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Analysis Of Free Sugars And Chlorophyll In Spinach From A Local Retail Market, Harvey J. Drews
Analysis Of Free Sugars And Chlorophyll In Spinach From A Local Retail Market, Harvey J. Drews
Masters Theses
The accuracy (percentage recovery) and precision (coefficient of variation or CV) of extraction and an anion-exchange HPLC method using amperometric detection for measurement of free sugars in spinach were determined. Five samples of fresh spinach leaves were extracted and analyzed by the HPLC method for glucose, fructose and sucrose. Different amounts (0.093 to 0.453% of spinach, wet basis or WB) of each of the latter sugars were added to each of five spinach samples and these spiked samples were analyzed in a similar manner as the unspiked samples. The average percentage recoveries of glucose, fructose and sucrose were respectively, 106.6, …