Research Article
Improvement of Analytical Methods for the Determination of
Polyphenolic Bioactive Compounds in Berry Fruits
Table 3
Ellagic acid obtained from the traditional and new rapid procedure (results from 3 independent replicates).
| | Sample | Analyte | Methanolic extract/hydrolysis | Methanolic extract with ultrasound treatment/hydrolysis | Concentration
(mg 100 g−1 FW)a | RSD
(%) | Concentration
(mg 100 g−1 FW)a | RSD
(%) |
| | S1 (S. nigra) | Ellagic acid | n.d. | — | n.d. | — | | S2 (S. nigra) | Ellagic acid | n.d. | — | n.d. | — | | S3 (S. nigra) | Ellagic acid | n.d. | — | n.d. | — |
| | M1 (R. ulmifolius) | Ellagic acid | 81.12 | 7.43 | 119.17 | 6.12 | | M2 (R. ulmifolius) | Ellagic acid | 144.65 | 10.15 | 200.06 | 4.31 | | M3 (R. procerus) | Ellagic acid | 50.40 | 7.27 | 77.40 | 3.15 | | M4 (R. fruticosus) | Ellagic acid | 22.12 | 9.14 | 29.70 | 5.74 |
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RSD: relative standard deviation; amean value; n.d.: not detected.
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