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[A new medicinal plant Pterocapus indicus].

S Wang1, S Ding, X Zhang

  • 1Tropical Horticultural Research Institute, CATAS, Danzhou 571737.

Zhong Yao Cai = Zhongyaocai = Journal of Chinese Medicinal Materials
|July 1, 1997
PubMed
Summary

The red crystal from Pterocarpus indicus bark sap, used medicinally for 70 years in China, is a macromolecular compound. Analysis reveals its structure as tannic condensation and glucoside, explaining its astringent properties.

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Area of Science:

  • Phytochemistry
  • Materials Science
  • Pharmacognosy

Context:

  • Pterocarpus indicus Willd. has been cultivated in China for 70 years.
  • The red sap from P. indicus bark forms a crystal upon air exposure.
  • This red crystal has traditional medicinal applications as an astringent.

Purpose:

  • To analyze the physicochemical properties, elemental composition, and amino acid profile of the P. indicus red crystal.
  • To determine the structural characteristics of the red crystal.
  • To provide a scientific basis for the traditional uses of P. indicus red crystal.

Summary:

  • The red crystal derived from Pterocarpus indicus Willd. sap was subjected to comprehensive analysis.
  • Physicochemical properties, elemental composition, and amino acids were determined.

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  • Structural analysis identified the crystal as a macromolecular compound composed of tannic condensation and glucoside.

    • Impact:

    • Provides detailed characterization of a traditional medicinal substance.
    • Contributes to understanding the chemical basis of astringent and other medicinal properties.
    • Offers insights into the material science of natural macromolecular compounds.