Locust Bean Gum
The short version
A traditional galactomannan thickener from carob seeds — pairs synergistically with xanthan and carrageenan.
It's widely considered safe at the amounts used in food, so we mark it green. The Safety section below has the details.
Where it comes from
Extracted from the seeds of the carob tree (Ceratonia siliqua), native to the Mediterranean. Used since antiquity as food and fiber; the historically consistent seed weight inspired the carat measure for gemstones.
How it's used
Used in ice cream, cream cheese, salad dressings, and gluten-free baked goods. Combined with xanthan gum (E415) or carrageenan (E407) for synergistic gelling at low total levels. Improves freeze-thaw stability in dairy.
Safety profile
No ADI specified. Generally well tolerated. Like other galactomannan fibers, high doses may cause flatulence or bloating. No established allergenicity outside rare case reports.
Physical & chemical properties
Off-white powder, dispersible in cold water and fully hydrated in hot water above 80°C. Forms viscous, neutral-flavored solutions. Galactomannan structure (~1:4 ratio of galactose to mannose).
Regulation worldwide
Permitted globally without restrictive limits for food use.
Educational information only. Not medical or dietary advice.