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Kinetic Evaluation of Colour, Texture, Polyphenols and Antioxidant Capacity of Irish York Cabbage After Blanching Treatment
Articles
  • Amit Jaiswal, Dublin Institute of Technology
  • Shilpi Gupta
  • Nissreen Abu-Ghannam, Dublin Institute of Technology
Document Type
Article
Publication Date
2011-8-1
Rights
This item is available under a Creative Commons License for non-commercial use only
Disciplines
Publication Details

Food Chemistry (DOI 10.1016/j.foodchem.2011.08.032)

Abstract
In the present work, York cabbage was blanched between 80 to100°C with an increment of 5°C for up to 14 min and kinetics of the different physio-chemical properties were studied. Significant reductions in the texture, color, polyphenols (PPs) and antioxidant (AO) capacity were observed due to blanching. Total phenolic and flavonoid content retained ranged from 19.6-24.5 and 22.0-25.7%, respectively. Heavy losses in the AO capacity also occurred as a result of blanching, which was evident with a loss of 74.0-82.0% in activity as compared to raw York cabbage. Textural studies showed that blanching caused a significant reduction in firmness in the range of 24.0-73.2% and similar trend also observed for color. Kinetic evaluation of degradation was carried out for all the studied quality parameters. The fractional conversion (FC) first-order reaction model showed a good fit for the different studied parameters with the coefficient of determination ranging from 0.892-0.992 except for texture and color, which followed first order and zero order kinetics, respectively. The temperature effect followed the Arrhenius law with activation energy for polyphenolic content, AO capacity, color and texture calculated as 9.22-11.5, 9.05-35.05, 15.73 and 33.8 kJ/mol K, respectively.
DOI
10.1016/j.foodchem.2011.08.032
Citation Information
Jaiswal, A. K., Gupta, S. & Abu-Ghannam, N. (2011). Kinetic Evaluation of Color, Texture, Polyphenols and Antioxidant Capacity of Irish York Cabbage after Blanching Treatment. Food Chemistry DOI:10.1016/j.foodchem.2011.08.032