Locust bean gum (also known as carob gum, carob bean gum, carobin, E410) is a galactomannan vegetable gum extracted from the seeds of the Carob tree. It is used as a thickening agent and gelling agent in food technology. It is soluble in hot water.^[1]

Locust Bean Gum occurs as a white to yellow-white powder. It consists chiefly of high molecular weight hydrocolloidal polysaccharide, composed of galactose and mannose units combined through glycosidic linkages, which may be described chemically as galactomannan. It is dispersible in either hot or cold water, forming a sol having a pH between 5.4 and 7.0, which may be converted to a gel by the addition of small amounts of sodium borate. Its main function is as a stabilizer and thickener.

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