Chicken bile and the biles of various animals were dried and after IR spectral analyses, different IR spectra can be obtained with the resulting powders.

• 将鸡胆汁与其他动物胆汁阴乾，分别做红外吸收光谱；再将各种不同来源的鸡胆汁阴乾，分别比较其红外吸收光谱。