Vacuum Impregnation of Spinach Tissue: Metabolic Consequences and their Potential Industrial Applications
Författare
Summary, in English
The influence of impregnation with different substances on the metabolic activity of spinach leaves in modified atmosphere packaging (MAP) was investigated. The gross metabolic activity of the impregnated spinach leaves changed significantly, depending on the impregnation solute and treatment temperature. Sucrose induced the highest metabolic heat production at 21 ºC, whereas calcium lactate led to the highest metabolic activity at 5 ºC. The high metabolic activity of sucrose-impregnated leaves was reflected by the high oxygen consumption and carbon dioxide production measured in the packaged product stored at 21 ºC. However, this was not reflected by the changes in atmosphere inside the calcium lactate-impregnated, packaged products. The incongruity between calorimetric and atmospheric measurements may be the result of the different time scales of the measurements. The results obtained in this work have helped provide a better understanding of how impregnation of spinach leaves affects their metabolic activity. The findings could be of importance in the food industry as they provide a better understanding of how spinach leaves could be metabolically affected by a certain type of compound, thus influencing specific quality characteristics and their respiration upon packaging.
Avdelning/ar
Publiceringsår
2017-06-14
Språk
Engelska
Fulltext
Dokumenttyp
Doktorsavhandling
Förlag
Department of Food Technology, Lund University
Ämne
- Engineering and Technology
Nyckelord
- Vacuum impregnation
- Metabolic consequences
- Spinach : metabolism
- Modified atmosphere
- Minimal processing
- Nitrate reduction
- Vegetables
- Plant tissue
Status
Published
Handledare
ISBN/ISSN/Övrigt
- ISBN: 978-91-7422-530-3
- ISBN: 978-91-7422-529-7
Försvarsdatum
1 september 2017
Försvarstid
10:15
Försvarsplats
lecture hall K:B, Kemicentrum, Naturvetarvägen 14, Lund University, Faculty of Engineering LTH, Lund
Opponent
- Antonio Derossi (Doktor)