黄色或棕黄色粉末。Mixture of sodium cholate and sodium deoxycholiate unfractionated As specifically formulated for use in MacConkey Agar,SS Agar and Violet Red Bile Agar.It inhibits Gram-positive bacteria growth while allowing the growth of Gram-negative bacteria.Prepared from bile by acid precipitation,neutralization,clarification,evaporation and crystallization.