V-CERT
Ingredient library

Bone char (sugar refining)

Bone char is charred cattle bone used by some cane refineries to decolorize sugar.

Also on labels: bone black · natural carbon · refined cane sugar

Sugar itself contains no animal ingredients; the question is the refining process. Some cane refineries — mainly in the United States — decolorize sugar through bone char filters made from cattle bone, while others use activated carbon or ion-exchange resins. Beet sugar never uses bone char. Standards vary on process aids, so a review resolves it with a refinery statement rather than assumption.

What it means for each mark

  • VeganDepends on the refinery: bone-char-filtered cane sugar conflicts with strict vegan standards; carbon- or resin-refined cane sugar and beet sugar do not.
  • VegetarianBone char is a slaughter-derived processing aid; standards differ on process-level exclusions, so the refining method is documented during review.

Where it typically hides

  • Refined white cane sugar where the refinery is unspecified
  • Brown sugar made by adding molasses back to refined cane sugar
  • Powdered sugar and syrups milled or blended from refined cane sugar
  • Any product listing plain sugar sourced from multiple refineries

What a certification review asks for

  1. The sugar supplier's refining statement — bone char, activated carbon or ion exchange
  2. The source split between cane and beet sugar
  3. For multi-sourced sugar: a statement per refinery, since supply commonly mixes origins

Alternatives

  • Beet sugar (never bone-char processed)
  • Certified organic cane sugar (bone char is not permitted in US organic processing)
  • Cane sugar from refineries using activated carbon or ion-exchange resins
  • Unrefined and minimally processed cane sugars

Frequently asked questions

Does sugar contain animal ingredients?

No. The concern is the process: some cane refineries filter sugar through bone char to remove color. The finished sugar contains no bone material, but strict vegan standards treat the process as disqualifying.

How can I tell if sugar was bone-char filtered?

Not from the label. It takes a statement from the refinery. Beet sugar and certified organic cane sugar are not processed with bone char, and many refineries now use activated carbon or ion-exchange resins.

Last verified 2026-07-03 · V-Cert Certification Team · standard food-science sources; supplier documentation always governs an individual review.

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