isoquercitrin

Found in 76 ingredients across the CompKitchen flavor graph.

Look up another compound — search by name, CAS number, PubChem CID, or FEMA #.

Properties

Odor description: odorless
Odor threshold — in a food matrix: 463 ppb 3 published values · see all 3 with sources
CAS number: 21637-25-2

Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

~ Likely match

FEMA number: 4225
GRAS publication: GRAS 22
FEMA primary name: Isoquercitrin, enzymatically modified

Reported use levels (ppm by food category)

Typical vs maximum reported addition levels in finished food. Use as a regulatory ceiling reference — verify against the current GRAS publication for your product category.

Food category	Typical (ppm)	Maximum (ppm)
beverages (nonalcoholic)	150	200
chewing gum	1500	2000
frozen dairy	150	200
gelatins/ puddings	150	200
soft candy	150	200

Source: FEMA GRAS publications 1-33.

Published thresholds

3 measured values from the literature. Grouped by what was actually measured — a threshold smelled in clean water, tasted in the mouth, or measured in a real food are three different quantities and are not pooled.

In a food matrix

463 ppb

Measured in a real food, where the matrix shifts detection — not a clean-water value.

Threshold	Matrix	Source	Paper
4.5 ppb	water (food: tea)	Literature corpus	34299388, 36540235, 40226889
Flagged: 103× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
463 ppb	water (food: unknown)	Literature corpus	31401911, 35056794, 41613924
465 ppb	water (food: rice)	Literature corpus	40282749

Only values we can attribute are listed. Where a compendium's licence does not permit public attribution its figures are omitted here, so every number on this page traces to a citable source.

Where you'd actually smell it

Odor Activity Value = measured concentration ÷ odor threshold (463.0 ppb, the engine's canonical value — see the 3 published values). OAV ≥ 1 = perceptible.

Food	Concentration (ppb)	OAV	Source
cocoa	110000.0	238 ⚡	—
quince	71550.0	155 ⚡	—
red fruits	15000.0	32.4 ⚡	—
tea	74.0	0.16	—
rice	10.9	0.02	—

Concentrations from PubMed Central Open Access papers (free literature corpus, MIT-style licensed). Copper = OAV ≥ 10 (strongly perceptible). Green = OAV ≥ 1 (perceptible).

Found in

Measured impact first, then profile share

Every ingredient known to contain isoquercitrin. Ingredients with a measured concentration come first, ranked by odour activity; the rest follow by how large a share of that ingredient's profile this molecule is. The figure beside each is how many different compounds that ingredient has in total — not the concentration of isoquercitrin in it. Full concentrations are in the OAV table above.

cocoa

measured · OAV 237.58

484 cmpds

617 cmpds

5 cmpds

95 cmpds