Gum tragacanth (from several shrub species in the genus Astragalus) is used as a coating and binding agent in pill manufacture, as an emulsifier in processed foods, and as a thickener in sauces.

西黄蓍胶(来自几种黄属植物)，用作缓和药及丸药的黏合剂﹔在食品加工中用作乳化剂，在酱汁中用作增稠剂。