Comparing E392 - Extracts of rosemary vs E306 - Tocopherol-rich extract
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Interest over time for 3 keywords in U.S. during the last 10 years.
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Popular questions
Can dogs have rosemary extract?
Yes—small amounts of rosemary extract (E392) used as a food preservative are generally safe for dogs; avoid giving concentrated essential oils and stop if stomach upset occurs.
Can dogs eat rosemary extract?
It’s commonly used in dog foods as a natural antioxidant and is considered safe at low levels, but consult your vet if your dog is prone to seizures or is pregnant/lactating.
Can cats have rosemary extract?
In the tiny amounts used as a preservative, rosemary extract is generally considered safe for cats; do not use rosemary essential oil, as cats are very sensitive to concentrated oils.
How to extract rosemary oil?
Rosemary essential oil is typically obtained by steam distillation of the herb, producing a highly concentrated oil that is not the same as E392 and isn’t intended for ingestion without expert guidance.
How to make rosemary extract?
Commercial E392 is made by extracting rosemary with food‑grade solvents (e.g., ethanol), then purifying and standardizing carnosic acid/carnosol levels; at home you can approximate it by steeping dried rosemary in high‑proof food‑grade alcohol and filtering, though it won’t be standardized.
Are tocopherols bad for you?
No—tocopherols (E306, natural vitamin E) are considered safe at permitted food-use levels; issues mainly arise with excessive supplement doses, which can increase bleeding risk or cause mild stomach upset.
Are tocopherols safe for dogs?
Yes—mixed tocopherols are commonly used as natural preservatives in dog foods and are considered safe at those levels; avoid high-dose vitamin E supplements for pets unless advised by a veterinarian.
What are tocopherols in food?
They are vitamin E compounds (E306) extracted from vegetable oils, added as antioxidants to slow oxidation and rancidity, especially in fatty foods.
What is tocopherols in food?
In foods, “tocopherols” (E306) refers to a vitamin E–rich extract used as an antioxidant to stabilize oils and preserve flavor.
Are tocopherols safe?
Yes—E306 is generally considered safe at normal food levels (authorized in the EU and GRAS in the U.S.); risks mainly come from very high supplemental intakes.