Development of a measuring method of DPPH on paper to analyze the sensitivity of antioxidant in accorbic acid, gallic acid standards and EGCG, a good analysis. Have the ability to do good and low limit of detection (ascorbic acid = μ M, gallic acid 13.15 = 5.70 M and μ = 1.21 EGCG? Μ M) using a sample and reagent volume the total volume 8 L μ can be analyzed simultaneously, one at a time, multiple samples (> 20 samples at a time). Use the paper that devices are cheap in analyzing and using the scanner in combination with image processing program is measuring the signal system. To make the analysis possible in a place where there are no tools in the laboratory. The devices are likely to be able to measure vitamin c antioxidant compounds in a sample of interest as well in the future. To help promote the development of studies on vitamin c antioxidant in foods and herbs to progress quickly.
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