Phenolic metabolism in root slices of selected carrot cultivars |
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Authors: | Maria Leja Anna Mareczek Renata Wojciechowska Stanis?aw Ro?ek |
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Institution: | (1) Department of Plant Physiology, Faculty of Horticulture, Agricultural University, 29 Listopada 54, 31-425 Kraków, Poland |
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Abstract: | Carrot root slices, stored for 4 days at 20 °C reacted with a strong accumulation of total phenols, especially chlorogenic
acid. A significant accumulation of isocoumarin content within the peel was observed in stored slices. Synthesis of phenols
was accompanied by an increase in phenylalanine ammonia lyase activity, wound induced respiration and ethylene production.
The great variability among the studied four cultivars was found concerning isocoumarin synthesis, PAL activity, respiration
rate and ethylene evolution, but less distinct in the case of chlorogenic acid accumulation.
The carrot slices obtained from freshly harvested roots were more sensitive to mechanical damage and short-term storage than
those prepared from roots previously stored. |
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Keywords: | carrot ethylene mechanical damage PAL phenol compounds storage |
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