Constituents	Rhein · Emodin · Aloe-emodin · Chrysophanol · Physcion

Key Constituents & Extract Profile

The phytochemical profile of Rheum palmatum includes rhein, emodin, aloe-emodin, chrysophanol, physcion, and related glycosides. These compounds occur within a complex botanical matrix rather than as a single isolated active, making the extract chemically different from purified anthraquinone ingredients.

An extract ratio describes the relationship between the quantity of starting botanical material and the resulting extract. It does not indicate a fixed percentage of emodin or total anthraquinones. For this reason, ratio grades are most useful when botanical concentration is the primary sourcing criterion.

HPLC-standardized grades add a defined quantitative assay to the botanical identity. A 5% or 10% total anthraquinone specification therefore provides a different level of analytical control from a ratio extract and is more suitable for projects that require a measurable marker profile.

Technical & Quality Considerations

Botanical identity and grade definition are the main analytical priorities. Procurement documentation should identify Rheum palmatum and the root as the source material. TLC is commonly used for identity evaluation of conventional ratio extracts, while HPLC is appropriate when the specification includes a quantitative anthraquinone assay. Analytical documentation should also distinguish total-anthraquinone measurements from assays for an individual compound.

Physical behavior should be evaluated for the specific commercial grade rather than inferred from the extract ratio alone. Rhubarb extract can contribute noticeable color and a bitter-to-astringent sensory profile, while wetting, dispersibility, and sedimentation may change with extraction conditions and phytochemical concentration. These characteristics are particularly relevant when the ingredient is introduced into powders, suspensions, or other multi-component systems.

During scale-up, formulators should evaluate blend uniformity, premixing, capsule filling, tablet compression, and sensory impact in the actual formulation. Lower-inclusion assay grades may require more controlled premixing to achieve even distribution. R&D teams should determine early whether the project requires a ratio extract, an HPLC-defined botanical extract, or a purified phytochemical so that sourcing and analytical criteria remain aligned.

Packaging & Commercial Supply

Essencefield supports samples, development quantities, commercial orders, and repeat ingredient supply for product evaluation, formulation, and ongoing sourcing. Packaging, storage, and shipping conditions are selected according to ingredient characteristics, order quantity, stability requirements, and destination-market needs.

Supply Item	General Information
Sample	Available for formulation, testing, and supplier evaluation
Order Quantities	Sample · 100 g · 1 kg · 5 kg · 25 kg · 100 kg · 500 kg · Bulk
Sample Lead Time	5–7 days
Production Lead Time	15–30 days
Packaging	Sealed food-grade or suitable protective inner packaging with drum, carton, bag, or other appropriate outer packaging
Storage	According to the approved product specification and ingredient stability requirements
Documentation	COA · Product Specification · TDS · SDS · Applicable declarations

Available quantities, packaging format, net weight, storage conditions, analytical requirements, documentation, and shipping arrangements are confirmed according to the selected ingredient and commercial order.