Changes in the carrot (Daucus carota L. cv. Nerac) cell wall during storage
Author
Summary, in English
The aim of this study was to examine biochemical changes in cell wall carbohydrates and extensin proteins during long-term storage of carrots (Daucus carota L. cv. Nerac). During the storage period of 6 months, cell wall fractions were isolated from the carrot at various times for carbohydrate and protein analysis. Signs of extensin cross-linking and its concomitant insolubilisation in the cell wall were found after 7 and 12 weeks of storage. During the same period the concentration of galactose and arabinose decreased, while other carbohydrate components as well as the degree of methylesterification remained virtually unchanged. After the 12th week of storage no changes in the extensin or carbohydrates were detected. Oxidative cross-linking between extensin molecules in the cell wall has been implicated in cell wall strengthening and may be part of the mechanism behind the storage-induced firmness of carrots. (C) 2003 Elsevier Ltd. All rights reserved.
Department/s
- Department of Food Technology, Engineering and Nutrition
- Biochemistry and Structural Biology
Publishing year
2004
Language
English
Pages
225-232
Publication/Series
Food Research International
Volume
37
Issue
3
Document type
Journal article
Publisher
Elsevier
Topic
- Biological Sciences
- Food Engineering
Keywords
- Storage
- Cell walls
- Carrot
- Extensin
- Carbohydrates
- Oxidative cross-linking
Status
Published
ISBN/ISSN/Other
- ISSN: 0963-9969