Effect of phenolic compounds in Lycopersicon esculeutum on the synthesis of ethylene |
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Authors: | Dennis A Wardale |
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Institution: | Agricultural Research Council Food Research Institute, Colney Lane, Norwich NOR 7OF U.K. |
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Abstract: | Caffeic, coumaric, sinapic and ferulic acids and naringenin were found in green tomato fruit, Chlorogenic acid accounted for 75% of the total phenolics in mature green fruit but only 35% in ripe fruit. There was very little change in the phenolic composition of the flesh of the fruit during ripening, whereas in the skin, naringenin increased markedly at the onset of the climacteric and three unidentified compounds increased during the climacteric rise. The increase in the concentration of naringenin was accompanied by an increase in the production of ethylene in the skin. Investigation of three systems producing ethylene from 4-methylmercapto-2-oxobutyric acid in the presence of peroxidase, showed that only p`-coumaric acid or naringenin were capable of acting as phenolic substrates, the other phenolic compounds being inhibitory. |
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Keywords: | Solanaceae tomato ethylene synthesis naringenin cinnamic acids climacteric indolyl-3-acetic acid |
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