Gum guaicum

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Gum guaicum
Other names
Guaiac resin; Gum guaiac
ECHA InfoCard 100.029.566
EC Number
  • 232-535-2
E number E314 (antioxidants, ...)
Melting point 85–90 °C (185–194 °F; 358–363 K)[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Gum guaicum, or guaiac resin,[2] is a substance produced from the tree species Guaiacum officinale. It is registered as food additive: as a preservative under the E number E241, and as an antioxidant under E314.[3]

Guaiac resin is also used medically for the stool guaiac test.

Chemically, it is mixture of approximately 70% alpha- and beta-guaiaconic acids, 10% guaiaretic acid, 15% guaiac beta-resin, and small quantities of other chemical compounds such as guaiac yellow and vanillin.[2]


  1. ^ "Guaiac gum".
  2. ^ a b "Guaiac Resin" (PDF). Food and Agriculture Organization of the United Nations. 2006.
  3. ^ [1]