The Use of Kaolin as a Coloring Agent for the Identification of Crude Drugs

Sung-Joon KIM; Haruki YAMADA

doi:10.3937/kampomed.50.29

Kampo Medicine

Online ISSN : 1882-756X
Print ISSN : 0287-4857
ISSN-L : 0287-4857

The Use of Kaolin as a Coloring Agent for the Identification of Crude Drugs

Sung-Joon KIM, Haruki YAMADA

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Keywords: kaolin, crude drugs, coloration

JOURNAL FREE ACCESS

1999 Volume 50 Issue 1 Pages 29-35

DOI https://doi.org/10.3937/kampomed.50.29

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Abstract

Kaolin was tested on 180 crude drugs for use as a coloring agent. Eight crude drugs—Atractylodis Rhizoma, Atractylodis Lanceae Rhizoma, Magnoliae Cortex, Asiasari Radix, Pogostemi Herba, Linderae Radix, Citri Leiocarpae Exocarpium and Caryophylli Flos-exhibited coloration. The present results indicate that kaolin can be added as a colorant to crude drugs as a simple method for the distinguishing and identifying the crude drugs in the Kampo pharmacy.

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