Degradation of colour in beetroot (Beta vulgaris L.): a kinetics study
The kinetics of colour (measured as Hunter ‘a/b’ value) degradation in beetroot puree ( Beta vulgaris L. ) was studied over a temperature range of 50–120 °C (isothermal process), and also during normal open pan cooking, pressure-cooking and a newly developed and patented fuel-efficient ‘EcoCooker’ (...
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Published in | Journal of food science and technology Vol. 51; no. 10; pp. 2678 - 2684 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
India
Springer India
01.10.2014
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | The kinetics of colour (measured as Hunter ‘a/b’ value) degradation in beetroot puree (
Beta vulgaris L.
) was studied over a temperature range of 50–120 °C (isothermal process), and also during normal open pan cooking, pressure-cooking and a newly developed and patented fuel-efficient ‘EcoCooker’ (non-isothermal heating process). The degradation of visual colour as measured as Hunter ‘a/b’ value was found to follow a first order kinetics, where the rate constant increased with an increase in the temperature. The temperature dependence of degradation was adequately modeled by Arrhenius equation. A mathematical model has been developed using the kinetic parameters obtained from the isothermal experiments to predict the losses of color in the non-isothermal heating/processing method based on the time-temperature data for each of the methods. The results obtained indicate a colour degradation of similar magnitude in all the three modes of cooking used in the study. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0022-1155 0975-8402 |
DOI: | 10.1007/s13197-012-0741-9 |