Routine Sample Preparation and HPLC Analysis for Ascorbic Acid (Vitamin C) Determination in Wheat Plants and Arabidopsis Leaf Tissues
Plants have developed various mechanisms to protect themselves against oxidative stress. One of the most important non-enzymatic antioxidants is ascorbic acid. There is thus a need for a rapid, sensitive method for the analysis of the reduced and oxidised forms of ascorbic acid in crop plants. In this paper a simple, economic, selective, precise and stable HPLC method is presented for the detection of ascorbate in plant tissue. The sensitivity, the short retention time and the simple isocratic elution mean that the method is suitable for the routine quantification of ascorbate in a high daily sample number. The method has been found to be better than previously reported methods, because of the use of an economical, readily available mobile phase, UV detection and the lack of complicated extraction procedures. The method has been tested on Arabidopsis plants with different ascorbate levels and on wheat plants during Cd stress.
KeywordsAscorbic acid HPLC analysis plant tissue stress UV detection
ascorbic acid, reduced form
dehydroascorbic acid, oxidised form
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