Publication: Soluble Proteins and Polyphenoloxidase Activity in Bud Flowers, Flowers and Leaves of Cold Stored Lisianthus
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Date
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Coadvisor
Graduate program
Undergraduate course
Journal Title
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Volume Title
Publisher
Int Soc Horticultural Science
Type
Work presented at event
Access right
Acesso aberto
Abstract
This study evaluated the activity of the enzyme polyphenol oxidase (PPO) and the content of soluble protein present in lisianthus bud flowers, flowers and leaves in room temperature (24 +/- 2 degrees C) and pre-exposure cold chamber at 9 +/- 2 degrees C for 24 h, in order to examine a possible correlation between these parameters and postharvest longevity of lisianthus flowers. After treatments, flowers were kept in pots with water, stored at room temperature and evaluated every three days until the end of their decorative life for biochemical analyzes. During the experimental period the enzymatic activity increased with the aging of the material, directly related to the high concentration of phenolics that were accumulated in injured tissue, providing browning, while soluble protein content slightly decreased. Thus, PPO enzyme activity can be applied for plant senescence evaluation, acting as a biochemical marker for product visual quality.
Description
Keywords
Eustoma grandiflorum, postharvest, polyphenoloxidase, soluble proteins
Language
English
Citation
X International Symposium On Postharvest Quality Of Ornamental Plants. Leuven 1: Int Soc Horticultural Science, v. 1060, p. 103-108, 2015.
