Broccoli Seed Extract · Standardized Glucoraphanin Ingredient
Broccoli Seed Extract 13% Glucoraphanin (GR-13)
GR-13 is a broccoli seed extract powder standardized to contain at least 13.0% glucoraphanin by HPLC. The ingredient is produced from the seeds of Brassica oleracea var. italica and supplied as a light yellow fine powder.
Identificazione degli ingredienti
Broccoli Seed Extract GR-13 at a Glance
GR-13 is identified by its botanical source, seed plant part and standardized glucoraphanin content. The specification sets glucoraphanin at not less than 13.0%, providing a defined assay target for ingredient qualification and batch review.
Standardized Ingredient
Why 13% Glucoraphanin Matters
Standardization defines the glucoraphanin content of the broccoli seed extract rather than relying only on the botanical source or powder weight.
Defined Glucoraphanin Specification
GR-13 is specified to contain not less than 13.0% glucoraphanin. Glucoraphanin content is measured by HPLC, allowing the marker compound to be evaluated against a defined quantitative limit.
The representative batch shown in the current Certificate of Analysis returned a glucoraphanin result of 14.6%.
Ingredient Science
Glucoraphanin vs. Sulforaphane
Glucoraphanin and sulforaphane are related compounds, but they are not interchangeable ingredient specifications. GR-13 is standardized for glucoraphanin.
Glucoraphanin
Glucoraphanin is a glucosinolate naturally associated with broccoli and is the compound quantified in the GR-13 specification.
Sulforaphane
Sulforaphane is an isothiocyanate that can be formed from glucoraphanin through enzymatic conversion involving myrosinase.
Ingredient Evaluation
Broccoli Seed Extract Powder for Oral Formulations
GR-13 is supplied as a fine powder. When evaluating it for a dietary supplement or food formulation, formulators can review the standardized assay together with physical and quality specifications for the intended finished-product format.
Standardized Active Input
The ≥13.0% glucoraphanin specification provides a defined marker-compound target when calculating ingredient input and reviewing raw-material consistency.
Powder Characteristics
The specification describes GR-13 as a light yellow fine powder with bulk density of at least 0.25 g/ml and at least 90% passing 80 mesh.
Formula Qualification
Before commercial use, evaluate the applicable specification, composition and batch documentation against the requirements of your finished oral product and manufacturing process.
Specifiche tecniche
GR-13 Specification & Representative Batch Results
The following data are taken from the representative Certificate of Analysis for batch 202508001.
| Test Item | Specifiche | Representative Batch Result |
|---|---|---|
| Standardization & Physical Properties | ||
| Glucoraphanin | ≥13.0% · HPLC | 14.6% |
| Aspetto | Light Yellow Fine Powder | Complies |
| Odore | Caratteristica | Complies |
| Il gusto | Caratteristica | Complies |
| Densità della massa | ≥0.25 g/ml | 0.29 g/ml |
| Particle Size (80 Mesh) | ≥90% | Complies |
| Perdita all'essiccazione | ≤8,01 TP3T | 4.05% |
| Ash | ≤12.0% | 7.2% |
| Metalli pesanti | ||
| Lead (Pb) | ≤0.5 mg/kg | Negativo |
| Arsenic (As) | ≤1,0 mg/kg | 0.052 mg/kg |
| Mercurio (Hg) | ≤0,1 mg/kg | Negativo |
| Cadmium (Cd) | ≤0.2 mg/kg | Negativo |
| Microbiologia | ||
| Total Plate Count | ≤3,000 cfu/g | 280 cfu/g |
| Yeast | ≤100 cfu/g | <10 cfu/g |
| Mould | ≤100 cfu/g | 5 cfu/g |
| Coliforms | ≤10 cfu/g | <10 cfu/g |
| Escherichia coli | Negativo | Negativo |
| Salmonella | Negative /25g | Negativo |
| S. aureus | Negative /25g | Negativo |
| Pesticide Residues | ||
| Pesticide Residues | Complies with USP-NF <565> | Complies |
Product Qualification
Composition & Quality Review
Ingredient composition and analytical limits should be reviewed together when qualifying GR-13 for a finished-product project.
Declared Composition
The current Certificate of Analysis lists the ingredient composition as broccoli seed extract, maltodextrin and silicon dioxide.
Batch Quality Controls
The representative COA reports analytical limits and results for physical characteristics, heavy metals, microbiology and pesticide residues in addition to the glucoraphanin assay.
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