Shelf life of minimally processed pineapples treated with ascorbic and citric acids
The purpose of this research was to determine the shelf life of minimally processed (MP) 'Pérola' pineapples treated with ascorbic acid (AA) and citric acid (CA) based on physical, chemical, sensorial and microbiological attributes. Slices were dipped into drinking water (control) or combined solutions of AA:CA (%) (1.0:0.5 and 1.0:1.0) with sodium hypochlorite (NaClO 20 mg L-1) for 30 seconds. The samples were conditioned in polyethylene terephtalate packages and stored at 4±1 °C per 13 days. The low peroxidase activity in the slices treated with antioxidant combinations was related to low pH values observed in these samples. The treatments 1.0:0.5 and 1.0:1.0 (AA:CA, %) favored maintenance of the initial a* values and avoided the pulp browning. The ascorbic acid increased more than double on the 2nd day in the treated slices. By the 4th day the CO2 values suggested a higher respiratory activity in the slices treated with anti-browning compounds. The antioxidant treatments did not produce detectable residual flavors in the MP pineapple. Regardless of microbiological safety during the 13 days of cold storage, the control slices can be kept by 6 days, afterwards the color and dehydration become strong enough to affect the appearance. On the other hand, MP 'Pérola' pineapples treated with 1.0:0.5 (AA:CA, %) and NaClO (20 mg L-1) can be stored for 8 days at 4±1 ºC, which represents the extension of the shelf life in 2 days. After this period the overripe odor starts to develop.
Main Authors: | , , , , |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Instituto Agronômico de Campinas
2012
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000300019 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
oai:scielo:S0006-87052012000300019 |
---|---|
record_format |
ojs |
spelling |
oai:scielo:S0006-870520120003000192012-11-27Shelf life of minimally processed pineapples treated with ascorbic and citric acidsAntoniolli,Lucimara RogériaBenedetti,Benedito CarlosSouza Filho,Men de Sá Moreira deGarruti,Deborah dos SantosBorges,Maria de Fátima Ananas comosus minimal processing enzymatic browning residual flavor microbiological safety The purpose of this research was to determine the shelf life of minimally processed (MP) 'Pérola' pineapples treated with ascorbic acid (AA) and citric acid (CA) based on physical, chemical, sensorial and microbiological attributes. Slices were dipped into drinking water (control) or combined solutions of AA:CA (%) (1.0:0.5 and 1.0:1.0) with sodium hypochlorite (NaClO 20 mg L-1) for 30 seconds. The samples were conditioned in polyethylene terephtalate packages and stored at 4±1 °C per 13 days. The low peroxidase activity in the slices treated with antioxidant combinations was related to low pH values observed in these samples. The treatments 1.0:0.5 and 1.0:1.0 (AA:CA, %) favored maintenance of the initial a* values and avoided the pulp browning. The ascorbic acid increased more than double on the 2nd day in the treated slices. By the 4th day the CO2 values suggested a higher respiratory activity in the slices treated with anti-browning compounds. The antioxidant treatments did not produce detectable residual flavors in the MP pineapple. Regardless of microbiological safety during the 13 days of cold storage, the control slices can be kept by 6 days, afterwards the color and dehydration become strong enough to affect the appearance. On the other hand, MP 'Pérola' pineapples treated with 1.0:0.5 (AA:CA, %) and NaClO (20 mg L-1) can be stored for 8 days at 4±1 ºC, which represents the extension of the shelf life in 2 days. After this period the overripe odor starts to develop.info:eu-repo/semantics/openAccessInstituto Agronômico de CampinasBragantia v.71 n.3 20122012-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000300019en10.1590/S0006-87052012000300019 |
institution |
SCIELO |
collection |
OJS |
country |
Brasil |
countrycode |
BR |
component |
Revista |
access |
En linea |
databasecode |
rev-scielo-br |
tag |
revista |
region |
America del Sur |
libraryname |
SciELO |
language |
English |
format |
Digital |
author |
Antoniolli,Lucimara Rogéria Benedetti,Benedito Carlos Souza Filho,Men de Sá Moreira de Garruti,Deborah dos Santos Borges,Maria de Fátima |
spellingShingle |
Antoniolli,Lucimara Rogéria Benedetti,Benedito Carlos Souza Filho,Men de Sá Moreira de Garruti,Deborah dos Santos Borges,Maria de Fátima Shelf life of minimally processed pineapples treated with ascorbic and citric acids |
author_facet |
Antoniolli,Lucimara Rogéria Benedetti,Benedito Carlos Souza Filho,Men de Sá Moreira de Garruti,Deborah dos Santos Borges,Maria de Fátima |
author_sort |
Antoniolli,Lucimara Rogéria |
title |
Shelf life of minimally processed pineapples treated with ascorbic and citric acids |
title_short |
Shelf life of minimally processed pineapples treated with ascorbic and citric acids |
title_full |
Shelf life of minimally processed pineapples treated with ascorbic and citric acids |
title_fullStr |
Shelf life of minimally processed pineapples treated with ascorbic and citric acids |
title_full_unstemmed |
Shelf life of minimally processed pineapples treated with ascorbic and citric acids |
title_sort |
shelf life of minimally processed pineapples treated with ascorbic and citric acids |
description |
The purpose of this research was to determine the shelf life of minimally processed (MP) 'Pérola' pineapples treated with ascorbic acid (AA) and citric acid (CA) based on physical, chemical, sensorial and microbiological attributes. Slices were dipped into drinking water (control) or combined solutions of AA:CA (%) (1.0:0.5 and 1.0:1.0) with sodium hypochlorite (NaClO 20 mg L-1) for 30 seconds. The samples were conditioned in polyethylene terephtalate packages and stored at 4±1 °C per 13 days. The low peroxidase activity in the slices treated with antioxidant combinations was related to low pH values observed in these samples. The treatments 1.0:0.5 and 1.0:1.0 (AA:CA, %) favored maintenance of the initial a* values and avoided the pulp browning. The ascorbic acid increased more than double on the 2nd day in the treated slices. By the 4th day the CO2 values suggested a higher respiratory activity in the slices treated with anti-browning compounds. The antioxidant treatments did not produce detectable residual flavors in the MP pineapple. Regardless of microbiological safety during the 13 days of cold storage, the control slices can be kept by 6 days, afterwards the color and dehydration become strong enough to affect the appearance. On the other hand, MP 'Pérola' pineapples treated with 1.0:0.5 (AA:CA, %) and NaClO (20 mg L-1) can be stored for 8 days at 4±1 ºC, which represents the extension of the shelf life in 2 days. After this period the overripe odor starts to develop. |
publisher |
Instituto Agronômico de Campinas |
publishDate |
2012 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000300019 |
work_keys_str_mv |
AT antoniollilucimararogeria shelflifeofminimallyprocessedpineapplestreatedwithascorbicandcitricacids AT benedettibeneditocarlos shelflifeofminimallyprocessedpineapplestreatedwithascorbicandcitricacids AT souzafilhomendesamoreirade shelflifeofminimallyprocessedpineapplestreatedwithascorbicandcitricacids AT garrutideborahdossantos shelflifeofminimallyprocessedpineapplestreatedwithascorbicandcitricacids AT borgesmariadefatima shelflifeofminimallyprocessedpineapplestreatedwithascorbicandcitricacids |
_version_ |
1756375369649225728 |