Evaluation of the Crude Drugs by means of Colorimeter. Part 5. : Correlation between the Color and Curcumin Content of Turmeric

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概要

• 論文の詳細を見る

• We examined the correlation between the curcumin content and the color indices, L^* a^* b^*, of 27 turmeric powder samples or their ethanol extracts by using a colorimeter. The results showed that there was not an adequate correlation between curcumin content and the color indices of the powder or ethanol extract of turmeric samples, although it has been generally believed that deep yellow or somewhat reddish turmeric contains much curcumin and is good quality. On the other hand, high correlation was recognized between curcumin content and a* value, that is correlated with red color, of the ethanol extract adjusted to alkaline pH.

• 日本生薬学会の論文
• 2003-12-20

著者

• KAKIUCHI Nobuko

  Graduate School of Natural Science and Technology, Kanazawa University

• KAWAHARA Kazuhito

  Osaka College of Medical Technology

• Matsuo Ai

  Faculty Of Pharmaceutical Sciences Kanazawa University

• Kakiuchi Nobuko

  Faculty Of Pharmaceutical Sciences Osaka University

• Mikage Masayuki

  Faculty Of Pharmaceuical Sciences Kanazawa University

• Kakiuchi N

  Graduate School Of Natural Science And Technology Kanazawa University

• Mikage M

  Kanazawa Univ.

• Yoshimitsu Michiyo

  Faculty Of Pharmaceutical Sciences Kanazawa University

• Kakiuchi Nobuko

  Graduate School Of Natural Sci. And Technol. Kanazawa Univ.

• Mikage Masayuki

  富山医科薬科大学和漢薬研究所

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