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Updated: Jul 24, 2026
Experimental Protocol for Detecting Cyanobacteria in Liquid and Solid Samples with an Antibody Microarray Chip
Published on: February 7, 2017
A rapid and sensitive method for the analysis of cyanophycin
N A Erickson1, N H Kolodny, M M Allen
1Department of Biological Sciences, Wellesley College, Wellesley, MA 02481, USA.
Abstract:
A method has been devised for the quantitative analysis of cyanophycin, based on (1)H nuclear magnetic resonance (NMR) spectroscopy, allowing determination of the nitrogen status of cyanobacteria. Cyanophycin is extracted with minimal washing from small volumes of cells and quantified by integration of the NMR peak attributed to the protons attached to the delta-carbon of arginine. Linear relationships were found between the amount of cyanophycin determined by this method and both known concentrations of cyanophycin solutions and the amount of cyanophycin determined using the standard chemical arginine assay.
