Tragacanthus chịngọm (Tragacanth, Gummi Tragacanthae, tragacanthus, E413) - stabilizer; chịngọm mịrị amị na-asọpụta site na mbepụ nke ị ga na alaka nke osisi ogwu astragalus tragacanthus.
Isi mmalite nke chịngọm azụmahịa bụ ụdị 12-15. Ebe owuwe ihe ubi ọdịnala bụ ugwu etiti ndịda ọwụwa anyanwụ Turkey, Northwwest na Southern Iran. N'oge gara aga, a na-ewe ihe ubi na mba ndị dị na Transcaucasia na na Turkmenistan (Kopetdag). A na-anakọta ma ọpụpụ sitere n'okike na mpụta nke sitere na mbepụ pụrụ iche.
Enwere ụdị tragacanthus chịngọm abụọ n'ahịa Europe: tragacanthus Persian (ọtụtụ mgbe) na tragacanthus Anatolian. N'ókè Pakistan, India na Afghanistan, a na-enweta chịngọm a maara dị ka chitral gum.
A na-eji tragacanthum chịngọm na-emepụta ọgwụ maka nkwadebe nke nkwusioru, dịka ntọala maka mbadamba nkume na ọgwụ. A na-ejikwa ya na nkwadebe nke mastic confectionery maka ike nke oke.