Submit Manuscript

International Journal of Agricultural Research

Year: 2011 | Volume: 6 | Issue: 5 | Page No.: 400-409
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Article Trend

Total views 321

Search

Authors

Benjawan Chutichudet

P. Chutichudet

Keywords

Research Article

Shading Application on Controlling the Activity of Polyphenol Oxidase and Leaf Browning of ‘Grand Rapids’ Lettuce

Benjawan Chutichudet and P. Chutichudet
The effects of preharvest different shading (0, 50, 60, 70 and 80%) on the contents of phenolic and quinone, leaf color, browning appearance and activity of Polyphenol Oxidase (PPO) were evaluated on lettuce cv. Grand Rapids under field conditions. A Completely Randomized Design was arranged with four replications and composed of five treatments: no shading (Control) compared with shading sunlight to 50, 60, 70 or 80% when the plants aged 15 Days After Planting (DAP). The results showed that plants grown under shading of 60% sunlight had the lowest contents of both phenolic and quinone substances. In addition, leaf color from plants treated with 60% shading showed the lowest a* value. Furthermore, at harvest, both the least browning damage and the minimal activity of PPO were achieved with the treatment of 60% reduction of sunlight.
PDF Fulltext XML References Citation

Leave a Comment

Your email address will not be published. Required fields are marked *