Methods Totally 80 guinea pigs randomly divided into 4 groups i. e. blank group, lithogenic group, prevention by bear bile powder group and UDCA group.

方法将80只豚鼠随机分为4组，分别为空白组、致石组、熊胆粉预防组、熊去氧胆酸(UDCA)预防组。

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A method based on the near infrared (NIR) spectroscopy was established for the authentication of bear bile powder and the quantitative analysis of the proportion in the counterfeits.

建立了一种基于近红外光谱分析技术的方法，对熊胆粉的真伪进行了鉴别，并对掺伪品中熊胆粉的掺入比例进行了定量分析。

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This research contributes to the rapid and undamaged identification of bear bile powder, and also offers reference for the quality identification of other expensive medicinal materials.

研究结果有助于实现熊胆粉的快速、无损鉴别，并为其他贵重药材的质量鉴定提供了借鉴。

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