Research Article
Determination of Catechin and Epicatechin Content in Chocolates by High-Performance Liquid Chromatography
Table 4
Intra- and interday precision (
).
| Compound | Intraday | Interday | Concentration (g/mL) | Average peak area | % RSD | Concentration (g/mL) | Average peak area | % RSD |
| Catechin | 200 | 1507937 | 0.13 | 200 | 1537115 | 0.20 | 400 | 2924044 | 0.27 | 400 | 2968715 | 0.23 | 600 | 4458083 | 0.33 | 600 | 4444284 | 0.67 |
| Epicatechin | 200 | 1633896 | 0.03 | 200 | 1609962 | 0.08 | 400 | 3065181 | 0.04 | 400 | 3079683 | 0.21 | 600 | 4699541 | 0.21 | 600 | 4617629 | 0.06 |
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