Evolution of quality indices of fresh bunched spinach stored using low density polyethylene and polypropylene bags
by Alejandra Yommi, Carolina Duarte, Liliana Carrozzi, Natalia Guerra, Monica Viviana Barg, Andres Lopez Camelo, Maria Victoria Aguero, Sara I. Roura
International Journal of Postharvest Technology and Innovation (IJPTI), Vol. 2, No. 2, 2011

Abstract: Packaging technology constitutes an available method for reducing postharvest deteriorative processes on fresh products. The purpose of this work was to evaluate leaf water status, weight loss and colour retention of bunched spinach leaves packaged in low density polyethylene (LDPE) and polypropylene (OPP) bags, stored at 2°C for 25 days. Water status was determined through relative water content (RWC), the free:total water ratio (FW/TW) and bound water (BW); colour was evaluated colorimetrically as hue angle. Gaseous concentrations reached in OPP bags (11% O₂, 3%-5% CO₂) were within those considered beneficial for spinach. Weight loss was higher in LDPE than OPP bags. RWC was lower in LDPE than in OPP bags. RWC decreased after day 18. Increases occurred in BW and decreases occurred in the FW/TW, indicating possible water movement within the leaf. Hue angle diminished after seven days of storage, indicating loss of green colour. Better physical and physiological properties were observed in spinach packaged in OPP bags.

Online publication date: Wed, 18-Feb-2015

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Postharvest Technology and Innovation (IJPTI):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com