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TOTAL ANTHOCYANIDIN
Total Anthocynin assay in Brunswick Laboratories utilize a pH differential method. It is based on the fact that anthocyanin pigments reversibly change color with a change in pH; the colored oxonium form exists at pH 1.0, and the
colorless hemiketal form predominates at pH 4.5. The difference in
the absorbance of the pigments at 520 nm is proportional to the
pigment concentration. Results are expressed on a
cyanidin-3-glucoside basis. Although determination of total anthocyanin pigment is useful in
assessing the quality of food products, it is highly recommended to
be used in conjunction with analyses for individual anthocyanins.
Learn more:
Total Monomeric Anthocyanin Pigment Content of Fruit Juices, Beverages, Natural Colorants, and Wines
