Soluble proteins and polyphenoloxidase activity in bud flowers, flowers and leaves of cold stored lisianthus

TY - JOUR

T1 - Soluble proteins and polyphenoloxidase activity in bud flowers, flowers and leaves of cold stored lisianthus

AU - Cavasini, R.

AU - Nunes, K. N M

AU - Trevenzoli Favero, Bruno

AU - Lima, G. P P

PY - 2015

Y1 - 2015

N2 - 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°C) and pre-exposure cold chamber at 9±2°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.

AB - 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°C) and pre-exposure cold chamber at 9±2°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.

KW - Eustoma grandiflorum

KW - Polyphenoloxidase

KW - Postharvest

KW - Soluble proteins

U2 - 10.17660/ActaHortic.2015.1060.13

DO - 10.17660/ActaHortic.2015.1060.13

M3 - Journal article

AN - SCOPUS:84922255929

SN - 0567-7572

VL - 1060

SP - 103

EP - 108

JO - Acta Horticulturae

JF - Acta Horticulturae

ER -