Changes in pectinmethylesterase (PME) activity caused by ethylene applied at different temparatures |
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| Authors: | Gertman Eitan; Fuchs Yoram |
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| Institution: | Division of Fruit & Vegetable Storage, Institute for Technology and Storage of Agricultural Products, Agricultural Research Organization, Volcani Center Bet Dagan, Israel |
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| Abstract: | At 25?C the activity of pectinmethylesterase (PME) solutionincubated in ethylene atmosphere (100 µl/liter) was lowerthan that of PME solution incubated in air. On the other hand,at 6?C the activity of the ethylene-incubated PME was higherthan that of the air-incubated solution. The effects of bothtemparature and ethylene on PME-solution activity are reversiblephenomena. Ethylene accelerated both softening was acceleratedas PME activity in avocado fruit at 25?C. However at 6?C softeningwas accelerated as PME activity was promoted by ehtylene treatment.Ethylene had similar effects on PME activity in both purifiedenzyme solution and in vivo systems. (Received ; ) |
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