Articles

EFFECT OF SOME DIP TREATMENTS ON THE NUTRITIONAL PROPERTIES OF FRESH-CUT TOMATO AND PEPPER DURING STORAGE

Article number
934_83
Pages
627 – 632
Language
English
Abstract
Dipping in solutions of different compounds has been suggested as a successful method for maintaining quality (especially color and texture) of fresh-cut products.
In the present study, tomato and pepper fruits were cut longitudinally in quarters, dipped in solutions of 2% citric acid, 2% ascorbic acid or 2% calcium lactate for 2 min, placed in trays covered with 15µ polyethylene film and stored at 4°C for 10 days.
Control fresh-cut fruits were untreated.
At 0, 5 and 10 days, glucose, fructose, sucrose, ascorbic acid, total phenolics and antioxidant capacity were determined.
The results for tomato showed that in fruits of the control after 5 days of storage glucose and ascorbic acid decreased by 92 and 71%, respectively, while at the end of storage antioxidant capacity increased by 109%. Fruits dipped in 2% ascorbic acid after 5 days of storage had higher glucose and phenolic content, while at the end of storage they had higher phenolic content and antioxidant capacity than both control and other treatments.
From the other treatments only dipping in 2% citric acid affected glucose in a similar way with dipping in ascorbic acid.
The results for pepper showed that in fruits of the control after 5 days of storage glucose and phenolic content decreased by 26 and 18%, respectively, while at the end of storage antioxidant activity decreased by 26%. Dipping in 2% calcium lactate prevented the reduction of glucose and antioxidant activity, while dipping in 2% ascorbic acid increased by 14% phenolics at the end of storage.

Publication
Authors
M.D. Antunes, M.G. Miguel, A.M. Cavaco, V. Pantazis, S. Timianis, A.S. Siomos
Keywords
fresh-cut, storage, quality parameters, antioxidant activity
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