Adekunte, A. O. and Tiwari, Brijesh and Cullen, P. J. and Scannell, Amalia and O’Donnell, C. P. (2010) Effect of sonication on colour, ascorbic acid and yeast inactivation in tomato juice. ISSN 1873-7072Full text not available from this repository.
Power ultrasound is recognised as a potential non-thermal technique to inactivate micro-organisms pertinent to fruit juices. In this study tomato juice was sonicated at different amplitude levels (24.4–61.0 μm) at a constant frequency of 20 kHz for treatment times (2–10 min) and pulse durations of 5 s on and 5 s off. Hunter colour values (L*, a* and b*), pH, °Brix, titratable acidity, ascorbic acid and yeast inactivation were measured. No significant differences (p < 0.05) in pH, °Brix or titratable acidity were observed. Regression modelling was used to investigate the main effects of amplitude level and treatment time. Prediction models were found to be significant (p < 0.05) with low standard errors and high coefficients of determination (R2). Model predictions for critical quality parameters of Hunter colour values (L*, a* and b*), ascorbic acid and yeast inactivation were closely correlated with the experimental results obtained.
|Additional Information:||Citation: Food Chemistry, 2010, vol. 122, no. 3, pp. 500-507.|
|Divisions:||Faculties > Hollings Faculty > Food, Nutrition and Hospitality|
|Date Deposited:||11 Aug 2010 13:59|
|Last Modified:||20 Jul 2016 01:19|
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