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Reduction of the nitrate content in baby spinach leaves by vacuum impregnation with sucrose

Yusof, Noor Liyana LU ; Rasmusson, Allan LU and Gomez, Federico LU (2016) In Food and Bioprocess Technology 9(8). p.1358-1366
Abstract
Vacuum impregnation (VI) has been widely utilized as a pre-treatment method prior to, e.g., the minimal processing, freezing, or drying of foods. In many cases, VI has been used to focus on the enrichment of fruits and vegetables with probiotics or micronutrients, texture enhancement, the modification of the sensory attributes, and extension of shelf life by pH reduction. However, little attention has been paid to the exploration of the metabolic consequences of VI that could lead to changes in the quality characteristics of plant tissues. Since nitrate has long been discussed as a compound that is harmful to human health, the aim of this investigation was to reduce the nitrate content in spinach leaves by feeding sucrose into the tissue... (More)
Vacuum impregnation (VI) has been widely utilized as a pre-treatment method prior to, e.g., the minimal processing, freezing, or drying of foods. In many cases, VI has been used to focus on the enrichment of fruits and vegetables with probiotics or micronutrients, texture enhancement, the modification of the sensory attributes, and extension of shelf life by pH reduction. However, little attention has been paid to the exploration of the metabolic consequences of VI that could lead to changes in the quality characteristics of plant tissues. Since nitrate has long been discussed as a compound that is harmful to human health, the aim of this investigation was to reduce the nitrate content in spinach leaves by feeding sucrose into the tissue using VI. The leaves, either non-treated or treated with VI, were stored under saturated humidity conditions and in darkness at 8 °C, for up to 72 h. VI-treated leaves showed a remarkable reduction in nitrate content as compared to the non-treated samples. Upon storage, sucrose was reduced, indicating that this sugar had been respired and had induced metabolization of the stored nitrate. The nitrite content of the treated leaves was unaffected, proving that this toxic compound was not accumulated in the baby spinach leaves upon external sucrose feeding. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Sucrose feeding, Nitrate, Metabolism
in
Food and Bioprocess Technology
volume
9
issue
8
pages
1358 - 1366
publisher
Springer
external identifiers
  • Scopus:84962773687
ISSN
1935-5149
DOI
10.1007/s11947-016-1725-y
language
English
LU publication?
yes
id
f427ace3-1ca3-4966-890e-947c8f94ae75
date added to LUP
2016-05-31 12:12:40
date last changed
2017-01-10 14:20:30
@article{f427ace3-1ca3-4966-890e-947c8f94ae75,
  abstract     = {Vacuum impregnation (VI) has been widely utilized as a pre-treatment method prior to, e.g., the minimal processing, freezing, or drying of foods. In many cases, VI has been used to focus on the enrichment of fruits and vegetables with probiotics or micronutrients, texture enhancement, the modification of the sensory attributes, and extension of shelf life by pH reduction. However, little attention has been paid to the exploration of the metabolic consequences of VI that could lead to changes in the quality characteristics of plant tissues. Since nitrate has long been discussed as a compound that is harmful to human health, the aim of this investigation was to reduce the nitrate content in spinach leaves by feeding sucrose into the tissue using VI. The leaves, either non-treated or treated with VI, were stored under saturated humidity conditions and in darkness at 8 °C, for up to 72 h. VI-treated leaves showed a remarkable reduction in nitrate content as compared to the non-treated samples. Upon storage, sucrose was reduced, indicating that this sugar had been respired and had induced metabolization of the stored nitrate. The nitrite content of the treated leaves was unaffected, proving that this toxic compound was not accumulated in the baby spinach leaves upon external sucrose feeding.},
  author       = {Yusof, Noor  Liyana and Rasmusson, Allan and Gomez, Federico},
  issn         = {1935-5149},
  keyword      = {Sucrose feeding, Nitrate, Metabolism},
  language     = {eng},
  number       = {8},
  pages        = {1358--1366},
  publisher    = {Springer},
  series       = {Food and Bioprocess Technology},
  title        = {Reduction of the nitrate content in baby spinach leaves by vacuum impregnation with sucrose},
  url          = {http://dx.doi.org/10.1007/s11947-016-1725-y},
  volume       = {9},
  year         = {2016},
}