Table of Contents
ISRN Agronomy
Volume 2013, Article ID 871396, 7 pages
http://dx.doi.org/10.1155/2013/871396
Research Article

Effect of Carboxymethyl Cellulose and Alginate Coating Combined with Brewer Yeast on Postharvest Grape Preservation

1College of Chemistry and Materials, Shanxi Normal University, Linfen 041004, China
2College of Engineering, Shanxi Normal University, Linfen 041004, China

Received 26 March 2013; Accepted 14 May 2013

Academic Editors: O. Ferrarese-Filho and H. P. Singh

Copyright © 2013 Ren Yinzhe and Zhang Shaoying. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effect of carboxymethyl cellulose and alginate coating combined with brewer yeast on postharvest grape preservation was investigated. The postharvest grapes were coated with 2% of alginate and 3% of carboxymethyl cellulose combined with  CFU/mL of brewer yeast. The combined treatment samples showed good sensory character on day 13 compared with control samples or only coated samples. The increase of weight loss and decrease of total soluble solids of combined treatment grapes were restrained. Furthermore, the protective enzymes including superoxide dismutase, peroxidase, and catalase of combined treatment sample showed higher activities. Accordingly, the increase of malonaldehyde content was also restrained and more vitamin C was preserved in combined treatment samples. At day 13, the weight loss rate and the total soluble solids of grape treated with coating + yeast were 23.6% lower and 20.6% higher than those of control samples, respectively. Coating grapes with 2% of alginate and 3% of carboxymethyl cellulose combined with brewer yeast of  CFU/mL was a well-proven method to preserve postharvest grapes.