Correlation Analysis of Curcuminoids and Color Index L , a and b of Curcumae Longae Rhizoma Powder

To study the relationship between the component content of curcuminoids in Curcumae Longae Rhizoma and powder color indeces L*, a* and b* those were measured by chromaticity instrument, in order to provide scientific basis for quality assessment of Curcuma longa medicinal materials. Detect the conte...

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Bibliographic Details
Published inZhong yao cai Vol. 39; no. 6; p. 1247
Main Authors Yin, Li-li, Xia, Qin, Cai, Xiao-yang, Li, Min
Format Journal Article
LanguageChinese
Published China 01.06.2016
Subjects
Color
Colorimetry
Curcuma
Curcumin - analogs & derivatives
Diarylheptanoids
Powders
Rhizome
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Summary:To study the relationship between the component content of curcuminoids in Curcumae Longae Rhizoma and powder color indeces L*, a* and b* those were measured by chromaticity instrument, in order to provide scientific basis for quality assessment of Curcuma longa medicinal materials. Detect the content of curcumin,demethoxycurcumin,bisdemethoxycurcumin,then detect the content of curcuminoids by the Chinese Pharmacopoeia method. Measure the color indeces L*, a* and b* of Curcumae Longae Rhizoma powder by colorimeter. Finally, the relationship between the content and the color was analyzed by using the Grey Relational Analysis, Pearson correlation coefficient and regression analysis. There was positive correlation between the content of curcuminoids and a*. But there was no definitely relation between the content of curcuminoids and b* or L*. The content of curcuminoids is closely related with the degree of the color red, the higher the content, the red is deeper. a* could be recognized as an important basis of
ISSN:1001-4454