Titrimetric Determination of Ascorbic Acid Contents in Plant Samples by 2, 6-Dichlorophenolindophenol Method

摘要

The aim of this study was to investigate the levels of ascorbic acid (vitamin C) in various plant samples, which were available in Iran markets, by redox titration method, using2,6-dichlorophenolindophenol. The obtained data were used for determination of vitamin C amounts at the 95% confidence level (student's t-test). The order of ascorbic acid contents in samples was leaves of parsley, kiwifruit, broccoli, orange, red pepper, lemon, leaves of geranium, lime, leaves of spinach, green pepper, potato, tomato, white part of scallion, leaves of leek, apricot, peach, green part of scallion, white onion, lettuce and leaves of coriander.