Vacuum impregnation modulates the metabolic activity of spinach leaves
(2014) In Innovative Food Science & Emerging Technologies 26. p.286-293- Abstract
- In this study calorimetric measurements provided evidence of a drastic increase of spinach leaf gross metabolism as a consequence of vacuum impregnation (VI) at a minimum pressure of 150 mbar with trehalose and sucrose isotonic solutions. When applying VI extracellular air is replaced by the impregnation solution, potentially limiting tissue respiration to any remaining air volume in the tissue. However the observation that impregnated leaves showed photosynthetic activity suggests that not all air was exhausted during VI. Hence impregnation appears to reach a maximum with remaining gas filled compartments. Metabolic inhibitors impregnated together with sugars showed that the short-term metabolic response, causing the drastic increase of... (More)
- In this study calorimetric measurements provided evidence of a drastic increase of spinach leaf gross metabolism as a consequence of vacuum impregnation (VI) at a minimum pressure of 150 mbar with trehalose and sucrose isotonic solutions. When applying VI extracellular air is replaced by the impregnation solution, potentially limiting tissue respiration to any remaining air volume in the tissue. However the observation that impregnated leaves showed photosynthetic activity suggests that not all air was exhausted during VI. Hence impregnation appears to reach a maximum with remaining gas filled compartments. Metabolic inhibitors impregnated together with sugars showed that the short-term metabolic response, causing the drastic increase of gross metabolism upon VI, depends on mitochondrial oxygen consuming pathways. The metabolic effect following mannitol impregnation was comparable with water impregnation, suggesting that the strong metabolic effect reported here is only seen for molecules that can be metabolized and provide energy to the cells. Industrial relevance: Vacuum impregnation is used to incorporate additives in fruit and vegetable tissues, such as anti-browning agents, microbial preservatives or cryoprotectants. As a promising technology in the food industry, deeper insights on the metabolic consequences of vacuum impregnation are required to define and control the shelf-life of the processed fruits and vegetables. (C) 2014 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5070103
- author
- Panarese, Valentina ; Rocculi, Pietro ; Baldi, Elena ; Wadsö, Lars LU ; Rasmusson, Allan G. LU and Gomez, Federico LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Vacuum impregnation, Metabolism, Photosynthesis, Spinacia oleracea, Isothermal calorimetry
- in
- Innovative Food Science & Emerging Technologies
- volume
- 26
- pages
- 286 - 293
- publisher
- Elsevier
- external identifiers
-
- wos:000347582400037
- scopus:84915770845
- ISSN
- 1466-8564
- DOI
- 10.1016/j.ifset.2014.10.006
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Building Materials (011033004), Food Technology (011001017), Center for Chemistry and Chemical Engineering (011001000)
- id
- b76af3ac-ddc7-429d-90ea-0ae6ba60ddaf (old id 5070103)
- date added to LUP
- 2016-04-01 13:11:07
- date last changed
- 2023-11-27 02:05:15
@article{b76af3ac-ddc7-429d-90ea-0ae6ba60ddaf, abstract = {{In this study calorimetric measurements provided evidence of a drastic increase of spinach leaf gross metabolism as a consequence of vacuum impregnation (VI) at a minimum pressure of 150 mbar with trehalose and sucrose isotonic solutions. When applying VI extracellular air is replaced by the impregnation solution, potentially limiting tissue respiration to any remaining air volume in the tissue. However the observation that impregnated leaves showed photosynthetic activity suggests that not all air was exhausted during VI. Hence impregnation appears to reach a maximum with remaining gas filled compartments. Metabolic inhibitors impregnated together with sugars showed that the short-term metabolic response, causing the drastic increase of gross metabolism upon VI, depends on mitochondrial oxygen consuming pathways. The metabolic effect following mannitol impregnation was comparable with water impregnation, suggesting that the strong metabolic effect reported here is only seen for molecules that can be metabolized and provide energy to the cells. Industrial relevance: Vacuum impregnation is used to incorporate additives in fruit and vegetable tissues, such as anti-browning agents, microbial preservatives or cryoprotectants. As a promising technology in the food industry, deeper insights on the metabolic consequences of vacuum impregnation are required to define and control the shelf-life of the processed fruits and vegetables. (C) 2014 Elsevier Ltd. All rights reserved.}}, author = {{Panarese, Valentina and Rocculi, Pietro and Baldi, Elena and Wadsö, Lars and Rasmusson, Allan G. and Gomez, Federico}}, issn = {{1466-8564}}, keywords = {{Vacuum impregnation; Metabolism; Photosynthesis; Spinacia oleracea; Isothermal calorimetry}}, language = {{eng}}, pages = {{286--293}}, publisher = {{Elsevier}}, series = {{Innovative Food Science & Emerging Technologies}}, title = {{Vacuum impregnation modulates the metabolic activity of spinach leaves}}, url = {{http://dx.doi.org/10.1016/j.ifset.2014.10.006}}, doi = {{10.1016/j.ifset.2014.10.006}}, volume = {{26}}, year = {{2014}}, }