释义 |
lie·ber·mann-bur·chard reaction \ˈlēbərmənˈbu̇(ə)rˌkärt-\ noun Usage: usually capitalized L&B Etymology: after Karl T. Liebermann died 1914 German chemist and H. Burchard, 19th century German chemist : a test for unsaturated steroids (as cholesterol) and triterpenes based on the formation of a series of colors (as pink to blue to green) with acetic anhydride in the presence of concentrated sulfuric acid |