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[A histochemical study on baicalin].

X Du1, B Li, Y Pan

  • 1Pharmacy College, Heilongjiang University of TCM, Harbin 150040.

Zhongguo Zhong Yao Za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica
|October 13, 2001
PubMed
Summary
This summary is machine-generated.

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This study analyzed baicalin content in Scutellaria baicalensis roots using TLC and HPLC. Root quality is linked to thin phellem, a high phloem to xylem ratio, and no central decay.

Area of Science:

  • Phytochemistry
  • Histochemistry
  • Analytical Chemistry

Context:

  • Scutellaria baicalensis (Huang-Qin) is a traditional Chinese herb.
  • Baicalin is a major active compound in Scutellaria baicalensis.
  • Understanding baicalin distribution is crucial for quality control.

Purpose:

  • To histochemically analyze baicalin distribution in Scutellaria baicalensis roots.
  • To quantify baicalin content in different root tissues using TLC and HPLC.
  • To establish quality indicators for Scutellaria baicalensis root based on baicalin content.

Summary:

  • Baicalin content varied significantly across root tissues: phloem (11.08%), xylem (7.86%), phellem (2.19%), and decayed core (0.815%).
  • Thin phellem, a high phloem-to-xylem ratio, and the absence of a decayed central part were identified as indicators of high-quality Scutellaria baicalensis root.

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  • Thin-layer chromatography (TLC) and high-performance liquid chromatography (HPLC) were employed for precise quantification.

    • Impact:

    • Provides objective criteria for assessing Scutellaria baicalensis root quality.
    • Supports standardization of herbal medicines derived from Scutellaria baicalensis.
    • Contributes to understanding the biosynthesis and accumulation of baicalin in plants.