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Development and application of a new time–temperature integrator for the measurement of P-values in mild pasteurisation processes

Paper ID Volume ID Publish Year Pages File Format Full-Text
19274 43056 2009 11 PDF Available
Title
Development and application of a new time–temperature integrator for the measurement of P-values in mild pasteurisation processes
Abstract

A new time–temperature integrator (TTI) for the measurement of mild pasteurisation treatments is described. The objective was to measure thermal processes of the order of a few minutes at 70 °C. Food products that receive these treatments are intended for sale either under refrigerated conditions with <10 days storage, or are naturally high in acid that allows ambient storage for many months. The new TTI, referred to as BAA70, consisted of 0.5 mg/mL α-amylase from Bacillus amyloliquefaciens in 10 mM acetate buffer. Decimal reduction time (D70-value) of 8.4 min and z-value of 8.9 C° were calculated for BAA70 in a water bath. Maximum P-values measured with BAA70 were up to 25.2 min at 70 °C. Industrial evaluation for surface pasteurisation in hot-filled mini jam jars and for continuous oven cooking of quiches demonstrated the applicability of the BAA70 TTI. P-Values in both these operations could not be measured using conventional temperature sensors and so the TTIs provided invaluable data on pasteurisation achieved.

Keywords
Thermal processing; Pasteurisation; Time–temperature integrator; Hot filling; Ovens
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Development and application of a new time–temperature integrator for the measurement of P-values in mild pasteurisation processes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 87, Issue 1, March 2009, Pages 23–33
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