Determination of catechin and epicatechin in the peel of apple varieties resistant and non-resistant to apple scab |
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Authors: | Marek Gołębiowski Edmund Maliński Małgorzata Szankin Mariusz Marszeniuk Monika Paszkiewicz Piotr Stepnowski |
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Institution: | (1) Department of Food Science and Institute of Comparative and Environmental Toxicology, Cornell University, Ithaca, 14853-7201 New York, USA |
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Abstract: | Catechin and epicatechin were analysed in the peel of six apple cultivars (three resistant and three non-resistant to apple
scab). Two methods of analytical sample preparation following extraction were tested: solid phase extraction and column separation
with Sephadex LH-20 coupled to a differential refractometric detector. Prior to GC and GC-MS analyses, these compounds were
silylized. This permitted co-injection with standards and the comparison of retention values and mass spectra with those recorded
for standards. The content of catechin and epicatechin in apple peel is discussed in relation to the resistance of apple trees
to scab. |
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