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Analysis of reduction of Geobacillus stearothermophilus spores treated with high hydrostatic pressure and mild heat in milk buffer

Paper ID Volume ID Publish Year Pages File Format Full-Text
25633 43586 2006 10 PDF Available
Title
Analysis of reduction of Geobacillus stearothermophilus spores treated with high hydrostatic pressure and mild heat in milk buffer
Abstract

Our unpublished experimental results of fractional factorial experiments showed that the significant external factors affecting high pressure processing (HPP) inactivation were pressure, temperature and pressure holding time. Based on these results, response surface methodology (RSM) was employed in the present work and a quadratic equation for HPP inactivation was built. By analyzing the response surface plots and their corresponding contour plots as well as solving the quadratic equation, the experimental values were shown to be significantly in good agreement with predicted values since the adjusted determination coefficient (RAdj2) was 0.9747. The optimum process parameters for six log-cycles reduction of Geobacillus stearothermophilus spores were obtained as: temperature, 86 °C; pressure, 625.0 MPa and pressure holding time, 14.0 min. The adequacy of the model equation for predicting the optimum response values was verified effectively by the validation data.

Keywords
High pressure processing (HPP); Reduction of Geobacillus stearothermophilus spores; Response surface methodology (RSM); Effect; Mild heat
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Analysis of reduction of Geobacillus stearothermophilus spores treated with high hydrostatic pressure and mild heat in milk buffer
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 125, Issue 3, 18 September 2006, Pages 351–360
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us