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Changes in activities of cell wall hydrolases during ripening and softening in persimmon fruits


Changes in activities of cell wall hydrolases during ripening and softening in persimmon fruits



Journal of the Korean Society for Horticultural Science 39(1): 55-59



This study was carried out to investigate the activities of cell wall hydrolases during softening in persimmon fruits. Investigated enzymes were alpha-, beta-galactosidase, beta-glucosidase, beta-xylosidase, beta-arabinosidase, alpha-arabinofuranosidase, alpha-mannosidase and polygalacturonase. Activity of polygalacturonase was not detected during ripening and softening of persimmon fruits. Flesh firmness and activities of investigated cell wall hydrolases were not greatly changed from green to mature stages, but their activities greatly increased in soft fruit. Highly active enzymes were alpha-galactosidase, beta-galactosidase and alpha-mannosidase in soft fruit. When ethylene was treated on turning and mature fruits, flesh firmness severely decreased in course of time of ethylene treatment. Activities of cell wall hydrolases greatly increased during ethylene treatment in mature fruits; however, were not greatly different in turning fruits.

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Accession: 003061926

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