Abstract
The amount of total ellagic acid in the whole dry plant was as follows: Eucalyptus cinerea: 12.0 mg/g; black grapes: 7.0 mg/g; green grapes: 3.5 mg/g. The averages of five, six or seven samples showed a variation of ±2%. The minimum quantity of the ellagic acid which could be detected with this method was 4 ng. The response of the detector was linear over a 10 6 -fold range of concentration. From the results described here, our method offers a fast, simple way of determining ellagic acid
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