Specification :: Bio-Quercetin

Specification No. I 32

Bio-Quercetin^®

(50% isoquercitrin, bioavailable form of quercetin) – bulk

Description: Purified powdered extract from the seeds and pods of the Brazilian shrub “fava d´anta” (Dimorphandra mollis), with highly concentrated isoquercitrin, the most bioavailable form of quercetin. The extract is analytically standardized to minimum 50% (w/w) isoquercitrin (quercetin-3-glucoside) and contains also 25-45% (w/w) rutin (quercetin-3-rhamnoglucoside).

Macroscopic characters:
Color:	yellow, yellow-brown or yellow-green
Taste:	slightly bitter-sweet
Solubility:	partially soluble in water, soluble in alcohols

Tests:	Limits:	Methods:
Appearance:	yellow powder
Loss on drying (120 °C):	max. 7.0 %	Ph. Eur. 5^th Ed., <2.2. 32>
Heavy metals:	max. 0.002 %	Ph. Eur. 5^th Ed., <2.4.8>
Ethanol (GC):	max. 5000 ppm	NQ I 32, Ph.Eur 5^th Ed. 2005, <2.2.28>
Ethylacetate (GC):	max. 2500 ppm	NQ I 32
Isoquercitrin (HPLC, external standard as isoquercitrin, calcul. on a dry matter)	min. 500 mg/g	NQ I 32, test No. 3 Ph.Eur 5^th Ed. 2005, <2.2.29>
Rutin (HPLC, external standard as rutin, calculated on a dry matter):	250 - 450 mg/g	NQ I 32, test No. 6 Ph.Eur 5^th Ed. 2005, <2.2.29>
Microbiological test:
Total aerobic microbial count:	<10 000 cfu/g	Ph.Eur 5^th Ed. 2005, <2.6.12>
Combined yeast and molds count:	<100 cfu/g	Ph.Eur 5^th Ed. 2005, <2.6.12>
Escherichia coli in 1 g	absent	Ph.Eur 5^th Ed. 2005, <2.6.12>
Salmonella in 10 g:	absent	Ph.Eur 5^th Ed. 2005, <2.6.12>
Staphylococcus aureus in 1 g:	absent	Ph.Eur 5^thh Ed. 2005, <2.6.12>
Storage conditions: Keep in dark, up to 25°C
Shelf life: 2 years

*NQ = Norm of Quality
This specification supersedes the specification No. I 32, version 2, issued on September 5, 2005.

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Bio-Quercetin®

Bio-Quercetin^®