AN1003: Determination of Trace Sodium in Cranberry Powder

Instrument Type: IC

Cranberry powder contains organic acids, proanthocyanidins, and polyphenols. Organic acids in cranberries impart flavors and their specific ratios can be used to detect adulteration. Although inductively coupled plasma-optical emission spectroscopy (ICP-OES) is the most common approach for determining nutritional elements in cranberry powder, ion chromatography (IC) is a feasible alternate approach. In addition to determining sodium in cranberry powder, IC can also be used to determine other important components that cannot be determined by ICP-OES (e.g., organic acids).

AB112: Determination of Organic Acids in Cranberry and Bilberry Extracts

Instrument Type: IC

This application demonstrates the determination of quinic, malic, and citric acids in cranberry and bilberry extracts using a Thermo Scientific Dionex IonPac AS11-HC column with suppressed conductivity detection.

AN143: Determination of Organic Acids in Fruit Juices

Instrument Type: IC

This application note shows how organic acids can be determined in fruit juices at low to high mg/L concentrations using a simple dilution, an IonPac AS11-HC, electrolytically generated eluent gradients, and suppressed conductivity detection. The fruit juices analyzed in this application note are orange, grape, apple, and cranberry.