Research Article
Volume 2 Issue 1 - January 2016
DOI: 10.19080/NFSIJ.2017.02.555578
Nutri Food Sci Int J
Copyright © All rights are reserved by Eric Batista Ferreira
Acceptability and Cold Storage of Fresh-Cut Eggplant
(Solanum Melongena L.) using Edible Coatings and
Antioxidants
Camila Sanches Manca
1
, Queisielle Magalhães Carvalho
1
, Mayara Carolina Orsini
1
, Eric Batista Ferreira
2
,
Eduardo Valério de Barros Vilas Boas
3
and Flávia Della Lucia
1 *
1
Nutrition Faculty, Federal University of Alfenas, Brazil
2
Institute of Exact Sciences, Federal University of Alfenas, Brazil
3
Department of Food Science, Federal University of Lavras, Brazil
Submission: December 19, 2016; Published: January 17, 2017
*Corresponding author: Flávia Della Lucia, Nutrition Faculty, Federal University of Alfenas, Brazil, E mail: flavia@unifal-mg.edu.br
Introduction
Eggplant (Solanum melongena L.) or aubergine, in especially
is a climacteric fruit that belongs to the Solanaceae family and it
is originally from India and China. They are an important food
both from the economic and nutritional points of view, and are
cultivated and consumed worldwide. They are a rich source of
pro vitamin A, thiamine, riboflavin, niacin, ascorbic acid and
polyphenols. Due to these aspects, the eggplant exhibits a high
antioxidant potential and consequently help to prevent chronic
and degenerative illnesses as shown in clinical studies, and
their increased consumption in recent years [1,7]. Eggplant is
highly perishable due to the exposure of their internal cellular
tissues caused by peeling and cutting that promote the increase
of metabolism, respiratory rate, ethylene production, water loss,
softening and microbial contamination, so promoting chemical
reactions that cause modifications, consequently, they reduce its
lifetime [3,4]. These aspects have demanded studies in order to
extend the storage life and to assure the quality of this product
[5,6].
Due to these factors, the market for minimally processed
fruits and vegetables has significantly increased in recent years
and their appeal derives from their convenience and the decrease
of generated waste, therefore the use of alternative techniques
aimed at preventing the waste of these fruits is necessary [7].
Several preservation technologies have been applied and among
them there is the usage of edible coatings on vegetables, which
aims to a functional performance, to preserve the texture and
nutritional value, to reduce the respiratory rate and the ethylene
production and moreover to limit the loss or the excessive gain
of water and to preserve the freshness. These ingredients can be
polysaccharides, proteins and lipids [3,8].
Edible coatings in association with acids has been used in
some fresh-cut technology and shown to be effective. Citric acid
is an acidulant commonly used in the food industry and the
ascorbic acid, one of the main antioxidants used in vegetable
products, has an important role in the enzymatic browning
prevention due to its efficiency in containing the product
metabolic reactions [9]. Actually, edible coatings have gained
an enormous importance and they represent an alternative to
reduce the harmful effects provoked by the fresh-cut process.
The consumer, while assessing the product initially, verifies it by
its visual aspect. Thus, the enzymatic browning that occurs in
the fresh-cut fruits can jeopardize their acceptability. Browning
is the most common and important symptom of chilling injury
Nutrition & Food Science
International Journal
ISSN 2474-767X
Summary
Due to the global increasing demand for minimally processed market, the uses of alternative techniques aimed at reducing the browning and
maintain nutritional quality is necessary. Therefore, we studied a method that meets the demand of consumers and results in better conservation
of fresh-cut eggplants. The aim was to evaluate the acceptability and the cold storage of fresh-cut eggplants when edible gelatin and cassava
starch coatings in association with antioxidants were used. The application of these edible coatings and antioxidants was efficient and it delayed
withering and browning signals until 12day of cold storage maintaining its acceptability.
Keywords: Cassava starch; Gelatin; Antioxidants; Acceptability; Quality
Nutri Food Sci Int J 2(1): NFSIJ.MS.ID.555578 (2017) 001