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[Persian Qing Dai: A Bibliographical Study].

D M Yu1

  • 1Institute of Basic Research in clinical Medicine,China Academy of Chinese Medical Science,Beijing 100700 ,China.

Zhonghua Yi Shi Za Zhi (Beijing, China : 1980)
|November 19, 2025
PubMed
Summary
This summary is machine-generated.

Persian Qīng Dài, historically used in dyeing and medicine, is identified as foreign indigo from Indigofera tinctoria. This study clarifies its origin and superior quality compared to native Chinese sources.

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Area of Science:

  • Ethnobotany
  • Pharmacognosy
  • Historical Botany

Background:

  • The term "Persian Qīng Dài" has historical applications in dyeing and traditional medicine.
  • Its precise botanical origin and distinction from native Qīng Dài have been subjects of long-standing debate.

Purpose of the Study:

  • To clarify the botanical origin, provenance, and manufacturing process of Persian Qīng Dài.
  • To compare the quality of indigo derived from Persian Qīng Dài with native Chinese sources.

Main Methods:

  • Collation of historical literature.
  • Analysis of ancient manufacturing methods.
  • Botanical identification and comparison.

Main Results:

  • Persian Qīng Dài originates from Indigofera tinctoria L. (wood-indigo), not mactra clam powder or other sources.
  • Indigo from Indigofera tinctoria is superior to that from Chinese native plants like Baphicacanthus cusia.
  • Historical evidence suggests introduction from India, utilizing a steeping-oxidation process.

Conclusions:

  • Indigofera tinctoria should be recognized as a legitimate botanical source of Qīng Dài in the Chinese Pharmacopoeia.
  • Chinese indigo production could be enhanced by adopting the Indian steeping-oxidation manufacturing process.